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* [gcc(refs/users/meissner/heads/work078)] Use correct names for __ibm128 if long double is IEEE 128-bit.
@ 2022-02-08 21:46 Michael Meissner
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From: Michael Meissner @ 2022-02-08 21:46 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:71a7116e72859825a419efd6971a3bfff8f25697
commit 71a7116e72859825a419efd6971a3bfff8f25697
Author: Michael Meissner <meissner@linux.ibm.com>
Date: Tue Feb 8 16:46:01 2022 -0500
Use correct names for __ibm128 if long double is IEEE 128-bit.
If you are on a PowerPC system where the default long double is IEEE
128-bit, GCC will use the wrong names for some of the conversion functions
for the __ibm128 type.
What is happening is when the defult long double is IEEE 128-bit, the
various convert, truncation, and extend functions did not specify a
default name for the conversion. The machine indepentent portions of the
compiler would construct a call with an 'if' name (IFmode being the mode
for IBM 128-bit floating point). This patch specifies to use the
tradiational 'tf' name for these conversion functions.
2022-02-08 Michael Meissner <meissner@the-meissners.org>
gcc/
PR target/104253
* config/rs6000/rs6000.cc (init_float128_ibm): Use the TF names
for builtin conversions between __ibm128 and DImode when long
double uses the IEEE 128-bit format.
gcc/testsuite/
PR target/104253
* gcc.target/powerpc/pr104253.c: New test.
Diff:
---
gcc/config/rs6000/rs6000.cc | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc
index e2d94421ae9..f56cf66313a 100644
--- a/gcc/config/rs6000/rs6000.cc
+++ b/gcc/config/rs6000/rs6000.cc
@@ -10984,6 +10984,12 @@ init_float128_ibm (machine_mode mode)
set_conv_libfunc (trunc_optab, DDmode, mode, "__dpd_trunctfdd");
set_conv_libfunc (sext_optab, TDmode, mode, "__dpd_extendtftd");
+ set_conv_libfunc (sfix_optab, DImode, mode, "__fixtfdi");
+ set_conv_libfunc (ufix_optab, DImode, mode, "__fixunstfdi");
+
+ set_conv_libfunc (sfloat_optab, mode, DImode, "__floatditf");
+ set_conv_libfunc (ufloat_optab, mode, DImode, "__floatunditf");
+
if (TARGET_POWERPC64)
{
set_conv_libfunc (sfix_optab, TImode, mode, "__fixtfti");
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