Fixed PR13938: the ARM backend was crashing because it couldn't select a VDUPLANE node with the vector input size different from the output size. This was bacause the BUILD_VECTOR lowering code didn't check that the size of the input vector was correct for using VDUPLANE.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165929 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 36 insertions, 0 deletions

diff --git a/test/CodeGen/ARM/vdup.ll b/test/CodeGen/ARM/vdup.ll
index a8c224b438..2cf94d63ca 100644
--- a/test/CodeGen/ARM/vdup.ll
+++ b/test/CodeGen/ARM/vdup.ll
@@ -295,3 +295,39 @@ define <4 x i32> @tduplane(<4 x i32> %invec) {
   %4 = insertelement <4 x i32> %3, i32 255, i32 3
   ret <4 x i32> %4
 }
+
+define <2 x float> @check_f32(<4 x float> %v) nounwind {
+;CHECK: check_f32:
+;CHECK: vdup.32 {{.*}}, d{{..}}[1]
+  %x = extractelement <4 x float> %v, i32 3
+  %1 = insertelement  <2 x float> undef, float %x, i32 0
+  %2 = insertelement  <2 x float> %1, float %x, i32 1
+  ret <2 x float> %2
+}
+
+define <2 x i32> @check_i32(<4 x i32> %v) nounwind {
+;CHECK: check_i32:
+;CHECK: vdup.32 {{.*}}, d{{..}}[1]
+  %x = extractelement <4 x i32> %v, i32 3
+  %1 = insertelement  <2 x i32> undef, i32 %x, i32 0
+  %2 = insertelement  <2 x i32> %1, i32 %x, i32 1
+  ret <2 x i32> %2
+}
+
+define <4 x i16> @check_i16(<8 x i16> %v) nounwind {
+;CHECK: check_i16:
+;CHECK: vdup.16 {{.*}}, d{{..}}[3]
+  %x = extractelement <8 x i16> %v, i32 3
+  %1 = insertelement  <4 x i16> undef, i16 %x, i32 0
+  %2 = insertelement  <4 x i16> %1, i16 %x, i32 1
+  ret <4 x i16> %2
+}
+
+define <8 x i8> @check_i8(<16 x i8> %v) nounwind {
+;CHECK: check_i8:
+;CHECK: vdup.8 {{.*}}, d{{..}}[3]
+  %x = extractelement <16 x i8> %v, i32 3
+  %1 = insertelement  <8  x i8> undef, i8 %x, i32 0
+  %2 = insertelement  <8  x i8> %1, i8 %x, i32 1
+  ret <8 x i8> %2
+}