Implement nans, prefetch, and trap builtins.
This closes <rdar://problem/6080720>, support for __builtin_constant_p
has been filed separately.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@53885 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 1fc568e..87d09a9 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -190,7 +190,6 @@
Result = Builder.CreateIntCast(Result, ResultType, "cast");
return RValue::get(Result);
}
-
case Builtin::BI__builtin_expect:
// FIXME: pass expect through to LLVM
return RValue::get(EmitScalarExpr(E->getArg(0)));
@@ -200,7 +199,22 @@
const llvm::Type *ArgType = ArgValue->getType();
Value *F = CGM.getIntrinsic(Intrinsic::bswap, &ArgType, 1);
return RValue::get(Builder.CreateCall(F, ArgValue, "tmp"));
+ }
+ case Builtin::BI__builtin_prefetch: {
+ Value *Locality, *RW, *Address = EmitScalarExpr(E->getArg(0));
+ // FIXME: Technically these constants should of type 'int', yes?
+ RW = (E->getNumArgs() > 1) ? EmitScalarExpr(E->getArg(1)) :
+ ConstantInt::get(llvm::Type::Int32Ty, 0);
+ Locality = (E->getNumArgs() > 2) ? EmitScalarExpr(E->getArg(2)) :
+ ConstantInt::get(llvm::Type::Int32Ty, 3);
+ Value *F = CGM.getIntrinsic(Intrinsic::prefetch, 0, 0);
+ return RValue::get(Builder.CreateCall3(F, Address, RW, Locality));
}
+ case Builtin::BI__builtin_trap: {
+ Value *F = CGM.getIntrinsic(Intrinsic::trap, 0, 0);
+ return RValue::get(Builder.CreateCall(F));
+ }
+
case Builtin::BI__builtin_huge_val:
case Builtin::BI__builtin_huge_valf:
case Builtin::BI__builtin_huge_vall: