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Mark IFN_COMPLEX_MUL as commutative

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gcc/
	* internal-fn.c (commutative_binary_fn_p): Handle IFN_COMPLEX_MUL.

gcc/testsuite/
	* gcc.target/aarch64/sve/complex_mul_1.c: New test.
This commit is contained in:
Richard Sandiford 2021-11-30 09:52:26 +00:00
parent e9fff24cd2
commit 71207246b0
2 changed files with 17 additions and 0 deletions
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1
gcc/internal-fn.c
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@ -3831,6 +3831,7 @@ commutative_binary_fn_p (internal_fn fn)
case IFN_MULHRS:
case IFN_FMIN:
case IFN_FMAX:
case IFN_COMPLEX_MUL:
return true;
default:

16
gcc/testsuite/gcc.target/aarch64/sve/complex_mul_1.c Normal file
View File

@ -0,0 +1,16 @@
/* { dg-options "-O2 -fgimple -fdump-tree-optimized" } */
void __GIMPLE
foo (__SVFloat64_t x, __SVFloat64_t y, __SVFloat64_t *res1,
__SVFloat64_t *res2)
{
__SVFloat64_t a1;
__SVFloat64_t a2;
a1 = .COMPLEX_MUL (x, y);
a2 = .COMPLEX_MUL (y, x);
__MEM<__SVFloat64_t> (res1) = a1;
__MEM<__SVFloat64_t> (res2) = a2;
}
/* { dg-final { scan-tree-dump-times {\.COMPLEX_MUL} 1 "optimized" } } */