[Bug c/77888] New: Missing -Wparentheses diagnostic
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77888
Bug ID: 77888
Summary: Missing -Wparentheses diagnostic
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
int main(void)
{
int zone = 5;
int MinChassisFanZoneNum = 4;
int MaxChassisFanZoneNum = 10;
# if 0
for (int i = (zone?zone:MinChassisFanZoneNum); i <=
(zone?zone:MaxChassisFanZoneNum); i++)
return i;
#else
for (int i = zone?zone:MinChassisFanZoneNum; i <=
zone?zone:MaxChassisFanZoneNum; i++)
return i;
#endif
}
The missing parentheses result in an infinite loop when compiled at O2.
[Bug sanitizer/71498] New: ubsan bounds checking influenced by surrounding code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71498
Bug ID: 71498
Summary: ubsan bounds checking influenced by surrounding code
Product: gcc
Version: 5.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
Target Milestone: ---
$ gcc -c /tmp/test.c -o - -S -fsanitize=bounds |grep ubsan_handle
call__ubsan_handle_out_of_bounds
$ gcc -c /tmp/test.c -o - -S -fsanitize=bounds |grep ubsan_handle
$
int a[100];
extern void call(const char * fn);
int testje (int core)
{
#if 1
// OK
call("har har");
#else
// NOK
call(__FUNCTION__);
#endif
return a[core];
}
[Bug middle-end/70871] questionable optimisation in fold-const.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70871 --- Comment #4 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Ping
[Bug middle-end/70871] questionable optimisation in fold-const.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70871 Jan Smets <jan.sm...@alcatel-lucent.com> changed: What|Removed |Added Attachment #38376|0 |1 is obsolete|| --- Comment #3 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Created attachment 38377 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38377=edit possible solution
[Bug middle-end/70871] questionable optimisation in fold-const.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70871 --- Comment #2 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Created attachment 38376 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38376=edit possible solution I have not extensively tested this, but it seems to work for my testcase.
[Bug middle-end/70871] New: questionable optimisation in fold-const.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70871
Bug ID: 70871
Summary: questionable optimisation in fold-const.c
Product: gcc
Version: 5.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
typedef struct X
{
void *a;
long int b;
int c;
int d;
unsigned int e[3];
unsigned short f;
unsigned char g;
unsigned char h;
unsigned char i;
unsigned char j;
unsigned char k;
unsigned char l;
unsigned char m;
unsigned char n;
};
int somefunc(void)
{
struct X *pX = (0L);
extern void call(void*);
call();
if(!pX->n && !pX->l)
return 0;
return 1;
}
for -O1 and higher
if(!pX->n && !pX->l)
results in (tree-original)
if ((BIT_FIELD_REF <*pX, 64, 320> & 280379743272960) == 0)
which eventually results in
ASAN_CHECK (6, _1, 8, 8)
when using -fsantize=address
Wheras ASAN really should be reporting a 2x 1 byte load and not 1x 8.
Thanks
[Bug c++/70714] New: ICE: Segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70714
Bug ID: 70714
Summary: ICE: Segmentation fault
Product: gcc
Version: 5.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
struct UINT;
typedef struct { UINT TYPES } eType;
fn1(eType) {
gcc version 5.3.1 20160411 (GCC)
= gcc-5-branch @ 0efe1cc72d37ff1173b52cf6bc3f17bd0ccb59f3
target = x86_64-unknown-linux-gnu
compile with : -xc++ -c testcase.best -o /dev/null -m32 -w
[Bug c++/70617] internal compiler error: Segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70617 --- Comment #7 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Should I open a different issue for that?
[Bug c++/70336] [5 regression] Incorrect Wconversion warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70336 Jan Smets <jan.sm...@alcatel-lucent.com> changed: What|Removed |Added Severity|normal |minor
[Bug debug/56805] DW_TAG_typedef missing when -fdebug-types-section is used (and -fno-eliminate-unused-debug-types)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56805 Jan Smets <jan.sm...@alcatel-lucent.com> changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution|--- |WONTFIX --- Comment #8 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Hopeless
[Bug target/66920] ICE in expand_debug_locations, at cfgexpand.c:3826
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66920 --- Comment #4 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Seems fixed.
[Bug target/66931] ICE in convert_move, at expr.c:316
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66931 Jan Smets <jan.sm...@alcatel-lucent.com> changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #3 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Seems fixed
[Bug rtl-optimization/63629] ICE in fix_loop_structure, at loop-init.c:251
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63629 Jan Smets <jan.sm...@alcatel-lucent.com> changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED --- Comment #1 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Seems fixed.
[Bug c++/70617] internal compiler error: Segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70617
--- Comment #5 from Jan Smets <jan.sm...@alcatel-lucent.com> ---
Reduced test case by creduce
struct UINT;
typedef struct { UINT TYPES } eType;
fn1(eType) {
gcc version 5.3.1 20160411 (GCC)
= gcc-5-branch @ 0efe1cc72d37ff1173b52cf6bc3f17bd0ccb59f3
target = x86_64-unknown-linux-gnu
compile with : -xc++ -c testcase.best -o /dev/null -m32 -w
[Bug c++/70617] internal compiler error: Segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70617 --- Comment #3 from Jan Smets <jan.sm...@alcatel-lucent.com> --- output is the same
[Bug c++/70617] internal compiler error: Segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70617 --- Comment #1 from Jan Smets <jan.sm...@alcatel-lucent.com> --- with checking=all ../pchip_code/vfp_combined_c.cpp:85:1: internal compiler error: Segmentation fault 0xd42735 crash_signal .././gcc-5.3.1/gcc/toplev.c:383 0x732f37 c_tree_chain_next .././gcc-5.3.1/gcc/c-family/c-common.h:1269 0x732f37 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:237 0x734651 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:567 0x734598 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:543 0x734619 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:563 0x7345de gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:548 0x733aa8 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:382 0x734673 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:569 0x734619 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:563 0x734192 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:437 0x75ede5 gt_ggc_mx_cp_binding_level(void*) ./gt-cp-name-lookup.h:64 0x733395 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:758 0x7341ae gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:439 0x734651 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:567 0x733aa8 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:382 0x734673 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:569 0xa34e55 ggc_mark_root_tab .././gcc-5.3.1/gcc/ggc-common.c:81 0xa34e55 ggc_mark_roots() .././gcc-5.3.1/gcc/ggc-common.c:98 0x8269ff ggc_collect() .././gcc-5.3.1/gcc/ggc-page.c:2199 Please submit a full bug report,
[Bug c++/70617] New: internal compiler error: Segmentation fault
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70617 Bug ID: 70617 Summary: internal compiler error: Segmentation fault Product: gcc Version: 5.3.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: jan.sm...@alcatel-lucent.com Target Milestone: --- gcc (GCC) 5.3.1 20160404 Unfortunately I have been unable to get a reduced testcase to upload. Creduce keeps running in loops and minor modifications to the source make it go away. The code is proprietary and therefor I can not share it. C++ , -O0 file.cpp:1335:1: internal compiler error: Segmentation fault 0xa3dd85 crash_signal .././gcc-5.3.1/gcc/toplev.c:383 0x6cd7e3 lookup_page_table_entry .././gcc-5.3.1/gcc/ggc-page.c:659 0x6cd7e3 ggc_set_mark(void const*) .././gcc-5.3.1/gcc/ggc-page.c:1540 0x638e97 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:236 0x63a33c gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:594 0x63a246 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:567 0x63a18d gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:543 0x63a20e gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:563 0x63a1d3 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:548 0x63a33c gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:594 0x63a373 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:602 0x63a373 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:602 0x63a373 gt_ggc_mx_lang_tree_node(void*) ./gt-cp-tree.h:602 0x89db2e gt_ggc_mx_gimple_statement_base(void*) /toolchains/gcc53/gcc-builddir/gcc/gtype-desc.c:2397 0x89b90d gt_ggc_mx_basic_block_def(void*) /toolchains/gcc53/gcc-builddir/gcc/gtype-desc.c:2055 0x89d7fd gt_ggc_mx_gimple_statement_base(void*) /toolchains/gcc53/gcc-builddir/gcc/gtype-desc.c:2428 0x89f2c1 gt_ggc_mx_cgraph_edge(void*) /toolchains/gcc53/gcc-builddir/gcc/gtype-desc.c:907 0x89f2b3 gt_ggc_mx_cgraph_edge(void*) /toolchains/gcc53/gcc-builddir/gcc/gtype-desc.c:906 0x89f2b3 gt_ggc_mx_cgraph_edge(void*) /toolchains/gcc53/gcc-builddir/gcc/gtype-desc.c:906 0x89eded gt_ggc_mx_symtab_node(void*) /toolchains/gcc53/gcc-builddir/gcc/gtype-desc.c:1712 Please submit a full bug report,
[Bug c++/70336] New: Incorrect Wconversion warning
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70336
Bug ID: 70336
Summary: Incorrect Wconversion warning
Product: gcc
Version: 5.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
void bla(unsigned char * buffer, int offset, int position)
{
buffer[position/8] |= (unsigned char)(0x80 >> offset);
}
/tmp/test.c: In function 'bla':
/tmp/test.c:3:27: warning: conversion to 'unsigned char' from 'int' may alter
its value [-Wconversion]
buffer[position/8] |= (unsigned char)(0x80 >> offset);
Does not give a warning with GCC 4.8, but does with 5.3.1
[Bug middle-end/69975] New: Missing uninitilized warning / optimized to use wrong value
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69975
Bug ID: 69975
Summary: Missing uninitilized warning / optimized to use wrong
value
Product: gcc
Version: 5.3.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
#include
int X;
int foo(int yyy, int zzz)
{
int xxx;
if (yyy)
{
printf("in y\n");
xxx = 5;
}
if (zzz)
{
printf("in x\n");
X = xxx;
}
return X;
}
int main(void)
{
printf("got %d\n", foo(0,1));
return 0;
}
$ gcc test-uninit.c -o /tmp/bla -O1 -Wall -Wuninitialized && /tmp/bla
in x
got 5
$ gcc test-uninit.c -o /tmp/bla -O0 -Wall -Wuninitialized && /tmp/bla
in x
got 0
I would have expected random garbage from the stack, but never ever '5'.
(which makes it seem as if the (yyy) condition was true.)
And this should really give a compile time warning.
If this is considered undefined behaviour, then it is not cought by
-fsanitize=undefined in GCC 5.3
[Bug bootstrap/69352] [6 Regression] profiledbootstrap failure with --with-build-config=bootstrap-lto
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69352
--- Comment #4 from Jan Smets <jan.sm...@alcatel-lucent.com> ---
compile with : -xc -c pr69352.best -w -o /dev/null -O1
$ cat pr69352.best
typedef enum {
REG_HSTRH,
REG_HSTRL,
REG_HFAERH,
REG_HFAERL,
REG_HIMRH,
REG_HIMRL,
REG_HCMRH,
REG_HCMRL,
REG_HADDRH,
REG_HADDRL,
REG_HGPRH,
REG_HGPRL,
REG_HWRBFSRH,
REG_HRBCF,
REG_MAX
} DLLA;
a[][REG_MAX];
b, c, d, e, f, g, h, i;
fn1(p1) {
unsigned j;
int k = 0, l;
DLLA m;
if (h)
m = REG_HWRBFSRH;
else
m = REG_HRBCF;
if (a[p1][m])
l = fn1;
a[p1][i] = l;
while (c) {
if (b) {
if (f)
k = 1;
fn2();
}
for (; d;)
j++;
}
while (c) {
if (a[p1][REG_HWRBFSRH]) {
if (g)
k = 1;
j++;
}
c = e;
}
return k;
}
[Bug c/68513] [5/6 Regression] ICE in gimplify_expr, at gimplify.c:8832, c_maybe_const_expr in IL
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68513 --- Comment #13 from Jan Smets <jan.sm...@alcatel-lucent.com> --- I don't think is fixed in 5.x-branch
[Bug bootstrap/69352] [6 Regression] profiledbootstrap failure with --with-build-config=bootstrap-lto
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69352 Jan Smets <jan.sm...@alcatel-lucent.com> changed: What|Removed |Added CC||jan.sm...@alcatel-lucent.co ||m --- Comment #1 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Same for mips compiling source files. If you need a testcase please let me know.
[Bug target/63679] [5/6 Regression][AArch64] Failure to constant fold.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63679 Jan Smets <jan.sm...@alcatel-lucent.com> changed: What|Removed |Added CC||jan.sm...@alcatel-lucent.co ||m --- Comment #41 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Breaks a bunch of other things. See PR 69352
[Bug c++/69277] New: ICE (Segmentation fault) used but never defined
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69277
Bug ID: 69277
Summary: ICE (Segmentation fault) used but never defined
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
$GCC -fpreprocessed -S -xc++ -c testcase.best -o /dev/null -mabi=64 (mips64
cross compiler was used)
testcase.best:14:52: warning: '{anonymous}::unique_ptr
{anonymous}::make_unique(Args&&) [with T = {anonymous}::DataContainerBinary;
Args = char (&)[]]' used but never defined
template unique_ptr make_unique(Args &&);
^~~
testcase.best: In instantiation of '{anonymous}::unique_ptr
{anonymous}::make_unique(Args&&) [with T = {anonymous}::DataContainerBinary;
Args = char (&)[]]':
testcase.best:14:52: internal compiler error: Segmentation fault
testcase.best :
namespace {
template class unique_ptr {};
class DataContainerBinary;
namespace {
struct BinaryValue;
union FieldValue {
BinaryValue *binary;
};
struct BinaryValue {
int length;
char data[];
};
}
template unique_ptr make_unique(Args &&);
namespace {
unique_ptr to_binary(FieldValue field) {
make_unique(field.binary->data);
}
}
}
And if you change do this it warning output changes slightly (probably same
issue)
16c14
< template unique_ptr make_unique(Args &&) {}
---
> template unique_ptr make_unique(Args &&);
[Bug c/68513] [5/6 Regression] ICE in gimplify_expr, at gimplify.c:8832, c_maybe_const_expr in IL
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68513 --- Comment #11 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Thanks. Can this also be backported to 5.x? Thanks
[Bug rtl-optimization/68636] unnecessary unaligned load on mips o32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68636
--- Comment #2 from Jan Smets <jan.sm...@alcatel-lucent.com> ---
The vreg pass is different
OLD
ode_label 16 9 17 6 2 "" [1 uses])
(note 17 16 18 6 [bb 6] NOTE_INSN_BASIC_BLOCK)
(insn 18 17 0 6 (set (mem/v:SI (reg/f:SI 194 [ iftmp$0 ]) [2 *iftmp$0_1+0 S4
A32])
(const_int 0 [0])) test.c:5 281 {*movsi_internal}
(nil))
NEW
(note 17 16 18 6 [bb 6] NOTE_INSN_BASIC_BLOCK)
(insn 18 17 19 6 (set (mem/v:BLK (reg/f:SI 194 [ D.1495 ]) [1 *_1+0 S4 A8])
(unspec:BLK [
(const_int 0 [0])
(mem/v:QI (reg/f:SI 194 [ D.1495 ]) [1 *_1+0 S1 A8])
] UNSPEC_STORE_LEFT)) test2.c:5 276 {mov_swl}
(nil))
(insn 19 18 0 6 (set (mem/v:BLK (reg/f:SI 194 [ D.1495 ]) [1 *_1+0 S4 A8])
(unspec:BLK [
(const_int 0 [0])
(mem/v:QI (plus:SI (reg/f:SI 194 [ D.1495 ])
(const_int 3 [0x3])) [1 *_1+3 S1 A8])
(mem/v:BLK (reg/f:SI 194 [ D.1495 ]) [1 *_1+0 S4 A8])
] UNSPEC_STORE_RIGHT)) test2.c:5 278 {mov_swr}
(nil))
I'm not sure how to proceed from here.
Thanks
[Bug c/68513] [5/6 Regression] ICE in gimplify_expr, at gimplify.c:8832, c_maybe_const_expr in IL
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68513 --- Comment #9 from Jan Smets <jan.sm...@alcatel-lucent.com> --- Could you please tell me in which commit the issue was fixed. Thanks.
[Bug rtl-optimization/68636] New: unnecessary unaligned load on mips o32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68636
Bug ID: 68636
Summary: unnecessary unaligned load on mips o32
Product: gcc
Version: 5.2.1
Status: UNCONFIRMED
Severity: trivial
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
typedef unsigned long uintptr_t;;
volatile unsigned int x;
void testTestTest(void)
{
x = *((volatile unsigned int *) (((volatile void
*)((uintptr_t)(0x00800070) | ((0xA000) + (uintptr_t)(0x00800070)) >=
0x0080) && ( { register int zeroIsCavium; asm volatile ( " .setpush
\n" " .setnoreorder \n" " mfc0%0,$15 \n" "
srl %0,%0,16\n" " andi%0,%0,0xff \n" " xori
%0,%0,0x0d \n" " .setpop \n" : "=r" (zeroIsCavium));
(zeroIsCavium == 0); } )) ? 0x2000 : 0));
}
GCC 4.8 (-march=mips2 -O2 (mabi=o32)) generates
:
0: 40027800mfc0v0,$15
4: 00021402srl v0,v0,0x10
8: 304200ffandiv0,v0,0xff
c: 3842000dxoriv0,v0,0xd
10: 1046beqzv0,2c <testTestTest+0x2c>
14: 3c02a080lui v0,0xa080
18: 24420070addiu v0,v0,112
1c: 8c43lw v1,0(v0)
20: 3c02lui v0,0x0
24: 03e8jr ra
28: ac43sw v1,0(v0)
2c: 3c02c080lui v0,0xc080
30: 24420070addiu v0,v0,112
34: 8c43lw v1,0(v0)
38: 3c02lui v0,0x0
3c: 03e8jr ra
40: ac43sw v1,0(v0)
GCC 5.2.1 more or less replaces the LW with LWL+LWR
:
0: 40027800mfc0v0,$15
4: 00021402srl v0,v0,0x10
8: 304200ffandiv0,v0,0xff
c: 3842000dxoriv0,v0,0xd
10: 1048beqzv0,34 <testTestTest+0x34>
14: 3c02a080lui v0,0xa080
18: 24420070addiu v0,v0,112
1c: 8843lwl v1,0(v0)
20: 98430003lwr v1,3(v0)
24: 00601021movev0,v1
28: 3c03lui v1,0x0
2c: 03e8jr ra
30: ac62sw v0,0(v1)
34: 3c02c080lui v0,0xc080
38: 24420070addiu v0,v0,112
3c: 8843lwl v1,0(v0)
40: 98430003lwr v1,3(v0)
44: 00601021movev0,v1
48: 3c03lui v1,0x0
4c: 03e8jr ra
50: ac62sw v0,0(v1)
When taking just the true branch of the inline assembly, thus further reducing
to something like
x = *((volatile unsigned int *) (((volatile void *)((uintptr_t)(0x00800070) |
((0xA000) + 0x2000) ;
then results in exactly the same code in both 4.8 and 5.2.1
:
0: 3c02c080lui v0,0xc080
4: 8c430070lw v1,112(v0)
8: 3c02lui v0,0x0
c: ac43sw v1,0(v0)
10: 03e8jr ra
14: nop
Is there a specific reason it starts using unaligned accesses when the inline
assembly is included? The variable factor is either 0x2000 or 0x0, which
both result in aligned addresses.
Thanks
[Bug rtl-optimization/68547] New: incorrect optimization
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68547 Bug ID: 68547 Summary: incorrect optimization Product: gcc Version: 5.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: rtl-optimization Assignee: unassigned at gcc dot gnu.org Reporter: jan.sm...@alcatel-lucent.com Target Milestone: --- Created attachment 36841 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36841=edit test case $ g++ test.cc -o test -O2 -Wall && ./test DEL element[1]=200 volatile DEL element[1]=200 last_element_index=2 (should be 2) volatile DEL element[1]=200 DEL element[1]=200 last_element_index=1 (should be 2) $ g++ test.cc -o test -O0 -Wall && ./test DEL element[1]=200 volatile DEL element[1]=200 last_element_index=2 (should be 2) volatile DEL element[1]=200 DEL element[1]=200 last_element_index=2 (should be 2)
[Bug c/68513] New: ICE in gimplify_expr, at gimplify.c:8832
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68513 Bug ID: 68513 Summary: ICE in gimplify_expr, at gimplify.c:8832 Product: gcc Version: 5.2.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c Assignee: unassigned at gcc dot gnu.org Reporter: jan.sm...@alcatel-lucent.com Target Milestone: --- Created attachment 36819 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36819=edit testcase Test case attached. Simply compile without any optimizations.
[Bug middle-end/66920] ICE in expand_debug_locations, at cfgexpand.c:3826
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66920 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com --- Likely related/identical to 66931
[Bug middle-end/66931] New: ICE in convert_move, at expr.c:316
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66931
Bug ID: 66931
Summary: ICE in convert_move, at expr.c:316
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
Compile with -xc++ -w -m32 -gdwarf-4 -mno-sse test.cpp
Likely related/identical to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66920
typedef long v2di __attribute__((vector_size(16)));
struct tcounter;
int table;
void __attribute__((__always_inline__))
counter(tcounter *self, long, long) {
*(v2di *)self + v2di{};
}
typedef struct { short total_len; } t_ing;
bool __attribute__((target(sse4.2))) test_sp() {
t_ing var;
counter((tcounter *)table, 1,
var.total_len);
}
[Bug middle-end/66920] New: ICE in expand_debug_locations, at cfgexpand.c:3826
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66920
Bug ID: 66920
Summary: ICE in expand_debug_locations, at cfgexpand.c:3826
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Target Milestone: ---
Compile with -xc++ -w -m32 -gdwarf-4 -mno-sse -O1 test.cpp
test.cpp: In function 'bool test_sp(Desc*, data*)':
test.cpp:29:1: internal compiler error: in expand_debug_locations, at
cfgexpand.c:3826
test_sp(Desc *pDesc, data *info) {
typedef long int64_t;
typedef int UINT32;
typedef short len;
struct header;
typedef UINT32 number;
struct Desc {
short length;
};
typedef int64_t v2di __attribute__((vector_size(16)));
int table;
struct data;
void __attribute__((__always_inline__))
counter_inc(struct counter *, long, long) {
v2di v2di{};
}
bool ing_build_qhdr_and_output(Desc *pDesc,
data *, header *,
number, number, bool,
len, len,
len) {
counter_inc((counter *)table, 1,
pDesc-length);
}
bool __attribute__((target(sse4.2)))
test_sp(Desc *pDesc, data *info) {
number dest, queue_stat_addr, plen_length;
UINT32 offset;
UINT32 extra_header_size;
header *sw_hdr;
return ing_build_qhdr_and_output(pDesc, info, sw_hdr, dest,
queue_stat_addr, 2, offset,
extra_header_size, plen_length);
}
[Bug c++/63629] New: ICE in fix_loop_structure, at loop-init.c:251
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63629 Bug ID: 63629 Summary: ICE in fix_loop_structure, at loop-init.c:251 Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: jan.sm...@alcatel-lucent.com Created attachment 33795 -- https://gcc.gnu.org/bugzilla/attachment.cgi?id=33795action=edit ice in fix_loop_structure, at loop-init.c:251 /tmp/gcc50-new/x86_64-wrs-vxworks/x86_64-unknown-linux-gnu/bin/gcc -B/tmp/gcc50-new/x86_64-wrs-vxworks/x86_64-unknown-linux-gnu/bin -xc++ -c bug.i -o /dev/null -m32 -w bug.i: In member function 'virtual void UnitTest::TestfltrLogTest_fltrLogIndicateTruncatedData_Normal::RunImpl() const': bug.i:231:4: internal compiler error: in fix_loop_structure, at loop-init.c:251 } reduced testcase generated by delta is attached.
[Bug middle-end/63221] New: symbol with section attribute ends up in common
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63221 Bug ID: 63221 Summary: symbol with section attribute ends up in common Product: gcc Version: 5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: jan.sm...@alcatel-lucent.com extern int sharedTop; int sharedTop __attribute__ ((section (.cvmx_shared))); sharedTop ends up in COM with trunk, GCC 4.8 puts it in .cvmx_shared as one would expect.
[Bug tree-optimization/59132] Missing aggressive array based optimisation warning
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59132 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com --- Ping
[Bug middle-end/58970] [4.7 Regression] internal compiler error: in get_bit_range, at expr.c:4562
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58970 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #31 from Jan Smets jan.sm...@alcatel-lucent.com --- Fixed in 4.8 and newer.
[Bug sanitizer/60861] New: out of bounds access of global var in .rodata/.bss not detected
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60861
Bug ID: 60861
Summary: out of bounds access of global var in .rodata/.bss
not detected
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
gcc version 4.8.2 (Debian 4.8.2-16)
gcc test.c -O2 -fsanitize=address -o test
int depth = 3;
//int testGlobalOutOfBoundsRODATAVar[2] = {1}; /* data: works
(asan_report_load4 present) */
const int testGlobalOutOfBoundsRODATAVar[1] = {1}; /* rodata: doesn't work (no
asan_report_load4 present) */
//int testGlobalOutOfBoundsRODATAVar[1] = {0}; /* bss : works
(asan_report_load4 present) */
//int testGlobalOutOfBoundsRODATAVar[1]; /* bss : doesn't work !???
(asan_report_load4 present!) */
int test(void)
{
return testGlobalOutOfBoundsRODATAVar[depth]; // boom
}
int main(void)
{
return test();
}
[Bug sanitizer/60861] out of bounds access of global var in .rodata/.bss not detected
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60861 --- Comment #2 from Jan Smets jan.sm...@alcatel-lucent.com --- Using -fno-common (while compiling as C), or compiling as C++ works for the unitialized bss example: int testGlobalOutOfBoundsRODATAVar[5]; /* bss : works with -fno-common (compiled as C) or when compiled as C++ */ but not for the .rodata example.
[Bug rtl-optimization/60260] New: MIPS sign extension issue
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60260
Bug ID: 60260
Summary: MIPS sign extension issue
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
GCC 4.8.2
mips-wrs-vxworks
-c test.c -o test -Wall -O2 -mabi=32
int main()
{
volatile unsigned int * ptr;
unsigned int end = 0x7fbfff80U;
unsigned int * eptr = (unsigned int*)0x8000U;
#define CACHE_LINE_SIZE 32
for (ptr = (volatile unsigned int *) end; ptr eptr; ptr +=
CACHE_LINE_SIZE / sizeof(*ptr))
{
//printf(ptr=%p\n, ptr);
*ptr = *ptr;
}
return 0;
}
main:
0: 3c027fbflui v0,0x7fbf
4: 3442ff80ori v0,v0,0xff80
8: 3c048000lui a0,0x8000
c: 8c43lw v1,0(v0) .. then when v0 reaches
7FE0 ...
10: 24420020addiu v0,v0,32 result is 8000. and
signed extended ?
14: ac43ffe0sw v1,-32(v0) === crash here on addr
0x.7FE0
18: 1444fffcbne v0,a0,c main+0xc
1c: nop
20: 03e8jr ra
24: 1021movev0,zero
When -fno-schedule-insns -fno-schedule-insns2 is used then the add is done
after the load/stores. (Which is what GCC 4.6 does)
(Or daddiu may solve this too I think)
[Bug rtl-optimization/60260] MIPS sign extension issue
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60260 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com --- According to C99 6.5.6 this behavior is correct. Closing.
[Bug middle-end/59338] New: error: position plus size exceeds size of referenced object in BIT_FIELD_REF
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59338
Bug ID: 59338
Summary: error: position plus size exceeds size of referenced
object in BIT_FIELD_REF
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
minimal.i: In function 'test':
minimal.i:20:6: error: position plus size exceeds size of referenced object in
BIT_FIELD_REF
void test(void)
^
BIT_FIELD_REF *qResp, 8, 32
minimal.i:23:28: note: in statement
if (qResp-u.l[0].More == 0)
^
D.1802 = BIT_FIELD_REF *qResp, 8, 32;
minimal.i:20:6: internal compiler error: verify_gimple failed
void test(void)
^
typedef enum
{
XYZZY,
} enumType;
typedef struct
{
unsigned char More : 1;
} tResp;
typedef struct
{
enumType QueryType;
union
{
tResp l[0];
} u;
} tQResp;
void test(void)
{
tQResp *qResp = (0);
if (qResp-u.l[0].More == 0)
return;
}
[Bug other/59132] New: Missing aggressive-loop-optimisation warning
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59132
Bug ID: 59132
Summary: Missing aggressive-loop-optimisation warning
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: other
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
#include stdio.h
char info = 0;
typedef enum { A = 0 } eA;
typedef enum { B = 0 } eB;
typedef enum { C = 0 } eC;
int main (void)
{
eA a = 0;
eB b;
eC c[2];
for (a = 1; a = 2; a++)
{
switch (info)
{
case 1 :
c[a] = 3;
break;
default:
c[a] = 4;
break;
}
for (b = 0; b 1; b++)
{
printf(b=%d a=%d c[a] = %d\n, b, a, c[a]);
}
}
return 0;
}
[Bug middle-end/58970] [4.7/4.8/4.9 Regression] internal compiler error: in get_bit_range, at expr.c:4562
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58970 --- Comment #30 from Jan Smets jan.sm...@alcatel-lucent.com --- Thanks!
[Bug middle-end/58970] [4.7/4.8/4.9 Regression] internal compiler error: in get_bit_range, at expr.c:4562
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58970 --- Comment #28 from Jan Smets jan.sm...@alcatel-lucent.com --- Can this be backported to 4.8 please. Thanks
[Bug middle-end/58970] [4.7/4.8/4.9 Regression] internal compiler error: in get_bit_range, at expr.c:4562
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58970 --- Comment #5 from Jan Smets jan.sm...@alcatel-lucent.com --- Seems to work. Thanks!
[Bug middle-end/58970] New: internal compiler error: in get_bit_range, at expr.c:4562
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58970
Bug ID: 58970
Summary: internal compiler error: in get_bit_range, at
expr.c:4562
Product: gcc
Version: 4.8.2
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
/tmp/minimal9.i: In function 'function':
/tmp/minimal9.i:15:28: internal compiler error: in get_bit_range, at
expr.c:4562
pInfo-mode[x].member1 = 0;
^
Please submit a full bug report,
with preprocessed source if appropriate.
See http://gcc.gnu.org/bugs.html for instructions.
struct info
{
struct {
unsigned char member1 : 1;
unsigned char member2;
} mode[1];
};
extern void call(void);
void function(int x, struct info *pInfo)
{
if (x != -1)
call();
pInfo-mode[x].member1 = 0;
if (pInfo-mode[x].member2 == (((x) == 1) ? 2 : 1))
{
call();
}
}
[Bug middle-end/58970] internal compiler error: in get_bit_range, at expr.c:4562
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58970 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com --- And compile with -O1 or -O2. Reproducible on x86 and mips.
[Bug ipa/58332] [4.9 Regression] error: inlined_to pointer is set but no predecessors found
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58332 --- Comment #4 from Jan Smets jan.sm...@alcatel-lucent.com --- Verified
[Bug other/58439] New: ICE verify_cgraph_node failed
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58439 Bug ID: 58439 Summary: ICE verify_cgraph_node failed Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: other Assignee: unassigned at gcc dot gnu.org Reporter: jan.sm...@alcatel-lucent.com Created attachment 30827 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=30827action=edit verify_cgraph_node failed file.c:3290:1: error: inlined_to pointer is set but no predecessors found } ^ GetCoreNum/204 (GetCoreNum) @0x7f61060995f0 Type: function definition analyzed Visibility: artificial next sharing asm name: 202 References: Referring: Function GetCoreNum/204 is inline copy in taskLock/60 Availability: local Function flags: body local Called by: Calls: file.c:3290:1: internal compiler error: verify_cgraph_node failed Please submit a full bug report, with preprocessed source if appropriate. See http://gcc.gnu.org/bugs.html for instructions. gcc version 4.9.0 20130908 (experimental) mips-wrs-vxworks testcase attached
[Bug other/58439] ICE verify_cgraph_node failed
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58439 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com --- Oh, and compile with -O2
[Bug sanitizer/58411] no_sanitize_undefined function attribute
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58411
--- Comment #3 from Jan Smets jan.sm...@alcatel-lucent.com ---
Eg, these attributes are useful too I think:
no_sanitize = disable ALL sanitize checks
sanitize - enable ALL sanitize checks
no_sanitize_{address,undefined,vla...} = disable the specific check
sanitize_{address,undefined,vla...} = enable the specific check
Perhaps the enablers will not be used as much, but it might be useful for
people who want to instrument just one specific function.
The no_sanitize attribute could be used for sensitive code, eg, task scheduler
code, interrupt handlers where someone might choose to never instrument.
Thanks
- Jan
[Bug sanitizer/58411] New: no_sanitize_undefined function attribute
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58411 Bug ID: 58411 Summary: no_sanitize_undefined function attribute Product: gcc Version: 4.9.0 Status: UNCONFIRMED Severity: enhancement Priority: P3 Component: sanitizer Assignee: unassigned at gcc dot gnu.org Reporter: jan.sm...@alcatel-lucent.com CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org, jakub at gcc dot gnu.org, kcc at gcc dot gnu.org Request for a no_sanitize_undefined attribute
[Bug sanitizer/58413] New: ubsan constant folding
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58413
Bug ID: 58413
Summary: ubsan constant folding
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
variable-sized object may not be initialized
unsigned short x[128 5] = {};
initializer element is not constant
static int x = ((int)( 0x | ((31 ((1 (4)) - 1)) (((15) + 6) +
4)) | ((0) ((15) + 6)) | ((0) (15)) ) );
(yes, auch)
unexpected size of type 'long long unsigned int:40'
uint64_t start_of_buffer = ((res.ptr.s.addr 7) - res.ptr.s.back) 7;
.addr and .back are bitfield members of struct s. ptr is a pointer to an
union.
case label does not reduce to an integer constant
switch(int)
...
case (11):
..
They all seem related.
Thanks!
[Bug sanitizer/58420] New: internal compiler error: in ubsan_type_descriptor, at ubsan.c:280
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58420
Bug ID: 58420
Summary: internal compiler error: in ubsan_type_descriptor, at
ubsan.c:280
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: sanitizer
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
jakub at gcc dot gnu.org, kcc at gcc dot gnu.org
stl.46/bits/locale_facets.h:1585:46: internal compiler error: in
ubsan_type_descriptor, at ubsan.c:280
Line 1585 is '_CharT _M_atoms_out[__num_base::_S_oend];'
templatetypename _CharT
struct __numpunct_cache : public locale::facet
{
const char* _M_grouping;
size_t_M_grouping_size;
bool _M_use_grouping;
const _CharT* _M_truename;
size_t_M_truename_size;
const _CharT* _M_falsename;
size_t_M_falsename_size;
_CharT_M_decimal_point;
_CharT_M_thousands_sep;
// A list of valid numeric literals for output: in the standard
// C locale, this is -+xX0123456789abcdef0123456789ABCDEF.
// This array contains the chars after having been passed
// through the current locale's ctype_CharT.widen().
_CharT_M_atoms_out[__num_base::_S_oend];
// A list of valid numeric literals for input: in the standard
// C locale, this is -+xX0123456789abcdefABCDEF
// This array contains the chars after having been passed
// through the current locale's ctype_CharT.widen().
_CharT_M_atoms_in[__num_base::_S_iend];
bool _M_allocated;
__numpunct_cache(size_t __refs = 0)
: facet(__refs), _M_grouping(0), _M_grouping_size(0),
_M_use_grouping(false),
_M_truename(0), _M_truename_size(0), _M_falsename(0),
_M_falsename_size(0), _M_decimal_point(_CharT()),
_M_thousands_sep(_CharT()), _M_allocated(false)
{ }
~__numpunct_cache();
void
_M_cache(const locale __loc);
private:
__numpunct_cache
operator=(const __numpunct_cache);
explicit
__numpunct_cache(const __numpunct_cache);
};
[Bug sanitizer/58420] internal compiler error: in ubsan_type_descriptor, at ubsan.c:280
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58420 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com --- This may be because of the (not yet committed) patch for ubsan vla bounds checking. http://www.mail-archive.com/gcc-patches@gcc.gnu.org/msg61427.html Probably another one for Marek Polacek. - Jan
[Bug sanitizer/58411] no_sanitize_undefined function attribute
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58411 --- Comment #2 from Jan Smets jan.sm...@alcatel-lucent.com --- Please also think of the other -fsanitize= options.
[Bug lto/58285] ICE in lto_output_tree, at lto-streamer-out.c:1318
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58285 --- Comment #3 from Jan Smets jan.sm...@alcatel-lucent.com --- vxworks target : . vs $ in asm names.
[Bug debug/56805] DW_TAG_typedef missing when -fdebug-types-section is used (and -fno-eliminate-unused-debug-types)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56805 --- Comment #7 from Jan Smets jan.sm...@alcatel-lucent.com --- Ping
[Bug lto/58285] New: ICE in lto_output_tree, at lto-streamer-out.c:1318
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58285
Bug ID: 58285
Summary: ICE in lto_output_tree, at lto-streamer-out.c:1318
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: jan.sm...@alcatel-lucent.com
Compile with -flto , must use mips triplet.
extern C {
extern C {
typedef int BOOL;
typedef int STATUS;
typedef struct slnode
{
} SL_LIST;
extern C {
typedef struct
{
} MEM_HANDLE;
}
}
typedef struct hashtbl
{
} H_NODE_INT;
typedef struct
{
} MODULE;
typedef MODULE *MODULE_ID;
extern C {
}
typedef struct symtab
{
} SYMTAB;
typedef SYMTAB *SYMTAB_ID;
extern C {
extern C {
extern C {
extern C {
typedef struct BOOT_PARAMS
{
int (*ioctl)
(
);
};
}
}
}
}
typedef struct wdb_info
{
} SPL;
}
BOOL findXtors
(
)
{
}
extern C STATUS cplusLoadFixup
(
MODULE_ID module,
SYMTAB_ID symTab
)
{
{
}
}
[Bug preprocessor/38990] preprocessing different in g++ -E and regular compiling.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38990 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added CC||jan.sm...@alcatel-lucent.co ||m --- Comment #3 from Jan Smets jan.sm...@alcatel-lucent.com --- Confirmed. This issue is easily hit when using distcc.
[Bug preprocessor/38990] preprocessing different in g++ -E and regular compiling.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38990 --- Comment #4 from Jan Smets jan.sm...@alcatel-lucent.com --- Known to work: GCC 4.6
[Bug other/55793] Compile hog with -gdwarf-4 and -O2 (-fvar-tracking issue)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55793 --- Comment #3 from Jan Smets jan.sm...@alcatel-lucent.com 2013-04-19 11:57:36 UTC --- Can't confirm since the patch can not be applied to 4.6. (Even though the branch is dead already..)
[Bug debug/56805] DW_TAG_typedef missing when -fdebug-types-section is used (and -fno-eliminate-unused-debug-types)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56805 --- Comment #6 from Jan Smets jan.sm...@alcatel-lucent.com 2013-04-12 09:38:52 UTC --- What if we created a new .debug_types section for the typedef if: 1) -fno-eliminate-unused-debug-types is used 2) a typedef is unused and otherwise eliminated. By doing this we won't create excessive information for people who are using debug-types-sections and who want a compact set of debugging info. Would that be possible? Thanks
[Bug debug/56805] DW_TAG_typedef missing when -fdebug-types-section is used (and -fno-eliminate-unused-debug-types)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56805 --- Comment #3 from Jan Smets jan.sm...@alcatel-lucent.com 2013-04-02 18:11:41 UTC --- For me it's very important. To briefly describe what we do: we have structures that are sent to different platforms with configuration information for fail over/redundancy/etc. First we use ccparse to parse our code and find all the relevant types/structures/etc. We end up in the file where the type is defined, not necessarily where it's used. Then we compile our entire project and parse the objdump STABS output of these structures/files we found with ccparse. Then that information is used to build a bunch of static asserts based on that information. (eg, size of members, offsets, etc). This tool helps our software designers. I've just written a few thousand lines of perl code to parse DWARF output and to regenerate the compile time checks. GCC 4.6 seems to only support type-sections anyway. Upgrading to 4.7 or 4.8 is not an option due to strict release planning and limited test resources. Anything you can do to make this work is appreciated. Thank you.
[Bug debug/56805] DW_TAG_typedef missing when -fdebug-types-section is used (and -fno-eliminate-unused-debug-types)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56805 --- Comment #5 from Jan Smets jan.sm...@alcatel-lucent.com 2013-04-02 21:28:37 UTC --- -gstrict-dwarf does not disable type sections in GCC 4.6, the result is unchanged. With 4.8 the behaviour is what you described. Is it really that much trouble to add a DW_TAG_typedef to the .debug_type entry, regardless of -fno-eliminate-unused-types ? Without it the debug entry is incomplete, imho. I would really appreciate it. Thanks.
[Bug debug/56805] New: DW_AT_typedef missing when -fdebug-types-section is used (and -fno-eliminate-unused-debug-types)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56805
Bug #: 56805
Summary: DW_AT_typedef missing when -fdebug-types-section is
used (and -fno-eliminate-unused-debug-types)
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: debug
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: jan.sm...@alcatel-lucent.com
typedef struct
{
char b[4];
} some_typedef_name;
typedef some_typedef_name joske;
int main()
{
return 0;
}
Compiled with :
-gdwarf-4 -fno-var-tracking-assignments -fno-eliminate-unused-debug-types
-fdebug-types-section
Contents of the .debug_types section:
Compilation Unit @ offset 0x0:
Length:0x4f (32-bit)
Version: 4
Abbrev Offset: 0
Pointer Size: 4
Signature: 86cb53f6d82bc2c9
Type Offset: 0x1d
017: Abbrev Number: 1 (DW_TAG_type_unit)
18 DW_AT_language: 4(C++)
19 DW_AT_stmt_list : 0x0
11d: Abbrev Number: 2 (DW_TAG_structure_type)
1e DW_AT_byte_size : 4
1f DW_AT_decl_file : 1
20 DW_AT_decl_line : 2
21 DW_AT_linkage_name: (indirect string, offset: 0x0):
17some_typedef_name
25 DW_AT_sibling : 0x34
229: Abbrev Number: 3 (DW_TAG_member)
2a DW_AT_name: b
2c DW_AT_decl_file : 1
2d DW_AT_decl_line : 3
2e DW_AT_type: 0x34
32 DW_AT_data_member_location: 0
134: Abbrev Number: 4 (DW_TAG_array_type)
35 DW_AT_type: 0x44
39 DW_AT_sibling : 0x44
23d: Abbrev Number: 5 (DW_TAG_subrange_type)
3e DW_AT_type: 0x4b
42 DW_AT_upper_bound : 3
144: Abbrev Number: 6 (DW_TAG_base_type)
45 DW_AT_byte_size : 1
46 DW_AT_encoding: 6(signed char)
47 DW_AT_name: (indirect string, offset: 0x14): char
14b: Abbrev Number: 6 (DW_TAG_base_type)
4c DW_AT_byte_size : 4
4d DW_AT_encoding: 7(unsigned)
4e DW_AT_name: (indirect string, offset: 0x19): sizetype
Contents of the .debug_info section:
Compilation Unit @ offset 0x0:
Length:0x48 (32-bit)
Version: 4
Abbrev Offset: 0
Pointer Size: 4
0b: Abbrev Number: 7 (DW_TAG_compile_unit)
c DW_AT_producer: (indirect string, offset: 0x27): GNU C++ 4.8.0
10 DW_AT_language: 4(C++)
11 DW_AT_name: (indirect string, offset: 0x103): /tmp/dwarf.c
15 DW_AT_low_pc : 0x0
19 DW_AT_high_pc : 0x24
1d DW_AT_stmt_list : 0x0
121: Abbrev Number: 6 (DW_TAG_base_type)
22 DW_AT_byte_size : 4
23 DW_AT_encoding: 7(unsigned)
24 DW_AT_name: (indirect string, offset: 0x19): sizetype
128: Abbrev Number: 6 (DW_TAG_base_type)
29 DW_AT_byte_size : 1
2a DW_AT_encoding: 6(signed char)
2b DW_AT_name: (indirect string, offset: 0x14): char
12f: Abbrev Number: 8 (DW_TAG_subprogram)
30 DW_AT_external: 1
30 DW_AT_name: (indirect string, offset: 0x22): main
34 DW_AT_decl_file : 1
35 DW_AT_decl_line : 7
36 DW_AT_type: 0x44
3a DW_AT_low_pc : 0x0
3e DW_AT_high_pc : 0x24
42 DW_AT_frame_base : 1 byte block: 9c (DW_OP_call_frame_cfa)
44 DW_AT_GNU_all_call_sites: 1
144: Abbrev Number: 9 (DW_TAG_base_type)
45 DW_AT_byte_size : 4
46 DW_AT_encoding: 5(signed)
47 DW_AT_name: int
without -fdebug-types-section (note the DW_AT_typedef for 'some_typedef_name'
and 'joske')
Contents of the .debug_info section:
Compilation Unit @ offset 0x0:
Length:0x85 (32-bit)
Version: 4
Abbrev Offset: 0
Pointer Size: 4
0b: Abbrev Number: 1 (DW_TAG_compile_unit)
c DW_AT_producer: (indirect string, offset: 0x2c): GNU C++ 4.8.0
10 DW_AT_language: 4(C++)
11 DW_AT_name: (indirect string, offset: 0x105): /tmp/dwarf.c
15 DW_AT_low_pc : 0x0
19 DW_AT_high_pc : 0x24
1d DW_AT_stmt_list : 0x0
121: Abbrev Number: 2 (DW_TAG_structure_type)
22 DW_AT_byte_size : 4
23 DW_AT_decl_file : 1
24 DW_AT_decl_line : 2
25 DW_AT_linkage_name: (indirect string, offset: 0x18):
17some_typedef_name
29 DW_AT_sibling : 0x38
22d: Abbrev Number: 3 (DW_TAG_member)
2e DW_AT_name: b
30 DW_AT_decl_file : 1
31 DW_AT_decl_line : 3
32 DW_AT_type: 0x38
36 DW_AT_data_member_location: 0
138: Abbrev Number: 4 (DW_TAG_array_type)
39 DW_AT_type: 0x4f
3d DW_AT_sibling : 0x48
241: Abbrev Number: 5 (DW_TAG_subrange_type)
42 DW_AT_type: 0x48
46 DW_AT_upper_bound : 3
148
[Bug debug/56805] DW_AT_typedef missing when -fdebug-types-section is used (and -fno-eliminate-unused-debug-types)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56805 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com 2013-04-01 23:33:18 UTC --- And the typedef names should have an entry , regardless of -fdebug-types-section because -fno-eliminate-unused-debug-types is used.
[Bug other/56664] New: internal compiler error: in estimate_function_body_sizes, at ipa-inline.c:1940
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56664
Bug #: 56664
Summary: internal compiler error: in
estimate_function_body_sizes, at ipa-inline.c:1940
Classification: Unclassified
Product: gcc
Version: 4.6.3
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: other
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: jan.sm...@alcatel-lucent.com
perl -e print 'void test(void) { __asm__ volatile ('; print '\.byte
,,,,,,,,,,,,,,,;\n\'x150;
print ');}'; /tmp/test.c
[Bug c/55882] unaligned load/store : incorrect struct offset
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55882 --- Comment #9 from Jan Smets jan.sm...@alcatel-lucent.com 2013-01-08 21:45:23 UTC --- Patch verified.
[Bug rtl-optimization/54524] [4.6/4.7 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added Status|NEW |RESOLVED Resolution||FIXED --- Comment #10 from Jan Smets jan.sm...@alcatel-lucent.com 2013-01-07 13:30:40 UTC --- Verified
[Bug c/55882] unaligned load/store : incorrect struct offset
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55882 --- Comment #3 from Jan Smets jan.sm...@alcatel-lucent.com 2013-01-07 16:20:32 UTC --- testfunction: testfunction: ... 20: 03c21021 adduv0,s8,v0 20: 03c21021 adduv0,s8,v0 24: 8c44000c lw a0,12(v0) | 24: 8c44000a lw a0,10(v0) 28: 3c03000f lui v1,0xf| 28: 3c03 lui v1,0x 2c: 3463 ori v1,v1,0x | 2c: 3463000f ori v1,v1,0xf 30: 00831824 and v1,a0,v1 30: 00831824 and v1,a0,v1 34: ac43000c sw v1,12(v0) | 34: ac43000a sw v1,10(v0) 38: 03c0e82d movesp,s8 38: 03c0e82d movesp,s8 3c: 8fbe03ec lw s8,1004(sp) 3c: 8fbe03ec lw s8,1004(sp) 40: 27bd03f0 addiu sp,sp,100840: 27bd03f0 addiu sp,sp,1008 44: 03e8 jr ra44: 03e8 jr ra 48: nop 48: nop
[Bug c/55882] unaligned load/store : incorrect struct offset
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55882 --- Comment #4 from Jan Smets jan.sm...@alcatel-lucent.com 2013-01-07 16:22:17 UTC --- Created attachment 29099 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=29099 testcase-pr55882.c
[Bug c/55882] New: unaligned load/store : incorrect struct offset
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55882
Bug #: 55882
Summary: unaligned load/store : incorrect struct offset
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: jan.sm...@alcatel-lucent.com
void testfunction(somestruct * chip)
{
unsigned i;
for (i = 0; i 4; i++)
{
{
tUint64 mask = ((chip-pp_mask) (0x0020)) ? (0x08) :
(((chip-pp_mask) (0x0200)) ? (0x0C) : 0xDEADBEEF-1) - (0) +
1)==64)?0ull:((1ull)((chip-pp_mask) (0x0020)) ? (0x08) :
(((chip-pp_mask) (0x0200)) ? (0x0C) : 0xDEADBEEF-1) - (0) + 1)
(63)) ? (((chip-pp_mask) (0x0020)) ? (0x08) : (((chip-pp_mask)
(0x0200)) ? (0x0C) : 0xDEADBEEF-1) - (0) + 1) : (63) - 1) ((1) ?
(0) : ((chip-pp_mask) (0x0020)) ? (0x08) : (((chip-pp_mask)
(0x0200)) ? (0x0C) : 0xDEADBEEF - 1 - ((chip-pp_mask)
(0x0020)) ? (0x08) : (((chip-pp_mask) (0x0200)) ? (0x0C) :
0xDEADBEEF-1)));
chip-config-smth[i].xyz = chip-config-smth[i].xyz ~mask;
};
}
The structure 'somestruct' is hard to reduce and for various reasons I can not
disclose it.
GCC 4.6 :
=
testfunction:
0: 27bdffe8addiu sp,sp,-24
4: afbe0014sw s8,20(sp)
8: 03a0f02dmoves8,sp
c: afc40018sw a0,24(s8)
10: afc0sw zero,0(s8)
14: 0859j 164 testfunction+0x164
18: nop
1c: 8fc20018lw v0,24(s8)
20: 8c431ab8lw v1,6840(v0)
24: 3c020020lui v0,0x20
28: 00621024and v0,v1,v0
2c: 1446bnezv0,48 testfunction+0x48
30: nop
34: 8fc20018lw v0,24(s8)
38: 8c421ab8lw v0,6840(v0)
3c: 30420200andiv0,v0,0x200
40: 10400018beqzv0,a4 testfunction+0xa4
44: nop
48: 8fc20018lw v0,24(s8)
4c: 8c431ab8lw v1,6840(v0)
50: 3c020020lui v0,0x20
54: 00621024and v0,v1,v0
58: 144ebnezv0,94 testfunction+0x94
5c: nop
60: 8fc20018lw v0,24(s8)
64: 8c421ab8lw v0,6840(v0)
68: 30420200andiv0,v0,0x200
6c: 1045beqzv0,84 testfunction+0x84
70: nop
74: 24030fffli v1,4095
78: 102dmovev0,zero
7c: 0823j 8c testfunction+0x8c
80: nop
84: 2403li v1,-1
88: 2402li v0,-1
8c: 0827j 9c testfunction+0x9c
90: nop
94: 240300ffli v1,255
98: 102dmovev0,zero
9c: 082cj b0 testfunction+0xb0
a0: nop
a4: 2403li v1,-1
a8: 3c027ffflui v0,0x7fff
ac: 3442ori v0,v0,0x
b0: afc3000csw v1,12(s8)
b4: afc20008sw v0,8(s8)
b8: 8fc20018lw v0,24(s8)
bc: 8c461ac0lw a2,6848(v0)
c0: 8fc20018lw v0,24(s8)
c4: 8c451ac0lw a1,6848(v0)
c8: 8fc4lw a0,0(s8)
cc: 0080182dmovev1,a0
d0: 00031080sll v0,v1,0x2
d4: 0040182dmovev1,v0
d8: 00031080sll v0,v1,0x2
dc: 00431023subuv0,v0,v1
e0: 00441023subuv0,v0,a0
e4: 000211c0sll v0,v0,0x7
e8: 00a21021adduv0,a1,v0
ec: 8c4212d0lw v0,4816(v0)
f0: 00021502srl v0,v0,0x14
f4: 3042andiv0,v0,0x
f8: 0040182dmovev1,v0
fc: 97c2000elhu v0,14(s8)
100: 00021027nor v0,zero,v0
104: 3042andiv0,v0,0x
108: 00621024and v0,v1,v0
10c: 3042andiv0,v0,0x
110: 30420fffandiv0,v0,0xfff
114: 3045andia1,v0,0x
118: 8fc4lw a0,0(s8)
11c: 0080182dmovev1,a0
120: 00031080sll v0,v1,0x2
124: 0040182dmovev1,v0
128: 00031080sll v0,v1,0x2
12c: 00431023subuv0,v0,v1
130: 00441023subuv0,v0,a0
134: 000211c0sll v0,v0,0x7
138: 00c21021adduv0,a2,v0
13c: 00051d00sll v1,a1,0x14
140: 8c4512d0lw a1,4816(v0) !
144: 3c04000flui a0,0xf
148: 3484ori a0,a0,0x
14c: 00a42024and a0,a1,a0
150: 00831825or v1,a0,v1
154: ac4312d0sw v1,4816(v0) !
158: 8fc2lw v0,0(s8)
15c: 24420001addiu v0,v0,1
160: afc2sw v0,0(s8)
164: 8fc2lw v0,0(s8)
168: 2c420004sltiu v0,v0,4
16c: 1440ffabbnezv0,1c testfunction+0x1c
170: nop
174: 03c0e82dmovesp,s8
178: 8fbe0014lw s8,20(sp)
17c: 27bd0018addiu sp,sp,24
180: 03e8jr ra
184: nop
[Bug c/55882] unaligned load/store : incorrect struct offset
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55882 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added Target||mips* --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com 2013-01-05 01:43:46 UTC --- Mips isa lvl 2, o32 Optimizations off
[Bug middle-end/55851] New: ICE in size_binop_loc, at fold-const.c:1385
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55851 Bug #: 55851 Summary: ICE in size_binop_loc, at fold-const.c:1385 Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassig...@gcc.gnu.org ReportedBy: jan.sm...@alcatel-lucent.com Created attachment 29074 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=29074 testcase Trunk, testcase attached. /tmp/ice.c: In function 'test': /tmp/ice.c:36:45: internal compiler error: in size_binop_loc, at fold-const.c:1385 if ((found_bit_mask[dqs][word] (1 j)) == 0) ^ 0x6de9b5 size_binop_loc(unsigned int, tree_code, tree_node*, tree_node*) ../../trunk/gcc/fold-const.c:1385 0x74c4ec gimplify_compound_lval ../../trunk/gcc/gimplify.c:2239 0x744f5f gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7146 0x7442b5 gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7459 0x74530b gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7814 0x74530b gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7814 0x74530b gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7814 0x7512bc gimplify_cond_expr ../../trunk/gcc/gimplify.c:3285 0x74542d gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7150 0x74d978 gimplify_stmt(tree_node**, gimple_statement_d**) ../../trunk/gcc/gimplify.c:5726 0x7449e3 gimplify_statement_list ../../trunk/gcc/gimplify.c:1562 0x7449e3 gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7583 0x74d978 gimplify_stmt(tree_node**, gimple_statement_d**) ../../trunk/gcc/gimplify.c:5726 0x74e898 gimplify_bind_expr ../../trunk/gcc/gimplify.c:1254 0x7455fe gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7365 0x74d978 gimplify_stmt(tree_node**, gimple_statement_d**) ../../trunk/gcc/gimplify.c:5726 0x751845 gimplify_cond_expr ../../trunk/gcc/gimplify.c:3349 0x74542d gimplify_expr(tree_node**, gimple_statement_d**, gimple_statement_d**, bool (*)(tree_node*), int) ../../trunk/gcc/gimplify.c:7150 0x74d978 gimplify_stmt(tree_node**, gimple_statement_d**) ../../trunk/gcc/gimplify.c:5726 0x7449e3 gimplify_statement_list ../../trunk/gcc/gimplify.c:1562
[Bug debug/54402] [4.8 Regression] var-tracking does not scale
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54402 --- Comment #25 from Jan Smets jan.sm...@alcatel-lucent.com 2012-12-24 00:37:18 UTC --- 55793 may be a duplicate, but the testcase is really different.
[Bug other/55793] New: Compile hog with -gdwarf-4 and -O2 (-fvar-tracking issue)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55793 Bug #: 55793 Summary: Compile hog with -gdwarf-4 and -O2 (-fvar-tracking issue) Classification: Unclassified Product: gcc Version: 4.6.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: other AssignedTo: unassig...@gcc.gnu.org ReportedBy: jan.sm...@alcatel-lucent.com Created attachment 29029 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=29029 testcase Following testcase takes a very long time to compile when debugging info is enabled. The 'real life' scenario contained around 900 entries. The testcase is reduced to 500. With more than 500 entries - variable tracking size limit exceeded. gcc -c test.c -o test.o -O2 -gdwarf-4 -fno-builtin
[Bug other/55793] Compile hog with -gdwarf-4 and -O2 (-fvar-tracking issue)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55793 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com 2012-12-22 20:44:32 UTC --- 85%+ of the time is spent in var-tracking dataflow. This may just be a duplicate of #54402 but the testcase there is different.
[Bug middle-end/52640] [4.8 Regression] performance bottleneck: gcc/tree.c;value_member
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52640 --- Comment #19 from Jan Smets jan.sm...@alcatel-lucent.com 2012-12-11 16:55:30 UTC --- Steven's example only contains 10 000 entries. I need to recompile a symbol table of 270.000 entries a dozen times each day. (and so do a lot of other people) With the 'fix' it still takes 12+ seconds to compile it on a state of the art machine and then another 4+ seconds to assemble. CLANG2.8 spends 15.5 sec and CLANG3.1 16.5 sec. I'm already happy with the work around but I'd really like to see a more structural solution, whichever that may be. Thanks
[Bug rtl-optimization/54524] [4.6/4.7 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524 --- Comment #9 from Jan Smets jan.sm...@alcatel-lucent.com 2012-11-03 18:25:32 UTC --- Verified. Thanks Andrew. (Should I mark it as Resolved?)
[Bug rtl-optimization/54524] Spurious add on sum of bitshifts (forward-propagate issue)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added Severity|normal |major
[Bug rtl-optimization/54524] Spurious add on sum of bitshifts (forward-propagate issue)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added Target|mips|mipsisa64-octeon-elf Known to work||4.5.0, 4.5.4 Known to fail||4.6.0, 4.6.3, 4.7.1, 4.8.0 --- Comment #2 from Jan Smets jan.sm...@alcatel-lucent.com 2012-09-18 12:41:43 UTC --- GCC 4.5.4 = CORRECT 0: 27bdffd0addiu sp,sp,-48 4: 97a5001clhu a1,28(sp) 8: 000427c0sll a0,a0,0x1f c: 00053600sll a2,a1,0x18 10: 3c030040lui v1,0x40 14: 00052a02srl a1,a1,0x8 18: 00a42821addua1,a1,a0 1c: 00c33821addua3,a2,v1 20: 3c024000lui v0,0x4000 24: 00e6302bsltua2,a3,a2 28: 00a21021adduv0,a1,v0 2c: 3c04lui a0,0x0 2c: R_MIPS_HI16 .rodata 30: 2484addiu a0,a0,0 30: R_MIPS_LO16 .rodata 34: afbf002csw ra,44(sp) 38: 0c00jal 0 function 38: R_MIPS_26 printf 3c: 00c23021addua2,a2,v0 = ! 40: 8fbf002clw ra,44(sp) 44: 03e8jr ra 48: 27bd0030addiu sp,sp,48 GCC 4.6.3 = 0: 27bdffd0addiu sp,sp,-48 4: 97a5001clhu a1,28(sp) 8: 3c030040lui v1,0x40 c: 3c024000lui v0,0x4000 10: 00054600sll t0,a1,0x18 14: 01033821addua3,t0,v1 18: 00052a02srl a1,a1,0x8 1c: 00e8402bsltut0,a3,t0 20: 00a21021adduv0,a1,v0 24: 000427c0sll a0,a0,0x1f 28: 01023021addua2,t0,v0 2c: 00c43021addua2,a2,a0 30: 3c04lui a0,0x0 30: R_MIPS_HI16 .rodata 34: 2484addiu a0,a0,0 34: R_MIPS_LO16 .rodata 38: afbf002csw ra,44(sp) 3c: 0c00jal 0 function 3c: R_MIPS_26 printf 40: 24c60001addiu a2,a2,1 = ! 44: 8fbf002clw ra,44(sp) 48: 03e8jr ra 4c: 27bd0030addiu sp,sp,48 GCC 4.8.0 = 0: 27bdffd0addiu sp,sp,-48 4: 97a6001clhu a2,28(sp) 8: 3c030040lui v1,0x40 c: 00062e00sll a1,a2,0x18 10: 00a33821addua3,a1,v1 14: 00063202srl a2,a2,0x8 18: 3c024000lui v0,0x4000 1c: 00e5282bsltua1,a3,a1 20: 00c21021adduv0,a2,v0 24: 000427c0sll a0,a0,0x1f 28: 00a21021adduv0,a1,v0 2c: 00443021addua2,v0,a0 30: 3c04lui a0,0x0 30: R_MIPS_HI16 .rodata 34: 2484addiu a0,a0,0 34: R_MIPS_LO16 .rodata 38: afbf002csw ra,44(sp) 3c: 0c00jal 0 function 3c: R_MIPS_26 printf 40: 24c60001addiu a2,a2,1= ! 44: 8fbf002clw ra,44(sp) 48: 03e8jr ra 4c: 27bd0030addiu sp,sp,48
[Bug rtl-optimization/54524] [4.6/4.7/4.8 Regression] Spurious add on sum of bitshifts (forward-propagate issue)
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524 --- Comment #3 from Jan Smets jan.sm...@alcatel-lucent.com 2012-09-18 21:49:21 UTC --- This commit introduced the bug: http://gcc.gnu.org/viewcvs?view=revisionrevision=161655 (or 182cf5a9a415f31df0f9a10e46faed1221484a35 in git)
[Bug rtl-optimization/54524] New: Spurious add on sum of bitshifts
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524
Bug #: 54524
Summary: Spurious add on sum of bitshifts
Classification: Unclassified
Product: gcc
Version: 4.6.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: jan.sm...@alcatel-lucent.com
There is an spurious addiua2,a2,1 which causes the result to be
incorrect.
tUint32 is unsigned long long
MIPS O32
GCC 4.6.3
-nostdinc -funsigned-char -fno-builtin -march=mips2 -G 0 -mno-gpopt
-msoft-float -fno-merge-constants -pipe -Wall -O2 -fno-optimize-sibling-calls
-fno-partial-inlining -fno-reorder-blocks -fno-strict-aliasing
PUBLIC void function(
tUint32 index160,
tUint8 * data)
{
tUint8temp_data[160/8];
tUint32 scrambled_address;
*(tUint64*)(temp_data+8) = *(tUint64*)(data+8);
scrambled_address = index160;
printf(%16llX.\n,
0x4040ull +
(((tUint64)*(tUint16*)(temp_data+12)) 24) +
((tUint64)(scrambled_address 0xFF) 56));
}
0x364c70c 27bdffd0addiusp,sp,-48
0x364c710 afbf002csw ra,44(sp)
0x364c714 8ca8000clw t0,12(a1) t0 = pp qq rr ss
0x364c718 3c030040lui v1,0x40 v1 = 00 40 00 00
0x364c71c 3c024000lui v0,0x4000 v0 = 40 00 00 00
0x364c720 00085402srl t2,t0,16t2 = 00 00 pp qq
0x364c724 000a4e00sll t1,t2,24t1 = qq 00 00 00
0x364c728 01233821addu a3,t1,v1a3 = qq 40 00 00
0x364c72c 000a5202srl t2,t2,8 t2 = 00 00 00 pp
0x364c730 00e9482bsltu t1,a3,t1t1 = carry?
0x364c734 01421021addu v0,t2,v0v0 = 40 00 00 pp
0x364c738 00042600sll a0,a0,24a0 = index160 24
0x364c73c 8ca30008lw v1,8(a1)
0x364c740 01221021addu v0,t1,v0v0 += carry
0x364c744 00443021addu a2,v0,a0a2 = v0 + index160 24
0x364c748 3c04066elui a0,0x66e\_ String address
0x364c74c 24842084addiua0,a0,8324 /
0x364c750 24c60001addiua2,a2,1 - Spurious add
0x364c754 afa30018sw v1,24(sp)
0x364c758 0cb402e1jal printf - Takes a0 = string. a1 = low word,
a2 = high word
0x364c75c afa8001csw t0,28(sp)
0x364c760 8fbf002clw ra,44(sp)
0x364c764 8fe0lw zero,0(ra) (internal extension)
0x364c768 03e8jr ra
0x364c76c 27bd0030addiusp,sp,48
[Bug rtl-optimization/54524] Spurious add on sum of bitshifts
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54524 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com 2012-09-08 13:18:48 UTC --- Created attachment 28152 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=28152 testcase The result is correct with -fno-forward-propagate tUint64 is unsigned long long I meant. An even more reduced testcase is attached. Compile it with a MIPS cross compiler: ./gcc -nostdinc -funsigned-char -fno-builtin -G 0 -mno-gpopt -msoft-float -fno-merge-constants -pipe -Wall -O2 -fno-optimize-sibling-calls -fno-partial-inlining -fno-reorder-blocks -fno-strict-aliasing -c /tmp/test.c -o test -mabi=32
[Bug c/53874] New: -Wswitch-enum not properly working with bitfields
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53874
Bug #: 53874
Summary: -Wswitch-enum not properly working with bitfields
Classification: Unclassified
Product: gcc
Version: 4.6.3
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: jan.sm...@alcatel-lucent.com
typedef enum
{
A,
B,
C
} tEnum;
typedef struct t_A
{
tEnum my_enum:4;
} tA;
int test(tA * bla)
{
switch(bla-my_enum)
{
default:
return 0;
}
}
I expect the compiler to complain:
test-enum.c:23: warning: enumeration value `A' not handled in switch
test-enum.c:23: warning: enumeration value `B' not handled in switch
test-enum.c:23: warning: enumeration value `C' not handled in switch
I verified this works in GCC 3.4 but not in GCC 4.6.
Thanks
[Bug c/53874] -Wswitch-enum not properly working with bitfields
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53874 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com 2012-07-06 13:09:29 UTC --- And if the :4 is removed, then it works as expected.
[Bug c/52640] performance bottleneck: gcc/tree.c;value_member
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52640 --- Comment #6 from Jan Smets jan.sm...@alcatel-lucent.com 2012-03-21 15:51:22 UTC --- Comment on attachment 26941 -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=26941 Needs an ASM_OUTPUT_EXTERNAL platform for testing Where does deferred_global_decls come from? Can this be modified to apply to 4.6.3 ? Target is i686-wrs-vxworks / mips-wrs-vxworks
[Bug middle-end/52640] [4.5/4.6/4.7/4.8 Regression] performance bottleneck: gcc/tree.c;value_member
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52640 --- Comment #10 from Jan Smets jan.sm...@alcatel-lucent.com 2012-03-21 19:46:31 UTC --- Works. ~13 sec for 243k entries. Still slower than GCC 3.4 but at least better than 80+ seconds.
[Bug c/52640] performance bottleneck: gcc/tree.c;value_member
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52640 --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com 2012-03-20 23:45:27 UTC --- I'd like to note that this code compiles in a few seconds in GCC 3.4. Thanks Neil for making this profile.
[Bug target/47739] gcc 4.4.5 with target powerpc-wrs-vxworks fails to compile
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47739 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added CC||jan.sm...@alcatel-lucent.co ||m --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com 2011-06-08 12:49:26 UTC --- I have this issue as well. My source (4.6) has #ifdef TARGET_POSIX_IO in libgcov.c to pick the correct mkdir (when TARGET_POSIX_IO is undefined). My target is i686-wrs-vxworks (and --with-headers=..) and TARGET_POSIX_IO is defined somehow. I tried disabling gcov with --disable-coverage or --enable-coverage=no , but it did not prevent the compile problems.
[Bug other/47733] psignal (int, const? char*) in libiberty/strsignal.h
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47733 Jan Smets jan.sm...@alcatel-lucent.com changed: What|Removed |Added CC||jan.sm...@alcatel-lucent.co ||m --- Comment #1 from Jan Smets jan.sm...@alcatel-lucent.com 2011-06-01 15:05:34 UTC --- I've seen this on 4.6.0 too. Solutions works.
