r274515 - in /trunk/gcc: ChangeLog config/aarch...

[rsandifo@gcc.gnu.org]

Author: rsandifo
Date: Thu Aug 15 08:37:14 2019
New Revision: 274515

URL: https://gcc.gnu.org/viewcvs?rev=274515&root=gcc&view=rev
Log:
[AArch64] Add MOVPRFX alternatives for SVE EXT patterns

We use EXT both to implement vec_extract for large indices and as a
permute.  In both cases we can use MOVPRFX to handle the case in which
the first input and output can't be tied.

2019-08-15  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/aarch64/aarch64-sve.md (*vec_extract<mode><Vel>_ext)
	(*aarch64_sve_ext<mode>): Add MOVPRFX alternatives.

gcc/testsuite/
	* gcc.target/aarch64/sve/ext_2.c: Expect a MOVPRFX.
	* gcc.target/aarch64/sve/ext_3.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/aarch64/sve/ext_3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/aarch64/aarch64-sve.md
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.target/aarch64/sve/ext_2.c