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Implement function prefix data as an IR feature.

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Previous discussion:
http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-July/063909.html

Differential Revision: http://llvm-reviews.chandlerc.com/D1191

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190773 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Peter Collingbourne
2013-09-16 01:08:15 +00:00
parent fabfb5d588
commit 1e3037f0be
20 changed files with 213 additions and 13 deletions
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18
lib/Bitcode/Reader/BitcodeReader.cpp
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@ -1106,9 +1106,11 @@ uint64_t BitcodeReader::decodeSignRotatedValue(uint64_t V) {
bool BitcodeReader::ResolveGlobalAndAliasInits() {
std::vector<std::pair<GlobalVariable*, unsigned> > GlobalInitWorklist;
std::vector<std::pair<GlobalAlias*, unsigned> > AliasInitWorklist;
std::vector<std::pair<Function*, unsigned> > FunctionPrefixWorklist;
GlobalInitWorklist.swap(GlobalInits);
AliasInitWorklist.swap(AliasInits);
FunctionPrefixWorklist.swap(FunctionPrefixes);
while (!GlobalInitWorklist.empty()) {
unsigned ValID = GlobalInitWorklist.back().second;
@ -1136,6 +1138,20 @@ bool BitcodeReader::ResolveGlobalAndAliasInits() {
}
AliasInitWorklist.pop_back();
}
while (!FunctionPrefixWorklist.empty()) {
unsigned ValID = FunctionPrefixWorklist.back().second;
if (ValID >= ValueList.size()) {
FunctionPrefixes.push_back(FunctionPrefixWorklist.back());
} else {
if (Constant *C = dyn_cast<Constant>(ValueList[ValID]))
FunctionPrefixWorklist.back().first->setPrefixData(C);
else
return Error("Function prefix is not a constant!");
}
FunctionPrefixWorklist.pop_back();
}
return false;
}
@ -1881,6 +1897,8 @@ bool BitcodeReader::ParseModule(bool Resume) {
if (Record.size() > 9)
UnnamedAddr = Record[9];
Func->setUnnamedAddr(UnnamedAddr);
if (Record.size() > 10 && Record[10] != 0)
FunctionPrefixes.push_back(std::make_pair(Func, Record[10]-1));
ValueList.push_back(Func);
// If this is a function with a body, remember the prototype we are