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Add mechanism to select register allocator to use

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5079 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2002-12-16 16:15:51 +00:00
parent b74e83c898
commit 439a27ac42
1 changed files with 11 additions and 2 deletions
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13
lib/Target/X86/X86TargetMachine.cpp
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@ -8,11 +8,17 @@
#include "llvm/Transforms/Scalar.h"
#include "llvm/Target/TargetMachineImpls.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "Support/Statistic.h"
#include "llvm/PassManager.h"
#include "X86.h"
#include "Support/CommandLine.h"
#include "Support/Statistic.h"
#include <iostream>
namespace {
cl::opt<bool> UseLocalRA("local-ra",
cl::desc("Use Local RegAlloc instead of Simple RA"));
}
// allocateX86TargetMachine - Allocate and return a subclass of TargetMachine
// that implements the X86 backend.
//
@ -43,7 +49,10 @@ bool X86TargetMachine::addPassesToJITCompile(PassManager &PM) {
DEBUG(PM.add(createMachineFunctionPrinterPass()));
// Perform register allocation to convert to a concrete x86 representation
PM.add(createSimpleRegisterAllocator(*this));
if (UseLocalRA)
PM.add(createLocalRegisterAllocator(*this));
else
PM.add(createSimpleRegisterAllocator(*this));
// Print the instruction selected machine code...
// PM.add(createMachineFunctionPrinterPass());