r241898 - in /trunk/gcc: ChangeLog config/aarch...

[ktkachov@gcc.gnu.org]

Author: ktkachov
Date: Mon Nov  7 11:43:57 2016
New Revision: 241898

URL: https://gcc.gnu.org/viewcvs?rev=241898&root=gcc&view=rev
Log:
[AArch64] Fix PR target/77822: Use tighter predicates for zero_extract patterns

	PR target/77822
	* config/aarch64/aarch64.md (*tb<optab><mode>1): Use
	aarch64_simd_shift_imm_<mode> predicate for operand 1.
	(<optab>, ANY_EXTRACT): Use tighter predicates on operands 2 and 3
	to restrict them to an appropriate range and add FAIL check if the
	region they specify is out of range.  Delete useless constraint
	strings.
	(*<optab><mode>, ANY_EXTRACT): Add appropriate predicates on operands
	2 and 3 to restrict their range and add pattern predicate.

	* g++.dg/torture/pr77822.C: New test.


Added:
    trunk/gcc/testsuite/g++.dg/torture/pr77822.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/aarch64/aarch64.md
    trunk/gcc/testsuite/ChangeLog