Implement codegen for ordered comparison builtins.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45243 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/CodeGen/CGBuiltin.cpp b/CodeGen/CGBuiltin.cpp
index cc6d03f..ec6c2b9 100644
--- a/CodeGen/CGBuiltin.cpp
+++ b/CodeGen/CGBuiltin.cpp
@@ -166,6 +166,42 @@
APFloat f(APFloat::IEEEdouble, APFloat::fcInfinity, false);
return RValue::get(ConstantFP::get(llvm::Type::DoubleTy, f));
}
+ case Builtin::BI__builtin_isgreater:
+ case Builtin::BI__builtin_isgreaterequal:
+ case Builtin::BI__builtin_isless:
+ case Builtin::BI__builtin_islessequal:
+ case Builtin::BI__builtin_islessgreater:
+ case Builtin::BI__builtin_isunordered: {
+ // Ordered comparisons: we know the arguments to these are matching scalar
+ // floating point values.
+ Value *LHS = EmitScalarExpr(E->getArg(0));
+ Value *RHS = EmitScalarExpr(E->getArg(1));
+
+ switch (BuiltinID) {
+ default: assert(0 && "Unknown ordered comparison");
+ case Builtin::BI__builtin_isgreater:
+ LHS = Builder.CreateFCmpOGT(LHS, RHS, "cmp");
+ break;
+ case Builtin::BI__builtin_isgreaterequal:
+ LHS = Builder.CreateFCmpOGE(LHS, RHS, "cmp");
+ break;
+ case Builtin::BI__builtin_isless:
+ LHS = Builder.CreateFCmpOLT(LHS, RHS, "cmp");
+ break;
+ case Builtin::BI__builtin_islessequal:
+ LHS = Builder.CreateFCmpOLE(LHS, RHS, "cmp");
+ break;
+ case Builtin::BI__builtin_islessgreater:
+ LHS = Builder.CreateFCmpONE(LHS, RHS, "cmp");
+ break;
+ case Builtin::BI__builtin_isunordered:
+ LHS = Builder.CreateFCmpUNO(LHS, RHS, "cmp");
+ break;
+ }
+ // ZExt bool to int type.
+ return RValue::get(Builder.CreateZExt(LHS, ConvertType(E->getType()),
+ "tmp"));
+ }
}
return RValue::get(0);
}