[clang] [llvm] [LLVM][APFloat] Add APFloat support for 8-bit UE5M3 type (PR #210720)

[Durgadoss R via cfe-commits]

================
@@ -1047,36 +1047,37 @@ TEST(APFloatTest, IsSmallestNormalized) {
       continue;
 
     EXPECT_FALSE(APFloat::getZero(Semantics, false).isSmallestNormalized());
-    EXPECT_FALSE(APFloat::getZero(Semantics, true).isSmallestNormalized());
+    if (Semantics.hasSignedRepr)
+      EXPECT_FALSE(APFloat::getZero(Semantics, true).isSmallestNormalized());
 
     if (APFloat::semanticsHasNaN(Semantics)) {
       // Types that do not support Inf will return NaN when asked for Inf.
       // (But only if they support NaN.)
       EXPECT_FALSE(APFloat::getInf(Semantics, false).isSmallestNormalized());
-      EXPECT_FALSE(APFloat::getInf(Semantics, true).isSmallestNormalized());
+      if (Semantics.hasSignedRepr)
+        EXPECT_FALSE(APFloat::getInf(Semantics, true).isSmallestNormalized());
 
       EXPECT_FALSE(APFloat::getQNaN(Semantics).isSmallestNormalized());
       EXPECT_FALSE(APFloat::getSNaN(Semantics).isSmallestNormalized());
     }
 
-    EXPECT_FALSE(APFloat::getLargest(Semantics).isSmallestNormalized());
-    EXPECT_FALSE(APFloat::getLargest(Semantics, true).isSmallestNormalized());
+    EXPECT_FALSE(APFloat::getLargest(Semantics, false).isSmallestNormalized());
+    if (Semantics.hasSignedRepr)
+      EXPECT_FALSE(APFloat::getLargest(Semantics, true).isSmallestNormalized());
 
-    EXPECT_FALSE(APFloat::getSmallest(Semantics).isSmallestNormalized());
-    EXPECT_FALSE(APFloat::getSmallest(Semantics, true).isSmallestNormalized());
+    EXPECT_FALSE(APFloat::getSmallest(Semantics, false).isSmallestNormalized());
+    if (Semantics.hasSignedRepr)
+      EXPECT_FALSE(
+          APFloat::getSmallest(Semantics, true).isSmallestNormalized());
 
     EXPECT_FALSE(APFloat::getAllOnesValue(Semantics).isSmallestNormalized());
 
     APFloat PosSmallestNormalized =
         APFloat::getSmallestNormalized(Semantics, false);
-    APFloat NegSmallestNormalized =
-        APFloat::getSmallestNormalized(Semantics, true);
     EXPECT_TRUE(PosSmallestNormalized.isSmallestNormalized());
-    EXPECT_TRUE(NegSmallestNormalized.isSmallestNormalized());
     EXPECT_EQ(fcPosNormal, PosSmallestNormalized.classify());
-    EXPECT_EQ(fcNegNormal, NegSmallestNormalized.classify());
 
-    for (APFloat *Val : {&PosSmallestNormalized, &NegSmallestNormalized}) {
----------------
durga4github wrote:

nit:
would initializing the list with Neg only for SignedRep will reduce the amount of diff here?
something like this:

```
  SmallVector<APFloat *> Vals = {&PosSmallestNormalized};
  
  if (Semantics.hasSignedRepr) {
    Init - NegSmallestNormalized();
    EXPECT_TRUE(NegSmallestNormalized->isSmallestNormalized());
    EXPECT_EQ(fcNegNormal, NegSmallestNormalized->classify());

    Vals.push_back(&*NegSmallestNormalized);
  }

  for (APFloat *Val : Vals) {
    // original loop body unchanged
  }
```


https://github.com/llvm/llvm-project/pull/210720