1 files changed, 34 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/2009-09-20-LiveIntervalsBug.ll b/test/CodeGen/ARM/2009-09-20-LiveIntervalsBug.ll
new file mode 100644
index 0000000..980f8ce
--- /dev/null
+++ b/test/CodeGen/ARM/2009-09-20-LiveIntervalsBug.ll
@@ -0,0 +1,34 @@
+; RUN: llc < %s -mtriple=arm-eabi -mattr=+neon -mcpu=cortex-a9
+
+; PR4986
+
+define arm_aapcs_vfpcc void @foo(i8* nocapture %pBuffer, i32 %numItems) nounwind {
+entry:
+  br i1 undef, label %return, label %bb.preheader
+
+bb.preheader:                                     ; preds = %entry
+  br label %bb
+
+bb:                                               ; preds = %bb, %bb.preheader
+  %0 = shufflevector <4 x float> zeroinitializer, <4 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1]
+  %1 = insertelement <4 x float> %0, float undef, i32 1 ; <<4 x float>> [#uses=1]
+  %2 = insertelement <4 x float> %1, float undef, i32 2 ; <<4 x float>> [#uses=1]
+  %3 = insertelement <4 x float> %2, float undef, i32 3 ; <<4 x float>> [#uses=1]
+  %4 = fmul <4 x float> undef, %3                 ; <<4 x float>> [#uses=1]
+  %5 = extractelement <4 x float> %4, i32 3       ; <float> [#uses=1]
+  store float %5, float* undef, align 4
+  br i1 undef, label %return, label %bb
+
+return:                                           ; preds = %bb, %entry
+  ret void
+}
+
+define arm_aapcs_vfpcc <4 x float> @bar(i8* nocapture %pBuffer, i32 %numItems) nounwind {
+  %1 = shufflevector <4 x float> zeroinitializer, <4 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>> [#uses=1]
+  %2 = insertelement <4 x float> %1, float undef, i32 1 ; <<4 x float>> [#uses=1]
+  %3 = insertelement <4 x float> %2, float undef, i32 2 ; <<4 x float>> [#uses=1]
+  %4 = insertelement <4 x float> %3, float undef, i32 3 ; <<4 x float>> [#uses=1]
+  %5 = shufflevector <4 x float> %4, <4 x float> undef, <2 x i32> <i32 0, i32 1> ; <<2 x float>> [#uses=1]
+  %6 = shufflevector <2 x float> %5, <2 x float> undef, <4 x i32> <i32 1, i32 1, i32 1, i32 1> ; <<4 x float>> [#uses=1]
+  ret <4 x float> %6
+}