Make these predicates return true for bit_convert(buildvector)'s as well as

buildvectors.

llvm-svn: 27723

1 files changed, 8 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index bcdbef17ec4..75281d5a85d 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -73,6 +73,10 @@ bool ConstantFPSDNode::isExactlyValue(double V) const {
 /// isBuildVectorAllOnes - Return true if the specified node is a
 /// BUILD_VECTOR where all of the elements are ~0 or undef.
 bool ISD::isBuildVectorAllOnes(const SDNode *N) {
+  // Look through a bit convert.
+  if (N->getOpcode() == ISD::BIT_CONVERT)
+    N = N->getOperand(0).Val;
+  
   if (N->getOpcode() != ISD::BUILD_VECTOR) return false;
   
   unsigned i = 0, e = N->getNumOperands();
@@ -117,6 +121,10 @@ bool ISD::isBuildVectorAllOnes(const SDNode *N) {
 /// isBuildVectorAllZeros - Return true if the specified node is a
 /// BUILD_VECTOR where all of the elements are 0 or undef.
 bool ISD::isBuildVectorAllZeros(const SDNode *N) {
+  // Look through a bit convert.
+  if (N->getOpcode() == ISD::BIT_CONVERT)
+    N = N->getOperand(0).Val;
+  
   if (N->getOpcode() != ISD::BUILD_VECTOR) return false;
   
   unsigned i = 0, e = N->getNumOperands();