diff options
| author | Claudiu Zissulescu <claziss@synopsys.com> | 2016-04-29 10:39:22 +0200 |
|---|---|---|
| committer | Claudiu Zissulescu <claziss@gcc.gnu.org> | 2016-04-29 10:39:22 +0200 |
| commit | 7132ae191b105c7b2038dd842c391d0b414bc8b2 (patch) | |
| tree | 836c273f4dc60988425a41f3115b2d866f428521 /gcc/fold-const.c | |
| parent | 98998245d99f06946b4d5ed6744c77c3760f1141 (diff) | |
| download | gcc-7132ae191b105c7b2038dd842c391d0b414bc8b2.zip gcc-7132ae191b105c7b2038dd842c391d0b414bc8b2.tar.gz gcc-7132ae191b105c7b2038dd842c391d0b414bc8b2.tar.bz2 | |
[ARC] Fix unwanted match for sign extend 16-bit constant.
The combine pass may conclude umulhisi3_imm pattern can accept also sign
extended 16-bit constants. This patch prohibits the combine in considering
this pattern as suitable.
gcc/
2016-04-29 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.h (UNSIGNED_INT12, UNSIGNED_INT16): Define.
* config/arc/arc.md (umulhisi3): Use arc_short_operand predicate.
(umulhisi3_imm): Update predicates and constraint letters.
(umulhisi3_reg): Declare instruction as commutative.
* config/arc/constraints.md (J12, J16): New constraints.
* config/arc/predicates.md (short_unsigned_const_operand): New
predicate.
(arc_short_operand): Likewise.
* testsuite/gcc.target/arc/umulsihi3_z.c: New file.
From-SVN: r235623
Diffstat (limited to 'gcc/fold-const.c')
0 files changed, 0 insertions, 0 deletions