Special case handling two wide build_vector(0, x).
llvm-svn: 27961
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 1a11c32..a03c92a 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -3236,10 +3236,6 @@
MVT::ValueType EVT = MVT::getVectorBaseType(VT);
unsigned EVTBits = MVT::getSizeInBits(EVT);
- // Let legalizer expand 2-widde build_vector's.
- if (EVTBits == 64)
- return SDOperand();
-
unsigned NumElems = Op.getNumOperands();
unsigned NumZero = 0;
unsigned NumNonZero = 0;
@@ -3291,6 +3287,10 @@
}
}
+ // Let legalizer expand 2-widde build_vector's.
+ if (EVTBits == 64)
+ return SDOperand();
+
// If element VT is < 32 bits, convert it to inserts into a zero vector.
if (EVTBits == 8) {
SDOperand V = LowerBuildVectorv16i8(Op, NonZeros,NumNonZero,NumZero, DAG);