Avoid crashing on a variable-index insertelement with element type i16.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@72991 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index ec6a5ba..ef60ff5 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -4272,7 +4272,7 @@
SDValue N1 = Op.getOperand(1);
SDValue N2 = Op.getOperand(2);
- if (EVT.getSizeInBits() == 16) {
+ if (EVT.getSizeInBits() == 16 && isa<ConstantSDNode>(N2)) {
// Transform it so it match pinsrw which expects a 16-bit value in a GR32
// as its second argument.
if (N1.getValueType() != MVT::i32)
diff --git a/test/CodeGen/X86/2009-06-05-VariableIndexInsert.ll b/test/CodeGen/X86/2009-06-05-VariableIndexInsert.ll
new file mode 100644
index 0000000..2e3f195
--- /dev/null
+++ b/test/CodeGen/X86/2009-06-05-VariableIndexInsert.ll
@@ -0,0 +1,11 @@
+; RUN: llvm-as < %s | llc
+
+define <2 x i64> @_mm_insert_epi16(<2 x i64> %a, i32 %b, i32 %imm) nounwind readnone {
+entry:
+ %conv = bitcast <2 x i64> %a to <8 x i16> ; <<8 x i16>> [#uses=1]
+ %conv2 = trunc i32 %b to i16 ; <i16> [#uses=1]
+ %and = and i32 %imm, 7 ; <i32> [#uses=1]
+ %vecins = insertelement <8 x i16> %conv, i16 %conv2, i32 %and ; <<8 x i16>> [#uses=1]
+ %conv6 = bitcast <8 x i16> %vecins to <2 x i64> ; <<2 x i64>> [#uses=1]
+ ret <2 x i64> %conv6
+}