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Add a pass to do call graph analyis to overlay the autos and frame sections of

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leaf functions. This pass will be extended to color other nodes of the call tree 
as well in future.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79631 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjiv Gupta
2009-08-21 15:22:33 +00:00
parent 1f2b32c5c6
commit eaa8b1f81d
10 changed files with 202 additions and 8 deletions
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29
lib/Target/PIC16/PIC16TargetObjectFile.cpp
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@@ -82,6 +82,35 @@ getSectionForFunctionFrame(const std::string &FnName) const {
return getPIC16Section(T.c_str(), SectionKind::getDataRel());
}
std::string PIC16TargetObjectFile::getNameForFunctFrame(const Function *F,
bool IsAutosSection) {
std::string SectionName = F->getName();
if (F->hasSection()) {
std::string Sectn = F->getSection();
std::string StrToFind = "Overlay=";
unsigned Pos = Sectn.find(StrToFind);
if (Pos != std::string::npos) {
Pos += StrToFind.length();
std::string Color = "";
char c = Sectn.at(Pos);
// A Color can only consist on upper case letters or underscore.
while ((c >= 'A' && c<= 'Z') || c == '_') {
Color.append(1,c);
Pos++;
if (Pos >= Sectn.length())
break;
c = Sectn.at(Pos);
}
// Autos Section need to be given a different name from function frame.
if (IsAutosSection)
SectionName = PAN::getAutosSectionForColor(Color);
else
SectionName = Color;
}
}
return SectionName;
}
const MCSection *
PIC16TargetObjectFile::getBSSSectionForGlobal(const GlobalVariable *GV) const {
assert(GV->hasInitializer() && "This global doesn't need space");