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authorPeter Collingbourne <pcc@google.com>2013-05-15 20:33:45 +0200
committerAndreas Jaeger <aj@suse.de>2013-05-15 20:33:45 +0200
commit1deff3dca1b11fd7089bb641f6ee99adedeb8d0b (patch)
treeccc968e03c4fcb95647f815845b800c21843611f /sysdeps/x86_64/fpu/math_private.h
parent791f3ba0db02911933255d080b8ff973330b9ebf (diff)
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Use movq for 64-bit operations
The EXTRACT_WORDS64 and INSERT_WORDS64 macros use movd for a 64-bit
operation.  Somehow gcc manages to turn this into movq, but LLVM won't.

2013-05-15  Peter Collingbourne  <pcc@google.com>

	* sysdeps/x86_64/fpu/math_private.h (MOVQ): New macro.
	(EXTRACT_WORDS64) Use where appropriate.
	(INSERT_WORDS64) Likewise.
Diffstat (limited to 'sysdeps/x86_64/fpu/math_private.h')
-rw-r--r--sysdeps/x86_64/fpu/math_private.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/sysdeps/x86_64/fpu/math_private.h b/sysdeps/x86_64/fpu/math_private.h
index 63a699e8fc..027a6a3a4d 100644
--- a/sysdeps/x86_64/fpu/math_private.h
+++ b/sysdeps/x86_64/fpu/math_private.h
@@ -5,15 +5,17 @@
 
 #if defined __AVX__ || defined SSE2AVX
 # define MOVD "vmovd"
+# define MOVQ "vmovq"
 #else
 # define MOVD "movd"
+# define MOVQ "movq"
 #endif
 
 /* Direct movement of float into integer register.  */
 #define EXTRACT_WORDS64(i, d)						      \
   do {									      \
     int64_t i_;								      \
-    asm (MOVD " %1, %0" : "=rm" (i_) : "x" ((double) (d)));		      \
+    asm (MOVQ " %1, %0" : "=rm" (i_) : "x" ((double) (d)));		      \
     (i) = i_;								      \
   } while (0)
 
@@ -22,7 +24,7 @@
   do {									      \
     int64_t i_ = i;							      \
     double d__;								      \
-    asm (MOVD " %1, %0" : "=x" (d__) : "rm" (i_));			      \
+    asm (MOVQ " %1, %0" : "=x" (d__) : "rm" (i_));			      \
     d = d__;								      \
   } while (0)