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* [Bug c/111492] New: RISC-V: Dynamic LMUL picking incorrect LMUL
@ 2023-09-20  3:23 juzhe.zhong at rivai dot ai
  2023-10-15  2:53 ` [Bug target/111492] " juzhe.zhong at rivai dot ai
  0 siblings, 1 reply; 2+ messages in thread
From: juzhe.zhong at rivai dot ai @ 2023-09-20  3:23 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111492

            Bug ID: 111492
           Summary: RISC-V: Dynamic LMUL picking incorrect LMUL
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: juzhe.zhong at rivai dot ai
  Target Milestone: ---

#include <stdbool.h>
#include <assert.h>
struct A
{
  unsigned int a;
  unsigned char c1, c2;
  bool b1 : 1;
  bool b2 : 1;
  bool b3 : 1;
};

void
foo (const struct A *x, int y)
{
  int s = 0, i;
  for (i = 0; i < y; ++i)
    {
      const struct A a = x[i];
      s += a.b1 ? 1 : 0;
    }
  assert (s == 0);
    //__builtin_abort ();
}

int
main ()
{
  struct A x[100];
  int i;
  __builtin_memset (x, -1, sizeof (x));
  for (i = 0; i < 100; i++)
    {
      x[i].b1 = false;
      x[i].b2 = false;
      x[i].b3 = false;
    }
  foo (x, 100);
  return 0;
}

--param=riscv-autovec-lmul=dynamic.


Pick LMUL = 8 incorrectly which cause horrible register spillings.

^ permalink raw reply	[flat|nested] 2+ messages in thread
* [Bug target/111492] RISC-V: Dynamic LMUL picking incorrect LMUL
  2023-09-20  3:23 [Bug c/111492] New: RISC-V: Dynamic LMUL picking incorrect LMUL juzhe.zhong at rivai dot ai
@ 2023-10-15  2:53 ` juzhe.zhong at rivai dot ai
  0 siblings, 0 replies; 2+ messages in thread
From: juzhe.zhong at rivai dot ai @ 2023-10-15  2:53 UTC (permalink / raw)
  To: gcc-bugs

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111492

JuzheZhong <juzhe.zhong at rivai dot ai> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #1 from JuzheZhong <juzhe.zhong at rivai dot ai> ---
Fixed

^ permalink raw reply	[flat|nested] 2+ messages in thread
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2023-09-20  3:23 [Bug c/111492] New: RISC-V: Dynamic LMUL picking incorrect LMUL juzhe.zhong at rivai dot ai
2023-10-15  2:53 ` [Bug target/111492] " juzhe.zhong at rivai dot ai

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