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[tblgen] GCC/MS builtin to target intrisics map.

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Patch by Ettore Speziale

Allow TableGen to generate static functions to perform GCC/MS builtin name to
target specific intrinsic ID mapping.

https://reviews.llvm.org/D31150

llvm-svn: 300735
This commit is contained in:
Aditya Nandakumar 2017-04-19 19:14:20 +00:00
parent 84d0c8fabe
commit 3ace9dee64
2 changed files with 17 additions and 7 deletions
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2
include/llvm/TableGen/StringToOffsetTable.h
View File

@ -27,6 +27,8 @@ class StringToOffsetTable {
std::string AggregateString;
public:
bool Empty() const { return StringOffset.empty(); }
unsigned GetOrAddStringOffset(StringRef Str, bool appendZero = true) {
auto IterBool =
StringOffset.insert(std::make_pair(Str, AggregateString.size()));

22
utils/TableGen/IntrinsicEmitter.cpp
View File

@ -84,14 +84,11 @@ void IntrinsicEmitter::run(raw_ostream &OS) {
// Emit the intrinsic parameter attributes.
EmitAttributes(Ints, OS);
// Individual targets don't need GCC builtin name mappings.
if (!TargetOnly) {
// Emit code to translate GCC builtins into LLVM intrinsics.
EmitIntrinsicToBuiltinMap(Ints, true, OS);
// Emit code to translate GCC builtins into LLVM intrinsics.
EmitIntrinsicToBuiltinMap(Ints, true, OS);
// Emit code to translate MS builtins into LLVM intrinsics.
EmitIntrinsicToBuiltinMap(Ints, false, OS);
}
// Emit code to translate MS builtins into LLVM intrinsics.
EmitIntrinsicToBuiltinMap(Ints, false, OS);
EmitSuffix(OS);
}
@ -756,6 +753,17 @@ void IntrinsicEmitter::EmitIntrinsicToBuiltinMap(
<< "Builtin(const char "
<< "*TargetPrefixStr, StringRef BuiltinNameStr) {\n";
}
if (Table.Empty()) {
OS << " return ";
if (!TargetPrefix.empty())
OS << "(" << TargetPrefix << "Intrinsic::ID)";
OS << "Intrinsic::not_intrinsic;\n";
OS << "}\n";
OS << "#endif\n\n";
return;
}
OS << " static const char BuiltinNames[] = {\n";
Table.EmitCharArray(OS);
OS << " };\n\n";