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Revert r85346 change to control tail merging by CodeGenOpt::Level.

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I'm going to redo this using the OptimizeForSize function attribute.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85426 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bob Wilson
2009-10-28 20:46:46 +00:00
parent 90f48e7c91
commit a597103c32
6 changed files with 19 additions and 29 deletions
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10
lib/CodeGen/BranchFolding.h
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@@ -12,7 +12,6 @@
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunctionPass.h"
#include "llvm/Target/TargetMachine.h"
#include <vector>
namespace llvm {
@@ -24,7 +23,7 @@ namespace llvm {
class BranchFolder {
public:
explicit BranchFolder(bool defaultEnableTailMerge, CodeGenOpt::Level OL);
explicit BranchFolder(bool defaultEnableTailMerge);
bool OptimizeFunction(MachineFunction &MF,
const TargetInstrInfo *tii,
@@ -38,7 +37,6 @@ namespace llvm {
typedef std::pair<MPIterator, MachineBasicBlock::iterator> SameTailElt;
std::vector<SameTailElt> SameTails;
CodeGenOpt::Level OptLevel;
bool EnableTailMerge;
const TargetInstrInfo *TII;
const TargetRegisterInfo *TRI;
@@ -75,10 +73,8 @@ namespace llvm {
public BranchFolder {
public:
static char ID;
explicit BranchFolderPass(bool defaultEnableTailMerge,
CodeGenOpt::Level OptLevel)
: MachineFunctionPass(&ID),
BranchFolder(defaultEnableTailMerge, OptLevel) {}
explicit BranchFolderPass(bool defaultEnableTailMerge)
: MachineFunctionPass(&ID), BranchFolder(defaultEnableTailMerge) {}
virtual bool runOnMachineFunction(MachineFunction &MF);
virtual const char *getPassName() const { return "Control Flow Optimizer"; }