Add a target hook for FLT_EVAL_METHOD and use it to set the value on x86 with sse disabled.
x87 math evaluates everything with 80 bits precision, so we have to set FLT_EVAL_METHOD
to "2".
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@147311 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp
index 34258c1..bb1051d 100644
--- a/lib/Basic/Targets.cpp
+++ b/lib/Basic/Targets.cpp
@@ -1339,6 +1339,10 @@
BigEndian = false;
LongDoubleFormat = &llvm::APFloat::x87DoubleExtended;
}
+ virtual unsigned getFloatEvalMethod() const {
+ // X87 evaluates with 80 bits "long double" precision.
+ return SSELevel == NoSSE ? 2 : 0;
+ }
virtual void getTargetBuiltins(const Builtin::Info *&Records,
unsigned &NumRecords) const {
Records = BuiltinInfo;