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| author | Tejas Joshi <tejasjoshi9673@gmail.com> | 2019-08-26 12:32:29 +0000 |
|---|---|---|
| committer | Martin Jambor <jamborm@gcc.gnu.org> | 2019-08-26 14:32:29 +0200 |
| commit | 7d7b99f95bf2517caab5f9300090b471135b4fc0 (patch) | |
| tree | c215f66b35c9f3508ceb670fbaeae05b7d223c3d /gcc/fold-const.c | |
| parent | 48a31a09839b12127ce7c40d7adc4bd5bf1d3407 (diff) | |
| download | gcc-7d7b99f95bf2517caab5f9300090b471135b4fc0.zip gcc-7d7b99f95bf2517caab5f9300090b471135b4fc0.tar.gz gcc-7d7b99f95bf2517caab5f9300090b471135b4fc0.tar.bz2 | |
Builtin function roundeven folding implementation
2019-08-26 Tejas Joshi <tejasjoshi9673@gmail.com>
* builtins.c (mathfn_built_in_2): Added CASE_MATHFN_FLOATN
for ROUNDEVEN.
* builtins.def: Added function definitions for roundeven function
variants.
* fold-const-call.c (fold_const_call_ss): Added case for roundeven
function call. Adjust condition for floor, ceil, trunc and round.
* fold-const.c (negate_mathfn_p): Added case for roundeven function.
(tree_call_nonnegative_warnv_p): Added case for roundeven function.
(integer_valued_real_call_p): Added case for roundeven function.
* real.c (is_even): New function. Returns true if real number is even,
otherwise returns false.
(is_halfway_below): New function. Returns true if real number is
halfway between two integers, else return false.
(real_roundeven): New function. Round real number to nearest integer,
rounding halfway cases towards even.
* real.h (real_value): Added descriptive comments. Added function
declaration for roundeven function.
* doc/extend.texi (Other Builtins): List roundeven variants among
functions which can be handled as builtins.
gcc/testsuite/ChangeLog:
2019-08-26 Tejas Joshi <tejasjoshi9673@gmail.com>
* gcc.dg/torture/builtin-round-roundeven.c: New test.
* gcc.dg/torture/builtin-round-roundevenf128.c: New test.
From-SVN: r274927
Diffstat (limited to 'gcc/fold-const.c')
| -rw-r--r-- | gcc/fold-const.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 8c711ab..0376cdb 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -329,6 +329,8 @@ negate_mathfn_p (combined_fn fn) CASE_CFN_LLROUND: CASE_CFN_LROUND: CASE_CFN_ROUND: + CASE_CFN_ROUNDEVEN: + CASE_CFN_ROUNDEVEN_FN: CASE_CFN_SIN: CASE_CFN_SINH: CASE_CFN_TAN: @@ -13107,6 +13109,8 @@ tree_call_nonnegative_warnv_p (tree type, combined_fn fn, tree arg0, tree arg1, CASE_CFN_RINT_FN: CASE_CFN_ROUND: CASE_CFN_ROUND_FN: + CASE_CFN_ROUNDEVEN: + CASE_CFN_ROUNDEVEN_FN: CASE_CFN_SCALB: CASE_CFN_SCALBLN: CASE_CFN_SCALBN: @@ -13630,6 +13634,8 @@ integer_valued_real_call_p (combined_fn fn, tree arg0, tree arg1, int depth) CASE_CFN_RINT_FN: CASE_CFN_ROUND: CASE_CFN_ROUND_FN: + CASE_CFN_ROUNDEVEN: + CASE_CFN_ROUNDEVEN_FN: CASE_CFN_TRUNC: CASE_CFN_TRUNC_FN: return true; |