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Added a ValueType operand to isShuffleMaskLegal(). For now, x86 will not do 

64-bit vector shuffle.

llvm-svn: 26964
This commit is contained in:
Evan Cheng 2006-03-22 22:07:06 +00:00
parent 8e4c9ff3dc
commit 021bb7c956
3 changed files with 7 additions and 4 deletions
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4
llvm/include/llvm/Target/TargetLowering.h
View File

@ -202,7 +202,7 @@ public:
/// support and the code generator is tasked with not creating illegal masks.
bool isShuffleLegal(MVT::ValueType VT, SDOperand Mask) const {
return isOperationLegal(ISD::VECTOR_SHUFFLE, VT) &&
isShuffleMaskLegal(Mask);
isShuffleMaskLegal(Mask, VT);
}
/// getTypeToPromoteTo - If the action for this operation is to promote, this
@ -489,7 +489,7 @@ protected:
/// support *some* VECTOR_SHUFFLE operations, those with specific masks.
/// By default, if a target supports the VECTOR_SHUFFLE node, all mask values
/// are assumed to be legal.
virtual bool isShuffleMaskLegal(SDOperand Mask) const {
virtual bool isShuffleMaskLegal(SDOperand Mask, MVT::ValueType VT) const {
return true;
}

5
llvm/lib/Target/X86/X86ISelLowering.cpp
View File

@ -2371,7 +2371,10 @@ bool X86TargetLowering::isLegalAddressImmediate(GlobalValue *GV) const {
/// support *some* VECTOR_SHUFFLE operations, those with specific masks.
/// By default, if a target supports the VECTOR_SHUFFLE node, all mask values
/// are assumed to be legal.
bool X86TargetLowering::isShuffleMaskLegal(SDOperand Mask) const {
bool
X86TargetLowering::isShuffleMaskLegal(SDOperand Mask, MVT::ValueType VT) const {
// Only do shuffles on 128-bit vector types for now.
if (MVT::getSizeInBits(VT) == 64) return false;
return (X86::isSplatMask(Mask.Val) ||
(Subtarget->hasSSE2() && X86::isPSHUFDMask(Mask.Val)));
}

2
llvm/lib/Target/X86/X86ISelLowering.h
View File

@ -267,7 +267,7 @@ namespace llvm {
/// support *some* VECTOR_SHUFFLE operations, those with specific masks.
/// By default, if a target supports the VECTOR_SHUFFLE node, all mask values
/// are assumed to be legal.
virtual bool isShuffleMaskLegal(SDOperand Mask) const;
virtual bool isShuffleMaskLegal(SDOperand Mask, MVT::ValueType VT) const;
private:
// C Calling Convention implementation.
std::vector<SDOperand> LowerCCCArguments(Function &F, SelectionDAG &DAG);