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| author | Kewen Lin <linkw@linux.ibm.com> | 2024-07-17 00:19:30 -0500 |
|---|---|---|
| committer | Kewen Lin <linkw@gcc.gnu.org> | 2024-07-17 00:19:30 -0500 |
| commit | dd4d71ca4d8d4252eb33a3202380524e6d43ba05 (patch) | |
| tree | 627f96e8b5a6fe1f15c5656e4ec1b87aa80a626c /gcc | |
| parent | b5c813ed6035cf6ef831927e66e184a5847afbe6 (diff) | |
| download | gcc-dd4d71ca4d8d4252eb33a3202380524e6d43ba05.zip gcc-dd4d71ca4d8d4252eb33a3202380524e6d43ba05.tar.gz gcc-dd4d71ca4d8d4252eb33a3202380524e6d43ba05.tar.bz2 | |
rs6000: Change optab for ibm128 and ieee128 conversion
Currently for 128 bit floating-point ibm128 and ieee128
formats conversion, the corresponding libcalls are:
ibm128 -> ieee128 "__trunctfkf2"
ieee128 -> ibm128 "__extendkftf2"
, and generic code handling (like convert_mode_scalar) also
adopts sext_optab for ieee128 -> ibm128 while trunc_optab
for ibm128 -> ieee128. But in rs6000 port as function
rs6000_expand_float128_convert and init_float128_ieee show,
we adopt sext_optab for ibm128 -> ieee128 with "__trunctfkf2"
while trunc_optab for ieee128 -> ibm128 with "__extendkftf2".
To make them consistent and avoid some surprises, this patch
is to adjust rs6000 internal handlings by adopting trunc_optab
for ibm128 -> ieee128 with "__trunctfkf2" while sext_optab for
ieee128 -> ibm128 with "__extendkftf2".
gcc/ChangeLog:
* config/rs6000/rs6000.cc (init_float128_ieee): Use trunc_optab rather
than sext_optab for converting FLOAT128_IBM_P mode to FLOAT128_IEEE_P
mode, and use sext_optab rather than trunc_optab for converting
FLOAT128_IEEE_P mode to FLOAT128_IBM_P mode.
(rs6000_expand_float128_convert): Likewise.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/rs6000/rs6000.cc | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/gcc/config/rs6000/rs6000.cc b/gcc/config/rs6000/rs6000.cc index 905e6cb6..2c0a7fc 100644 --- a/gcc/config/rs6000/rs6000.cc +++ b/gcc/config/rs6000/rs6000.cc @@ -11476,13 +11476,13 @@ init_float128_ieee (machine_mode mode) set_conv_libfunc (trunc_optab, SFmode, mode, "__trunckfsf2"); set_conv_libfunc (trunc_optab, DFmode, mode, "__trunckfdf2"); - set_conv_libfunc (sext_optab, mode, IFmode, "__trunctfkf2"); + set_conv_libfunc (trunc_optab, mode, IFmode, "__trunctfkf2"); if (mode != TFmode && FLOAT128_IBM_P (TFmode)) - set_conv_libfunc (sext_optab, mode, TFmode, "__trunctfkf2"); + set_conv_libfunc (trunc_optab, mode, TFmode, "__trunctfkf2"); - set_conv_libfunc (trunc_optab, IFmode, mode, "__extendkftf2"); + set_conv_libfunc (sext_optab, IFmode, mode, "__extendkftf2"); if (mode != TFmode && FLOAT128_IBM_P (TFmode)) - set_conv_libfunc (trunc_optab, TFmode, mode, "__extendkftf2"); + set_conv_libfunc (sext_optab, TFmode, mode, "__extendkftf2"); set_conv_libfunc (sext_optab, mode, SDmode, "__dpd_extendsdkf"); set_conv_libfunc (sext_optab, mode, DDmode, "__dpd_extendddkf"); @@ -15640,7 +15640,7 @@ rs6000_expand_float128_convert (rtx dest, rtx src, bool unsigned_p) case E_IFmode: case E_TFmode: if (FLOAT128_IBM_P (src_mode)) - cvt = sext_optab; + cvt = trunc_optab; else do_move = true; break; @@ -15702,7 +15702,7 @@ rs6000_expand_float128_convert (rtx dest, rtx src, bool unsigned_p) case E_IFmode: case E_TFmode: if (FLOAT128_IBM_P (dest_mode)) - cvt = trunc_optab; + cvt = sext_optab; else do_move = true; break; |