diff options
| author | ssaraswati <ssaraswati@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-12-20 09:13:51 +0000 |
|---|---|---|
| committer | ssaraswati <ssaraswati@138bc75d-0d04-0410-961f-82ee72b054a4> | 2015-12-20 09:13:51 +0000 |
| commit | b9333137494f7d00bba18c9c2a53769f3a790c70 (patch) | |
| tree | 62f0bdc62d4027b4d465778be408d23f54f86398 | |
| parent | e98da821c1ee4450bbe40a0278cd75803706aa7c (diff) | |
| download | gcc-b9333137494f7d00bba18c9c2a53769f3a790c70.tar.gz | |
This series of patches are for fixing PR61441. This patch modifies code to use
REAL_VALUE_ISSIGNALING_NAN instead of REAL_VALUE_ISNAN to avoid the operatins
only for sNaN operands.
Bootstrapped & regression-tested on x86_64-linux-gnu.
gcc/
* fold-const.c (const_binop): Use REAL_VALUE_ISSIGNALING_NAN instead
of REAL_VALUE_ISNAN to avoid the operation for sNaN operands.
* simplify-rtx.c (simplify_const_binary_operation): Same.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@231857 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/fold-const.c | 5 | ||||
| -rw-r--r-- | gcc/simplify-rtx.c | 3 |
3 files changed, 12 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 5baddef391e..b7a146961f6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2015-12-20 Sujoy Saraswati <sujoy.saraswati@hpe.com> + + PR tree-optimization/61441 + * fold-const.c (const_binop): Use REAL_VALUE_ISSIGNALING_NAN instead + of REAL_VALUE_ISNAN to avoid the operation for sNaN operands. + * simplify-rtx.c (simplify_const_binary_operation): Same. + 2015-12-19 Jan Hubicka <hubicka@ucw.cz> PR middle-end/65337 diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 553a9c37d7a..fff0285bd13 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -1150,9 +1150,10 @@ const_binop (enum tree_code code, tree arg1, tree arg2) mode = TYPE_MODE (type); /* Don't perform operation if we honor signaling NaNs and - either operand is a NaN. */ + either operand is a signaling NaN. */ if (HONOR_SNANS (mode) - && (REAL_VALUE_ISNAN (d1) || REAL_VALUE_ISNAN (d2))) + && (REAL_VALUE_ISSIGNALING_NAN (d1) + || REAL_VALUE_ISSIGNALING_NAN (d2))) return NULL_TREE; /* Don't perform operation if it would raise a division diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 413d61b1759..225742ec73e 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -3892,7 +3892,8 @@ simplify_const_binary_operation (enum rtx_code code, machine_mode mode, real_convert (&f1, mode, CONST_DOUBLE_REAL_VALUE (op1)); if (HONOR_SNANS (mode) - && (REAL_VALUE_ISNAN (f0) || REAL_VALUE_ISNAN (f1))) + && (REAL_VALUE_ISSIGNALING_NAN (f0) + || REAL_VALUE_ISSIGNALING_NAN (f1))) return 0; if (code == DIV |