[clang] 489eadd - [HLSL] Implementation of the frac intrinsic (#83315)

via cfe-commits cfe-commits at lists.llvm.org
Thu Feb 29 10:40:43 PST 2024


Author: Farzon Lotfi
Date: 2024-02-29T10:40:38-08:00
New Revision: 489eadd142e858dc28e375320da774eba53d21bb

URL: https://github.com/llvm/llvm-project/commit/489eadd142e858dc28e375320da774eba53d21bb
DIFF: https://github.com/llvm/llvm-project/commit/489eadd142e858dc28e375320da774eba53d21bb.diff

LOG: [HLSL] Implementation of the frac intrinsic (#83315)

This change implements the frontend  for #70099
Builtins.td           - add the frac builtin
CGBuiltin.cpp         - add the builtin to DirectX intrinsic mapping
hlsl_intrinsics.h     - add the frac api
SemaChecking.cpp      - add type checks for builtin
IntrinsicsDirectX.td  - add the frac intrinsic

The backend changes for this are going to be very simple:
https://github.com/llvm/llvm-project/commit/f309a0eb558b65dfaff0d1d23b7d07fb07e27121

They were not included because llvm/lib/Target/DirectX/DXIL.td is going
through a major refactor.

Added: 
    clang/test/CodeGenHLSL/builtins/frac.hlsl
    clang/test/SemaHLSL/BuiltIns/frac-errors.hlsl

Modified: 
    clang/include/clang/Basic/Builtins.td
    clang/include/clang/Basic/DiagnosticSemaKinds.td
    clang/lib/CodeGen/CGBuiltin.cpp
    clang/lib/Headers/hlsl/hlsl_intrinsics.h
    clang/lib/Sema/SemaChecking.cpp
    clang/test/CodeGenHLSL/builtins/dot.hlsl
    clang/test/CodeGenHLSL/builtins/lerp.hlsl
    clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl
    clang/test/SemaHLSL/BuiltIns/lerp-errors.hlsl
    clang/test/SemaHLSL/OverloadResolutionBugs.hlsl
    llvm/include/llvm/IR/IntrinsicsDirectX.td

Removed: 
    


################################################################################
diff  --git a/clang/include/clang/Basic/Builtins.td b/clang/include/clang/Basic/Builtins.td
index 36151b49d9363d..2c83dca248fb7d 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -4536,6 +4536,12 @@ def HLSLDotProduct : LangBuiltin<"HLSL_LANG"> {
   let Prototype = "void(...)";
 }
 
+def HLSLFrac : LangBuiltin<"HLSL_LANG"> {
+  let Spellings = ["__builtin_hlsl_elementwise_frac"];
+  let Attributes = [NoThrow, Const];
+  let Prototype = "void(...)";
+}
+
 def HLSLLerp : LangBuiltin<"HLSL_LANG"> {
   let Spellings = ["__builtin_hlsl_lerp"];
   let Attributes = [NoThrow, Const];

diff  --git a/clang/include/clang/Basic/DiagnosticSemaKinds.td b/clang/include/clang/Basic/DiagnosticSemaKinds.td
index 4ef3ac8c96cd26..4f8902e37bd3bb 100644
--- a/clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ b/clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -10270,7 +10270,7 @@ def err_vec_builtin_non_vector_all : Error<
  "all arguments to %0 must be vectors">;
 def err_vec_builtin_incompatible_vector_all : Error<
   "all arguments to %0 must have vectors of the same type">;
-  
+
 def err_vec_builtin_non_vector : Error<
  "first two arguments to %0 must be vectors">;
 def err_vec_builtin_incompatible_vector : Error<

diff  --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 74ca96117793c4..98684448f4ff5c 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -18020,14 +18020,7 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
         V = Builder.CreateFMul(S, V);
         return Builder.CreateFAdd(X, V, "dx.lerp");
       }
-      // DXC does this via casting to float should we do the same thing?
-      if (Xty->isIntegerTy()) {
-        auto V = Builder.CreateSub(Y, X);
-        V = Builder.CreateMul(S, V);
-        return Builder.CreateAdd(X, V, "dx.lerp");
-      }
-      // Bools should have been promoted
-      llvm_unreachable("Scalar Lerp is only supported on ints and floats.");
+      llvm_unreachable("Scalar Lerp is only supported on floats.");
     }
     // A VectorSplat should have happened
     assert(Xty->isVectorTy() && Yty->isVectorTy() && Sty->isVectorTy() &&
@@ -18041,12 +18034,24 @@ Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
         E->getArg(2)->getType()->getAs<VectorType>();
     // A HLSLVectorTruncation should have happend
     assert(XVecTy->getNumElements() == YVecTy->getNumElements() &&
-           SVecTy->getNumElements() &&
+           XVecTy->getNumElements() == SVecTy->getNumElements() &&
            "Lerp requires vectors to be of the same size.");
+    assert(XVecTy->getElementType()->isRealFloatingType() &&
+           XVecTy->getElementType() == YVecTy->getElementType() &&
+           XVecTy->getElementType() == SVecTy->getElementType() &&
+           "Lerp requires float vectors to be of the same type.");
     return Builder.CreateIntrinsic(
         /*ReturnType*/ Xty, Intrinsic::dx_lerp, ArrayRef<Value *>{X, Y, S},
         nullptr, "dx.lerp");
   }
+  case Builtin::BI__builtin_hlsl_elementwise_frac: {
+    Value *Op0 = EmitScalarExpr(E->getArg(0));
+    if (!E->getArg(0)->getType()->hasFloatingRepresentation())
+      llvm_unreachable("frac operand must have a float representation");
+    return Builder.CreateIntrinsic(
+        /*ReturnType*/ Op0->getType(), Intrinsic::dx_frac,
+        ArrayRef<Value *>{Op0}, nullptr, "dx.frac");
+  }
   }
   return nullptr;
 }

diff  --git a/clang/lib/Headers/hlsl/hlsl_intrinsics.h b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
index 1314bdefa37e7b..0aa8651ba80dc4 100644
--- a/clang/lib/Headers/hlsl/hlsl_intrinsics.h
+++ b/clang/lib/Headers/hlsl/hlsl_intrinsics.h
@@ -317,6 +317,38 @@ double3 floor(double3);
 _HLSL_BUILTIN_ALIAS(__builtin_elementwise_floor)
 double4 floor(double4);
 
+//===----------------------------------------------------------------------===//
+// frac builtins
+//===----------------------------------------------------------------------===//
+
+/// \fn T frac(T x)
+/// \brief Returns the fractional (or decimal) part of x. \a x parameter.
+/// \param x The specified input value.
+///
+/// If \a the return value is greater than or equal to 0 and less than 1.
+
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_frac)
+half frac(half);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_frac)
+half2 frac(half2);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_frac)
+half3 frac(half3);
+_HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_frac)
+half4 frac(half4);
+
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_frac)
+float frac(float);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_frac)
+float2 frac(float2);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_frac)
+float3 frac(float3);
+_HLSL_BUILTIN_ALIAS(__builtin_hlsl_elementwise_frac)
+float4 frac(float4);
+
 //===----------------------------------------------------------------------===//
 // lerp builtins
 //===----------------------------------------------------------------------===//

diff  --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
index 016e9830662042..690bdaa63d058b 100644
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -5246,6 +5246,23 @@ bool CheckVectorElementCallArgs(Sema *S, CallExpr *TheCall) {
   return true;
 }
 
+bool CheckAllArgsHaveFloatRepresentation(Sema *S, CallExpr *TheCall) {
+  QualType ExpectedType = S->Context.FloatTy;
+  for (unsigned i = 0; i < TheCall->getNumArgs(); ++i) {
+    QualType PassedType = TheCall->getArg(i)->getType();
+    if (!PassedType->hasFloatingRepresentation()) {
+      if (auto *VecTyA = PassedType->getAs<VectorType>())
+        ExpectedType = S->Context.getVectorType(
+            ExpectedType, VecTyA->getNumElements(), VecTyA->getVectorKind());
+      S->Diag(TheCall->getArg(0)->getBeginLoc(),
+              diag::err_typecheck_convert_incompatible)
+          << PassedType << ExpectedType << 1 << 0 << 0;
+      return true;
+    }
+  }
+  return false;
+}
+
 // Note: returning true in this case results in CheckBuiltinFunctionCall
 // returning an ExprError
 bool Sema::CheckHLSLBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
@@ -5259,6 +5276,13 @@ bool Sema::CheckHLSLBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
       return true;
     break;
   }
+  case Builtin::BI__builtin_hlsl_elementwise_frac: {
+    if (PrepareBuiltinElementwiseMathOneArgCall(TheCall))
+      return true;
+    if (CheckAllArgsHaveFloatRepresentation(this, TheCall))
+      return true;
+    break;
+  }
   case Builtin::BI__builtin_hlsl_lerp: {
     if (checkArgCount(*this, TheCall, 3))
       return true;
@@ -5266,6 +5290,8 @@ bool Sema::CheckHLSLBuiltinFunctionCall(unsigned BuiltinID, CallExpr *TheCall) {
       return true;
     if (SemaBuiltinElementwiseTernaryMath(TheCall))
       return true;
+    if (CheckAllArgsHaveFloatRepresentation(this, TheCall))
+      return true;
     break;
   }
   }

diff  --git a/clang/test/CodeGenHLSL/builtins/dot.hlsl b/clang/test/CodeGenHLSL/builtins/dot.hlsl
index b2c1bae31d13b1..c064d118caf3e7 100644
--- a/clang/test/CodeGenHLSL/builtins/dot.hlsl
+++ b/clang/test/CodeGenHLSL/builtins/dot.hlsl
@@ -9,230 +9,160 @@
 #ifdef __HLSL_ENABLE_16_BIT
 // NATIVE_HALF: %dx.dot = mul i16 %0, %1
 // NATIVE_HALF: ret i16 %dx.dot
-int16_t test_dot_short ( int16_t p0, int16_t p1 ) {
-  return dot ( p0, p1 );
-}
+int16_t test_dot_short(int16_t p0, int16_t p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call i16 @llvm.dx.dot.v2i16(<2 x i16> %0, <2 x i16> %1)
 // NATIVE_HALF: ret i16 %dx.dot
-int16_t test_dot_short2 ( int16_t2 p0, int16_t2 p1 ) {
-  return dot ( p0, p1 );
-}
+int16_t test_dot_short2(int16_t2 p0, int16_t2 p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call i16 @llvm.dx.dot.v3i16(<3 x i16> %0, <3 x i16> %1)
 // NATIVE_HALF: ret i16 %dx.dot
-int16_t test_dot_short3 ( int16_t3 p0, int16_t3 p1 ) {
-  return dot ( p0, p1 );
-}
+int16_t test_dot_short3(int16_t3 p0, int16_t3 p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call i16 @llvm.dx.dot.v4i16(<4 x i16> %0, <4 x i16> %1)
 // NATIVE_HALF: ret i16 %dx.dot
-int16_t test_dot_short4 ( int16_t4 p0, int16_t4 p1 ) {
-  return dot ( p0, p1 );
-}
+int16_t test_dot_short4(int16_t4 p0, int16_t4 p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = mul i16 %0, %1
 // NATIVE_HALF: ret i16 %dx.dot
-uint16_t test_dot_ushort ( uint16_t p0, uint16_t p1 ) {
-  return dot ( p0, p1 );
-}
+uint16_t test_dot_ushort(uint16_t p0, uint16_t p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call i16 @llvm.dx.dot.v2i16(<2 x i16> %0, <2 x i16> %1)
 // NATIVE_HALF: ret i16 %dx.dot
-uint16_t test_dot_ushort2 ( uint16_t2 p0, uint16_t2 p1 ) {
-  return dot ( p0, p1 );
-}
+uint16_t test_dot_ushort2(uint16_t2 p0, uint16_t2 p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call i16 @llvm.dx.dot.v3i16(<3 x i16> %0, <3 x i16> %1)
 // NATIVE_HALF: ret i16 %dx.dot
-uint16_t test_dot_ushort3 ( uint16_t3 p0, uint16_t3 p1 ) {
-  return dot ( p0, p1 );
-}
+uint16_t test_dot_ushort3(uint16_t3 p0, uint16_t3 p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call i16 @llvm.dx.dot.v4i16(<4 x i16> %0, <4 x i16> %1)
 // NATIVE_HALF: ret i16 %dx.dot
-uint16_t test_dot_ushort4 ( uint16_t4 p0, uint16_t4 p1 ) {
-  return dot ( p0, p1 );
-}
+uint16_t test_dot_ushort4(uint16_t4 p0, uint16_t4 p1) { return dot(p0, p1); }
 #endif
 
 // CHECK: %dx.dot = mul i32 %0, %1
 // CHECK: ret i32 %dx.dot
-int test_dot_int ( int p0, int p1 ) {
-  return dot ( p0, p1 );
-}
+int test_dot_int(int p0, int p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i32 @llvm.dx.dot.v2i32(<2 x i32> %0, <2 x i32> %1)
 // CHECK: ret i32 %dx.dot
-int test_dot_int2 ( int2 p0, int2 p1 ) {
-  return dot ( p0, p1 );
-}
+int test_dot_int2(int2 p0, int2 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i32 @llvm.dx.dot.v3i32(<3 x i32> %0, <3 x i32> %1)
 // CHECK: ret i32 %dx.dot
-int test_dot_int3 ( int3 p0, int3 p1 ) {
-  return dot ( p0, p1 );
-}
+int test_dot_int3(int3 p0, int3 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i32 @llvm.dx.dot.v4i32(<4 x i32> %0, <4 x i32> %1)
 // CHECK: ret i32 %dx.dot
-int test_dot_int4 ( int4 p0, int4 p1 ) {
-  return dot ( p0, p1 );
-}
+int test_dot_int4(int4 p0, int4 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = mul i32 %0, %1
 // CHECK: ret i32 %dx.dot
-uint test_dot_uint ( uint p0, uint p1 ) {
-  return dot ( p0, p1 );
-}
+uint test_dot_uint(uint p0, uint p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i32 @llvm.dx.dot.v2i32(<2 x i32> %0, <2 x i32> %1)
 // CHECK: ret i32 %dx.dot
-uint test_dot_uint2 ( uint2 p0, uint2 p1 ) {
-  return dot ( p0, p1 );
-}
+uint test_dot_uint2(uint2 p0, uint2 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i32 @llvm.dx.dot.v3i32(<3 x i32> %0, <3 x i32> %1)
 // CHECK: ret i32 %dx.dot
-uint test_dot_uint3 ( uint3 p0, uint3 p1 ) {
-  return dot ( p0, p1 );
-}
+uint test_dot_uint3(uint3 p0, uint3 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i32 @llvm.dx.dot.v4i32(<4 x i32> %0, <4 x i32> %1)
 // CHECK: ret i32 %dx.dot
-uint test_dot_uint4 ( uint4 p0, uint4 p1 ) {
-  return dot ( p0, p1 );
-}
+uint test_dot_uint4(uint4 p0, uint4 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = mul i64 %0, %1
 // CHECK: ret i64 %dx.dot
-int64_t test_dot_long ( int64_t p0, int64_t p1 ) {
-  return dot ( p0, p1 );
-}
+int64_t test_dot_long(int64_t p0, int64_t p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i64 @llvm.dx.dot.v2i64(<2 x i64> %0, <2 x i64> %1)
 // CHECK: ret i64 %dx.dot
-int64_t test_dot_long2 ( int64_t2 p0, int64_t2 p1 ) {
-  return dot ( p0, p1 );
-}
+int64_t test_dot_long2(int64_t2 p0, int64_t2 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i64 @llvm.dx.dot.v3i64(<3 x i64> %0, <3 x i64> %1)
 // CHECK: ret i64 %dx.dot
-int64_t test_dot_long3 ( int64_t3 p0, int64_t3 p1 ) {
-  return dot ( p0, p1 );
-}
+int64_t test_dot_long3(int64_t3 p0, int64_t3 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i64 @llvm.dx.dot.v4i64(<4 x i64> %0, <4 x i64> %1)
 // CHECK: ret i64 %dx.dot
-int64_t test_dot_long4 ( int64_t4 p0, int64_t4 p1 ) {
-  return dot ( p0, p1 );
-}
+int64_t test_dot_long4(int64_t4 p0, int64_t4 p1) { return dot(p0, p1); }
 
 // CHECK:  %dx.dot = mul i64 %0, %1
 // CHECK: ret i64 %dx.dot
-uint64_t test_dot_ulong ( uint64_t p0, uint64_t p1 ) {
-  return dot ( p0, p1 );
-}
+uint64_t test_dot_ulong(uint64_t p0, uint64_t p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i64 @llvm.dx.dot.v2i64(<2 x i64> %0, <2 x i64> %1)
 // CHECK: ret i64 %dx.dot
-uint64_t test_dot_ulong2 ( uint64_t2 p0, uint64_t2 p1 ) {
-  return dot ( p0, p1 );
-}
+uint64_t test_dot_ulong2(uint64_t2 p0, uint64_t2 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i64 @llvm.dx.dot.v3i64(<3 x i64> %0, <3 x i64> %1)
 // CHECK: ret i64 %dx.dot
-uint64_t test_dot_ulong3 ( uint64_t3 p0, uint64_t3 p1 ) {
-  return dot ( p0, p1 );
-}
+uint64_t test_dot_ulong3(uint64_t3 p0, uint64_t3 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call i64 @llvm.dx.dot.v4i64(<4 x i64> %0, <4 x i64> %1)
 // CHECK: ret i64 %dx.dot
-uint64_t test_dot_ulong4 ( uint64_t4 p0, uint64_t4 p1 ) {
-  return dot ( p0, p1 );
-}
+uint64_t test_dot_ulong4(uint64_t4 p0, uint64_t4 p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = fmul half %0, %1
 // NATIVE_HALF: ret half %dx.dot
 // NO_HALF: %dx.dot = fmul float %0, %1
 // NO_HALF: ret float %dx.dot
-half test_dot_half ( half p0, half p1 ) {
-  return dot ( p0, p1 );
-}
+half test_dot_half(half p0, half p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call half @llvm.dx.dot.v2f16(<2 x half> %0, <2 x half> %1)
 // NATIVE_HALF: ret half %dx.dot
 // NO_HALF: %dx.dot = call float @llvm.dx.dot.v2f32(<2 x float> %0, <2 x float> %1)
 // NO_HALF: ret float %dx.dot
-half test_dot_half2 ( half2 p0, half2 p1 ) {
-  return dot ( p0, p1 );
-}
+half test_dot_half2(half2 p0, half2 p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call half @llvm.dx.dot.v3f16(<3 x half> %0, <3 x half> %1)
 // NATIVE_HALF: ret half %dx.dot
 // NO_HALF: %dx.dot = call float @llvm.dx.dot.v3f32(<3 x float> %0, <3 x float> %1)
 // NO_HALF: ret float %dx.dot
-half test_dot_half3 ( half3 p0, half3 p1 ) {
-  return dot ( p0, p1 );
-}
+half test_dot_half3(half3 p0, half3 p1) { return dot(p0, p1); }
 
 // NATIVE_HALF: %dx.dot = call half @llvm.dx.dot.v4f16(<4 x half> %0, <4 x half> %1)
 // NATIVE_HALF: ret half %dx.dot
 // NO_HALF: %dx.dot = call float @llvm.dx.dot.v4f32(<4 x float> %0, <4 x float> %1)
 // NO_HALF: ret float %dx.dot
-half test_dot_half4 ( half4 p0, half4 p1 ) {
-  return dot ( p0, p1 );
-}
+half test_dot_half4(half4 p0, half4 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = fmul float %0, %1
 // CHECK: ret float %dx.dot
-float test_dot_float ( float p0, float p1 ) {
-  return dot ( p0, p1 );
-}
+float test_dot_float(float p0, float p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call float @llvm.dx.dot.v2f32(<2 x float> %0, <2 x float> %1)
 // CHECK: ret float %dx.dot
-float test_dot_float2 ( float2 p0, float2 p1 ) {
-  return dot ( p0, p1 );
-}
+float test_dot_float2(float2 p0, float2 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call float @llvm.dx.dot.v3f32(<3 x float> %0, <3 x float> %1)
 // CHECK: ret float %dx.dot
-float test_dot_float3 ( float3 p0, float3 p1 ) {
-  return dot ( p0, p1 );
-}
+float test_dot_float3(float3 p0, float3 p1) { return dot(p0, p1); }
 
 // CHECK: %dx.dot = call float @llvm.dx.dot.v4f32(<4 x float> %0, <4 x float> %1)
 // CHECK: ret float %dx.dot
-float test_dot_float4 ( float4 p0, float4 p1) {
-  return dot ( p0, p1 );
-}
+float test_dot_float4(float4 p0, float4 p1) { return dot(p0, p1); }
 
 // CHECK:  %dx.dot = call float @llvm.dx.dot.v2f32(<2 x float> %splat.splat, <2 x float> %1)
 // CHECK: ret float %dx.dot
-float test_dot_float2_splat ( float p0, float2 p1 ) {
-  return dot( p0, p1 );
-}
+float test_dot_float2_splat(float p0, float2 p1) { return dot(p0, p1); }
 
 // CHECK:  %dx.dot = call float @llvm.dx.dot.v3f32(<3 x float> %splat.splat, <3 x float> %1)
 // CHECK: ret float %dx.dot
-float test_dot_float3_splat ( float p0, float3 p1 ) {
-  return dot( p0, p1 );
-}
+float test_dot_float3_splat(float p0, float3 p1) { return dot(p0, p1); }
 
 // CHECK:  %dx.dot = call float @llvm.dx.dot.v4f32(<4 x float> %splat.splat, <4 x float> %1)
 // CHECK: ret float %dx.dot
-float test_dot_float4_splat ( float p0, float4 p1 ) {
-  return dot( p0, p1 );
-}
+float test_dot_float4_splat(float p0, float4 p1) { return dot(p0, p1); }
 
 // CHECK: %conv = sitofp i32 %1 to float
 // CHECK: %splat.splatinsert = insertelement <2 x float> poison, float %conv, i64 0
 // CHECK: %splat.splat = shufflevector <2 x float> %splat.splatinsert, <2 x float> poison, <2 x i32> zeroinitializer
 // CHECK: %dx.dot = call float @llvm.dx.dot.v2f32(<2 x float> %0, <2 x float> %splat.splat)
 // CHECK: ret float %dx.dot
-float test_builtin_dot_float2_int_splat ( float2 p0, int p1 ) {
-  return dot ( p0, p1 );
+float test_builtin_dot_float2_int_splat(float2 p0, int p1) {
+  return dot(p0, p1);
 }
 
 // CHECK: %conv = sitofp i32 %1 to float
@@ -240,26 +170,24 @@ float test_builtin_dot_float2_int_splat ( float2 p0, int p1 ) {
 // CHECK: %splat.splat = shufflevector <3 x float> %splat.splatinsert, <3 x float> poison, <3 x i32> zeroinitializer
 // CHECK: %dx.dot = call float @llvm.dx.dot.v3f32(<3 x float> %0, <3 x float> %splat.splat)
 // CHECK: ret float %dx.dot
-float test_builtin_dot_float3_int_splat ( float3 p0, int p1 ) {
-  return dot ( p0, p1 );
+float test_builtin_dot_float3_int_splat(float3 p0, int p1) {
+  return dot(p0, p1);
 }
 
 // CHECK: %dx.dot = fmul double %0, %1
 // CHECK: ret double %dx.dot
-double test_dot_double ( double p0, double p1 ) {
-  return dot ( p0, p1 );
-}
+double test_dot_double(double p0, double p1) { return dot(p0, p1); }
 
 // CHECK: %conv = zext i1 %tobool to i32
 // CHECK: %dx.dot = mul i32 %conv, %1
 // CHECK: ret i32 %dx.dot
-int test_dot_bool_scalar_arg0_type_promotion ( bool p0, int p1 ) {
-  return dot ( p0, p1 );
+int test_dot_bool_scalar_arg0_type_promotion(bool p0, int p1) {
+  return dot(p0, p1);
 }
 
 // CHECK: %conv = zext i1 %tobool to i32
 // CHECK: %dx.dot = mul i32 %0, %conv
 // CHECK: ret i32 %dx.dot
-int test_dot_bool_scalar_arg1_type_promotion ( int p0, bool p1 ) {
-  return dot ( p0, p1 );
+int test_dot_bool_scalar_arg1_type_promotion(int p0, bool p1) {
+  return dot(p0, p1);
 }

diff  --git a/clang/test/CodeGenHLSL/builtins/frac.hlsl b/clang/test/CodeGenHLSL/builtins/frac.hlsl
new file mode 100644
index 00000000000000..7c4d1468e96d27
--- /dev/null
+++ b/clang/test/CodeGenHLSL/builtins/frac.hlsl
@@ -0,0 +1,53 @@
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN:   dxil-pc-shadermodel6.3-library %s -fnative-half-type \
+// RUN:   -emit-llvm -disable-llvm-passes -o - | FileCheck %s \ 
+// RUN:   --check-prefixes=CHECK,NATIVE_HALF
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN:   dxil-pc-shadermodel6.3-library %s -emit-llvm -disable-llvm-passes \
+// RUN:   -o - | FileCheck %s --check-prefixes=CHECK,NO_HALF
+
+// NATIVE_HALF: define noundef half @
+// NATIVE_HALF: %dx.frac = call half @llvm.dx.frac.f16(
+// NATIVE_HALF: ret half %dx.frac
+// NO_HALF: define noundef float @"?test_frac_half@@YA$halff@$halff@@Z"(
+// NO_HALF: %dx.frac = call float @llvm.dx.frac.f32(
+// NO_HALF: ret float %dx.frac
+half test_frac_half(half p0) { return frac(p0); }
+// NATIVE_HALF: define noundef <2 x half> @
+// NATIVE_HALF: %dx.frac = call <2 x half> @llvm.dx.frac.v2f16
+// NATIVE_HALF: ret <2 x half> %dx.frac
+// NO_HALF: define noundef <2 x float> @
+// NO_HALF: %dx.frac = call <2 x float> @llvm.dx.frac.v2f32(
+// NO_HALF: ret <2 x float> %dx.frac
+half2 test_frac_half2(half2 p0) { return frac(p0); }
+// NATIVE_HALF: define noundef <3 x half> @
+// NATIVE_HALF: %dx.frac = call <3 x half> @llvm.dx.frac.v3f16
+// NATIVE_HALF: ret <3 x half> %dx.frac
+// NO_HALF: define noundef <3 x float> @
+// NO_HALF: %dx.frac = call <3 x float> @llvm.dx.frac.v3f32(
+// NO_HALF: ret <3 x float> %dx.frac
+half3 test_frac_half3(half3 p0) { return frac(p0); }
+// NATIVE_HALF: define noundef <4 x half> @
+// NATIVE_HALF: %dx.frac = call <4 x half> @llvm.dx.frac.v4f16
+// NATIVE_HALF: ret <4 x half> %dx.frac
+// NO_HALF: define noundef <4 x float> @
+// NO_HALF: %dx.frac = call <4 x float> @llvm.dx.frac.v4f32(
+// NO_HALF: ret <4 x float> %dx.frac
+half4 test_frac_half4(half4 p0) { return frac(p0); }
+
+// CHECK: define noundef float @
+// CHECK: %dx.frac = call float @llvm.dx.frac.f32(
+// CHECK: ret float %dx.frac
+float test_frac_float(float p0) { return frac(p0); }
+// CHECK: define noundef <2 x float> @
+// CHECK: %dx.frac = call <2 x float> @llvm.dx.frac.v2f32
+// CHECK: ret <2 x float> %dx.frac
+float2 test_frac_float2(float2 p0) { return frac(p0); }
+// CHECK: define noundef <3 x float> @
+// CHECK: %dx.frac = call <3 x float> @llvm.dx.frac.v3f32
+// CHECK: ret <3 x float> %dx.frac
+float3 test_frac_float3(float3 p0) { return frac(p0); }
+// CHECK: define noundef <4 x float> @
+// CHECK: %dx.frac = call <4 x float> @llvm.dx.frac.v4f32
+// CHECK: ret <4 x float> %dx.frac
+float4 test_frac_float4(float4 p0) { return frac(p0); }

diff  --git a/clang/test/CodeGenHLSL/builtins/lerp.hlsl b/clang/test/CodeGenHLSL/builtins/lerp.hlsl
index 1297f6b85bbd48..a6b3d9643d674c 100644
--- a/clang/test/CodeGenHLSL/builtins/lerp.hlsl
+++ b/clang/test/CodeGenHLSL/builtins/lerp.hlsl
@@ -14,85 +14,63 @@
 // NO_HALF: %4 = fmul float %2, %3
 // NO_HALF: %dx.lerp = fadd float %0, %4
 // NO_HALF: ret float %dx.lerp
-half test_lerp_half ( half p0) {
-  return lerp ( p0, p0, p0 );
-}
+half test_lerp_half(half p0) { return lerp(p0, p0, p0); }
 
 // NATIVE_HALF: %dx.lerp = call <2 x half> @llvm.dx.lerp.v2f16(<2 x half> %0, <2 x half> %1, <2 x half> %2)
 // NATIVE_HALF: ret <2 x half> %dx.lerp
 // NO_HALF: %dx.lerp = call <2 x float> @llvm.dx.lerp.v2f32(<2 x float> %0, <2 x float> %1, <2 x float> %2)
 // NO_HALF: ret <2 x float> %dx.lerp
-half2  test_lerp_half2 ( half2 p0, half2 p1 ) {
-  return lerp ( p0, p0, p0 );
-}
+half2 test_lerp_half2(half2 p0, half2 p1) { return lerp(p0, p0, p0); }
 
 // NATIVE_HALF: %dx.lerp = call <3 x half> @llvm.dx.lerp.v3f16(<3 x half> %0, <3 x half> %1, <3 x half> %2)
 // NATIVE_HALF: ret <3 x half> %dx.lerp
 // NO_HALF: %dx.lerp = call <3 x float> @llvm.dx.lerp.v3f32(<3 x float> %0, <3 x float> %1, <3 x float> %2)
 // NO_HALF: ret <3 x float> %dx.lerp
-half3  test_lerp_half3 ( half3 p0, half3 p1 ) {
-  return lerp ( p0, p0, p0 );
-}
+half3 test_lerp_half3(half3 p0, half3 p1) { return lerp(p0, p0, p0); }
 
 // NATIVE_HALF: %dx.lerp = call <4 x half> @llvm.dx.lerp.v4f16(<4 x half> %0, <4 x half> %1, <4 x half> %2)
 // NATIVE_HALF: ret <4 x half> %dx.lerp
 // NO_HALF: %dx.lerp = call <4 x float> @llvm.dx.lerp.v4f32(<4 x float> %0, <4 x float> %1, <4 x float> %2)
 // NO_HALF: ret <4 x float> %dx.lerp
-half4  test_lerp_half4 ( half4 p0, half4 p1 ) {
-  return lerp ( p0, p0, p0 );
-}
+half4 test_lerp_half4(half4 p0, half4 p1) { return lerp(p0, p0, p0); }
 
 // CHECK: %3 = fsub float %1, %0
 // CHECK: %4 = fmul float %2, %3
 // CHECK: %dx.lerp = fadd float %0, %4
 // CHECK: ret float %dx.lerp
-float  test_lerp_float ( float p0, float p1 ) {
-  return lerp ( p0, p0, p0 );
-}
+float test_lerp_float(float p0, float p1) { return lerp(p0, p0, p0); }
 
 // CHECK: %dx.lerp = call <2 x float> @llvm.dx.lerp.v2f32(<2 x float> %0, <2 x float> %1, <2 x float> %2)
 // CHECK: ret <2 x float> %dx.lerp
-float2  test_lerp_float2 ( float2 p0, float2 p1 ) {
-  return lerp ( p0, p0, p0 );
-}
+float2 test_lerp_float2(float2 p0, float2 p1) { return lerp(p0, p0, p0); }
 
 // CHECK: %dx.lerp = call <3 x float> @llvm.dx.lerp.v3f32(<3 x float> %0, <3 x float> %1, <3 x float> %2)
 // CHECK: ret <3 x float> %dx.lerp
-float3  test_lerp_float3 ( float3 p0, float3 p1 ) {
-  return lerp ( p0, p0, p0 );
-}
+float3 test_lerp_float3(float3 p0, float3 p1) { return lerp(p0, p0, p0); }
 
 // CHECK: %dx.lerp = call <4 x float> @llvm.dx.lerp.v4f32(<4 x float> %0, <4 x float> %1, <4 x float> %2)
 // CHECK: ret <4 x float> %dx.lerp
-float4  test_lerp_float4 ( float4 p0, float4 p1) {
-  return lerp ( p0, p0, p0 );
-}
+float4 test_lerp_float4(float4 p0, float4 p1) { return lerp(p0, p0, p0); }
 
 // CHECK: %dx.lerp = call <2 x float> @llvm.dx.lerp.v2f32(<2 x float> %splat.splat, <2 x float> %1, <2 x float> %2)
 // CHECK: ret <2 x float> %dx.lerp
-float2  test_lerp_float2_splat ( float p0, float2 p1 ) {
-  return lerp( p0, p1, p1 );
-}
+float2 test_lerp_float2_splat(float p0, float2 p1) { return lerp(p0, p1, p1); }
 
 // CHECK: %dx.lerp = call <3 x float> @llvm.dx.lerp.v3f32(<3 x float> %splat.splat, <3 x float> %1, <3 x float> %2)
 // CHECK: ret <3 x float> %dx.lerp
-float3  test_lerp_float3_splat ( float p0, float3 p1 ) {
-  return lerp( p0, p1, p1 );
-}
+float3 test_lerp_float3_splat(float p0, float3 p1) { return lerp(p0, p1, p1); }
 
 // CHECK:  %dx.lerp = call <4 x float> @llvm.dx.lerp.v4f32(<4 x float> %splat.splat, <4 x float> %1, <4 x float> %2)
 // CHECK:  ret <4 x float> %dx.lerp
-float4  test_lerp_float4_splat ( float p0, float4 p1 ) {
-  return lerp( p0, p1, p1 );
-}
+float4 test_lerp_float4_splat(float p0, float4 p1) { return lerp(p0, p1, p1); }
 
 // CHECK: %conv = sitofp i32 %2 to float
 // CHECK: %splat.splatinsert = insertelement <2 x float> poison, float %conv, i64 0
 // CHECK: %splat.splat = shufflevector <2 x float> %splat.splatinsert, <2 x float> poison, <2 x i32> zeroinitializer
 // CHECK: %dx.lerp = call <2 x float> @llvm.dx.lerp.v2f32(<2 x float> %0, <2 x float> %1, <2 x float> %splat.splat)
 // CHECK: ret <2 x float> %dx.lerp
-float2 test_lerp_float2_int_splat ( float2 p0, int p1 ) {
-  return lerp ( p0, p0, p1 );
+float2 test_lerp_float2_int_splat(float2 p0, int p1) {
+  return lerp(p0, p0, p1);
 }
 
 // CHECK: %conv = sitofp i32 %2 to float
@@ -100,6 +78,6 @@ float2 test_lerp_float2_int_splat ( float2 p0, int p1 ) {
 // CHECK: %splat.splat = shufflevector <3 x float> %splat.splatinsert, <3 x float> poison, <3 x i32> zeroinitializer
 // CHECK:  %dx.lerp = call <3 x float> @llvm.dx.lerp.v3f32(<3 x float> %0, <3 x float> %1, <3 x float> %splat.splat)
 // CHECK: ret <3 x float> %dx.lerp
-float3 test_lerp_float3_int_splat ( float3 p0, int p1 ) {
-  return lerp ( p0, p0, p1 );
+float3 test_lerp_float3_int_splat(float3 p0, int p1) {
+  return lerp(p0, p0, p1);
 }

diff  --git a/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl b/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl
index 5dbb52a80c6bd0..8de8f86d7eb260 100644
--- a/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl
+++ b/clang/test/SemaHLSL/BuiltIns/dot-errors.hlsl
@@ -1,109 +1,110 @@
 // RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.6-library %s -fnative-half-type -emit-llvm -disable-llvm-passes -verify -verify-ignore-unexpected
 
-float test_no_second_arg ( float2 p0) {
-  return __builtin_hlsl_dot ( p0 );
+float test_no_second_arg(float2 p0) {
+  return __builtin_hlsl_dot(p0);
   // expected-error at -1 {{too few arguments to function call, expected 2, have 1}}
 }
 
-float test_too_many_arg ( float2 p0) {
-  return __builtin_hlsl_dot ( p0, p0, p0 );
+float test_too_many_arg(float2 p0) {
+  return __builtin_hlsl_dot(p0, p0, p0);
   // expected-error at -1 {{too many arguments to function call, expected 2, have 3}}
 }
 
-float test_dot_no_second_arg ( float2 p0) {
-  return dot ( p0 );
+float test_dot_no_second_arg(float2 p0) {
+  return dot(p0);
   // expected-error at -1 {{no matching function for call to 'dot'}}
 }
 
-float test_dot_vector_size_mismatch ( float3 p0, float2 p1 ) {
-  return dot ( p0, p1 );
+float test_dot_vector_size_mismatch(float3 p0, float2 p1) {
+  return dot(p0, p1);
   // expected-warning at -1 {{implicit conversion truncates vector: 'float3' (aka 'vector<float, 3>') to 'float __attribute__((ext_vector_type(2)))' (vector of 2 'float' values)}}
 }
 
-float test_dot_builtin_vector_size_mismatch ( float3 p0, float2 p1 ) {
-  return __builtin_hlsl_dot ( p0, p1 );
+float test_dot_builtin_vector_size_mismatch(float3 p0, float2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must have vectors of the same type}}
 }
 
-float test_dot_scalar_mismatch ( float p0, int p1 ) {
-  return dot ( p0, p1 );
+float test_dot_scalar_mismatch(float p0, int p1) {
+  return dot(p0, p1);
   // expected-error at -1 {{call to 'dot' is ambiguous}}
 }
 
-float test_dot_element_type_mismatch ( int2 p0, float2 p1 ) {
-  return dot ( p0, p1 );
+float test_dot_element_type_mismatch(int2 p0, float2 p1) {
+  return dot(p0, p1);
   // expected-error at -1 {{call to 'dot' is ambiguous}}
 }
 
 //NOTE: for all the *_promotion we are intentionally not handling type promotion in builtins
-float test_builtin_dot_vec_int_to_float_promotion ( int2 p0, float2 p1 ) {
-  return __builtin_hlsl_dot ( p0, p1 );
+float test_builtin_dot_vec_int_to_float_promotion(int2 p0, float2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must have vectors of the same type}}
 }
 
-int64_t test_builtin_dot_vec_int_to_int64_promotion( int64_t2 p0, int2 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+int64_t test_builtin_dot_vec_int_to_int64_promotion(int64_t2 p0, int2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must have vectors of the same type}}
 }
 
-float test_builtin_dot_vec_half_to_float_promotion( float2 p0, half2 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+float test_builtin_dot_vec_half_to_float_promotion(float2 p0, half2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must have vectors of the same type}}
 }
 
 #ifdef __HLSL_ENABLE_16_BIT
-float test_builtin_dot_vec_int16_to_float_promotion( float2 p0, int16_t2 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+float test_builtin_dot_vec_int16_to_float_promotion(float2 p0, int16_t2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must have vectors of the same type}}
 }
 
-half test_builtin_dot_vec_int16_to_half_promotion( half2 p0, int16_t2 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+half test_builtin_dot_vec_int16_to_half_promotion(half2 p0, int16_t2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must have vectors of the same type}}
 }
 
-int test_builtin_dot_vec_int16_to_int_promotion( int2 p0, int16_t2 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+int test_builtin_dot_vec_int16_to_int_promotion(int2 p0, int16_t2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must have vectors of the same type}}
 }
 
-int64_t test_builtin_dot_vec_int16_to_int64_promotion( int64_t2 p0, int16_t2 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+int64_t test_builtin_dot_vec_int16_to_int64_promotion(int64_t2 p0,
+                                                      int16_t2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must have vectors of the same type}}
 }
 #endif
 
-float test_builtin_dot_float2_splat ( float p0, float2 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+float test_builtin_dot_float2_splat(float p0, float2 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must be vectors}}
 }
 
-float test_builtin_dot_float3_splat ( float p0, float3 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+float test_builtin_dot_float3_splat(float p0, float3 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must be vectors}}
 }
 
-float test_builtin_dot_float4_splat ( float p0, float4 p1 ) {
-  return __builtin_hlsl_dot( p0, p1 );
+float test_builtin_dot_float4_splat(float p0, float4 p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must be vectors}}
 }
 
-float test_dot_float2_int_splat ( float2 p0, int p1 ) {
-  return __builtin_hlsl_dot ( p0, p1 );
+float test_dot_float2_int_splat(float2 p0, int p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must be vectors}}
 }
 
-float test_dot_float3_int_splat ( float3 p0, int p1 ) {
-  return __builtin_hlsl_dot ( p0, p1 );
+float test_dot_float3_int_splat(float3 p0, int p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must be vectors}}
 }
 
-float test_builtin_dot_int_vect_to_float_vec_promotion ( int2 p0, float p1 ) {
-  return __builtin_hlsl_dot ( p0, p1 );
+float test_builtin_dot_int_vect_to_float_vec_promotion(int2 p0, float p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_dot' must be vectors}}
 }
 
-int test_builtin_dot_bool_type_promotion ( bool p0, bool p1 ) {
-  return __builtin_hlsl_dot ( p0, p1 );
+int test_builtin_dot_bool_type_promotion(bool p0, bool p1) {
+  return __builtin_hlsl_dot(p0, p1);
   // expected-error at -1 {{1st argument must be a vector, integer or floating point type (was 'bool')}}
 }

diff  --git a/clang/test/SemaHLSL/BuiltIns/frac-errors.hlsl b/clang/test/SemaHLSL/BuiltIns/frac-errors.hlsl
new file mode 100644
index 00000000000000..06dbdf0a68dfc1
--- /dev/null
+++ b/clang/test/SemaHLSL/BuiltIns/frac-errors.hlsl
@@ -0,0 +1,27 @@
+
+// RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.6-library %s -fnative-half-type -emit-llvm -disable-llvm-passes -verify -verify-ignore-unexpected
+
+float test_too_few_arg() {
+  return __builtin_hlsl_elementwise_frac();
+  // expected-error at -1 {{too few arguments to function call, expected 1, have 0}}
+}
+
+float2 test_too_many_arg(float2 p0) {
+  return __builtin_hlsl_elementwise_frac(p0, p0);
+  // expected-error at -1 {{too many arguments to function call, expected 1, have 2}}
+}
+
+float builtin_bool_to_float_type_promotion(bool p1) {
+  return __builtin_hlsl_elementwise_frac(p1);
+  // expected-error at -1 {{1st argument must be a vector, integer or floating point type (was 'bool')}}
+}
+
+float builtin_frac_int_to_float_promotion(int p1) {
+  return __builtin_hlsl_elementwise_frac(p1);
+  // expected-error at -1 {{passing 'int' to parameter of incompatible type 'float'}}
+}
+
+float2 builtin_frac_int2_to_float2_promotion(int2 p1) {
+  return __builtin_hlsl_elementwise_frac(p1);
+  // expected-error at -1 {{passing 'int2' (aka 'vector<int, 2>') to parameter of incompatible type '__attribute__((__vector_size__(2 * sizeof(float)))) float' (vector of 2 'float' values)}}
+}

diff  --git a/clang/test/SemaHLSL/BuiltIns/lerp-errors.hlsl b/clang/test/SemaHLSL/BuiltIns/lerp-errors.hlsl
index c062aa60a8df45..4ec5a4cdd26a30 100644
--- a/clang/test/SemaHLSL/BuiltIns/lerp-errors.hlsl
+++ b/clang/test/SemaHLSL/BuiltIns/lerp-errors.hlsl
@@ -1,91 +1,96 @@
 // RUN: %clang_cc1 -finclude-default-header -triple dxil-pc-shadermodel6.6-library %s -fnative-half-type -emit-llvm -disable-llvm-passes -verify -verify-ignore-unexpected
 
-float2 test_no_second_arg ( float2 p0) {
-  return __builtin_hlsl_lerp ( p0 );
+float2 test_no_second_arg(float2 p0) {
+  return __builtin_hlsl_lerp(p0);
   // expected-error at -1 {{too few arguments to function call, expected 3, have 1}}
 }
 
-float2 test_no_third_arg ( float2 p0) {
-  return __builtin_hlsl_lerp ( p0, p0 );
+float2 test_no_third_arg(float2 p0) {
+  return __builtin_hlsl_lerp(p0, p0);
   // expected-error at -1 {{too few arguments to function call, expected 3, have 2}}
 }
 
-float2 test_too_many_arg ( float2 p0) {
-  return __builtin_hlsl_lerp ( p0, p0, p0, p0 );
+float2 test_too_many_arg(float2 p0) {
+  return __builtin_hlsl_lerp(p0, p0, p0, p0);
   // expected-error at -1 {{too many arguments to function call, expected 3, have 4}}
 }
 
-float2 test_lerp_no_second_arg ( float2 p0) {
-  return lerp ( p0 );
+float2 test_lerp_no_second_arg(float2 p0) {
+  return lerp(p0);
   // expected-error at -1 {{no matching function for call to 'lerp'}}
 }
 
-float2 test_lerp_vector_size_mismatch ( float3 p0, float2 p1 ) {
-  return lerp ( p0, p0, p1 );
+float2 test_lerp_vector_size_mismatch(float3 p0, float2 p1) {
+  return lerp(p0, p0, p1);
   // expected-warning at -1 {{implicit conversion truncates vector: 'float3' (aka 'vector<float, 3>') to 'float __attribute__((ext_vector_type(2)))' (vector of 2 'float' values)}}
 }
 
-float test_lerp_builtin_vector_size_mismatch ( float3 p0, float2 p1 ) {
-  return __builtin_hlsl_lerp ( p0, p1, p1 );
+float2 test_lerp_builtin_vector_size_mismatch(float3 p0, float2 p1) {
+  return __builtin_hlsl_lerp(p0, p1, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_lerp' must have vectors of the same type}}
 }
 
-float test_lerp_scalar_mismatch ( float p0, half p1 ) {
-  return lerp ( p1, p0, p1 );
+float test_lerp_scalar_mismatch(float p0, half p1) {
+  return lerp(p1, p0, p1);
   // expected-error at -1 {{call to 'lerp' is ambiguous}}
 }
 
-float test_lerp_element_type_mismatch ( half2 p0, float2 p1 ) {
-  return lerp ( p1, p0, p1 );
+float2 test_lerp_element_type_mismatch(half2 p0, float2 p1) {
+  return lerp(p1, p0, p1);
   // expected-error at -1 {{call to 'lerp' is ambiguous}}
 }
 
-float test_builtin_lerp_float2_splat ( float p0, float2 p1 ) {
-  return __builtin_hlsl_lerp( p0, p1, p1 );
+float2 test_builtin_lerp_float2_splat(float p0, float2 p1) {
+  return __builtin_hlsl_lerp(p0, p1, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_lerp' must be vectors}}
 }
 
-float test_builtin_lerp_float3_splat ( float p0, float3 p1 ) {
-  return  __builtin_hlsl_lerp( p0, p1, p1 );
+float3 test_builtin_lerp_float3_splat(float p0, float3 p1) {
+  return __builtin_hlsl_lerp(p0, p1, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_lerp' must be vectors}}
 }
 
-float test_builtin_lerp_float4_splat ( float p0, float4 p1 ) {
-  return  __builtin_hlsl_lerp( p0, p1, p1 );
+float4 test_builtin_lerp_float4_splat(float p0, float4 p1) {
+  return __builtin_hlsl_lerp(p0, p1, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_lerp' must be vectors}}
 }
 
-float test_lerp_float2_int_splat ( float2 p0, int p1 ) {
-  return  __builtin_hlsl_lerp( p0, p1, p1 );
+float2 test_lerp_float2_int_splat(float2 p0, int p1) {
+  return __builtin_hlsl_lerp(p0, p1, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_lerp' must be vectors}}
 }
 
-float test_lerp_float3_int_splat ( float3 p0, int p1 ) {
-  return  __builtin_hlsl_lerp( p0, p1, p1 );
+float3 test_lerp_float3_int_splat(float3 p0, int p1) {
+  return __builtin_hlsl_lerp(p0, p1, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_lerp' must be vectors}}
 }
 
-float test_builtin_lerp_int_vect_to_float_vec_promotion ( int2 p0, float p1 ) {
-  return  __builtin_hlsl_lerp( p0, p1, p1 );
+float2 test_builtin_lerp_int_vect_to_float_vec_promotion(int2 p0, float p1) {
+  return __builtin_hlsl_lerp(p0, p1, p1);
   // expected-error at -1 {{all arguments to '__builtin_hlsl_lerp' must be vectors}}
 }
 
-int test_builtin_lerp_bool_type_promotion (bool p0) {
-  return  __builtin_hlsl_lerp( p0, p0, p0 );
+float test_builtin_lerp_bool_type_promotion(bool p0) {
+  return __builtin_hlsl_lerp(p0, p0, p0);
   // expected-error at -1 {{1st argument must be a floating point type (was 'bool')}}
 }
 
-float builtin_bool_to_float_type_promotion ( float p0, bool p1 ) {
-  return __builtin_hlsl_lerp ( p0, p0, p1 );
-   // expected-error at -1 {{3rd argument must be a floating point type (was 'bool')}}
+float builtin_bool_to_float_type_promotion(float p0, bool p1) {
+  return __builtin_hlsl_lerp(p0, p0, p1);
+  // expected-error at -1 {{3rd argument must be a floating point type (was 'bool')}}
 }
 
-float builtin_bool_to_float_type_promotion2 ( bool p0, float p1 ) {
-  return __builtin_hlsl_lerp ( p1, p0, p1 );
+float builtin_bool_to_float_type_promotion2(bool p0, float p1) {
+  return __builtin_hlsl_lerp(p1, p0, p1);
   // expected-error at -1 {{2nd argument must be a floating point type (was 'bool')}}
 }
 
-float builtin_lerp_int_to_float_promotion ( float p0, int p1 ) {
-  return __builtin_hlsl_lerp ( p0, p0, p1 );
+float builtin_lerp_int_to_float_promotion(float p0, int p1) {
+  return __builtin_hlsl_lerp(p0, p0, p1);
   // expected-error at -1 {{3rd argument must be a floating point type (was 'int')}}
+}
+
+float4 test_lerp_int4(int4 p0, int4 p1, int4 p2) {
+  return __builtin_hlsl_lerp(p0, p1, p2);
+   // expected-error at -1 {{1st argument must be a floating point type (was 'int4' (aka 'vector<int, 4>'))}}
 }
\ No newline at end of file

diff  --git a/clang/test/SemaHLSL/OverloadResolutionBugs.hlsl b/clang/test/SemaHLSL/OverloadResolutionBugs.hlsl
index 8464f1c1a7c2cd..c13cb299127aac 100644
--- a/clang/test/SemaHLSL/OverloadResolutionBugs.hlsl
+++ b/clang/test/SemaHLSL/OverloadResolutionBugs.hlsl
@@ -7,73 +7,67 @@
 void Fn3(double2 D);
 void Fn3(float2 F);
 
-void Call3(half2 H) {
-  Fn3(H);
-}
+void Call3(half2 H) { Fn3(H); }
 
 void Fn5(double2 D);
 
-void Call5(half2 H) {
-  Fn5(H);
-}
+void Call5(half2 H) { Fn5(H); }
 
 void Fn4(int64_t2 L);
 void Fn4(int2 I);
 
-void Call4(int16_t H) {
-  Fn4(H);
-}
+void Call4(int16_t H) { Fn4(H); }
 
-int test_builtin_dot_bool_type_promotion ( bool p0, bool p1 ) {
-  return dot ( p0, p1 );
+int test_builtin_dot_bool_type_promotion(bool p0, bool p1) {
+  return dot(p0, p1);
 }
 
-float test_dot_scalar_mismatch ( float p0, int p1 ) {
-  return dot ( p0, p1 );
-}
+float test_dot_scalar_mismatch(float p0, int p1) { return dot(p0, p1); }
 
-float test_dot_element_type_mismatch ( int2 p0, float2 p1 ) {
-  return dot ( p0, p1 );
-}
+float test_dot_element_type_mismatch(int2 p0, float2 p1) { return dot(p0, p1); }
 
-float test_builtin_dot_vec_int_to_float_promotion ( int2 p0, float2 p1 ) {
-  return dot ( p0, p1 );
+float test_builtin_dot_vec_int_to_float_promotion(int2 p0, float2 p1) {
+  return dot(p0, p1);
 }
 
-int64_t test_builtin_dot_vec_int_to_int64_promotion( int64_t2 p0, int2 p1 ) {
-  return dot ( p0, p1 );
+int64_t test_builtin_dot_vec_int_to_int64_promotion(int64_t2 p0, int2 p1) {
+  return dot(p0, p1);
 }
 
-float test_builtin_dot_vec_half_to_float_promotion( float2 p0, half2 p1 ) {
-  return dot( p0, p1 );
+float test_builtin_dot_vec_half_to_float_promotion(float2 p0, half2 p1) {
+  return dot(p0, p1);
 }
 
-float test_builtin_dot_vec_int16_to_float_promotion( float2 p0, int16_t2 p1 ) {
-  return dot( p0, p1 );
+float test_builtin_dot_vec_int16_to_float_promotion(float2 p0, int16_t2 p1) {
+  return dot(p0, p1);
 }
 
-half test_builtin_dot_vec_int16_to_half_promotion( half2 p0, int16_t2 p1 ) {
-  return dot( p0, p1 );
+half test_builtin_dot_vec_int16_to_half_promotion(half2 p0, int16_t2 p1) {
+  return dot(p0, p1);
 }
 
-int test_builtin_dot_vec_int16_to_int_promotion( int2 p0, int16_t2 p1 ) {
-  return dot( p0, p1 );
+int test_builtin_dot_vec_int16_to_int_promotion(int2 p0, int16_t2 p1) {
+  return dot(p0, p1);
 }
 
-int64_t test_builtin_dot_vec_int16_to_int64_promotion( int64_t2 p0, int16_t2 p1 ) {
-  return dot( p0, p1 );
+int64_t test_builtin_dot_vec_int16_to_int64_promotion(int64_t2 p0,
+                                                      int16_t2 p1) {
+  return dot(p0, p1);
 }
 
+float4 test_frac_int4(int4 p0) { return frac(p0); }
+
+float test_frac_int(int p0) { return frac(p0); }
+
+float test_frac_bool(bool p0) { return frac(p0); }
+
 // https://github.com/llvm/llvm-project/issues/81049
 
 // RUN: %clang_cc1 -std=hlsl2021 -finclude-default-header -x hlsl -triple \
 // RUN:   dxil-pc-shadermodel6.2-library %s -emit-llvm -disable-llvm-passes \
 // RUN:   -o - | FileCheck %s --check-prefix=NO_HALF
 
-half sqrt_h(half x)
-{
-  return sqrt(x);
-}
+half sqrt_h(half x) { return sqrt(x); }
 
 // NO_HALF: define noundef float @"?sqrt_h@@YA$halff@$halff@@Z"(
 // NO_HALF: call float @llvm.sqrt.f32(float %0)

diff  --git a/llvm/include/llvm/IR/IntrinsicsDirectX.td b/llvm/include/llvm/IR/IntrinsicsDirectX.td
index 48332b917693a0..b44d1c6d3d2f06 100644
--- a/llvm/include/llvm/IR/IntrinsicsDirectX.td
+++ b/llvm/include/llvm/IR/IntrinsicsDirectX.td
@@ -25,8 +25,10 @@ def int_dx_dot :
     [llvm_anyvector_ty, LLVMScalarOrSameVectorWidth<0, LLVMVectorElementType<0>>],
     [IntrNoMem, IntrWillReturn, Commutative] >;
 
+def int_dx_frac  : DefaultAttrsIntrinsic<[llvm_anyfloat_ty], [LLVMMatchType<0>]>;
+
 def int_dx_lerp :
-    Intrinsic<[LLVMMatchType<0>], 
-    [llvm_anyvector_ty, LLVMMatchType<0>, LLVMMatchType<0>],
-    [IntrNoMem, IntrWillReturn, Commutative] >;
+    Intrinsic<[LLVMScalarOrSameVectorWidth<0, LLVMVectorElementType<0>>],
+    [llvm_anyvector_ty, LLVMScalarOrSameVectorWidth<0, LLVMVectorElementType<0>>,LLVMScalarOrSameVectorWidth<0, LLVMVectorElementType<0>>],
+    [IntrNoMem, IntrWillReturn] >;
 }


        


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