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Simplify.

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Do not count use of sdisel for single call instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117316 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel 2010-10-25 21:31:46 +00:00
parent 5258b61966
commit df8370bd70
2 changed files with 10 additions and 10 deletions
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2
include/llvm/CodeGen/SelectionDAGISel.h
View File

@ -287,7 +287,7 @@ private:
bool TryToFoldFastISelLoad(const LoadInst *LI, FastISel *FastIS); bool TryToFoldFastISelLoad(const LoadInst *LI, FastISel *FastIS);
void FinishBasicBlock(); void FinishBasicBlock();
bool SelectBasicBlock(BasicBlock::const_iterator Begin, void SelectBasicBlock(BasicBlock::const_iterator Begin,
BasicBlock::const_iterator End, BasicBlock::const_iterator End,
bool &HadTailCall); bool &HadTailCall);
void CodeGenAndEmitDAG(); void CodeGenAndEmitDAG();

18
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
View File

@ -376,7 +376,7 @@ bool SelectionDAGISel::runOnMachineFunction(MachineFunction &mf) {
return true; return true;
} }
bool void
SelectionDAGISel::SelectBasicBlock(BasicBlock::const_iterator Begin, SelectionDAGISel::SelectBasicBlock(BasicBlock::const_iterator Begin,
BasicBlock::const_iterator End, BasicBlock::const_iterator End,
bool &HadTailCall) { bool &HadTailCall) {
@ -393,7 +393,7 @@ SelectionDAGISel::SelectBasicBlock(BasicBlock::const_iterator Begin,
// Final step, emit the lowered DAG as machine code. // Final step, emit the lowered DAG as machine code.
CodeGenAndEmitDAG(); CodeGenAndEmitDAG();
return Begin != End; return;
} }
void SelectionDAGISel::ComputeLiveOutVRegInfo() { void SelectionDAGISel::ComputeLiveOutVRegInfo() {
@ -783,7 +783,6 @@ void SelectionDAGISel::SelectAllBasicBlocks(const Function &Fn) {
// Iterate over all basic blocks in the function. // Iterate over all basic blocks in the function.
for (Function::const_iterator I = Fn.begin(), E = Fn.end(); I != E; ++I) { for (Function::const_iterator I = Fn.begin(), E = Fn.end(); I != E; ++I) {
bool BBSelectedUsingDAG = false;
const BasicBlock *LLVMBB = &*I; const BasicBlock *LLVMBB = &*I;
#ifndef NDEBUG #ifndef NDEBUG
CheckLineNumbers(LLVMBB); CheckLineNumbers(LLVMBB);
@ -872,7 +871,7 @@ void SelectionDAGISel::SelectAllBasicBlocks(const Function &Fn) {
} }
bool HadTailCall = false; bool HadTailCall = false;
BBSelectedUsingDAG |= SelectBasicBlock(Inst, BI, HadTailCall); SelectBasicBlock(Inst, BI, HadTailCall);
// If the call was emitted as a tail call, we're done with the block. // If the call was emitted as a tail call, we're done with the block.
if (HadTailCall) { if (HadTailCall) {
@ -902,18 +901,19 @@ void SelectionDAGISel::SelectAllBasicBlocks(const Function &Fn) {
FastIS->recomputeInsertPt(); FastIS->recomputeInsertPt();
} }
if (Begin != BI)
++NumDAGBlocks;
else
++NumFastIselBlocks;
// Run SelectionDAG instruction selection on the remainder of the block // Run SelectionDAG instruction selection on the remainder of the block
// not handled by FastISel. If FastISel is not run, this is the entire // not handled by FastISel. If FastISel is not run, this is the entire
// block. // block.
bool HadTailCall; bool HadTailCall;
BBSelectedUsingDAG |= SelectBasicBlock(Begin, BI, HadTailCall); SelectBasicBlock(Begin, BI, HadTailCall);
FinishBasicBlock(); FinishBasicBlock();
FuncInfo->PHINodesToUpdate.clear(); FuncInfo->PHINodesToUpdate.clear();
if (BBSelectedUsingDAG)
++NumDAGBlocks;
else
++NumFastIselBlocks;
} }
delete FastIS; delete FastIS;