re PR middle-end/6205 (-O -fpmath=sse breaks visibility of register accumulated sum)

	PR middle-end/6205
	* config/i386/i386.md (movsf_1): Use pxor only if TARGET_SSE2,
	otherwise xorps.

From-SVN: r52464

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 759efc3ea88e82a45c79105120f6c475e37775c0..b2ba0f77aa8ec1e6b2fd36f3d861ec572a9ac842 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2002-04-18  Jakub Jelinek  <jakub@redhat.com>
+
+       PR middle-end/6205
+       * config/i386/i386.md (movsf_1): Use pxor only if TARGET_SSE2,
+       otherwise xorps.
+
 2002-04-17  NIIBE Yutaka  <gniibe@m17n.org>
 
        * config/sh/elf.h: Undefine ASM_OUTPUT_CASE_LABEL.

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 8b3ee78d78d861a2e43c895c827b3152f167f6dd..06ec26ef3f539cf6d63f67d1f8266c8db3e35a8a 100644 (file)
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -2754,7 +2754,10 @@
     case 4:
       return "mov{l}\t{%1, %0|%0, %1}";
     case 5:
-      return "pxor\t%0, %0";
+      if (TARGET_SSE2)
+       return "pxor\t%0, %0";
+      else
+       return "xorps\t%0, %0";
     case 6:
       if (TARGET_PARTIAL_REG_DEPENDENCY)
        return "movaps\t{%1, %0|%0, %1}";