[clang] [llvm] [HLSL] implement `mad` intrinsic (PR #83826)

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<!--LLVM CODE FORMAT COMMENT: {clang-format}-->


:warning: C/C++ code formatter, clang-format found issues in your code. :warning:

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``````````bash
git-clang-format --diff e6e53ca8470d719882539359ebe3ad8b442a8cb0 410a00aa96f23e99727b2d6b8aa0fa02441d5ecc -- clang/include/clang/Sema/Sema.h clang/lib/CodeGen/CGBuiltin.cpp clang/lib/Headers/hlsl/hlsl_intrinsics.h clang/lib/Sema/SemaChecking.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index 88be7dd90d..f44ded4481 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -14132,7 +14132,8 @@ private:
   bool SemaBuiltinVectorMath(CallExpr *TheCall, QualType &Res);
   bool SemaBuiltinVectorToScalarMath(CallExpr *TheCall);
   bool SemaBuiltinElementwiseMath(CallExpr *TheCall);
-  bool SemaBuiltinElementwiseTernaryMath(CallExpr *TheCall, bool enforceFloatingPointCheck = true);
+  bool SemaBuiltinElementwiseTernaryMath(CallExpr *TheCall,
+                                         bool enforceFloatingPointCheck = true);
   bool PrepareBuiltinElementwiseMathOneArgCall(CallExpr *TheCall);
   bool PrepareBuiltinReduceMathOneArgCall(CallExpr *TheCall);
 
diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 795d59ed5f..f5f6617fb2 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -19808,7 +19808,8 @@ bool Sema::SemaBuiltinVectorMath(CallExpr *TheCall, QualType &Res) {
   return false;
 }
 
-bool Sema::SemaBuiltinElementwiseTernaryMath(CallExpr *TheCall, bool enforceFloatingPointCheck) {
+bool Sema::SemaBuiltinElementwiseTernaryMath(CallExpr *TheCall,
+                                             bool enforceFloatingPointCheck) {
   if (checkArgCount(*this, TheCall, 3))
     return true;
 
@@ -19820,11 +19821,11 @@ bool Sema::SemaBuiltinElementwiseTernaryMath(CallExpr *TheCall, bool enforceFloa
     Args[I] = Converted.get();
   }
 
-  if(enforceFloatingPointCheck) {
+  if (enforceFloatingPointCheck) {
     int ArgOrdinal = 1;
     for (Expr *Arg : Args) {
-      if (checkFPMathBuiltinElementType(*this, Arg->getBeginLoc(), Arg->getType(),
-                                        ArgOrdinal++))
+      if (checkFPMathBuiltinElementType(*this, Arg->getBeginLoc(),
+                                        Arg->getType(), ArgOrdinal++))
         return true;
     }
   }

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https://github.com/llvm/llvm-project/pull/83826