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Add peephole optimization pass at the end of code generation.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3846 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve 2002-09-20 00:52:43 +00:00
parent d55697cf13
commit e5b2565a02
1 changed files with 7 additions and 5 deletions
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12
lib/Target/TargetMachine.cpp
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@ -12,6 +12,7 @@
#include "llvm/CodeGen/InstrSelection.h"
#include "llvm/CodeGen/InstrScheduling.h"
#include "llvm/CodeGen/RegisterAllocation.h"
#include "llvm/CodeGen/PeepholeOpts.h"
#include "llvm/CodeGen/MachineCodeForMethod.h"
#include "llvm/CodeGen/MachineCodeForInstruction.h"
#include "llvm/Reoptimizer/Mapping/MappingInfo.h"
@ -32,6 +33,9 @@ static cl::opt<bool> DisablePreSelect("nopreselect",
static cl::opt<bool> DisableSched("nosched",
cl::desc("Disable local scheduling pass"));
static cl::opt<bool> DisablePeephole("nopeephole",
cl::desc("Disable peephole optimization pass"));
//---------------------------------------------------------------------------
// class TargetMachine
//
@ -132,13 +136,11 @@ TargetMachine::addPassesToEmitAssembly(PassManager &PM, std::ostream &Out)
PM.add(getRegisterAllocator(*this));
//PM.add(new OptimizeLeafProcedures());
//PM.add(new DeleteFallThroughBranches());
//PM.add(new RemoveChainedBranches()); // should be folded with previous
//PM.add(new RemoveRedundantOps()); // operations with %g0, NOP, etc.
PM.add(getPrologEpilogInsertionPass());
if (!DisablePeephole)
PM.add(createPeepholeOptsPass(*this));
PM.add(MappingInfoForFunction(Out));
// Output assembly language to the .s file. Assembly emission is split into