From: Richard Biener <rguenther@suse.de>
Date: Tue, 16 Dec 2025 12:08:19 +0000 (+0100)
Subject: testsuite/123137 - fix FAIL of g++.dg/vect/pr64410.cc on i?86
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=56015c5bc150e7140088054f06c10c2ff4219a3f;p=thirdparty%2Fgcc.git

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 --git a/gcc/testsuite/g++.dg/vect/pr64410.cc b/gcc/testsuite/g++.dg/vect/pr64410.cc
index dd0256c2fe0..5bc92f74bd5 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" } }