IRBuilder: Add FMFSource parameter to CreateMaxNum/CreateMinNum (#129173)

In llvm/llvm-project#112852, we claimed that
llvm.minnum and llvm.maxnum should treat +0.0>-0.0, while libc doesn't
require fmin(3)/fmax(3) for it.

Let's add FMFSource parameter to CreateMaxNum and CreateMinNum, so that
they can be used by CodeGenFunction::EmitBuiltinExpr of Clang.

Author: wzssyqa

clang/lib/CodeGen/CGBuiltin.cpp

@@ -4378,7 +4378,7 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
                                                  : llvm::Intrinsic::umax,
                                              Op0, Op1, nullptr, "elt.max");
     } else
-      Result = Builder.CreateMaxNum(Op0, Op1, "elt.max");
+      Result = Builder.CreateMaxNum(Op0, Op1, /*FMFSource=*/nullptr, "elt.max");
     return RValue::get(Result);
   }
   case Builtin::BI__builtin_elementwise_min: {
@@ -4394,7 +4394,7 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
                                                  : llvm::Intrinsic::umin,
                                              Op0, Op1, nullptr, "elt.min");
     } else
-      Result = Builder.CreateMinNum(Op0, Op1, "elt.min");
+      Result = Builder.CreateMinNum(Op0, Op1, /*FMFSource=*/nullptr, "elt.min");
     return RValue::get(Result);
   }
 

llvm/include/llvm/IR/IRBuilder.h

@@ -1005,23 +1005,27 @@ class IRBuilderBase {
                             const Twine &Name = "");
 
   /// Create call to the minnum intrinsic.
-  Value *CreateMinNum(Value *LHS, Value *RHS, const Twine &Name = "") {
+  Value *CreateMinNum(Value *LHS, Value *RHS, FMFSource FMFSource = {},
+                      const Twine &Name = "") {
     if (IsFPConstrained) {
       return CreateConstrainedFPUnroundedBinOp(
-          Intrinsic::experimental_constrained_minnum, LHS, RHS, nullptr, Name);
+          Intrinsic::experimental_constrained_minnum, LHS, RHS, FMFSource,
+          Name);
     }
 
-    return CreateBinaryIntrinsic(Intrinsic::minnum, LHS, RHS, nullptr, Name);
+    return CreateBinaryIntrinsic(Intrinsic::minnum, LHS, RHS, FMFSource, Name);
   }
 
   /// Create call to the maxnum intrinsic.
-  Value *CreateMaxNum(Value *LHS, Value *RHS, const Twine &Name = "") {
+  Value *CreateMaxNum(Value *LHS, Value *RHS, FMFSource FMFSource = {},
+                      const Twine &Name = "") {
     if (IsFPConstrained) {
       return CreateConstrainedFPUnroundedBinOp(
-          Intrinsic::experimental_constrained_maxnum, LHS, RHS, nullptr, Name);
+          Intrinsic::experimental_constrained_maxnum, LHS, RHS, FMFSource,
+          Name);
     }
 
-    return CreateBinaryIntrinsic(Intrinsic::maxnum, LHS, RHS, nullptr, Name);
+    return CreateBinaryIntrinsic(Intrinsic::maxnum, LHS, RHS, FMFSource, Name);
   }
 
   /// Create call to the minimum intrinsic.