https://gcc.gnu.org/g:37cfec3a0d22c821f3f838d6f81cb95b81f698b1
commit 37cfec3a0d22c821f3f838d6f81cb95b81f698b1 Author: Alexandre Oliva <[email protected]> Date: Fri Jan 16 19:23:27 2026 -0300 testsuite: arm: update fast-math-complex-mls-half-float.c Since the addition of DCE after complex lowering, reassoc1 has no longer been impeded by COMPLEX_EXPRs, so it changes (a - (b + c)), where (b + c) is the imaginary part of an intermediate complex value, to ((a - b) - c), and this prevents the vectorizer from recognizing the expected COMPLEX_ADD_ROT270 pattern in fms_elemconjsnd. Stop expecting that pattern to be found on that test. for gcc/testsuite/ChangeLog * gcc.dg/vect/complex/fast-math-complex-mls-half-float.c: Don't expect COMPLEX_ADD_ROT270. Diff: --- gcc/testsuite/gcc.dg/vect/complex/fast-math-complex-mls-half-float.c | 1 - 1 file changed, 1 deletion(-) diff --git a/gcc/testsuite/gcc.dg/vect/complex/fast-math-complex-mls-half-float.c b/gcc/testsuite/gcc.dg/vect/complex/fast-math-complex-mls-half-float.c index fb7e9a5619e9..5ce5ae0b9912 100644 --- a/gcc/testsuite/gcc.dg/vect/complex/fast-math-complex-mls-half-float.c +++ b/gcc/testsuite/gcc.dg/vect/complex/fast-math-complex-mls-half-float.c @@ -7,6 +7,5 @@ #define TYPE _Float16 #define N 200 #include "complex-mls-template.c" -/* { dg-final { scan-tree-dump "Found COMPLEX_ADD_ROT270" "vect" } } */ /* { dg-final { scan-tree-dump "Found COMPLEX_FMS_CONJ" "vect" } } */ /* { dg-final { scan-tree-dump "Found COMPLEX_FMS" "vect" } } */
