[llvm] [llubi] Initial support for floating-point numbers (PR #188453)

[Nikita Popov via llvm-commits]

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@@ -118,6 +118,41 @@ static AnyValue mulNoWrap(const APInt &LHS, const APInt &RHS, bool HasNSW,
   return Res;
 }
 
+static APFloat handleDenormal(APFloat Val,
+                              DenormalMode::DenormalModeKind Mode) {
+  if (!Val.isDenormal())
+    return Val;
+  if (Mode == DenormalMode::PositiveZero)
+    return APFloat::getZero(Val.getSemantics(), false);
+  if (Mode == DenormalMode::PreserveSign)
+    return APFloat::getZero(Val.getSemantics(), Val.isNegative());
+  // Default case for IEEE, Dynamic, and Invalid
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nikic wrote:

Hm, so this effectively treats Dynamic the same as IEEE. I guess this is fine given that we currently don't have a way that llubi supports to switch the mode. I'd make the comment more explicit to that effect though.

https://github.com/llvm/llvm-project/pull/188453