[clang] [llvm] Clang: Add nsz to llvm.minnum and llvm.maxnum emitted from fmin and fmax (PR #113133)

[YunQiang Su via llvm-commits]

================
@@ -4002,8 +4012,11 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
       Result = Builder.CreateBinaryIntrinsic(
           Ty->isSignedIntegerType() ? Intrinsic::smin : Intrinsic::umin, Op0,
           Op1, nullptr, "elt.min");
-    } else
-      Result = Builder.CreateMinNum(Op0, Op1, /*FMFSource=*/nullptr, "elt.min");
+    } else {
+      FastMathFlags FMF;
+      FMF.setNoSignedZeros(true);
----------------
wzssyqa wrote:

You can notice that we have already:
```
__builtin_elementwise_maximum
__builtin_elementwise_minimum
```
before https://github.com/llvm/llvm-project/pull/129207
And with https://github.com/llvm/llvm-project/pull/129207
we introduce
```
__builtin_elementwise_maxnum
__builtin_elementwise_minnum
```
So in the best, we should keep the name scheme: not prefix `f`.

https://github.com/llvm/llvm-project/pull/113133