[llvm-commits] [llvm] r50874 - in /llvm/trunk: lib/Target/X86/X86InstrSSE.td test/CodeGen/X86/vec_set-E.ll

[Evan Cheng]

Author: evancheng
Date: Thu May  8 17:35:02 2008
New Revision: 50874

URL: http://llvm.org/viewvc/llvm-project?rev=50874&view=rev
Log:
Use movq to move low half of XMM register and zero-extend the rest.

Added:
    llvm/trunk/test/CodeGen/X86/vec_set-E.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=50874&r1=50873&r2=50874&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86InstrSSE.td (original)
+++ llvm/trunk/lib/Target/X86/X86InstrSSE.td Thu May  8 17:35:02 2008
@@ -2916,7 +2916,8 @@
 def : Pat<(v2f64 (vector_shuffle immAllZerosV_bc, VR128:$src,
            MOVL_shuffle_mask)),
           (MOVZPQILo2PQIrr VR128:$src)>, Requires<[HasSSE2]>;
-
+def : Pat<(v2f64 (X86zvmovl (v2f64 VR128:$src))),
+          (MOVZPQILo2PQIrr VR128:$src)>, Requires<[HasSSE2]>;
 
 // FIXME: Temporary workaround since 2-wide shuffle is broken.
 def : Pat<(int_x86_sse2_movs_d  VR128:$src1, VR128:$src2),

Added: llvm/trunk/test/CodeGen/X86/vec_set-E.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/vec_set-E.ll?rev=50874&view=auto

==============================================================================
--- llvm/trunk/test/CodeGen/X86/vec_set-E.ll (added)
+++ llvm/trunk/test/CodeGen/X86/vec_set-E.ll Thu May  8 17:35:02 2008
@@ -0,0 +1,10 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep movq
+
+define i32 @t(float %X) nounwind  {
+	%tmp11 = insertelement <4 x float> undef, float %X, i32 0
+	%tmp12 = insertelement <4 x float> %tmp11, float %X, i32 1
+	%tmp27 = insertelement <4 x float> %tmp12, float 0.000000e+00, i32 2
+	%tmp28 = insertelement <4 x float> %tmp27, float 0.000000e+00, i32 3
+	store <4 x float> %tmp28, <4 x float>* null, align 16
+	ret i32 0
+}