6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-11-01 15:11:24 +00:00
Code Issues Projects Releases Wiki Activity

Reorder these.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61873 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan Sands 2009-01-07 19:17:02 +00:00
parent 00e7ea98c0
commit acf984417f
1 changed files with 24 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
lib/Transforms/IPO/FunctionAttrs.cpp
View File

@ -211,30 +211,6 @@ bool FunctionAttrs::isCaptured(Function &F, Value *V) {
unsigned Depth = UD.getInt();
switch (I->getOpcode()) {
case Instruction::Store:
if (V == I->getOperand(0)) {
// Stored the pointer - it may be captured. If it is stored to a local
// object (alloca) then track that object. Otherwise give up.
Value *Target = I->getOperand(1)->getUnderlyingObject();
if (!isa<AllocaInst>(Target))
// Didn't store to an obviously local object - captured.
return true;
if (Depth >= 3)
// Alloca recursion too deep - give up.
return true;
// Analyze all uses of the alloca.
for (Value::use_iterator UI = Target->use_begin(),
UE = Target->use_end(); UI != UE; ++UI) {
UseWithDepth NUD(&UI.getUse(), Depth + 1);
if (Visited.insert(NUD))
Worklist.push_back(NUD);
}
}
// Storing to the pointee does not cause the pointer to be captured.
break;
case Instruction::Free:
// Freeing a pointer does not cause it to be captured.
break;
case Instruction::Call:
case Instruction::Invoke: {
CallSite CS = CallSite::get(I);
@ -259,6 +235,30 @@ bool FunctionAttrs::isCaptured(Function &F, Value *V) {
// captured.
break;
}
case Instruction::Free:
// Freeing a pointer does not cause it to be captured.
break;
case Instruction::Store:
if (V == I->getOperand(0)) {
// Stored the pointer - it may be captured. If it is stored to a local
// object (alloca) then track that object. Otherwise give up.
Value *Target = I->getOperand(1)->getUnderlyingObject();
if (!isa<AllocaInst>(Target))
// Didn't store to an obviously local object - captured.
return true;
if (Depth >= 3)
// Alloca recursion too deep - give up.
return true;
// Analyze all uses of the alloca.
for (Value::use_iterator UI = Target->use_begin(),
UE = Target->use_end(); UI != UE; ++UI) {
UseWithDepth NUD(&UI.getUse(), Depth + 1);
if (Visited.insert(NUD))
Worklist.push_back(NUD);
}
}
// Storing to the pointee does not cause the pointer to be captured.
break;
case Instruction::BitCast:
case Instruction::GetElementPtr:
case Instruction::Load: