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Add hook to insert late LLVM=>LLVM passes just before isel

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109354 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Anton Korobeynikov 2010-07-24 20:48:54 +00:00
parent fee12b2985
commit 8c64b9766e
2 changed files with 11 additions and 4 deletions
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13
include/llvm/Target/TargetMachine.h
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@ -312,10 +312,15 @@ public:
bool DisableVerify = true);
/// Target-Independent Code Generator Pass Configuration Options.
/// addInstSelector - This method should add any "last minute" LLVM->LLVM
/// passes, then install an instruction selector pass, which converts from
/// LLVM code to machine instructions.
/// addPreISelPasses - This method should add any "last minute" LLVM->LLVM
/// passes (which are run just before instruction selector).
virtual bool addPreISel(PassManagerBase &, CodeGenOpt::Level) {
return true;
}
/// addInstSelector - This method should install an instruction selector pass,
/// which converts from LLVM code to machine instructions.
virtual bool addInstSelector(PassManagerBase &, CodeGenOpt::Level) {
return true;
}

2
lib/CodeGen/LLVMTargetMachine.cpp
View File

@ -307,6 +307,8 @@ bool LLVMTargetMachine::addCommonCodeGenPasses(PassManagerBase &PM,
PM.add(createStackProtectorPass(getTargetLowering()));
addPreISel(PM, OptLevel);
if (PrintISelInput)
PM.add(createPrintFunctionPass("\n\n"
"*** Final LLVM Code input to ISel ***\n",