diff options
| -rw-r--r-- | include/llvm/Target/TargetMachine.h | 9 | ||||
| -rw-r--r-- | lib/CodeGen/LLVMTargetMachine.cpp | 4 |
2 files changed, 12 insertions, 1 deletions
diff --git a/include/llvm/Target/TargetMachine.h b/include/llvm/Target/TargetMachine.h index 5c721a685c..7c86a8d7db 100644 --- a/include/llvm/Target/TargetMachine.h +++ b/include/llvm/Target/TargetMachine.h @@ -280,7 +280,14 @@ public: virtual bool addInstSelector(PassManagerBase &PM, bool Fast) { return true; } - + + /// addPreRegAllocPasses - This method may be implemented by targets that want + /// to run passes immediately before register allocation. This should return + /// true if -print-machineinstrs should print after these passes. + virtual bool addPreRegAlloc(PassManagerBase &PM, bool Fast) { + return false; + } + /// addPostRegAllocPasses - This method may be implemented by targets that /// want to run passes after register allocation but before prolog-epilog /// insertion. This should return true if -print-machineinstrs should print diff --git a/lib/CodeGen/LLVMTargetMachine.cpp b/lib/CodeGen/LLVMTargetMachine.cpp index c65a6b9a79..3927eee503 100644 --- a/lib/CodeGen/LLVMTargetMachine.cpp +++ b/lib/CodeGen/LLVMTargetMachine.cpp @@ -94,6 +94,10 @@ LLVMTargetMachine::addPassesToEmitFile(PassManagerBase &PM, if (EnableSinking) PM.add(createMachineSinkingPass()); + // Run pre-ra passes. + if (addPreRegAlloc(PM, Fast) && PrintMachineCode) + PM.add(createMachineFunctionPrinterPass(cerr)); + // Perform register allocation to convert to a concrete x86 representation PM.add(createRegisterAllocator()); |