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Whitespace cleanups.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86855 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-11-11 18:38:14 +00:00
parent a127edceae
commit 4e3f125e18
1 changed files with 92 additions and 93 deletions
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5
lib/CodeGen/BranchFolding.cpp
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@ -63,7 +63,6 @@ bool BranchFolderPass::runOnMachineFunction(MachineFunction &MF) {
}
BranchFolder::BranchFolder(bool defaultEnableTailMerge) {
switch (FlagEnableTailMerge) {
case cl::BOU_UNSET: EnableTailMerge = defaultEnableTailMerge; break;
@ -279,7 +278,6 @@ static unsigned HashMachineInstr(const MachineInstr *MI) {
/// branch must be inserted). For blocks with a successor, one of the
/// two blocks to be tail-merged will end with a branch already, so
/// it gains to cross-jump even for one instruction.
static unsigned HashEndOfMBB(const MachineBasicBlock *MBB,
unsigned minCommonTailLength) {
MachineBasicBlock::const_iterator I = MBB->end();
@ -404,7 +402,6 @@ static unsigned EstimateRuntime(MachineBasicBlock::iterator I,
// branches temporarily for tail merging). In the case where CurMBB ends
// with a conditional branch to the next block, optimize by reversing the
// test and conditionally branching to SuccMBB instead.
static void FixTail(MachineBasicBlock* CurMBB, MachineBasicBlock *SuccBB,
const TargetInstrInfo *TII) {
MachineFunction *MF = CurMBB->getParent();
@ -568,6 +565,7 @@ unsigned BranchFolder::CreateCommonTailOnlyBlock(MachineBasicBlock *&PredBB,
MachineBasicBlock *newMBB = SplitMBBAt(*MBB, BBI);
SameTails[commonTailIndex].first->second = newMBB;
SameTails[commonTailIndex].second = newMBB->begin();
// If we split PredBB, newMBB is the new predecessor.
if (PredBB == MBB)
PredBB = newMBB;
@ -669,6 +667,7 @@ bool BranchFolder::TailMergeBlocks(MachineFunction &MF) {
if (I->succ_empty())
MergePotentials.push_back(std::make_pair(HashEndOfMBB(I, 2U), I));
}
// See if we can do any tail merging on those.
if (MergePotentials.size() < TailMergeThreshold &&
MergePotentials.size() >= 2)