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| author | Joseph Myers <joseph@codesourcery.com> | 2020-11-06 21:55:19 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2020-11-06 21:55:19 +0000 |
| commit | 6c8e4f4d79e1c6fb239616e4e07cb46a8c3eb81a (patch) | |
| tree | 236697b91fdd8f1dde905d96c56830e3a6c368fc /gcc/fold-const-call.c | |
| parent | 43d3b7bc073df27800218b685e6d7dd78dd31905 (diff) | |
| download | gcc-6c8e4f4d79e1c6fb239616e4e07cb46a8c3eb81a.zip gcc-6c8e4f4d79e1c6fb239616e4e07cb46a8c3eb81a.tar.gz gcc-6c8e4f4d79e1c6fb239616e4e07cb46a8c3eb81a.tar.bz2 | |
builtins: Add DFP signaling NaN built-in functions
Add built-in functions __builtin_nansd32, __builtin_nansd64 and
__builtin_nansd128 to return signaling NaNs of decimal floating-point
types, analogous to the functions already present for binary
floating-point types.
This patch, independent of
<https://gcc.gnu.org/pipermail/gcc-patches/2020-October/557136.html>
(pending review), is in preparation for adding the <float.h> macros
for such signaling NaNs that are in C2x, analogous to the macros for
other types that are in that patch.
Bootstrapped with no regressions for x86_64-pc-linux-gnu. Also ran
the new tests for powerpc64le-linux-gnu to confirm they do work in the
case (hardware DFP) where floating-point exceptions are supported for
DFP.
gcc/
2020-11-06 Joseph Myers <joseph@codesourcery.com>
* builtins.def (BUILT_IN_NANSD32, BUILT_IN_NANSD64)
(BUILT_IN_NANSD128): New built-in functions.
* fold-const-call.c (fold_const_call): Handle the new built-in
functions.
* doc/extend.texi (__builtin_nansd32, __builtin_nansd64)
(__builtin_nansd128): Document.
* doc/sourcebuild.texi (Effective-Target Keywords): Document
fenv_exceptions_dfp.
gcc/testsuite/
2020-11-06 Joseph Myers <joseph@codesourcery.com>
* lib/target-supports.exp
(check_effective_target_fenv_exceptions_dfp): New.
* gcc.dg/dfp/builtin-snan-1.c, gcc.dg/dfp/builtin-snan-2.c: New
tests.
Diffstat (limited to 'gcc/fold-const-call.c')
| -rw-r--r-- | gcc/fold-const-call.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/fold-const-call.c b/gcc/fold-const-call.c index 11ed47d..3548fab 100644 --- a/gcc/fold-const-call.c +++ b/gcc/fold-const-call.c @@ -1300,6 +1300,9 @@ fold_const_call (combined_fn fn, tree type, tree arg) CASE_CFN_NANS: CASE_FLT_FN_FLOATN_NX (CFN_BUILT_IN_NANS): + case CFN_BUILT_IN_NANSD32: + case CFN_BUILT_IN_NANSD64: + case CFN_BUILT_IN_NANSD128: return fold_const_builtin_nan (type, arg, false); case CFN_REDUC_PLUS: |