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refactor the interface to InlineFunction so that most of the in/out

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arguments are handled with a new InlineFunctionInfo class.  This 
makes it easier to extend InlineFunction to return more info in the
future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102137 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2010-04-22 23:07:58 +00:00
parent 9517144f53
commit 60915146f4
6 changed files with 64 additions and 47 deletions
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42
lib/Transforms/Utils/InlineFunction.cpp
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@ -28,13 +28,11 @@
#include "llvm/Support/CallSite.h"
using namespace llvm;
bool llvm::InlineFunction(CallInst *CI, CallGraph *CG, const TargetData *TD,
SmallVectorImpl<AllocaInst*> *StaticAllocas) {
return InlineFunction(CallSite(CI), CG, TD, StaticAllocas);
bool llvm::InlineFunction(CallInst *CI, InlineFunctionInfo &IFI) {
return InlineFunction(CallSite(CI), IFI);
}
bool llvm::InlineFunction(InvokeInst *II, CallGraph *CG, const TargetData *TD,
SmallVectorImpl<AllocaInst*> *StaticAllocas) {
return InlineFunction(CallSite(II), CG, TD, StaticAllocas);
bool llvm::InlineFunction(InvokeInst *II, InlineFunctionInfo &IFI) {
return InlineFunction(CallSite(II), IFI);
}
@ -232,13 +230,15 @@ static void UpdateCallGraphAfterInlining(CallSite CS,
// exists in the instruction stream. Similiarly this will inline a recursive
// function by one level.
//
bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
SmallVectorImpl<AllocaInst*> *StaticAllocas) {
bool llvm::InlineFunction(CallSite CS, InlineFunctionInfo &IFI) {
Instruction *TheCall = CS.getInstruction();
LLVMContext &Context = TheCall->getContext();
assert(TheCall->getParent() && TheCall->getParent()->getParent() &&
"Instruction not in function!");
// If IFI has any state in it, zap it before we fill it in.
IFI.reset();
const Function *CalledFunc = CS.getCalledFunction();
if (CalledFunc == 0 || // Can't inline external function or indirect
CalledFunc->isDeclaration() || // call, or call to a vararg function!
@ -305,7 +305,7 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
// Create the alloca. If we have TargetData, use nice alignment.
unsigned Align = 1;
if (TD) Align = TD->getPrefTypeAlignment(AggTy);
if (IFI.TD) Align = IFI.TD->getPrefTypeAlignment(AggTy);
Value *NewAlloca = new AllocaInst(AggTy, 0, Align,
I->getName(),
&*Caller->begin()->begin());
@ -318,11 +318,11 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
Value *SrcCast = new BitCastInst(*AI, VoidPtrTy, "tmp", TheCall);
Value *Size;
if (TD == 0)
if (IFI.TD == 0)
Size = ConstantExpr::getSizeOf(AggTy);
else
Size = ConstantInt::get(Type::getInt64Ty(Context),
TD->getTypeStoreSize(AggTy));
IFI.TD->getTypeStoreSize(AggTy));
// Always generate a memcpy of alignment 1 here because we don't know
// the alignment of the src pointer. Other optimizations can infer
@ -336,7 +336,7 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
CallInst::Create(MemCpyFn, CallArgs, CallArgs+5, "", TheCall);
// If we have a call graph, update it.
if (CG) {
if (CallGraph *CG = IFI.CG) {
CallGraphNode *MemCpyCGN = CG->getOrInsertFunction(MemCpyFn);
CallGraphNode *CallerNode = (*CG)[Caller];
CallerNode->addCalledFunction(TheMemCpy, MemCpyCGN);
@ -355,14 +355,14 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
// (which can happen, e.g., because an argument was constant), but we'll be
// happy with whatever the cloner can do.
CloneAndPruneFunctionInto(Caller, CalledFunc, ValueMap, Returns, ".i",
&InlinedFunctionInfo, TD, TheCall);
&InlinedFunctionInfo, IFI.TD, TheCall);
// Remember the first block that is newly cloned over.
FirstNewBlock = LastBlock; ++FirstNewBlock;
// Update the callgraph if requested.
if (CG)
UpdateCallGraphAfterInlining(CS, FirstNewBlock, ValueMap, *CG);
if (IFI.CG)
UpdateCallGraphAfterInlining(CS, FirstNewBlock, ValueMap, *IFI.CG);
}
// If there are any alloca instructions in the block that used to be the entry
@ -389,13 +389,13 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
// Keep track of the static allocas that we inline into the caller if the
// StaticAllocas pointer is non-null.
if (StaticAllocas) StaticAllocas->push_back(AI);
IFI.StaticAllocas.push_back(AI);
// Scan for the block of allocas that we can move over, and move them
// all at once.
while (isa<AllocaInst>(I) &&
isa<Constant>(cast<AllocaInst>(I)->getArraySize())) {
if (StaticAllocas) StaticAllocas->push_back(cast<AllocaInst>(I));
IFI.StaticAllocas.push_back(cast<AllocaInst>(I));
++I;
}
@ -419,7 +419,7 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
// If we are preserving the callgraph, add edges to the stacksave/restore
// functions for the calls we insert.
CallGraphNode *StackSaveCGN = 0, *StackRestoreCGN = 0, *CallerNode = 0;
if (CG) {
if (CallGraph *CG = IFI.CG) {
StackSaveCGN = CG->getOrInsertFunction(StackSave);
StackRestoreCGN = CG->getOrInsertFunction(StackRestore);
CallerNode = (*CG)[Caller];
@ -428,13 +428,13 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
// Insert the llvm.stacksave.
CallInst *SavedPtr = CallInst::Create(StackSave, "savedstack",
FirstNewBlock->begin());
if (CG) CallerNode->addCalledFunction(SavedPtr, StackSaveCGN);
if (IFI.CG) CallerNode->addCalledFunction(SavedPtr, StackSaveCGN);
// Insert a call to llvm.stackrestore before any return instructions in the
// inlined function.
for (unsigned i = 0, e = Returns.size(); i != e; ++i) {
CallInst *CI = CallInst::Create(StackRestore, SavedPtr, "", Returns[i]);
if (CG) CallerNode->addCalledFunction(CI, StackRestoreCGN);
if (IFI.CG) CallerNode->addCalledFunction(CI, StackRestoreCGN);
}
// Count the number of StackRestore calls we insert.
@ -447,7 +447,7 @@ bool llvm::InlineFunction(CallSite CS, CallGraph *CG, const TargetData *TD,
BB != E; ++BB)
if (UnwindInst *UI = dyn_cast<UnwindInst>(BB->getTerminator())) {
CallInst *CI = CallInst::Create(StackRestore, SavedPtr, "", UI);
if (CG) CallerNode->addCalledFunction(CI, StackRestoreCGN);
if (IFI.CG) CallerNode->addCalledFunction(CI, StackRestoreCGN);
++NumStackRestores;
}
}