diff options
Diffstat (limited to 'lib/CodeGen/LLVMTargetMachine.cpp')
| -rw-r--r-- | lib/CodeGen/LLVMTargetMachine.cpp | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp index d7fc615e46..a54a08bece 100644 --- a/lib/CodeGen/LLVMTargetMachine.cpp +++ b/lib/CodeGen/LLVMTargetMachine.cpp @@ -57,8 +57,12 @@ static cl::opt<bool> DisableCodePlace("disable-code-place", cl::Hidden, cl::desc("Disable code placement")); static cl::opt<bool> DisableSSC("disable-ssc", cl::Hidden, cl::desc("Disable Stack Slot Coloring")); +static cl::opt<bool> DisableMachineDCE("disable-machine-dce", cl::Hidden, + cl::desc("Disable Machine Dead Code Elimination")); static cl::opt<bool> DisableMachineLICM("disable-machine-licm", cl::Hidden, cl::desc("Disable Machine LICM")); +static cl::opt<bool> DisableMachineCSE("disable-machine-cse", cl::Hidden, + cl::desc("Disable Machine Common Subexpression Elimination")); static cl::opt<bool> DisablePostRAMachineLICM("disable-postra-machine-licm", cl::Hidden, cl::desc("Disable Machine LICM")); @@ -398,12 +402,14 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM, // there is one known exception: lowered code for arguments that are only // used by tail calls, where the tail calls reuse the incoming stack // arguments directly (see t11 in test/CodeGen/X86/sibcall.ll). - PM.add(createDeadMachineInstructionElimPass()); + if (!DisableMachineDCE) + PM.add(createDeadMachineInstructionElimPass()); printAndVerify(PM, "After codegen DCE pass"); if (!DisableMachineLICM) PM.add(createMachineLICMPass()); - PM.add(createMachineCSEPass()); + if (!DisableMachineCSE) + PM.add(createMachineCSEPass()); if (!DisableMachineSink) PM.add(createMachineSinkingPass()); printAndVerify(PM, "After Machine LICM, CSE and Sinking passes"); |