Changes in directory llvm/include/llvm/Target:
TargetLowering.h updated: 1.61 -> 1.62
---
Log message:
Add some helper methods
---
Diffs of the changes: (+17 -0)
TargetLowering.h | 17 +++++++++++++++++
1 files changed, 17 insertions(+)
Index: llvm/include/llvm/Target/TargetLowering.h
diff -u llvm/include/llvm/Target/TargetLowering.h:1.61
llvm/include/llvm/Target/TargetLowering.h:1.62
--- llvm/include/llvm/Target/TargetLowering.h:1.61 Thu Mar 16 15:47:42 2006
+++ llvm/include/llvm/Target/TargetLowering.h Sun Mar 19 18:55:52 2006
@@ -195,6 +195,15 @@
return getOperationAction(Op, VT) == Legal ||
getOperationAction(Op, VT) == Custom;
}
+
+
+ /// isVectorShuffleLegal - Return true if a vector shuffle is legal with the
+ /// specified mask and type. Targets can specify exactly which masks they
+ /// 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);
+ }
/// getTypeToPromoteTo - If the action for this operation is to promote, this
/// method returns the ValueType to promote to.
@@ -476,6 +485,14 @@
TargetDAGCombineArray[NT >> 3] |= 1 << (NT&7);
}
+ /// isShuffleMaskLegal - Targets can use this to indicate that they only
+ /// 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 {
+ return true;
+ }
+
public:
//===--------------------------------------------------------------------===//
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