diff options
Diffstat (limited to 'lib/Target/Mips/MipsDelaySlotFiller.cpp')
| -rw-r--r-- | lib/Target/Mips/MipsDelaySlotFiller.cpp | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/lib/Target/Mips/MipsDelaySlotFiller.cpp b/lib/Target/Mips/MipsDelaySlotFiller.cpp index 2bba8a3..e3c8ed7 100644 --- a/lib/Target/Mips/MipsDelaySlotFiller.cpp +++ b/lib/Target/Mips/MipsDelaySlotFiller.cpp @@ -30,10 +30,11 @@ STATISTIC(FilledSlots, "Number of delay slots filled"); STATISTIC(UsefulSlots, "Number of delay slots filled with instructions that" " are not NOP."); -static cl::opt<bool> EnableDelaySlotFiller( - "enable-mips-delay-filler", +static cl::opt<bool> DisableDelaySlotFiller( + "disable-mips-delay-filler", cl::init(false), - cl::desc("Fill the Mips delay slots useful instructions."), + cl::desc("Disable the delay slot filler, which attempts to fill the Mips" + "delay slots with useful instructions."), cl::Hidden); // This option can be used to silence complaints by machine verifier passes. @@ -114,7 +115,9 @@ runOnMachineBasicBlock(MachineBasicBlock &MBB) { InstrIter D; - if (EnableDelaySlotFiller && findDelayInstr(MBB, I, D)) { + // Delay slot filling is disabled at -O0. + if (!DisableDelaySlotFiller && (TM.getOptLevel() != CodeGenOpt::None) && + findDelayInstr(MBB, I, D)) { MBB.splice(llvm::next(I), &MBB, D); ++UsefulSlots; } else |
