CodeGen: Cast llvm.flt.rounds result to match __builtin_flt_rounds
llvm.flt.rounds returns an i32, but the builtin expects an integer.
On targets where integers are not 32-bits clang tries to bitcast the result, causing an assertion failure.
The patch enables newlib build for msp430.
Patch by Edward Jones!
Differential Revision: https://reviews.llvm.org/D24461
llvm-svn: 351449
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 34bf194..6954d32 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -2130,6 +2130,17 @@
return RValue::get(Builder.CreateZExt(V, ConvertType(E->getType())));
}
+ case Builtin::BI__builtin_flt_rounds: {
+ Value *F = CGM.getIntrinsic(Intrinsic::flt_rounds);
+
+ llvm::Type *ResultType = ConvertType(E->getType());
+ Value *Result = Builder.CreateCall(F);
+ if (Result->getType() != ResultType)
+ Result = Builder.CreateIntCast(Result, ResultType, /*isSigned*/true,
+ "cast");
+ return RValue::get(Result);
+ }
+
case Builtin::BI__builtin_fpclassify: {
Value *V = EmitScalarExpr(E->getArg(5));
llvm::Type *Ty = ConvertType(E->getArg(5)->getType());