Significantly reduce the compiled size of Functions.cpp by turning a big blob of tblgen
generated code (for Intrinsic::getType) into a table. This handles common cases right now,
but I plan to extend it to handle all cases and merge in type verification logic as well
in follow-on patches.
llvm-svn: 156905
diff --git a/llvm/lib/VMCore/Function.cpp b/llvm/lib/VMCore/Function.cpp
index 9b098a2..eb5ffb3 100644
--- a/llvm/lib/VMCore/Function.cpp
+++ b/llvm/lib/VMCore/Function.cpp
@@ -29,7 +29,6 @@
#include "llvm/ADT/StringExtras.h"
using namespace llvm;
-
// Explicit instantiations of SymbolTableListTraits since some of the methods
// are not in the public header file...
template class llvm::SymbolTableListTraits<Argument, Function>;
@@ -358,17 +357,57 @@
return Result;
}
+#define GET_INTRINSTIC_GENERATOR_GLOBAL
+#include "llvm/Intrinsics.gen"
+#undef GET_INTRINSTIC_GENERATOR_GLOBAL
+
+static Type *DecodeFixedType(unsigned &TableVal, LLVMContext &Context) {
+ unsigned Nibble = TableVal & 0xF;
+ TableVal >>= 4;
+
+ switch ((IIT_Info)Nibble) {
+ case IIT_Done: return Type::getVoidTy(Context);
+ case IIT_I1: return Type::getInt1Ty(Context);
+ case IIT_I8: return Type::getInt8Ty(Context);
+ case IIT_I16: return Type::getInt16Ty(Context);
+ case IIT_I32: return Type::getInt32Ty(Context);
+ case IIT_I64: return Type::getInt64Ty(Context);
+ case IIT_F32: return Type::getFloatTy(Context);
+ case IIT_F64: return Type::getDoubleTy(Context);
+ case IIT_V2: return VectorType::get(DecodeFixedType(TableVal, Context), 2);
+ case IIT_V4: return VectorType::get(DecodeFixedType(TableVal, Context), 4);
+ case IIT_V8: return VectorType::get(DecodeFixedType(TableVal, Context), 8);
+ case IIT_V16: return VectorType::get(DecodeFixedType(TableVal, Context), 16);
+ case IIT_MMX: return Type::getX86_MMXTy(Context);
+ case IIT_PTR: return PointerType::get(DecodeFixedType(TableVal, Context),0);
+ case IIT_ARG: assert(0 && "Unimp!");
+ }
+ llvm_unreachable("unhandled");
+}
+
+
FunctionType *Intrinsic::getType(LLVMContext &Context,
- ID id, ArrayRef<Type*> Tys) {
- Type *ResultTy = NULL;
+ ID id, ArrayRef<Type*> Tys) {
+ Type *ResultTy = 0;
SmallVector<Type*, 8> ArgTys;
- bool IsVarArg = false;
+
+ // Check to see if the intrinsic's type was expressible by the table.
+ unsigned TableVal = IIT_Table[id-1];
+ if (TableVal != ~0U) {
+ ResultTy = DecodeFixedType(TableVal, Context);
+
+ while (TableVal)
+ ArgTys.push_back(DecodeFixedType(TableVal, Context));
+
+ return FunctionType::get(ResultTy, ArgTys, false);
+ }
+
#define GET_INTRINSIC_GENERATOR
#include "llvm/Intrinsics.gen"
#undef GET_INTRINSIC_GENERATOR
- return FunctionType::get(ResultTy, ArgTys, IsVarArg);
+ return FunctionType::get(ResultTy, ArgTys, false);
}
bool Intrinsic::isOverloaded(ID id) {
@@ -440,4 +479,3 @@
return false;
}
-// vim: sw=2 ai