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Added option -align-loops=<true/false> to disable loop aligner pass.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47736 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-02-28 23:29:57 +00:00
parent 9b80bd8ea2
commit d703ed6aed
4 changed files with 7 additions and 8 deletions
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6
lib/CodeGen/LLVMTargetMachine.cpp
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@ -37,6 +37,9 @@ static cl::opt<bool>
EnableSinking("enable-sinking", cl::init(false), cl::Hidden, EnableSinking("enable-sinking", cl::init(false), cl::Hidden,
cl::desc("Perform sinking on machine code")); cl::desc("Perform sinking on machine code"));
static cl::opt<bool> static cl::opt<bool>
AlignLoops("align-loops", cl::init(true), cl::Hidden,
cl::desc("Align loop headers"));
static cl::opt<bool>
PerformLICM("machine-licm", PerformLICM("machine-licm",
cl::init(false), cl::Hidden, cl::init(false), cl::Hidden,
cl::desc("Perform loop-invariant code motion on machine code")); cl::desc("Perform loop-invariant code motion on machine code"));
@ -132,6 +135,9 @@ LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
if (addPreEmitPass(PM, Fast) && PrintMachineCode) if (addPreEmitPass(PM, Fast) && PrintMachineCode)
PM.add(createMachineFunctionPrinterPass(cerr)); PM.add(createMachineFunctionPrinterPass(cerr));
if (AlignLoops)
PM.add(createLoopAlignerPass());
switch (FileType) { switch (FileType) {
default: default:
break; break;

1
lib/CodeGen/LoopAligner.cpp
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@ -18,6 +18,7 @@
#include "llvm/CodeGen/Passes.h" #include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetLowering.h" #include "llvm/Target/TargetLowering.h"
#include "llvm/Target/TargetMachine.h" #include "llvm/Target/TargetMachine.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Compiler.h" #include "llvm/Support/Compiler.h"
#include "llvm/Support/Debug.h" #include "llvm/Support/Debug.h"
using namespace llvm; using namespace llvm;

7
lib/Target/X86/X86TargetMachine.cpp
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@ -164,13 +164,6 @@ bool X86TargetMachine::addPostRegAlloc(FunctionPassManager &PM, bool Fast) {
return true; // -print-machineinstr should print after this. return true; // -print-machineinstr should print after this.
} }
bool X86TargetMachine::addPreEmitPass(FunctionPassManager &PM, bool Fast) {
if (Fast) return false;
PM.add(createLoopAlignerPass());
return true;
}
bool X86TargetMachine::addAssemblyEmitter(FunctionPassManager &PM, bool Fast, bool X86TargetMachine::addAssemblyEmitter(FunctionPassManager &PM, bool Fast,
std::ostream &Out) { std::ostream &Out) {
PM.add(createX86CodePrinterPass(Out, *this)); PM.add(createX86CodePrinterPass(Out, *this));

1
lib/Target/X86/X86TargetMachine.h
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@ -63,7 +63,6 @@ public:
// Set up the pass pipeline. // Set up the pass pipeline.
virtual bool addInstSelector(FunctionPassManager &PM, bool Fast); virtual bool addInstSelector(FunctionPassManager &PM, bool Fast);
virtual bool addPostRegAlloc(FunctionPassManager &PM, bool Fast); virtual bool addPostRegAlloc(FunctionPassManager &PM, bool Fast);
virtual bool addPreEmitPass(FunctionPassManager &PM, bool Fast);
virtual bool addAssemblyEmitter(FunctionPassManager &PM, bool Fast, virtual bool addAssemblyEmitter(FunctionPassManager &PM, bool Fast,
std::ostream &Out); std::ostream &Out);
virtual bool addCodeEmitter(FunctionPassManager &PM, bool Fast, virtual bool addCodeEmitter(FunctionPassManager &PM, bool Fast,