[Bug c/85427] New: internal compiler error: in constant_lower_bound, at poly-int.h:1527

2018-04-16 Thread shlei930 at gmail dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85427

Bug ID: 85427
   Summary: internal compiler error: in constant_lower_bound, at
poly-int.h:1527
   Product: gcc
   Version: 8.0.1
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: c
  Assignee: unassigned at gcc dot gnu.org
  Reporter: shlei930 at gmail dot com
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/suhua/compilers/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 8.0.1 20180416 (experimental) [trunk revision 259396] (GCC)

$ gcc-trunk abc.c
during RTL pass: expand
abc.c: In function ‘fn1’:
abc.c:3:13: internal compiler error: in constant_lower_bound, at
poly-int.h:1527
 int fn1() { fn1(a, b, c, d, e, f, g, h, i, j, k); }
 ^~~~
0x5ff4f0 long constant_lower_bound<1u, long>(poly_int_pod<1u, long> const&)
../../gcc/gcc/poly-int.h:1527
0x5ff4f0 expand_call(tree_node*, rtx_def*, int)
../../gcc/gcc/calls.c:3763
0x9b26ab expand_expr_real_1(tree_node*, rtx_def*, machine_mode,
expand_modifier, rtx_def**, bool)
../../gcc/gcc/expr.c:11007
0x8ad45e expand_expr
../../gcc/gcc/expr.h:280
0x8ad45e expand_call_stmt
../../gcc/gcc/cfgexpand.c:2690
0x8ad45e expand_gimple_stmt_1
../../gcc/gcc/cfgexpand.c:3624
0x8ad45e expand_gimple_stmt
../../gcc/gcc/cfgexpand.c:3790
0x8ae4df expand_gimple_basic_block
../../gcc/gcc/cfgexpand.c:5819
0x8b30b7 execute
../../gcc/gcc/cfgexpand.c:6425
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.

$ cat abc.c
typedef struct { char type[90]; } t;
t a, b, c, d, e, f, g, h, i, j, k;
int fn1() { fn1(a, b, c, d, e, f, g, h, i, j, k); }

[Bug tree-optimization/85331] during GIMPLE pass, internal compiler error: Segmentation fault (-O1 and above)

2018-04-10 Thread shlei930 at gmail dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85331

--- Comment #1 from Suhua Lei  ---
Reproduce with this test case:

typedef long int64_t;
typedef double vecf __attribute__((vector_size(2 * sizeof(double;
void fn1() {
  vecf *r;
  vecf y = {};
  __attribute__((__vector_size__(2 * sizeof(int64_t
  int64_t m = {100};
  *r = __builtin_shuffle(y, m);
}

[Bug tree-optimization/85331] New: during GIMPLE pass, internal compiler error: Segmentation fault (-O1 and above)

2018-04-10 Thread shlei930 at gmail dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85331

Bug ID: 85331
   Summary: during GIMPLE pass, internal compiler error:
Segmentation fault (-O1 and above)
   Product: gcc
   Version: 8.0.1
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: tree-optimization
  Assignee: unassigned at gcc dot gnu.org
  Reporter: shlei930 at gmail dot com
  Target Milestone: ---

$ gcc-trunk -v
Using built-in specs.
COLLECT_GCC=gcc-trunk
COLLECT_LTO_WRAPPER=/home/suhua/compilers/trunk/root-gcc/libexec/gcc/x86_64-pc-linux-gnu/8.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc/configure --prefix=/home/suhua/compilers/trunk/root-gcc
--enable-languages=c,c++ --disable-werror --enable-multilib
Thread model: posix
gcc version 8.0.1 20180410 (experimental) [trunk revision 259265] (GCC)

$ gcc-trunk -O1 abc.c
during GIMPLE pass: ccp
abc.c: In function ‘fn1’:
abc.c:9:1: internal compiler error: Segmentation fault
 }
 ^
0xcbd6af crash_signal
../../gcc/gcc/toplev.c:325
0x9f6cae fold_vec_perm
../../gcc/gcc/fold-const.c:8951
0x9e4fee fold_ternary_loc(unsigned int, tree_code, tree_node*, tree_node*,
tree_node*, tree_node*)
../../gcc/gcc/fold-const.c:11747
0x102fac2 gimple_resimplify3(gimple**, code_helper*, tree_node*, tree_node**,
tree_node* (*)(tree_node*))
../../gcc/gcc/gimple-match-head.c:194
0x110fc27 gimple_simplify(gimple*, code_helper*, tree_node**, gimple**,
tree_node* (*)(tree_node*), tree_node* (*)(tree_node*))
../../gcc/gcc/gimple-match-head.c:693
0xa3847a gimple_fold_stmt_to_constant_1(gimple*, tree_node* (*)(tree_node*),
tree_node* (*)(tree_node*))
../../gcc/gcc/gimple-fold.c:6099
0xdc5441 ccp_fold
../../gcc/gcc/tree-ssa-ccp.c:1258
0xdc5441 evaluate_stmt
../../gcc/gcc/tree-ssa-ccp.c:1786
0xdc7515 visit_assignment
../../gcc/gcc/tree-ssa-ccp.c:2355
0xdc75d2 ccp_propagate::visit_stmt(gimple*, edge_def**, tree_node**)
../../gcc/gcc/tree-ssa-ccp.c:2433
0xe4a103 ssa_propagation_engine::simulate_stmt(gimple*)
../../gcc/gcc/tree-ssa-propagate.c:237
0xe4a48a ssa_propagation_engine::simulate_block(basic_block_def*)
../../gcc/gcc/tree-ssa-propagate.c:371
0xe4b696 ssa_propagation_engine::ssa_propagate()
../../gcc/gcc/tree-ssa-propagate.c:800
0xdc0373 do_ssa_ccp
../../gcc/gcc/tree-ssa-ccp.c:2474
0xdc0373 execute
../../gcc/gcc/tree-ssa-ccp.c:2518
Please submit a full bug report,
with preprocessed source if appropriate.

$ cat abc.c
#include 
typedef double vecf __attribute__((vector_size(2 * sizeof(double;
typedef int64_t veci __attribute__((vector_size(2 * sizeof(int64_t;
void fn1() {
  vecf *r;
  vecf y = {};
  veci m = {100};
  *r = __builtin_shuffle(y, m);
}

[Bug tree-optimization/84417] New: internal compiler error: verify_gimple failed

2018-02-16 Thread shlei930 at gmail dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84417

Bug ID: 84417
   Summary: internal compiler error: verify_gimple failed
   Product: gcc
   Version: 8.0.1
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: tree-optimization
  Assignee: unassigned at gcc dot gnu.org
  Reporter: shlei930 at gmail dot com
  Target Milestone: ---

$gcc-trunk -v
gcc version 8.0.1 20180208 (experimental) [trunk revision 257504] (GCC)
Target: x86_64-pc-linux-gnu
Thread model: posix

$gcc-trunk -O3 -c abc.c
abc.c:1:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
 fn1() {
 ^~~
abc.c: In function ‘fn1’:
abc.c:3:15: warning: initialization of ‘double *’ from incompatible pointer
type ‘__vector(1) double *’ [-Wincompatible-pointer-types]
   double *a = 
   ^
abc.c:5:1: error: invalid position or size operand to BIT_FIELD_REF
 }
 ^
BIT_FIELD_REF <x_7(D), 64, 0x54e373edd85c0>
abc.c:4:8: note: in statement
   *a + *(a + 8446744073709551615);
^~
_3 = BIT_FIELD_REF <x_7(D), 64, 0x54e373edd85c0>;
during GIMPLE pass: ccp
abc.c:5:1: internal compiler error: verify_gimple failed
 }
 ^
0xcf97e3 verify_gimple_in_cfg(function*, bool)
../../gcc/gcc/tree-cfg.c:5575
0xbd8d5f execute_function_todo
../../gcc/gcc/passes.c:1994
0xbd9cae execute_todo
../../gcc/gcc/passes.c:2048
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.

$cat abc.c
fn1() {
  __attribute__((__vector_size__(sizeof(double double x;
  double *a = 
  *a + *(a + 8446744073709551615);
}

[Bug tree-optimization/84416] New: internal compiler error: in int_cst_value, at tree.c:11089

2018-02-16 Thread shlei930 at gmail dot com 
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84416

Bug ID: 84416
   Summary: internal compiler error: in int_cst_value, at
tree.c:11089
   Product: gcc
   Version: 8.0.1
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: tree-optimization
  Assignee: unassigned at gcc dot gnu.org
  Reporter: shlei930 at gmail dot com
  Target Milestone: ---

It seems gcc version 5.4.1, version 6.3.0, version 7.2.0 also have similar
problems when complied with -O3. gcc version 4.8.5 is able to compile.

$gcc-trunk -v
gcc version 8.0.1 20180208 (experimental) [trunk revision 257504] (GCC)
Target: x86_64-pc-linux-gnu
Thread model: posix

$gcc-trunk -O3 -c abc.c
abc.c:1:8: warning: type defaults to ‘int’ in declaration of ‘a’
[-Wimplicit-int]
 static a[];
^
abc.c:2:1: warning: data definition has no type or storage class
 b;
 ^
abc.c:2:1: warning: type defaults to ‘int’ in declaration of ‘b’
[-Wimplicit-int]
abc.c:3:1: warning: return type defaults to ‘int’ [-Wimplicit-int]
 fn1() {
 ^~~
abc.c: In function ‘fn1’:
abc.c:5:18: warning: integer constant is so large that it is unsigned
 a[b] = a[b - 18446744073709551607];
  ^~~~
during GIMPLE pass: pcom
abc.c:3:1: internal compiler error: in int_cst_value, at tree.c:11089
 fn1() {
 ^~~
0x6f687c int_cst_value(tree_node const*)
../../gcc/gcc/tree.c:11089
0x14fddab analyze_subscript_affine_affine
../../gcc/gcc/tree-data-ref.c:3609
0x1502ed4 analyze_siv_subscript
../../gcc/gcc/tree-data-ref.c:3926
0x1502ed4 analyze_overlapping_iterations
../../gcc/gcc/tree-data-ref.c:4156
0x1502ed4 subscript_dependence_tester_1
../../gcc/gcc/tree-data-ref.c:4697
0x1503427 subscript_dependence_tester_1
../../gcc/gcc/tree-data-ref.c:4693
0x1503427 subscript_dependence_tester
../../gcc/gcc/tree-data-ref.c:4747
0x1503427 compute_affine_dependence(data_dependence_relation*, loop*)
../../gcc/gcc/tree-data-ref.c:4806
0x1504fec compute_all_dependences(vec<data_reference*, va_heap, vl_ptr>,
vec<data_dependence_relation*, va_heap, vl_ptr>*, vec<loop*, va_heap, vl_ptr>,
bool)
../../gcc/gcc/tree-data-ref.c:4873
0x15057da compute_data_dependences_for_loop(loop*, bool, vec<loop*, va_heap,
vl_ptr>*, vec<data_reference*, va_heap, vl_ptr>*,
vec<data_dependence_relation*, va_heap, vl_ptr>*)
../../gcc/gcc/tree-data-ref.c:5272
0xd76d09 tree_predictive_commoning_loop
../../gcc/gcc/tree-predcom.c:3190
0xd79d5d tree_predictive_commoning()
../../gcc/gcc/tree-predcom.c:3312
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.

$cat abc.c
static a[];
b;
fn1() {
  for (;; b++)
a[b] = a[b - 18446744073709551607];
}