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* [gcc(refs/users/meissner/heads/work048)] Fix nanq functions if long double is IEEE 128-bit on PowerPC.
@ 2021-04-15 17:21 Michael Meissner
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From: Michael Meissner @ 2021-04-15 17:21 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:bb897b9b852dc0489534933c3fd45ce9a7d8b123
commit bb897b9b852dc0489534933c3fd45ce9a7d8b123
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Thu Apr 15 13:21:18 2021 -0400
Fix nanq functions if long double is IEEE 128-bit on PowerPC.
gcc/
2021-04-15 Michael Meissner <meissner@linux.ibm.com>
* config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): If long
double is IEEE-128 map the nanq built-in functions to the long
double function, not the f128 function.
Diff:
---
gcc/config/rs6000/rs6000-c.c | 31 ++++++++++++++++++++++++-------
1 file changed, 24 insertions(+), 7 deletions(-)
diff --git a/gcc/config/rs6000/rs6000-c.c b/gcc/config/rs6000/rs6000-c.c
index 0f8a629ff5a..ae4c61287d8 100644
--- a/gcc/config/rs6000/rs6000-c.c
+++ b/gcc/config/rs6000/rs6000-c.c
@@ -686,15 +686,32 @@ rs6000_cpu_cpp_builtins (cpp_reader *pfile)
builtin_define ("__builtin_vsx_xvnmsubmsp=__builtin_vsx_xvnmsubsp");
}
- /* Map the old _Float128 'q' builtins into the new 'f128' builtins. */
+ /* Map the old _Float128 'q' builtins into the new 'f128' builtins if long
+ double is IBM or 64-bit.
+
+ However, if long double is IEEE 128-bit, map both sets of built-in
+ functions to the normal long double version. This shows up in nansf128
+ vs. nanf128. */
if (TARGET_FLOAT128_TYPE)
{
- builtin_define ("__builtin_fabsq=__builtin_fabsf128");
- builtin_define ("__builtin_copysignq=__builtin_copysignf128");
- builtin_define ("__builtin_nanq=__builtin_nanf128");
- builtin_define ("__builtin_nansq=__builtin_nansf128");
- builtin_define ("__builtin_infq=__builtin_inff128");
- builtin_define ("__builtin_huge_valq=__builtin_huge_valf128");
+ if (FLOAT128_IEEE_P (TFmode))
+ {
+ builtin_define ("__builtin_fabsq=__builtin_fabsl");
+ builtin_define ("__builtin_copysignq=__builtin_copysignl");
+ builtin_define ("__builtin_nanq=__builtin_nanl");
+ builtin_define ("__builtin_nansq=__builtin_nansl");
+ builtin_define ("__builtin_infq=__builtin_infl");
+ builtin_define ("__builtin_huge_valq=__builtin_huge_vall");
+ }
+ else
+ {
+ builtin_define ("__builtin_fabsq=__builtin_fabsf128");
+ builtin_define ("__builtin_copysignq=__builtin_copysignf128");
+ builtin_define ("__builtin_nanq=__builtin_nanf128");
+ builtin_define ("__builtin_nansq=__builtin_nansf128");
+ builtin_define ("__builtin_infq=__builtin_inff128");
+ builtin_define ("__builtin_huge_valq=__builtin_huge_valf128");
+ }
}
/* Tell users they can use __builtin_bswap{16,64}. */
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