[gcc(refs/users/aoliva/heads/testme)] testsuite: arm: update fast-math-complex-mls-half-float.c

[Alexandre Oliva]

https://gcc.gnu.org/g:838019345e2588da8432b808f95bd42604e47eb9

commit 838019345e2588da8432b808f95bd42604e47eb9
Author: Alexandre Oliva <oliva@adacore.com>
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" } } */