[llvm-commits] [llvm] r95299 - /llvm/trunk/lib/Target/X86/README-SSE.txt

[Chris Lattner]

Author: lattner
Date: Thu Feb  4 01:32:01 2010
New Revision: 95299

URL: http://llvm.org/viewvc/llvm-project?rev=95299&view=rev
Log:
move the PR6214 microoptzn to this file.

Modified:
    llvm/trunk/lib/Target/X86/README-SSE.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=95299&r1=95298&r2=95299&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/README-SSE.txt (original)
+++ llvm/trunk/lib/Target/X86/README-SSE.txt Thu Feb  4 01:32:01 2010
@@ -936,3 +936,21 @@
 
 //===---------------------------------------------------------------------===//
 
+These should compile into the same code (PR6214): Perhaps instcombine should
+canonicalize the former into the later?
+
+define float @foo(float %x) nounwind {
+  %t = bitcast float %x to i32
+  %s = and i32 %t, 2147483647
+  %d = bitcast i32 %s to float
+  ret float %d
+}
+
+declare float @fabsf(float %n)
+define float @bar(float %x) nounwind {
+  %d = call float @fabsf(float %x)
+  ret float %d
+}
+
+//===---------------------------------------------------------------------===//
+