git.libre-soc.org Git - binutils-gdb.git/commit

author	Jan Beulich <jbeulich@suse.com>
	Mon, 1 Jul 2019 06:35:08 +0000 (08:35 +0200)
committer	Jan Beulich <jbeulich@suse.com>
	Mon, 1 Jul 2019 06:35:08 +0000 (08:35 +0200)
commit	5641ec015a191e0584fd4cae57bb3262f7a51735
tree	4a0364a281bb459f742a431a19448ef0e76d2083	tree
parent	79dec6b7baa243a4ada018a082491990adb6aec1	commit \| diff

x86: optimize AND/OR with twice the same register

It seems to be not uncommon for people to use AND or OR in this form for
just setting the status flags. TEST, which doesn't write to any
register other than EFLAGS, ought to be preferred. Make the change only
for -O2 and above though, at least for now.

13 files changed:

gas/ChangeLog		diff \| blob \| history
gas/config/tc-i386.c		diff \| blob \| history
gas/doc/c-i386.texi		diff \| blob \| history
gas/testsuite/gas/i386/i386.exp		diff \| blob \| history
gas/testsuite/gas/i386/optimize-2.d		diff \| blob \| history
gas/testsuite/gas/i386/optimize-2.s		diff \| blob \| history
gas/testsuite/gas/i386/optimize-2b.d	[new file with mode: 0644]	blob
gas/testsuite/gas/i386/x86-64-optimize-3.d		diff \| blob \| history
gas/testsuite/gas/i386/x86-64-optimize-3.s		diff \| blob \| history
gas/testsuite/gas/i386/x86-64-optimize-3b.d	[new file with mode: 0644]	blob
opcodes/ChangeLog		diff \| blob \| history
opcodes/i386-opc.tbl		diff \| blob \| history
opcodes/i386-tbl.h		diff \| blob \| history

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