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* [Bug tree-optimization/98268] New: ICE: verify_gimple failed with LTO and SVE
@ 2020-12-14  8:16 acoplan at gcc dot gnu.org
  2021-01-04 14:33 ` [Bug tree-optimization/98268] " rguenth at gcc dot gnu.org
                   ` (11 more replies)
  0 siblings, 12 replies; 13+ messages in thread
From: acoplan at gcc dot gnu.org @ 2020-12-14  8:16 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98268

            Bug ID: 98268
           Summary: ICE: verify_gimple failed with LTO and SVE
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: acoplan at gcc dot gnu.org
  Target Milestone: ---

The following fails on the head of the GCC 10 branch (reproduced at
g:907525c3063e6ec5cf02790a5d5a37053c731401 with both an aarch64-elf cross and
natively on aarch64-linux-gnu):

$ cat a.c
short d, e;
void f(char, long*);
int main() {
  long x;
  f(-114, &x);
  return d == e;
}
$ cat b.c
extern short d[], e[];
void f(char a, long *b) {
  for (int c = 0; c < a - 12; c++) {
    d[c] = b[c];
    e[c] = 0;
  }
}
$ aarch64-elf-gcc a.c b.c -flto -O1 -march=armv8.2-a+sve -ftree-vectorize
-msve-vector-bits=128
a.c: In function 'main':
a.c:3:5: error: constant not recomputed when 'ADDR_EXPR' changed
    3 | int main() {
      |     ^
_59 = &MEM <vector(2) short int> [(short int *)&d + 256B];
a.c:3:5: error: constant not recomputed when 'ADDR_EXPR' changed
_64 = &MEM <vector(2) short int> [(short int *)&e + 256B];
during GIMPLE pass: dom
a.c:3:5: internal compiler error: verify_gimple failed
0xcbba04 verify_gimple_in_cfg(function*, bool)
        /home/alecop01/toolchain/src/gcc/gcc/tree-cfg.c:5492
0xb6dca8 execute_function_todo
        /home/alecop01/toolchain/src/gcc/gcc/passes.c:1985
0xb6dea2 do_per_function
        /home/alecop01/toolchain/src/gcc/gcc/passes.c:1640
0xb6e03d execute_todo
        /home/alecop01/toolchain/src/gcc/gcc/passes.c:2039
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.
lto-wrapper: fatal error: aarch64-elf-gcc returned 1 exit status
compilation terminated.
/home/alecop01/toolchain/build-aarch64-elf/install/lib/gcc/aarch64-elf/10.2.1/../../../../aarch64-elf/bin/ld:
error: lto-wrapper failed
collect2: error: ld returned 1 exit status

I haven't been able to reproduce the issue on trunk, however.

^ permalink raw reply	[flat|nested] 13+ messages in thread
end of thread, other threads:[~2021-04-23  9:12 UTC | newest]

Thread overview: 13+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-12-14  8:16 [Bug tree-optimization/98268] New: ICE: verify_gimple failed with LTO and SVE acoplan at gcc dot gnu.org
2021-01-04 14:33 ` [Bug tree-optimization/98268] " rguenth at gcc dot gnu.org
2021-01-04 15:01 ` acoplan at gcc dot gnu.org
2021-01-18 10:07 ` acoplan at gcc dot gnu.org
2021-01-18 10:42 ` [Bug tree-optimization/98268] [10 Regression] " ktkachov at gcc dot gnu.org
2021-01-18 10:47 ` acoplan at gcc dot gnu.org
2021-01-18 10:49 ` [Bug tree-optimization/98268] [10/11 " ktkachov at gcc dot gnu.org
2021-03-30 17:11 ` rsandifo at gcc dot gnu.org
2021-03-31 18:34 ` cvs-commit at gcc dot gnu.org
2021-03-31 20:36 ` [Bug tree-optimization/98268] [10 " rsandifo at gcc dot gnu.org
2021-04-08 12:02 ` rguenth at gcc dot gnu.org
2021-04-23  9:10 ` cvs-commit at gcc dot gnu.org
2021-04-23  9:12 ` rsandifo at gcc dot gnu.org

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