[llvm] r205649 - Add DAG parameter to ComputeNumSignBitsForTargetNode
Matt Arsenault
Matthew.Arsenault at amd.com
Fri Apr 4 13:13:13 PDT 2014
Author: arsenm
Date: Fri Apr 4 15:13:13 2014
New Revision: 205649
URL: http://llvm.org/viewvc/llvm-project?rev=205649&view=rev
Log:
Add DAG parameter to ComputeNumSignBitsForTargetNode
This way, you can check the number of sign bits in the
operands. The depth parameter it already has is pretty useless
without this.
Modified:
llvm/trunk/include/llvm/Target/TargetLowering.h
llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
llvm/trunk/lib/Target/X86/X86ISelLowering.h
Modified: llvm/trunk/include/llvm/Target/TargetLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetLowering.h?rev=205649&r1=205648&r2=205649&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Target/TargetLowering.h (original)
+++ llvm/trunk/include/llvm/Target/TargetLowering.h Fri Apr 4 15:13:13 2014
@@ -1905,6 +1905,7 @@ public:
/// This method can be implemented by targets that want to expose additional
/// information about sign bits to the DAG Combiner.
virtual unsigned ComputeNumSignBitsForTargetNode(SDValue Op,
+ const SelectionDAG &DAG,
unsigned Depth = 0) const;
struct DAGCombinerInfo {
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp?rev=205649&r1=205648&r2=205649&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAG.cpp Fri Apr 4 15:13:13 2014
@@ -2422,7 +2422,7 @@ unsigned SelectionDAG::ComputeNumSignBit
Op.getOpcode() == ISD::INTRINSIC_WO_CHAIN ||
Op.getOpcode() == ISD::INTRINSIC_W_CHAIN ||
Op.getOpcode() == ISD::INTRINSIC_VOID) {
- unsigned NumBits = TLI->ComputeNumSignBitsForTargetNode(Op, Depth);
+ unsigned NumBits = TLI->ComputeNumSignBitsForTargetNode(Op, *this, Depth);
if (NumBits > 1) FirstAnswer = std::max(FirstAnswer, NumBits);
}
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp?rev=205649&r1=205648&r2=205649&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/TargetLowering.cpp Fri Apr 4 15:13:13 2014
@@ -1074,6 +1074,7 @@ void TargetLowering::computeMaskedBitsFo
/// targets that want to expose additional information about sign bits to the
/// DAG Combiner.
unsigned TargetLowering::ComputeNumSignBitsForTargetNode(SDValue Op,
+ const SelectionDAG &,
unsigned Depth) const {
assert((Op.getOpcode() >= ISD::BUILTIN_OP_END ||
Op.getOpcode() == ISD::INTRINSIC_WO_CHAIN ||
Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=205649&r1=205648&r2=205649&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Fri Apr 4 15:13:13 2014
@@ -16576,8 +16576,10 @@ void X86TargetLowering::computeMaskedBit
}
}
-unsigned X86TargetLowering::ComputeNumSignBitsForTargetNode(SDValue Op,
- unsigned Depth) const {
+unsigned X86TargetLowering::ComputeNumSignBitsForTargetNode(
+ SDValue Op,
+ const SelectionDAG &,
+ unsigned Depth) const {
// SETCC_CARRY sets the dest to ~0 for true or 0 for false.
if (Op.getOpcode() == X86ISD::SETCC_CARRY)
return Op.getValueType().getScalarType().getSizeInBits();
Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.h?rev=205649&r1=205648&r2=205649&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.h (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.h Fri Apr 4 15:13:13 2014
@@ -626,6 +626,7 @@ namespace llvm {
// ComputeNumSignBitsForTargetNode - Determine the number of bits in the
// operation that are sign bits.
unsigned ComputeNumSignBitsForTargetNode(SDValue Op,
+ const SelectionDAG &DAG,
unsigned Depth) const override;
bool isGAPlusOffset(SDNode *N, const GlobalValue* &GA,
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