git.efficios.com Git - deliverable/binutils-gdb.git/commit

author	H.J. Lu <hjl.tools@gmail.com>
	Sat, 16 Mar 2019 23:25:08 +0000 (07:25 +0800)
committer	H.J. Lu <hjl.tools@gmail.com>
	Sat, 16 Mar 2019 23:25:22 +0000 (07:25 +0800)
commit	dd22218cf26fa5d8beade7266de391a28e63527b
tree	0f466caac1966f1a9b7af5675aba2440e428a7a0	tree \| snapshot
parent	ab42892fb7d265e72a85e918d4f5c6dfeee3fcd8	commit \| diff

x86: Correctly optimize EVEX to 128-bit VEX/EVEX

We can optimize 512-bit EVEX to 128-bit EVEX encoding for upper 16
vector registers only when AVX512VL is enabled. We can't optimize
EVEX to 128-bit VEX encoding when AVX isn't enabled.

PR gas/24352
* config/tc-i386.c (optimize_encoding): Encode 512-bit EVEX
with 128-bit VEX encoding only when AVX is enabled and with
128-bit EVEX encoding only when AVX512VL is enabled.
* testsuite/gas/i386/i386.exp: Run PR gas/24352 tests.
* testsuite/gas/i386/optimize-6.s: New file.
* testsuite/gas/i386/optimize-6a.d: Likewise.
* testsuite/gas/i386/optimize-6b.d: Likewise.
* testsuite/gas/i386/optimize-6c.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-7.s: Likewise.
* testsuite/gas/i386/x86-64-optimize-7a.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-7b.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-7c.d: Likewise.
* testsuite/gas/i386/x86-64-optimize-2.d: Updated.

gas/ChangeLog		diff \| blob \| blame \| history
gas/config/tc-i386.c		diff \| blob \| blame \| history
gas/testsuite/gas/i386/i386.exp		diff \| blob \| blame \| history
gas/testsuite/gas/i386/optimize-6.s	[new file with mode: 0644]	blob
gas/testsuite/gas/i386/optimize-6a.d	[new file with mode: 0644]	blob
gas/testsuite/gas/i386/optimize-6b.d	[new file with mode: 0644]	blob
gas/testsuite/gas/i386/optimize-6c.d	[new file with mode: 0644]	blob
gas/testsuite/gas/i386/x86-64-optimize-2.d		diff \| blob \| blame \| history
gas/testsuite/gas/i386/x86-64-optimize-7.s	[new file with mode: 0644]	blob
gas/testsuite/gas/i386/x86-64-optimize-7a.d	[new file with mode: 0644]	blob
gas/testsuite/gas/i386/x86-64-optimize-7b.d	[new file with mode: 0644]	blob
gas/testsuite/gas/i386/x86-64-optimize-7c.d	[new file with mode: 0644]	blob