new testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30751 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/InstCombine/vec_demanded_elts.ll b/test/Transforms/InstCombine/vec_demanded_elts.ll
new file mode 100644 (file)
index 0000000..3da22e7
--- /dev/null
+++ b/test/Transforms/InstCombine/vec_demanded_elts.ll
@@ -0,0 +1,30 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep 'sub float' &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep 'mul float' &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'insertelement.*0.00' &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'call.*llvm.x86.sse.mul' &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep 'call.*llvm.x86.sse.sub'
+
+ushort %Convert_sse(float %f) {
+entry:
+       %tmp = insertelement <4 x float> undef, float %f, uint 0                ; <<4 x float>> [#uses=1]
+       %tmp10 = insertelement <4 x float> %tmp, float 0.000000e+00, uint 1             ; <<4 x float>> [#uses=1]
+       %tmp11 = insertelement <4 x float> %tmp10, float 0.000000e+00, uint 2           ; <<4 x float>> [#uses=1]
+       %tmp12 = insertelement <4 x float> %tmp11, float 0.000000e+00, uint 3           ; <<4 x float>> [#uses=1]
+       %tmp28 = tail call <4 x float> %llvm.x86.sse.sub.ss( <4 x float> %tmp12, <4 x float> < float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > )               ; <<4 x float>> [#uses=1]
+       %tmp37 = tail call <4 x float> %llvm.x86.sse.mul.ss( <4 x float> %tmp28, <4 x float> < float 5.000000e-01, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > )               ; <<4 x float>> [#uses=1]
+       %tmp48 = tail call <4 x float> %llvm.x86.sse.min.ss( <4 x float> %tmp37, <4 x float> < float 6.553500e+04, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > )               ; <<4 x float>> [#uses=1]
+       %tmp59 = tail call <4 x float> %llvm.x86.sse.max.ss( <4 x float> %tmp48, <4 x float> zeroinitializer )          ; <<4 x float>> [#uses=1]
+       %tmp = tail call int %llvm.x86.sse.cvttss2si( <4 x float> %tmp59 )              ; <int> [#uses=1]
+       %tmp69 = cast int %tmp to ushort                ; <ushort> [#uses=1]
+       ret ushort %tmp69
+}
+
+declare <4 x float> %llvm.x86.sse.sub.ss(<4 x float>, <4 x float>)
+
+declare <4 x float> %llvm.x86.sse.mul.ss(<4 x float>, <4 x float>)
+
+declare <4 x float> %llvm.x86.sse.min.ss(<4 x float>, <4 x float>)
+
+declare <4 x float> %llvm.x86.sse.max.ss(<4 x float>, <4 x float>)
+
+declare int %llvm.x86.sse.cvttss2si(<4 x float>)