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author | Lang Hames <lhames@gmail.com> | 2009-09-04 20:41:11 +0000 |
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committer | Lang Hames <lhames@gmail.com> | 2009-09-04 20:41:11 +0000 |
commit | 8651125d2885f74546b6e2a556082111d5b75da3 (patch) | |
tree | 4d6c1e4cb918fb86cc7f2acc370171b110123cf6 /lib/CodeGen/VirtRegMap.h | |
parent | 5684229a4583355a6b20a950614731c1a6d38f88 (diff) | |
download | external_llvm-8651125d2885f74546b6e2a556082111d5b75da3.zip external_llvm-8651125d2885f74546b6e2a556082111d5b75da3.tar.gz external_llvm-8651125d2885f74546b6e2a556082111d5b75da3.tar.bz2 |
Replaces uses of unsigned for indexes in LiveInterval and VNInfo with
a new class, MachineInstrIndex, which hides arithmetic details from
most clients. This is a step towards allowing the register allocator
to update/insert code during allocation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81040 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/VirtRegMap.h')
-rw-r--r-- | lib/CodeGen/VirtRegMap.h | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/CodeGen/VirtRegMap.h b/lib/CodeGen/VirtRegMap.h index 482ba1b..ca174d5 100644 --- a/lib/CodeGen/VirtRegMap.h +++ b/lib/CodeGen/VirtRegMap.h @@ -18,6 +18,7 @@ #define LLVM_CODEGEN_VIRTREGMAP_H #include "llvm/CodeGen/MachineFunctionPass.h" +#include "llvm/CodeGen/LiveInterval.h" #include "llvm/Target/TargetRegisterInfo.h" #include "llvm/ADT/BitVector.h" #include "llvm/ADT/DenseMap.h" @@ -79,7 +80,7 @@ namespace llvm { /// Virt2SplitKillMap - This is splitted virtual register to its last use /// (kill) index mapping. - IndexedMap<unsigned> Virt2SplitKillMap; + IndexedMap<MachineInstrIndex> Virt2SplitKillMap; /// ReMatMap - This is virtual register to re-materialized instruction /// mapping. Each virtual register whose definition is going to be @@ -141,7 +142,7 @@ namespace llvm { VirtRegMap() : MachineFunctionPass(&ID), Virt2PhysMap(NO_PHYS_REG), Virt2StackSlotMap(NO_STACK_SLOT), Virt2ReMatIdMap(NO_STACK_SLOT), Virt2SplitMap(0), - Virt2SplitKillMap(0), ReMatMap(NULL), + Virt2SplitKillMap(MachineInstrIndex()), ReMatMap(NULL), ReMatId(MAX_STACK_SLOT+1), LowSpillSlot(NO_STACK_SLOT), HighSpillSlot(NO_STACK_SLOT) { } virtual bool runOnMachineFunction(MachineFunction &MF); @@ -265,17 +266,17 @@ namespace llvm { } /// @brief record the last use (kill) of a split virtual register. - void addKillPoint(unsigned virtReg, unsigned index) { + void addKillPoint(unsigned virtReg, MachineInstrIndex index) { Virt2SplitKillMap[virtReg] = index; } - unsigned getKillPoint(unsigned virtReg) const { + MachineInstrIndex getKillPoint(unsigned virtReg) const { return Virt2SplitKillMap[virtReg]; } /// @brief remove the last use (kill) of a split virtual register. void removeKillPoint(unsigned virtReg) { - Virt2SplitKillMap[virtReg] = 0; + Virt2SplitKillMap[virtReg] = MachineInstrIndex(); } /// @brief returns true if the specified MachineInstr is a spill point. |