new testcase, not currently working.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28786 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/vec_ins_extract.ll b/test/CodeGen/X86/vec_ins_extract.ll
new file mode 100644 (file)
index 0000000..08fb893
--- /dev/null
+++ b/test/CodeGen/X86/vec_ins_extract.ll
@@ -0,0 +1,52 @@
+; RUN: llvm-as< %s | llc -march=x86 -mcpu=yonah &&
+; RUN: llvm-as< %s | llc -march=x86 -mcpu=yonah | not grep sub.*esp
+
+; This checks that various insert/extract idiom work without going to the 
+; stack.
+; XFAIL: *
+
+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
+}