https://gcc.gnu.org/g:56015c5bc150e7140088054f06c10c2ff4219a3f
commit r16-6164-g56015c5bc150e7140088054f06c10c2ff4219a3f Author: Richard Biener <[email protected]> Date: Tue Dec 16 13:08:19 2025 +0100 testsuite/123137 - fix FAIL of g++.dg/vect/pr64410.cc on i?86 The following works around SRA not being able to decompose an aggregate copy of std::complex because with x87 math ld/st pairs are not bit-preserving by adding -msse -mfpmath=sse. This avoids spurious failures of the testcase. PR testsuite/123137 * g++.dg/vect/pr64410.cc: Add -mfpmath=sse -msse on x86. Diff: --- gcc/testsuite/g++.dg/vect/pr64410.cc | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/gcc/testsuite/g++.dg/vect/pr64410.cc b/gcc/testsuite/g++.dg/vect/pr64410.cc index dd0256c2fe06..5bc92f74bd58 100644 --- a/gcc/testsuite/g++.dg/vect/pr64410.cc +++ b/gcc/testsuite/g++.dg/vect/pr64410.cc @@ -1,6 +1,9 @@ // { dg-do compile } // { dg-require-effective-target vect_double } // { dg-additional-options "-fexcess-precision=fast" } +// We require decomposing a structure copy to double load/store pairs which +// is not possible with x87 math. +// { dg-additional-options "-msse -mfpmath=sse" { target { x86_64-*-* i?86-*-* } } } // { dg-skip-if "requires hosted libstdc++ for vector" { ! hostedlib } } #include <vector> @@ -51,4 +54,4 @@ main(int argc, char** argv) return 0; } -// { dg-final { scan-tree-dump "pr64410.cc:46:29: optimized: loop vectorized" "vect" } } +// { dg-final { scan-tree-dump "pr64410.cc:49:29: optimized: loop vectorized" "vect" } }
