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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 | 9d709a8edb696e89b33cd3c2886c8db735b02318 (patch) | |
| tree | e3ca2e1172abd7fb5437256268bc7a7573df2439 /lib/CodeGen/MachineCSE.cpp | |
| parent | 22237771d813a2d7282fa1cdc411c2a09a71a81c (diff) | |
| download | llvm-9d709a8edb696e89b33cd3c2886c8db735b02318.tar.gz llvm-9d709a8edb696e89b33cd3c2886c8db735b02318.tar.bz2 llvm-9d709a8edb696e89b33cd3c2886c8db735b02318.tar.xz | |
Enable machine cse of instructions which define physical registers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105308 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/MachineCSE.cpp')
| -rw-r--r-- | lib/CodeGen/MachineCSE.cpp | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp index 6f4f7a8834..d8e2ec64da 100644 --- a/lib/CodeGen/MachineCSE.cpp +++ b/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)) |