maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Generate code for the various __builtin_ctz functions. 

llvm-svn: 46811
This commit is contained in:
Anders Carlsson 2008-02-06 07:19:27 +00:00
parent 7422bce18a
commit 093f1a099f
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
clang/CodeGen/CGBuiltin.cpp
View File

@ -149,6 +149,20 @@ RValue CodeGenFunction::EmitBuiltinExpr(unsigned BuiltinID, const CallExpr *E) {
return RValue::get(Result);
}
case Builtin::BI__builtin_ctz:
case Builtin::BI__builtin_ctzl:
case Builtin::BI__builtin_ctzll: {
Value *ArgValue = EmitScalarExpr(E->getArg(0));
const llvm::Type *ArgType = ArgValue->getType();
Value *F = CGM.getIntrinsic(Intrinsic::cttz, &ArgType, 1);
const llvm::Type *ResultType = ConvertType(E->getType());
Value *Result = Builder.CreateCall(F, ArgValue, "tmp");
if (Result->getType() != ResultType)
Result = Builder.CreateIntCast(Result, ResultType, "cast");
return RValue::get(Result);
}
case Builtin::BI__builtin_expect:
return RValue::get(EmitScalarExpr(E->getArg(0)));
case Builtin::BI__builtin_bswap32: