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Add a -print-lsr-output option to LLC, to print the output of the LSR pass.

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llvm-svn: 35522
This commit is contained in:
Chris Lattner 2007-03-31 00:24:43 +00:00
parent c0405a348d
commit 330464a91c
1 changed files with 9 additions and 1 deletions
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10
lib/CodeGen/LLVMTargetMachine.cpp
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@ -14,12 +14,16 @@
#include "llvm/Target/TargetMachine.h"
#include "llvm/PassManager.h"
#include "llvm/Pass.h"
#include "llvm/Assembly/PrintModulePass.h"
#include "llvm/Analysis/LoopPass.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/Target/TargetOptions.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Support/CommandLine.h"
using namespace llvm;
static cl::opt<bool> PrintLSR("print-lsr-output");
FileModel::Model
LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
std::ostream &Out,
@ -28,7 +32,11 @@ LLVMTargetMachine::addPassesToEmitFile(FunctionPassManager &PM,
// Standard LLVM-Level Passes.
// Run loop strength reduction before anything else.
if (!Fast) PM.add(createLoopStrengthReducePass(getTargetLowering()));
if (!Fast) {
PM.add(createLoopStrengthReducePass(getTargetLowering()));
if (PrintLSR)
PM.add(new PrintFunctionPass("\n\n*** Code after LSR *** \n", &cerr));
}
// FIXME: Implement efficient support for garbage collection intrinsics.
PM.add(createLowerGCPass());