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Promote arguments of frameaddr / returnaddr builtins to i32 type, when needed. 

This is needed for the platforms, where bitwidth of "int" is not 32 bits
(e.g. 16 on msp430).

llvm-svn: 92176
This commit is contained in:
Anton Korobeynikov 2009-12-27 14:27:22 +00:00
parent 1e26278b3b
commit 73d50b9141
1 changed files with 10 additions and 2 deletions
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12
clang/lib/CodeGen/CGBuiltin.cpp
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@ -340,12 +340,20 @@ RValue CodeGenFunction::EmitBuiltinExpr(const FunctionDecl *FD,
return RValue::get(Address); return RValue::get(Address);
} }
case Builtin::BI__builtin_return_address: { case Builtin::BI__builtin_return_address: {
Value *Depth = EmitScalarExpr(E->getArg(0));
Depth = Builder.CreateIntCast(Depth,
llvm::Type::getInt32Ty(VMContext),
false, "tmp");
Value *F = CGM.getIntrinsic(Intrinsic::returnaddress, 0, 0); Value *F = CGM.getIntrinsic(Intrinsic::returnaddress, 0, 0);
return RValue::get(Builder.CreateCall(F, EmitScalarExpr(E->getArg(0)))); return RValue::get(Builder.CreateCall(F, Depth));
} }
case Builtin::BI__builtin_frame_address: { case Builtin::BI__builtin_frame_address: {
Value *Depth = EmitScalarExpr(E->getArg(0));
Depth = Builder.CreateIntCast(Depth,
llvm::Type::getInt32Ty(VMContext),
false, "tmp");
Value *F = CGM.getIntrinsic(Intrinsic::frameaddress, 0, 0); Value *F = CGM.getIntrinsic(Intrinsic::frameaddress, 0, 0);
return RValue::get(Builder.CreateCall(F, EmitScalarExpr(E->getArg(0)))); return RValue::get(Builder.CreateCall(F, Depth));
} }
case Builtin::BI__builtin_extract_return_addr: { case Builtin::BI__builtin_extract_return_addr: {
// FIXME: There should be a target hook for this // FIXME: There should be a target hook for this