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Fix auto-upgrade of intrinsics to work properly with both assembly and

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bytecode reading. This code is crufty, the result of much hacking to get things
working correctly. Cleanup patches will follow.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25682 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer
2006-01-27 11:49:27 +00:00
parent 2f81fb78dc
commit e2a5fb0e08
4 changed files with 145 additions and 49 deletions
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45
lib/Bytecode/Reader/Reader.cpp
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@@ -861,7 +861,6 @@ void BytecodeReader::ParseInstruction(std::vector<unsigned> &Oprnds,
Result = new CallInst(F, Params);
if (isTailCall) cast<CallInst>(Result)->setTailCall();
if (CallingConv) cast<CallInst>(Result)->setCallingConv(CallingConv);
isCall = true;
break;
}
case 56: // Invoke with encoded CC
@@ -1034,13 +1033,6 @@ void BytecodeReader::ParseInstruction(std::vector<unsigned> &Oprnds,
BB->getInstList().push_back(Result);
if (this->hasUpgradedIntrinsicFunctions && isCall)
if (Instruction* inst = UpgradeIntrinsicCall(cast<CallInst>(Result))) {
Result->replaceAllUsesWith(inst);
Result->eraseFromParent();
Result = inst;
}
unsigned TypeSlot;
if (Result->getType() == InstTy)
TypeSlot = iType;
@@ -1862,6 +1854,25 @@ void BytecodeReader::ParseFunctionBody(Function* F) {
delete PlaceHolder;
}
// If upgraded intrinsic functions were detected during reading of the
// module information, then we need to look for instructions that need to
// be upgraded. This can't be done while the instructions are read in because
// additional instructions inserted mess up the slot numbering.
if (!upgradedFunctions.empty()) {
for (Function::iterator BI = F->begin(), BE = F->end(); BI != BE; ++BI)
for (BasicBlock::iterator II = BI->begin(), IE = BI->end();
II != IE; ++II)
if (CallInst* CI = dyn_cast<CallInst>(II)) {
std::map<Function*,Function*>::iterator FI =
upgradedFunctions.find(CI->getCalledFunction());
if (FI != upgradedFunctions.end()) {
Instruction* newI = UpgradeIntrinsicCall(CI,FI->second);
CI->replaceAllUsesWith(newI);
CI->eraseFromParent();
}
}
}
// Clear out function-level types...
FunctionTypes.clear();
CompactionTypes.clear();
@@ -1937,6 +1948,7 @@ void BytecodeReader::ParseAllFunctionBodies() {
++Fi;
}
LazyFunctionLoadMap.clear();
}
/// Parse the global type list
@@ -2055,13 +2067,6 @@ void BytecodeReader::ParseModuleGlobalInfo() {
Function *Func = new Function(FTy, GlobalValue::ExternalLinkage,
"", TheModule);
// Replace with upgraded intrinsic function, if applicable.
if (Function* upgrdF = UpgradeIntrinsicFunction(Func)) {
hasUpgradedIntrinsicFunctions = true;
Func->eraseFromParent();
Func = upgrdF;
}
insertValue(Func, (FnSignature & (~0U >> 1)) >> 5, ModuleValues);
// Flags are not used yet.
@@ -2433,6 +2438,16 @@ void BytecodeReader::ParseBytecode(BufPtr Buf, unsigned Length,
if (hasFunctions())
error("Function expected, but bytecode stream ended!");
// Look for intrinsic functions to upgrade, upgrade them, and save the
// mapping from old function to new for use later when instructions are
// converted.
for (Module::iterator FI = TheModule->begin(), FE = TheModule->end();
FI != FE; ++FI)
if (Function* newF = UpgradeIntrinsicFunction(FI)) {
upgradedFunctions.insert(std::make_pair(FI,newF));
FI->setName("");
}
// Tell the handler we're done with the module
if (Handler)
Handler->handleModuleEnd(ModuleID);