[Bug target/11877] gcc should use xor trick with -Os
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=11877 Andrew Pinski changed: What|Removed |Added CC||jeffreyalaw at gmail dot com --- Comment #14 from Andrew Pinski --- *** Bug 41505 has been marked as a duplicate of this bug. ***
[Bug target/41505] GCC choosing poor code sequence for certain stores (x86)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41505 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Resolution|--- |DUPLICATE --- Comment #8 from Andrew Pinski --- This is a dup of bug 11877 which is now fixed on the trunk. *** This bug has been marked as a duplicate of bug 11877 ***
[Bug tree-optimization/50286] Missed optimization, fails to propagate bool
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50286
Andrew Pinski changed:
What|Removed |Added
Last reconfirmed|2011-12-14 00:00:00 |2021-7-26
--- Comment #2 from Andrew Pinski ---
EVRP is able to convert the loop to:
:
# i_3 = PHI <0(2), 1(3)>
_2 = i_3 * i_3;
printf ("%d\n", _2);
i_10 = i_3 == 0 ? 1 : 2;
if (flag_6 >= i_10)
goto ; [INV]
else
goto ; [INV]
flag_6 range is [0,1] even
[Bug fortran/101632] New: NON_RECURSIVE procedure prefix is unsupported. F2018 defaults to recursive procedures.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101632 Bug ID: 101632 Summary: NON_RECURSIVE procedure prefix is unsupported. F2018 defaults to recursive procedures. Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran Assignee: unassigned at gcc dot gnu.org Reporter: kargl at gcc dot gnu.org Target Milestone: ---
[Bug c++/101629] New: ICE: in cp_finish_decl, at cp/decl.c:7826
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101629
Bug ID: 101629
Summary: ICE: in cp_finish_decl, at cp/decl.c:7826
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: hewillk at gmail dot com
Target Milestone: ---
auto f(auto... args) {
if constexpr (auto x = [args]{});
}
int main() {
f(0, 0.4);
}
https://godbolt.org/z/WWr9hsWqh
[Bug tree-optimization/78888] toupper(x) can be assumed not to be in the range 'a' - 'z'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=7 Andrew Macleod changed: What|Removed |Added Resolution|--- |FIXED Status|NEW |RESOLVED CC||amacleod at redhat dot com --- Comment #3 from Andrew Macleod --- fixed
[Bug c/101630] New: ICE with -Wall: in get_constant, at c-family/c-format.c:325
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101630
Bug ID: 101630
Summary: ICE with -Wall: in get_constant, at
c-family/c-format.c:325
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: cnsun at uwaterloo dot ca
Target Milestone: ---
$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/scratch/software/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/12.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: /tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/configure
--enable-languages=c,c++,lto --enable-checking-yes --enable-multiarch
--prefix=/scratch/software/gcc-trunk --disable-bootstrap
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.0 20210726 (experimental) [master revision
:c09cf6429:124bb55777c280a85d0c72ec13e293a32917a6b9] (GCC)
$ cat mutant.c
printf(char[][], ...) { printf(printf); }
$ gcc-trunk -Wall mutant.c
mutant.c:1:12: error: array type has incomplete element type ‘char[]’
1 | printf(char[][], ...) { printf(printf); }
|^
mutant.c:1:12: note: declaration of multidimensional array must have bounds for
all dimensions except the first
mutant.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
1 | printf(char[][], ...) { printf(printf); }
| ^~
mutant.c: In function ‘printf’:
mutant.c:1:32: error: type of formal parameter 1 is incomplete
1 | printf(char[][], ...) { printf(printf); }
|^~
mutant.c:1:1: internal compiler error: in get_constant, at
c-family/c-format.c:325
1 | printf(char[][], ...) { printf(printf); }
| ^~
0x675c97 get_constant
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c-family/c-format.c:325
0x675c97 get_constant
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c-family/c-format.c:313
0x9b061e decode_format_attr
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c-family/c-format.c:377
0x9b2894 check_function_format(tree_node const*, tree_node*, int, tree_node**,
vec*)
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c-family/c-format.c:1173
0x9a1c86 check_function_arguments(unsigned int, tree_node const*, tree_node
const*, int, tree_node**, vec*)
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c-family/c-common.c:5981
0x92a0eb build_function_call_vec(unsigned int, vec, tree_node*, vec*, vec*, tree_node*)
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-typeck.c:3195
0x94b27a c_parser_postfix_expression_after_primary
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:10505
0x93bc65 c_parser_postfix_expression
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:10178
0x946141 c_parser_unary_expression
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:8224
0x94780f c_parser_cast_expression
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:8066
0x947abf c_parser_binary_expression
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:7869
0x948da8 c_parser_conditional_expression
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:7592
0x949420 c_parser_expr_no_commas
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:7507
0x9496b1 c_parser_expression
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:10641
0x949e87 c_parser_expression_conv
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:10680
0x95d2f3 c_parser_statement_after_labels
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:6249
0x95f594 c_parser_compound_statement_nostart
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:5788
0x95fc84 c_parser_compound_statement
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:5597
0x961672 c_parser_declaration_or_fndef
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:2539
0x968ff3 c_parser_external_declaration
/tmp/tmp.Tt2AkDfoq0-gcc-builder/gcc/gcc/c/c-parser.c:1777
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Note that with -Wall, gcc-trunk also crashes though with a different stack
trace.
mutant.c:1:12: error: array type has incomplete element type ‘char[]’
1 | printf(char[][], ...) { printf(printf); }
|^
mutant.c:1:12: note: declaration of multidimensional array must have bounds for
all dimensions except the first
mutant.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
1 | printf(char[][], ...) { printf(printf); }
| ^~
mutant.c: In function ‘printf’:
mutant.c:1:32: error: type of formal parameter 1 is incomplete
1 | printf(char[][], ...) { printf(printf); }
|^~
mutant.c:1:25: internal compiler error: tree check: expected class ‘type’
[Bug target/26656] Optimization flaw on conditional set of a bit.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=26656 Andrew Pinski changed: What|Removed |Added Component|tree-optimization |target Target||x86_64 --- Comment #9 from Andrew Pinski --- flagQuestion: .L2: cmpb%bpl, (%r12,%rax) setb%cl addl%ecx, %ecx orb %cl, (%rbx,%rax) addq$1, %rax cmpq$1, %rax jne .L2 flagQuestionWorkaround: .L7: cmpb%bpl, (%r12,%rax) setb%cl addl%ecx, %ecx orb %cl, (%rbx,%rax) addq$1, %rax cmpq$1, %rax jne .L7 flagIf: .L12: cmpb%bl, (%r12,%rax) jnb .L11 orb $2, 0(%rbp,%rax) .L11: addq$1, %rax cmpq$1, %rax jne .L12 flagIfWorkaround: .L16: cmpb%bpl, (%r12,%rax) setb%cl addl%ecx, %ecx orb %cl, (%rbx,%rax) addq$1, %rax cmpq$1, %rax jne .L16 There is not much be done with flagIf really since it is a conditional load/store.
[Bug target/49127] -Os generates constant mov instead of instruction xor and mov when zeroing
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=49127 Andrew Pinski changed: What|Removed |Added Resolution|--- |DUPLICATE Status|UNCONFIRMED |RESOLVED --- Comment #1 from Andrew Pinski --- This is a dup of bug 11877 and is fixed on the trunk. *** This bug has been marked as a duplicate of bug 11877 ***
[Bug fortran/101632] NON_RECURSIVE procedure prefix is unsupported. F2018 defaults to recursive procedures.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101632 --- Comment #1 from kargl at gcc dot gnu.org --- F2018 introduced the NON_RECURSIVE prefix for procedures and also made procedures recursive by default. This code is conforming to F2018. module bah contains ! ! non_recursive is F2018. ! non_recursive function foo(i) result(k) integer k integer, intent(in) :: i k = i end function foo ! ! Recursive has been around for awhile, and still in F2018 ! recursive function fib1(i) result(k) integer k integer, intent(in) :: i if (i <= 1) then k = i else k = fib1(i-1) + fib1(i - 2) end if end function fib1 ! ! This is recursive by default. ! function fib2(i) result(k) integer k integer, intent(in) :: i if (i <= 1) then k = i else k = fib2(i-1) + fib2(i - 2) end if end function fib2 end module bah program bar use bah integer i i = 9 print *, fib1(i), fib2(i) end program bar
[Bug fortran/101632] NON_RECURSIVE procedure prefix is unsupported. F2018 defaults to recursive procedures.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101632 --- Comment #2 from kargl at gcc dot gnu.org --- Created attachment 51207 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51207=edit Diff that implements F2018 NON_RECURSIVE and makes things recursive by default.
[Bug tree-optimization/24696] missing optimization in comparison of results of bit operations
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24696 Andrew Pinski changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED Target Milestone|--- |4.9.0 --- Comment #2 from Andrew Pinski --- >From ifcombine: optimizing bits or bits test to _3 & T != 0 with temporary T = b_6(D) | a_4(D) Merging blocks 2 and 3 Fixed by r0-128808.
[Bug tree-optimization/68136] missed tree-level optimization with redundant computations
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68136
Andrew Pinski changed:
What|Removed |Added
Last reconfirmed|2015-10-28 00:00:00 |2021-7-26
--- Comment #3 from Andrew Pinski ---
Improved for GCC 11 by r11-3207 . The testcase even was changed to show that it
is not fully fixed:
typedef long long s64;
int
foo (s64 a, s64 b, s64 c)
{
s64 d = a - b;
if (d == 0)
return a + c;
else
return b + c + d;
}
[Bug tree-optimization/78888] toupper(x) can be assumed not to be in the range 'a' - 'z'
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=7 --- Comment #4 from CVS Commits --- The master branch has been updated by Andrew Macleod : https://gcc.gnu.org/g:d5a8c1382718ae084d46ff9b8a26d6b1d0cb684c commit r12-2519-gd5a8c1382718ae084d46ff9b8a26d6b1d0cb684c Author: Andrew MacLeod Date: Mon Jul 26 17:25:06 2021 -0400 Confirm and Handle only ASCII in toupper and tolower ranges. PR tree-optimization/7 * gimple-range-fold.cc (get_letter_range): New. (fold_using_range::range_of_builtin_call): Call get_letter_range.
[Bug rtl-optimization/70782] zero-initialized long returned by value generates useless stores/loads to the stack
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70782 Andrew Pinski changed: What|Removed |Added Last reconfirmed||2021-07-26 Status|UNCONFIRMED |NEW Ever confirmed|0 |1 --- Comment #2 from Andrew Pinski --- Confirmed. Note the non-union case started to work with GCC 11.
[Bug target/67510] x86: Faster code is possible for integer absolute value
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67510 Andrew Pinski changed: What|Removed |Added See Also||https://gcc.gnu.org/bugzill ||a/show_bug.cgi?id=97873, ||https://gcc.gnu.org/bugzill ||a/show_bug.cgi?id=92651 Target Milestone|--- |11.0 Resolution|--- |FIXED Status|NEW |RESOLVED --- Comment #2 from Andrew Pinski --- Fixed by r10-5498 and r11-5429 .
[Bug tree-optimization/71461] missed optimization in conditional assignment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71461 Andrew Pinski changed: What|Removed |Added Last reconfirmed|2016-06-09 00:00:00 |2021-7-26 Severity|normal |enhancement
[Bug middle-end/19466] [meta-bug] bit-fields are non optimal
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19466 Andrew Pinski changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned at gcc dot gnu.org |pinskia at gcc dot gnu.org --- Comment #3 from Andrew Pinski --- Mine but I suspect this won't be until next year.
[Bug tree-optimization/24568] [meta-bug] Missed optimization: trivialization of silly code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24568 Andrew Pinski changed: What|Removed |Added Last reconfirmed|2008-11-22 10:41:24 |2021-7-26 --- Comment #10 from Andrew Pinski --- Hmm, For ILP32 the only thing we have left is: milliDiff_6 = -milliDiff_5(D); minutesDiff_13 = milliDiff_6 / 6; minutesDiff_8 = -minutesDiff_13; For LP64: milliDiff_8 = -milliDiff_7(D); _3 = milliDiff_8 / 1000; _12 = (int) _3; minutesDiff_13 = _12 / 60; minutesDiff_10 = -minutesDiff_13; ... _17 = milliDiff_7(D) / 1000; _5 = (int) _17; minutesDiff_16 = _5 / 60;
[Bug target/66663] gcc misses optimization emits useless test of (a & 31) with 32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3 Andrew Pinski changed: What|Removed |Added Status|UNCONFIRMED |RESOLVED Target Milestone|--- |9.0 Resolution|--- |FIXED --- Comment #2 from Andrew Pinski --- GCC 9+ is able to produce: foo(unsigned long long, int): .LFB0: .cfi_startproc movl4(%esp), %eax movl12(%esp), %ecx movl8(%esp), %edx shldl %eax, %edx sall%cl, %eax ret
[Bug target/84431] Suboptimal code for masked shifts (x86/x86-64)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84431 Andrew Pinski changed: What|Removed |Added CC||fuz at fuz dot su --- Comment #9 from Andrew Pinski --- *** Bug 3 has been marked as a duplicate of this bug. ***
[Bug target/66663] gcc misses optimization emits useless test of (a & 31) with 32
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3 Andrew Pinski changed: What|Removed |Added Resolution|FIXED |DUPLICATE --- Comment #3 from Andrew Pinski --- It was fixed by r9-62 which means this is a dup of bug 84431. *** This bug has been marked as a duplicate of bug 84431 ***
[Bug tree-optimization/101626] [12 Regression] ICE in verify_sra_access_forest, at tree-sra.c:2376
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101626 Andrew Pinski changed: What|Removed |Added Component|c |tree-optimization CC||pinskia at gcc dot gnu.org Target Milestone|--- |12.0
[Bug c++/55436] g++ compiles invalid code with child class of nested class in template class
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55436 Andrew Pinski changed: What|Removed |Added Resolution|--- |FIXED Status|NEW |RESOLVED Target Milestone|--- |7.0 See Also||https://gcc.gnu.org/bugzill ||a/show_bug.cgi?id=10200, ||https://gcc.gnu.org/bugzill ||a/show_bug.cgi?id=69753 --- Comment #12 from Andrew Pinski --- Fixed in GCC 7 by r7-755.
[Bug c++/51716] access to private member possible
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51716 Andrew Pinski changed: What|Removed |Added Target Milestone|--- |5.0 Resolution|--- |DUPLICATE Status|NEW |RESOLVED --- Comment #3 from Andrew Pinski --- Dup of bug 24926. *** This bug has been marked as a duplicate of bug 24926 ***
[Bug c++/24926] gcc ignores access level violation for anonymous structs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24926 Andrew Pinski changed: What|Removed |Added CC||kuba at et dot pl --- Comment #7 from Andrew Pinski --- *** Bug 51716 has been marked as a duplicate of this bug. ***
[Bug c++/52618] Explicit template specialization ignores access rights
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52618 Andrew Pinski changed: What|Removed |Added Resolution|--- |FIXED Status|NEW |RESOLVED Target Milestone|--- |4.8.0 --- Comment #3 from Andrew Pinski --- Fixed in GCC 4.8+.
[Bug c++/52761] [C++11] Missing diagnostic for opaque unscoped enum declaration without base
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52761
--- Comment #2 from Andrew Pinski ---
clang declared this as a GNU extention :)
:2:6: error: redeclaration of already-defined enum 'E' is a GNU
extension [-Werror,-Wgnu-redeclared-enum]
enum E; // illegal
^
:1:6: note: previous definition is here
enum E { X };
^
