Regression is gone, don't try to find it on clean target.

llvm-svn: 33296

1 files changed, 53 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/vec_ins_extract.ll b/llvm/test/CodeGen/X86/vec_ins_extract.ll
new file mode 100644
index 00000000000..b2435063a5e
--- /dev/null
+++ b/llvm/test/CodeGen/X86/vec_ins_extract.ll
@@ -0,0 +1,53 @@
+; RUN: llvm-upgrade < %s | llvm-as | opt -scalarrepl -instcombine | \
+; RUN:   llc -march=x86 -mcpu=yonah &&
+; RUN: llvm-upgrade < %s | llvm-as | opt -scalarrepl -instcombine | \
+; RUN:   llc -march=x86 -mcpu=yonah | not grep sub.*esp
+
+; This checks that various insert/extract idiom work without going to the 
+; stack.
+
+void %test(<4 x float>* %F, float %f) {
+entry:
+	%tmp = load <4 x float>* %F		; <<4 x float>> [#uses=2]
+	%tmp3 = add <4 x float> %tmp, %tmp		; <<4 x float>> [#uses=1]
+	%tmp10 = insertelement <4 x float> %tmp3, float %f, uint 0		; <<4 x float>> [#uses=2]
+	%tmp6 = add <4 x float> %tmp10, %tmp10		; <<4 x float>> [#uses=1]
+	store <4 x float> %tmp6, <4 x float>* %F
+	ret void
+}
+
+void %test2(<4 x float>* %F, float %f) {
+entry:
+	%G = alloca <4 x float>, align 16		; <<4 x float>*> [#uses=3]
+	%tmp = load <4 x float>* %F		; <<4 x float>> [#uses=2]
+	%tmp3 = add <4 x float> %tmp, %tmp		; <<4 x float>> [#uses=1]
+	store <4 x float> %tmp3, <4 x float>* %G
+	%tmp = getelementptr <4 x float>* %G, int 0, int 2		; <float*> [#uses=1]
+	store float %f, float* %tmp
+	%tmp4 = load <4 x float>* %G		; <<4 x float>> [#uses=2]
+	%tmp6 = add <4 x float> %tmp4, %tmp4		; <<4 x float>> [#uses=1]
+	store <4 x float> %tmp6, <4 x float>* %F
+	ret void
+}
+
+void %test3(<4 x float>* %F, float* %f) {
+entry:
+	%G = alloca <4 x float>, align 16		; <<4 x float>*> [#uses=2]
+	%tmp = load <4 x float>* %F		; <<4 x float>> [#uses=2]
+	%tmp3 = add <4 x float> %tmp, %tmp		; <<4 x float>> [#uses=1]
+	store <4 x float> %tmp3, <4 x float>* %G
+	%tmp = getelementptr <4 x float>* %G, int 0, int 2		; <float*> [#uses=1]
+	%tmp = load float* %tmp		; <float> [#uses=1]
+	store float %tmp, float* %f
+	ret void
+}
+
+void %test4(<4 x float>* %F, float* %f) {
+entry:
+	%tmp = load <4 x float>* %F		; <<4 x float>> [#uses=2]
+	%tmp5.lhs = extractelement <4 x float> %tmp, uint 0		; <float> [#uses=1]
+	%tmp5.rhs = extractelement <4 x float> %tmp, uint 0		; <float> [#uses=1]
+	%tmp5 = add float %tmp5.lhs, %tmp5.rhs		; <float> [#uses=1]
+	store float %tmp5, float* %f
+	ret void
+}