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Liveness Analysis Pass

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@197254 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2013-12-13 18:37:03 +00:00
parent edf1070ca7
commit 539e93120c
17 changed files with 514 additions and 78 deletions
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17
include/llvm/CodeGen/MachineOperand.h
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@ -56,6 +56,7 @@ public:
MO_GlobalAddress, ///< Address of a global value
MO_BlockAddress, ///< Address of a basic block
MO_RegisterMask, ///< Mask of preserved registers.
MO_RegisterLiveOut, ///< Mask of live-out registers.
MO_Metadata, ///< Metadata reference (for debug info)
MO_MCSymbol ///< MCSymbol reference (for debug/eh info)
};
@ -153,7 +154,7 @@ private:
const ConstantFP *CFP; // For MO_FPImmediate.
const ConstantInt *CI; // For MO_CImmediate. Integers > 64bit.
int64_t ImmVal; // For MO_Immediate.
const uint32_t *RegMask; // For MO_RegisterMask.
const uint32_t *RegMask; // For MO_RegisterMask and MO_RegisterLiveOut.
const MDNode *MD; // For MO_Metadata.
MCSymbol *Sym; // For MO_MCSymbol
@ -246,6 +247,8 @@ public:
bool isBlockAddress() const { return OpKind == MO_BlockAddress; }
/// isRegMask - Tests if this is a MO_RegisterMask operand.
bool isRegMask() const { return OpKind == MO_RegisterMask; }
/// isRegLiveOut - Tests if this is a MO_RegisterLiveOut operand.
bool isRegLiveOut() const { return OpKind == MO_RegisterLiveOut; }
/// isMetadata - Tests if this is a MO_Metadata operand.
bool isMetadata() const { return OpKind == MO_Metadata; }
bool isMCSymbol() const { return OpKind == MO_MCSymbol; }
@ -476,6 +479,12 @@ public:
return Contents.RegMask;
}
/// getRegLiveOut - Returns a bit mask of live-out registers.
const uint32_t *getRegLiveOut() const {
assert(isRegLiveOut() && "Wrong MachineOperand accessor");
return Contents.RegMask;
}
const MDNode *getMetadata() const {
assert(isMetadata() && "Wrong MachineOperand accessor");
return Contents.MD;
@ -659,6 +668,12 @@ public:
Op.Contents.RegMask = Mask;
return Op;
}
static MachineOperand CreateRegLiveOut(const uint32_t *Mask) {
assert(Mask && "Missing live-out register mask");
MachineOperand Op(MachineOperand::MO_RegisterLiveOut);
Op.Contents.RegMask = Mask;
return Op;
}
static MachineOperand CreateMetadata(const MDNode *Meta) {
MachineOperand Op(MachineOperand::MO_Metadata);
Op.Contents.MD = Meta;