[llvm-commits] [llvm] r93373 - in /llvm/trunk/lib/Target/X86: README-SSE.txt README.txt

[Chris Lattner]

Author: lattner
Date: Wed Jan 13 17:29:11 2010
New Revision: 93373

URL: http://llvm.org/viewvc/llvm-project?rev=93373&view=rev
Log:
this is an SSE-specific issue.

Modified:
    llvm/trunk/lib/Target/X86/README-SSE.txt
    llvm/trunk/lib/Target/X86/README.txt

Modified: llvm/trunk/lib/Target/X86/README-SSE.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/README-SSE.txt?rev=93373&r1=93372&r2=93373&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/README-SSE.txt (original)
+++ llvm/trunk/lib/Target/X86/README-SSE.txt Wed Jan 13 17:29:11 2010
@@ -916,3 +916,23 @@
 "load, add 1.0, store" is better done in the fp stack, etc.
 
 //===---------------------------------------------------------------------===//
+
+The X86 backend should be able to if-convert SSE comparisons like "ucomisd" to
+"cmpsd".  For example, this code:
+
+double d1(double x) { return x == x ? x : x + x; }
+
+Compiles into:
+
+_d1:
+	ucomisd	%xmm0, %xmm0
+	jnp	LBB1_2
+	addsd	%xmm0, %xmm0
+	ret
+LBB1_2:
+	ret
+
+Also, the 'ret's should be shared.  This is PR6032.
+
+//===---------------------------------------------------------------------===//
+

Modified: llvm/trunk/lib/Target/X86/README.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/README.txt?rev=93373&r1=93372&r2=93373&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/README.txt (original)
+++ llvm/trunk/lib/Target/X86/README.txt Wed Jan 13 17:29:11 2010
@@ -1868,23 +1868,3 @@
 information to add the "lock" prefix.
 
 //===---------------------------------------------------------------------===//
-
-The X86 backend should be able to if-convert SSE comparisons like "ucomisd" to
-"cmpsd".  For example, this code:
-
-double d1(double x) { return x == x ? x : x + x; }
-
-Compiles into:
-
-_d1:
-	ucomisd	%xmm0, %xmm0
-	jnp	LBB1_2
-	addsd	%xmm0, %xmm0
-	ret
-LBB1_2:
-	ret
-
-Also, the 'ret's should be shared.  This is PR6032.
-
-//===---------------------------------------------------------------------===//
-