Patchwork [i386] : Update *floathi<mode>2_i387_with_temp

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Submitter Uros Bizjak
Date Nov. 29, 2011, 5:58 p.m.
Message ID <CAFULd4a6c_2Eh7gb2YRE=3Xtwf7pg+1Je=Kdf1CnHNHwg4uDpg@mail.gmail.com>
Download mbox | patch
Permalink /patch/128308/
State New
Headers show

Comments

Uros Bizjak - Nov. 29, 2011, 5:58 p.m.
Hello!

We don't need scratch memory to convert value from memory.

2011-11-29  Uros Bizjak  <ubizjak@gmail.com>

	* config/i386/i386.md (*floathi<mode>2_i387_with_temp): Do not
	allocate scratch memory for alternative 0.

Tested on x86_64-pc-linux-gnu {,-m32} and committed to mainline SVN.

Uros.

Patch

Index: i386.md
===================================================================
--- i386.md	(revision 181804)
+++ i386.md	(working copy)
@@ -4679,7 +4679,7 @@ 
 (define_insn "*floathi<mode>2_i387_with_temp"
   [(set (match_operand:X87MODEF 0 "register_operand" "=f,f")
 	(float:X87MODEF (match_operand:HI 1 "nonimmediate_operand" "m,?r")))
-  (clobber (match_operand:HI 2 "memory_operand" "=m,m"))]
+  (clobber (match_operand:HI 2 "memory_operand" "=X,m"))]
   "TARGET_80387
    && (!(SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH)
        || TARGET_MIX_SSE_I387)"