The rs6000.md copysign<mode>3 expander requires the mode to satisfy
FLOAT128_IEEE_P, so requiring float128 on ppc for ifn_copysign
effective target is hopefully a close-enough approximation.
gcc.dg/fold-copysign-1.c and gcc.dg/pr55152-2.c fail on ppc-elf
without this.
Regstrapped on powerpc64le-linux-gnu. Also tested with gcc-14 on
x86_64-linux-x-powerpc-elf. Ok to install?
for gcc/testsuite/ChangeLog
* lib/target-supports.exp (check_effective_target_ifn_copysign):
Require float128 on ppc.
---
gcc/testsuite/lib/target-supports.exp | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/testsuite/lib/target-supports.exp
b/gcc/testsuite/lib/target-supports.exp
index ee4138aa69714..1c64472bbc241 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -8379,7 +8379,8 @@ proc check_effective_target_ifn_copysign { } {
&& [is-effective-target sse])
|| ([istarget loongarch*-*-*]
&& [check_effective_target_hard_float])
- || [istarget powerpc*-*-*]
+ || ([istarget powerpc*-*-*]
+ && [check_ppc_float128_sw_available])
|| [istarget alpha*-*-*]
|| [istarget aarch64*-*-*]
|| [is-effective-target arm_neon]
--
Alexandre Oliva, happy hacker https://blog.lx.oliva.nom.br/
Free Software Activist FSFLA co-founder GNU Toolchain Engineer
More tolerance and less prejudice are key for inclusion and diversity.
Excluding neuro-others for not behaving ""normal"" is *not* inclusive!
