[llvm-commits] [llvm] r53386 - in /llvm/trunk: lib/Target/X86/X86InstrSSE.td test/CodeGen/X86/vec_set-J.ll

[Evan Cheng]

Author: evancheng
Date: Wed Jul  9 20:08:23 2008
New Revision: 53386

URL: http://llvm.org/viewvc/llvm-project?rev=53386&view=rev
Log:
Fix for PR2472. Use movss to set lower 32-bits of a zero XMM vector.

Added:
    llvm/trunk/test/CodeGen/X86/vec_set-J.ll
Modified:
    llvm/trunk/lib/Target/X86/X86InstrSSE.td

Modified: llvm/trunk/lib/Target/X86/X86InstrSSE.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86InstrSSE.td?rev=53386&r1=53385&r2=53386&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrSSE.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrSSE.td Wed Jul  9 20:08:23 2008
@@ -2870,6 +2870,8 @@
           (MOVLSS2PSrr (V_SET0), FR32:$src)>, Requires<[HasSSE2]>;
 def : Pat<(v4f32 (X86vzmovl (v4f32 VR128:$src))),
           (MOVLPSrr (V_SET0), VR128:$src)>, Requires<[HasSSE2]>;
+def : Pat<(v4i32 (X86vzmovl (v4i32 VR128:$src))),
+          (MOVLPSrr (V_SET0), VR128:$src)>, Requires<[HasSSE2]>;
 }
 
 // Splat v2f64 / v2i64

Added: llvm/trunk/test/CodeGen/X86/vec_set-J.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/vec_set-J.ll?rev=53386&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/X86/vec_set-J.ll (added)
+++ llvm/trunk/test/CodeGen/X86/vec_set-J.ll Wed Jul  9 20:08:23 2008
@@ -0,0 +1,10 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep movss
+; PR2472
+
+define <4 x i32> @a(<4 x i32> %a) nounwind {
+entry:
+        %vecext = extractelement <4 x i32> %a, i32 0
+        insertelement <4 x i32> zeroinitializer, i32 %vecext, i32 0
+        %add = add <4 x i32> %a, %0
+        ret <4 x i32> %add
+}