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| author | Evan Cheng <evan.cheng@apple.com> | 2010-06-02 01:08:27 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2010-06-02 01:08:27 +0000 |
| commit | a2da22734fb4ece66c664df1141eec51981390d0 (patch) | |
| tree | cf384fbc0acfdaf6fabb3117e9f88359944ed151 /llvm/lib/CodeGen | |
| parent | 469bb2be2cbad03756a7ad8bab16a55a80f9ae55 (diff) | |
| download | bcm5719-llvm-a2da22734fb4ece66c664df1141eec51981390d0.tar.gz bcm5719-llvm-a2da22734fb4ece66c664df1141eec51981390d0.zip | |
Enable machine cse of instructions which define physical registers.
llvm-svn: 105308
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/MachineCSE.cpp | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/llvm/lib/CodeGen/MachineCSE.cpp b/llvm/lib/CodeGen/MachineCSE.cpp index 6f4f7a88340..d8e2ec64da8 100644 --- a/llvm/lib/CodeGen/MachineCSE.cpp +++ b/llvm/lib/CodeGen/MachineCSE.cpp @@ -31,9 +31,6 @@ using namespace llvm; STATISTIC(NumCoalesces, "Number of copies coalesced"); STATISTIC(NumCSEs, "Number of common subexpression eliminated"); -static cl::opt<bool> CSEPhysDef("machine-cse-phys-defs", - cl::init(false), cl::Hidden); - namespace { class MachineCSE : public MachineFunctionPass { const TargetInstrInfo *TII; @@ -376,7 +373,7 @@ bool MachineCSE::ProcessBlock(MachineBasicBlock *MBB) { // ... Unless the CS is local and it also defines the physical register // which is not clobbered in between. - if (PhysDef && CSEPhysDef) { + if (PhysDef) { unsigned CSVN = VNT.lookup(MI); MachineInstr *CSMI = Exps[CSVN]; if (PhysRegDefReaches(CSMI, MI, PhysDef)) |
