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x86: Add a testcase for PR target/31799 

Add a testcase for PR target/31799 which was fixed by

commit 4f0473fe89
Author: Uros Bizjak <ubizjak@gmail.com>
Date:   Fri May 12 21:04:05 2017 +0200

    compare-elim.c (try_eliminate_compare): Canonicalize operation with embedded compare to [(set (reg:CCM) (compare:CCM...

            * compare-elim.c (try_eliminate_compare): Canonicalize
            operation with embedded compare to
            [(set (reg:CCM) (compare:CCM (operation) (immediate)))
             (set (reg) (operation)].

            * config/i386/i386.c (TARGET_FLAGS_REGNUM): New define.

in GCC 8.

	PR target/31799
	* gcc.target/i386/pr31799.c: New test.
This commit is contained in:
H.J. Lu 2020-11-17 06:01:41 -08:00
parent 0f6759240f
commit 7f87b4ef23
1 changed files with 12 additions and 0 deletions
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12
gcc/testsuite/gcc.target/i386/pr31799.c Normal file
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@ -0,0 +1,12 @@
/* { dg-do compile } */
/* { dg-options "-O2" } */
void
foo (int x, int *y, int *z)
{
*z = ++x;
if (x != 0)
*y = 1;
}
/* { dg-final { scan-assembler-not "test" } } */