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author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-07 18:56:39 +0000 |
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committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2012-08-07 18:56:39 +0000 |
commit | 0b40d09ff6b1facd0fe81e50ee0271e035488520 (patch) | |
tree | e06afd5cc736d56abdc1de1c9dfed13e913a11c3 /include | |
parent | ea708d1071898bd8fda58f9d58d1d3fe38faf9f2 (diff) | |
download | external_llvm-0b40d09ff6b1facd0fe81e50ee0271e035488520.zip external_llvm-0b40d09ff6b1facd0fe81e50ee0271e035488520.tar.gz external_llvm-0b40d09ff6b1facd0fe81e50ee0271e035488520.tar.bz2 |
Add a new kind of MachineOperand: MO_TargetIndex.
A target index operand looks a lot like a constant pool reference, but
it is completely target-defined. It contains the 8-bit TargetFlags, a
32-bit index, and a 64-bit offset. It is preserved by all code generator
passes.
TargetIndex operands can be used to carry target-specific information in
cases where immediate operands won't suffice.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161441 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include')
-rw-r--r-- | include/llvm/CodeGen/MachineInstrBuilder.h | 6 | ||||
-rw-r--r-- | include/llvm/CodeGen/MachineOperand.h | 23 |
2 files changed, 23 insertions, 6 deletions
diff --git a/include/llvm/CodeGen/MachineInstrBuilder.h b/include/llvm/CodeGen/MachineInstrBuilder.h index 9192474..654361f 100644 --- a/include/llvm/CodeGen/MachineInstrBuilder.h +++ b/include/llvm/CodeGen/MachineInstrBuilder.h @@ -108,6 +108,12 @@ public: return *this; } + const MachineInstrBuilder &addTargetIndex(unsigned Idx, int64_t Offset = 0, + unsigned char TargetFlags = 0) const { + MI->addOperand(MachineOperand::CreateTargetIndex(Idx, Offset, TargetFlags)); + return *this; + } + const MachineInstrBuilder &addJumpTableIndex(unsigned Idx, unsigned char TargetFlags = 0) const { MI->addOperand(MachineOperand::CreateJTI(Idx, TargetFlags)); diff --git a/include/llvm/CodeGen/MachineOperand.h b/include/llvm/CodeGen/MachineOperand.h index 5b5790f..c08b22d 100644 --- a/include/llvm/CodeGen/MachineOperand.h +++ b/include/llvm/CodeGen/MachineOperand.h @@ -45,6 +45,7 @@ public: MO_MachineBasicBlock, ///< MachineBasicBlock reference MO_FrameIndex, ///< Abstract Stack Frame Index MO_ConstantPoolIndex, ///< Address of indexed Constant in Constant Pool + MO_TargetIndex, ///< Target-dependent index+offset operand. MO_JumpTableIndex, ///< Address of indexed Jump Table for switch MO_ExternalSymbol, ///< Name of external global symbol MO_GlobalAddress, ///< Address of a global value @@ -215,6 +216,8 @@ public: bool isFI() const { return OpKind == MO_FrameIndex; } /// isCPI - Tests if this is a MO_ConstantPoolIndex operand. bool isCPI() const { return OpKind == MO_ConstantPoolIndex; } + /// isTargetIndex - Tests if this is a MO_TargetIndex operand. + bool isTargetIndex() const { return OpKind == MO_TargetIndex; } /// isJTI - Tests if this is a MO_JumpTableIndex operand. bool isJTI() const { return OpKind == MO_JumpTableIndex; } /// isGlobal - Tests if this is a MO_GlobalAddress operand. @@ -410,7 +413,7 @@ public: } int getIndex() const { - assert((isFI() || isCPI() || isJTI()) && + assert((isFI() || isCPI() || isTargetIndex() || isJTI()) && "Wrong MachineOperand accessor"); return Contents.OffsetedInfo.Val.Index; } @@ -433,8 +436,8 @@ public: /// getOffset - Return the offset from the symbol in this operand. This always /// returns 0 for ExternalSymbol operands. int64_t getOffset() const { - assert((isGlobal() || isSymbol() || isCPI() || isBlockAddress()) && - "Wrong MachineOperand accessor"); + assert((isGlobal() || isSymbol() || isCPI() || isTargetIndex() || + isBlockAddress()) && "Wrong MachineOperand accessor"); return (int64_t(Contents.OffsetedInfo.OffsetHi) << 32) | SmallContents.OffsetLo; } @@ -481,14 +484,14 @@ public: } void setOffset(int64_t Offset) { - assert((isGlobal() || isSymbol() || isCPI() || isBlockAddress()) && - "Wrong MachineOperand accessor"); + assert((isGlobal() || isSymbol() || isCPI() || isTargetIndex() || + isBlockAddress()) && "Wrong MachineOperand accessor"); SmallContents.OffsetLo = unsigned(Offset); Contents.OffsetedInfo.OffsetHi = int(Offset >> 32); } void setIndex(int Idx) { - assert((isFI() || isCPI() || isJTI()) && + assert((isFI() || isCPI() || isTargetIndex() || isJTI()) && "Wrong MachineOperand accessor"); Contents.OffsetedInfo.Val.Index = Idx; } @@ -589,6 +592,14 @@ public: Op.setTargetFlags(TargetFlags); return Op; } + static MachineOperand CreateTargetIndex(unsigned Idx, int64_t Offset, + unsigned char TargetFlags = 0) { + MachineOperand Op(MachineOperand::MO_TargetIndex); + Op.setIndex(Idx); + Op.setOffset(Offset); + Op.setTargetFlags(TargetFlags); + return Op; + } static MachineOperand CreateJTI(unsigned Idx, unsigned char TargetFlags = 0) { MachineOperand Op(MachineOperand::MO_JumpTableIndex); |