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Incorporate review comments from r221742

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This change implements the comment and style changes Sean requested during post commit review with r221742.  Sorry for the delay.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222707 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Philip Reames 2014-11-24 23:24:24 +00:00
parent 2543acd169
commit 4e89fd0f4b
1 changed files with 11 additions and 2 deletions
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13
lib/IR/Function.cpp
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@ -456,7 +456,15 @@ unsigned Function::lookupIntrinsicID() const {
}
/// Returns a stable mangling for the type specified for use in the name
/// mangling scheme used by 'any' types in intrinsic signatures.
/// mangling scheme used by 'any' types in intrinsic signatures. The mangling
/// of named types is simply their name. Manglings for unnamed types consist
/// of a prefix ('p' for pointers, 'a' for arrays, 'f_' for functions)
/// combined with the mangling of their component types. A vararg function
/// type will have a suffix of 'vararg'. Since function types can contain
/// other function types, we close a function type mangling with suffix 'f'
/// which can't be confused with it's prefix. This ensures we don't have
/// collisions between two unrelated function types. Otherwise, you might
/// parse ffXX as f(fXX) or f(fX)X. (X is a placeholder for any other type.)
static std::string getMangledTypeStr(Type* Ty) {
std::string Result;
if (PointerType* PTyp = dyn_cast<PointerType>(Ty)) {
@ -476,7 +484,8 @@ static std::string getMangledTypeStr(Type* Ty) {
Result += getMangledTypeStr(FT->getParamType(i));
if (FT->isVarArg())
Result += "vararg";
Result += "f"; //ensure distinguishable
// Ensure nested function types are distinguishable.
Result += "f";
} else if (Ty)
Result += EVT::getEVT(Ty).getEVTString();
return Result;