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Re: [Patch] Teach genrecog/genoutput that scratch registers require write constraint modifiers 

gcc/

	* genrecog.c (validate_pattern): Allow empty constraints in
	a match_scratch.

From-SVN: r215397
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James Greenhalgh 2014-09-19 16:23:44 +00:00 committed by James Greenhalgh
parent d39d05a75b
commit bcd0e41fda
2 changed files with 6 additions and 0 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2014-09-19 James Greenhalgh <james.greenhalgh@arm.com>
* genrecog.c (validate_pattern): Allow empty constraints in
a match_scratch.
2014-09-19 Aldy Hernandez <aldyh@redhat.com>
* dwarf2out.c (decl_ultimate_origin): Update comment.

1
gcc/genrecog.c
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@ -461,6 +461,7 @@ validate_pattern (rtx pattern, rtx insn, rtx set, int set_code)
/* If a MATCH_SCRATCH is used in a context requiring an write-only
or read/write register, validate that. */
if (set_code == '='
&& constraints0
&& constraints0 != '='
&& constraints0 != '+')
{