Use movlps / movhps to modify low / high half of 16-byet memory location.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51501 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 25 insertions, 0 deletions

diff --git a/test/CodeGen/X86/vec_shuffle-18.ll b/test/CodeGen/X86/vec_shuffle-18.ll
new file mode 100644
index 0000000..5e05690
--- /dev/null
+++ b/test/CodeGen/X86/vec_shuffle-18.ll
@@ -0,0 +1,25 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 | grep mov | count 7
+
+	%struct.vector4_t = type { <4 x float> }
+
+define void @swizzle(i8* %a, %struct.vector4_t* %b, %struct.vector4_t* %c) nounwind  {
+entry:
+	%tmp9 = getelementptr %struct.vector4_t* %b, i32 0, i32 0		; <<4 x float>*> [#uses=2]
+	%tmp10 = load <4 x float>* %tmp9, align 16		; <<4 x float>> [#uses=1]
+	%tmp14 = bitcast i8* %a to double*		; <double*> [#uses=1]
+	%tmp15 = load double* %tmp14		; <double> [#uses=1]
+	%tmp16 = insertelement <2 x double> undef, double %tmp15, i32 0		; <<2 x double>> [#uses=1]
+	%tmp18 = bitcast <2 x double> %tmp16 to <4 x float>		; <<4 x float>> [#uses=1]
+	%tmp19 = shufflevector <4 x float> %tmp10, <4 x float> %tmp18, <4 x i32> < i32 4, i32 5, i32 2, i32 3 >		; <<4 x float>> [#uses=1]
+	store <4 x float> %tmp19, <4 x float>* %tmp9, align 16
+	%tmp28 = getelementptr %struct.vector4_t* %c, i32 0, i32 0		; <<4 x float>*> [#uses=2]
+	%tmp29 = load <4 x float>* %tmp28, align 16		; <<4 x float>> [#uses=1]
+	%tmp26 = getelementptr i8* %a, i32 8		; <i8*> [#uses=1]
+	%tmp33 = bitcast i8* %tmp26 to double*		; <double*> [#uses=1]
+	%tmp34 = load double* %tmp33		; <double> [#uses=1]
+	%tmp35 = insertelement <2 x double> undef, double %tmp34, i32 0		; <<2 x double>> [#uses=1]
+	%tmp37 = bitcast <2 x double> %tmp35 to <4 x float>		; <<4 x float>> [#uses=1]
+	%tmp38 = shufflevector <4 x float> %tmp29, <4 x float> %tmp37, <4 x i32> < i32 4, i32 5, i32 2, i32 3 >		; <<4 x float>> [#uses=1]
+	store <4 x float> %tmp38, <4 x float>* %tmp28, align 16
+	ret void
+}