[clang] [clang:frontend] Move helper functions to common location for SemaSPIRV (PR #125045)

Muhammad Bassiouni via cfe-commits cfe-commits at lists.llvm.org
Thu Jan 30 23:24:58 PST 2025


https://github.com/bassiounix updated https://github.com/llvm/llvm-project/pull/125045

>From d938f75b1a5638f013ae2f7fb4f0ac2f6e28c6a4 Mon Sep 17 00:00:00 2001
From: Muhammad Bassiouni <bassiouni.git at gmail.com>
Date: Thu, 30 Jan 2025 12:02:25 +0200
Subject: [PATCH 1/5] [clang:frontend] Move helper functions in SemaHLSL to
 common location for SemaSPIRV

---
 clang/include/clang/Sema/Common.h | 22 +++++++++++
 clang/lib/Sema/CMakeLists.txt     |  1 +
 clang/lib/Sema/Common.cpp         | 65 +++++++++++++++++++++++++++++++
 clang/lib/Sema/SemaHLSL.cpp       | 28 +------------
 clang/lib/Sema/SemaSPIRV.cpp      | 52 +++----------------------
 5 files changed, 95 insertions(+), 73 deletions(-)
 create mode 100644 clang/include/clang/Sema/Common.h
 create mode 100644 clang/lib/Sema/Common.cpp

diff --git a/clang/include/clang/Sema/Common.h b/clang/include/clang/Sema/Common.h
new file mode 100644
index 000000000000000..3f775df8bddb649
--- /dev/null
+++ b/clang/include/clang/Sema/Common.h
@@ -0,0 +1,22 @@
+#ifndef LLVM_CLANG_SEMA_COMMON_H
+#define LLVM_CLANG_SEMA_COMMON_H
+
+#include "clang/Sema/Sema.h"
+
+namespace clang {
+
+using LLVMFnRef = llvm::function_ref<bool(clang::QualType PassedType)>;
+using PairParam = std::pair<unsigned int, unsigned int>;
+using CheckParam = std::variant<PairParam, LLVMFnRef>;
+
+bool CheckArgTypeIsCorrect(
+    Sema *S, Expr *Arg, QualType ExpectedType,
+    llvm::function_ref<bool(clang::QualType PassedType)> Check);
+
+bool CheckAllArgTypesAreCorrect(
+    Sema *SemaPtr, CallExpr *TheCall,
+    std::variant<QualType, std::nullopt_t> ExpectedType, CheckParam Check);
+
+} // namespace clang
+
+#endif
diff --git a/clang/lib/Sema/CMakeLists.txt b/clang/lib/Sema/CMakeLists.txt
index 19cf3a2db00fdcd..ddc340a51a3b2d1 100644
--- a/clang/lib/Sema/CMakeLists.txt
+++ b/clang/lib/Sema/CMakeLists.txt
@@ -17,6 +17,7 @@ add_clang_library(clangSema
   AnalysisBasedWarnings.cpp
   CheckExprLifetime.cpp
   CodeCompleteConsumer.cpp
+  Common.cpp
   DeclSpec.cpp
   DelayedDiagnostic.cpp
   HeuristicResolver.cpp
diff --git a/clang/lib/Sema/Common.cpp b/clang/lib/Sema/Common.cpp
new file mode 100644
index 000000000000000..72a9e4a2c99ae11
--- /dev/null
+++ b/clang/lib/Sema/Common.cpp
@@ -0,0 +1,65 @@
+#include "clang/Sema/Common.h"
+
+namespace clang {
+
+bool CheckArgTypeIsCorrect(
+    Sema *S, Expr *Arg, QualType ExpectedType,
+    llvm::function_ref<bool(clang::QualType PassedType)> Check) {
+  QualType PassedType = Arg->getType();
+  if (Check(PassedType)) {
+    if (auto *VecTyA = PassedType->getAs<VectorType>())
+      ExpectedType = S->Context.getVectorType(
+          ExpectedType, VecTyA->getNumElements(), VecTyA->getVectorKind());
+    S->Diag(Arg->getBeginLoc(), diag::err_typecheck_convert_incompatible)
+        << PassedType << ExpectedType << 1 << 0 << 0;
+    return true;
+  }
+  return false;
+}
+
+bool CheckAllArgTypesAreCorrect(
+    Sema *SemaPtr, CallExpr *TheCall,
+    std::variant<QualType, std::nullopt_t> ExpectedType, CheckParam Check) {
+  unsigned int NumElts;
+  unsigned int expected;
+  if (auto *n = std::get_if<PairParam>(&Check)) {
+    if (SemaPtr->checkArgCount(TheCall, n->first)) {
+      return true;
+    }
+    NumElts = n->first;
+    expected = n->second;
+  } else {
+    NumElts = TheCall->getNumArgs();
+  }
+
+  for (unsigned i = 0; i < NumElts; i++) {
+    Expr *localArg = TheCall->getArg(i);
+    if (auto *val = std::get_if<QualType>(&ExpectedType)) {
+      if (auto *fn = std::get_if<LLVMFnRef>(&Check)) {
+        return CheckArgTypeIsCorrect(SemaPtr, localArg, *val, *fn);
+      }
+    }
+
+    QualType PassedType = localArg->getType();
+    if (PassedType->getAs<VectorType>() == nullptr) {
+      SemaPtr->Diag(localArg->getBeginLoc(),
+                    diag::err_typecheck_convert_incompatible)
+          << PassedType
+          << SemaPtr->Context.getVectorType(PassedType, expected,
+                                            VectorKind::Generic)
+          << 1 << 0 << 0;
+      return true;
+    }
+  }
+
+  if (std::get_if<PairParam>(&Check)) {
+    if (auto *localArgVecTy =
+            TheCall->getArg(0)->getType()->getAs<VectorType>()) {
+      TheCall->setType(localArgVecTy->getElementType());
+    }
+  }
+
+  return false;
+}
+
+} // namespace clang
diff --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index d748c10455289b9..0cc71e4122666c0 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -27,6 +27,7 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/Specifiers.h"
 #include "clang/Basic/TargetInfo.h"
+#include "clang/Sema/Common.h"
 #include "clang/Sema/Initialization.h"
 #include "clang/Sema/ParsedAttr.h"
 #include "clang/Sema/Sema.h"
@@ -1996,33 +1997,6 @@ static bool CheckArgTypeMatches(Sema *S, Expr *Arg, QualType ExpectedType) {
   return false;
 }
 
-static bool CheckArgTypeIsCorrect(
-    Sema *S, Expr *Arg, QualType ExpectedType,
-    llvm::function_ref<bool(clang::QualType PassedType)> Check) {
-  QualType PassedType = Arg->getType();
-  if (Check(PassedType)) {
-    if (auto *VecTyA = PassedType->getAs<VectorType>())
-      ExpectedType = S->Context.getVectorType(
-          ExpectedType, VecTyA->getNumElements(), VecTyA->getVectorKind());
-    S->Diag(Arg->getBeginLoc(), diag::err_typecheck_convert_incompatible)
-        << PassedType << ExpectedType << 1 << 0 << 0;
-    return true;
-  }
-  return false;
-}
-
-static bool CheckAllArgTypesAreCorrect(
-    Sema *S, CallExpr *TheCall, QualType ExpectedType,
-    llvm::function_ref<bool(clang::QualType PassedType)> Check) {
-  for (unsigned i = 0; i < TheCall->getNumArgs(); ++i) {
-    Expr *Arg = TheCall->getArg(i);
-    if (CheckArgTypeIsCorrect(S, Arg, ExpectedType, Check)) {
-      return true;
-    }
-  }
-  return false;
-}
-
 static bool CheckAllArgsHaveFloatRepresentation(Sema *S, CallExpr *TheCall) {
   auto checkAllFloatTypes = [](clang::QualType PassedType) -> bool {
     return !PassedType->hasFloatingRepresentation();
diff --git a/clang/lib/Sema/SemaSPIRV.cpp b/clang/lib/Sema/SemaSPIRV.cpp
index dc49fc79073572e..df6a3d61056f5ef 100644
--- a/clang/lib/Sema/SemaSPIRV.cpp
+++ b/clang/lib/Sema/SemaSPIRV.cpp
@@ -10,7 +10,9 @@
 
 #include "clang/Sema/SemaSPIRV.h"
 #include "clang/Basic/TargetBuiltins.h"
+#include "clang/Sema/Common.h"
 #include "clang/Sema/Sema.h"
+#include <utility>
 
 namespace clang {
 
@@ -20,54 +22,12 @@ bool SemaSPIRV::CheckSPIRVBuiltinFunctionCall(unsigned BuiltinID,
                                               CallExpr *TheCall) {
   switch (BuiltinID) {
   case SPIRV::BI__builtin_spirv_distance: {
-    if (SemaRef.checkArgCount(TheCall, 2))
-      return true;
-
-    ExprResult A = TheCall->getArg(0);
-    QualType ArgTyA = A.get()->getType();
-    auto *VTyA = ArgTyA->getAs<VectorType>();
-    if (VTyA == nullptr) {
-      SemaRef.Diag(A.get()->getBeginLoc(),
-                   diag::err_typecheck_convert_incompatible)
-          << ArgTyA
-          << SemaRef.Context.getVectorType(ArgTyA, 2, VectorKind::Generic) << 1
-          << 0 << 0;
-      return true;
-    }
-
-    ExprResult B = TheCall->getArg(1);
-    QualType ArgTyB = B.get()->getType();
-    auto *VTyB = ArgTyB->getAs<VectorType>();
-    if (VTyB == nullptr) {
-      SemaRef.Diag(A.get()->getBeginLoc(),
-                   diag::err_typecheck_convert_incompatible)
-          << ArgTyB
-          << SemaRef.Context.getVectorType(ArgTyB, 2, VectorKind::Generic) << 1
-          << 0 << 0;
-      return true;
-    }
-
-    QualType RetTy = VTyA->getElementType();
-    TheCall->setType(RetTy);
-    break;
+    return CheckAllArgTypesAreCorrect(&SemaRef, TheCall, std::nullopt,
+                                      std::make_pair(2, 2));
   }
   case SPIRV::BI__builtin_spirv_length: {
-    if (SemaRef.checkArgCount(TheCall, 1))
-      return true;
-    ExprResult A = TheCall->getArg(0);
-    QualType ArgTyA = A.get()->getType();
-    auto *VTy = ArgTyA->getAs<VectorType>();
-    if (VTy == nullptr) {
-      SemaRef.Diag(A.get()->getBeginLoc(),
-                   diag::err_typecheck_convert_incompatible)
-          << ArgTyA
-          << SemaRef.Context.getVectorType(ArgTyA, 2, VectorKind::Generic) << 1
-          << 0 << 0;
-      return true;
-    }
-    QualType RetTy = VTy->getElementType();
-    TheCall->setType(RetTy);
-    break;
+    return CheckAllArgTypesAreCorrect(&SemaRef, TheCall, std::nullopt,
+                                      std::make_pair(1, 2));
   }
   }
   return false;

>From 494ddbeb7f8177f25316465bb967cddb237a34ce Mon Sep 17 00:00:00 2001
From: Muhammad Bassiouni <bassiouni.git at gmail.com>
Date: Thu, 30 Jan 2025 12:48:08 +0200
Subject: [PATCH 2/5] chore(style): update code style according to LLVM coding
 standard

---
 clang/lib/Sema/Common.cpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/clang/lib/Sema/Common.cpp b/clang/lib/Sema/Common.cpp
index 72a9e4a2c99ae11..50e85f780536d39 100644
--- a/clang/lib/Sema/Common.cpp
+++ b/clang/lib/Sema/Common.cpp
@@ -1,8 +1,6 @@
 #include "clang/Sema/Common.h"
 
-namespace clang {
-
-bool CheckArgTypeIsCorrect(
+bool clang::CheckArgTypeIsCorrect(
     Sema *S, Expr *Arg, QualType ExpectedType,
     llvm::function_ref<bool(clang::QualType PassedType)> Check) {
   QualType PassedType = Arg->getType();
@@ -17,7 +15,7 @@ bool CheckArgTypeIsCorrect(
   return false;
 }
 
-bool CheckAllArgTypesAreCorrect(
+bool clang::CheckAllArgTypesAreCorrect(
     Sema *SemaPtr, CallExpr *TheCall,
     std::variant<QualType, std::nullopt_t> ExpectedType, CheckParam Check) {
   unsigned int NumElts;
@@ -61,5 +59,3 @@ bool CheckAllArgTypesAreCorrect(
 
   return false;
 }
-
-} // namespace clang

>From e36627178a02170a55564efbd545f0b6ec2781cf Mon Sep 17 00:00:00 2001
From: Muhammad Bassiouni <bassiouni.git at gmail.com>
Date: Thu, 30 Jan 2025 15:13:28 +0200
Subject: [PATCH 3/5] chore(license): add license to recently created files

---
 clang/include/clang/Sema/Common.h | 11 +++++++++++
 clang/lib/Sema/Common.cpp         | 11 +++++++++++
 2 files changed, 22 insertions(+)

diff --git a/clang/include/clang/Sema/Common.h b/clang/include/clang/Sema/Common.h
index 3f775df8bddb649..5f142a9b35f80ee 100644
--- a/clang/include/clang/Sema/Common.h
+++ b/clang/include/clang/Sema/Common.h
@@ -1,3 +1,14 @@
+//===--- Common.h ----- Semantic Analysis common header file --------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// This file declares common functions used in SPIRV and HLSL semantic
+// analysis constructs.
+//===----------------------------------------------------------------------===//
+
 #ifndef LLVM_CLANG_SEMA_COMMON_H
 #define LLVM_CLANG_SEMA_COMMON_H
 
diff --git a/clang/lib/Sema/Common.cpp b/clang/lib/Sema/Common.cpp
index 50e85f780536d39..2c4087d10d05216 100644
--- a/clang/lib/Sema/Common.cpp
+++ b/clang/lib/Sema/Common.cpp
@@ -1,3 +1,14 @@
+//===--- Common.cpp --- Semantic Analysis common implementation file ------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+// This implements common functions used in SPIRV and HLSL semantic
+// analysis constructs.
+//===----------------------------------------------------------------------===//
+
 #include "clang/Sema/Common.h"
 
 bool clang::CheckArgTypeIsCorrect(

>From 951065bb67d32da89560868a67208415750fa6f1 Mon Sep 17 00:00:00 2001
From: Muhammad Bassiouni <bassiouni.git at gmail.com>
Date: Fri, 31 Jan 2025 05:22:19 +0200
Subject: [PATCH 4/5] fix(SemaCommon): Separate the concern of
 `CheckAllArgTypesAreCorrect` with simpler impl

---
 clang/include/clang/Sema/Common.h | 12 +++----
 clang/lib/Sema/Common.cpp         | 54 ++++++++++++++-----------------
 clang/lib/Sema/SemaSPIRV.cpp      |  7 ++--
 3 files changed, 33 insertions(+), 40 deletions(-)

diff --git a/clang/include/clang/Sema/Common.h b/clang/include/clang/Sema/Common.h
index 5f142a9b35f80ee..d07def27c73cd9b 100644
--- a/clang/include/clang/Sema/Common.h
+++ b/clang/include/clang/Sema/Common.h
@@ -16,17 +16,17 @@
 
 namespace clang {
 
-using LLVMFnRef = llvm::function_ref<bool(clang::QualType PassedType)>;
-using PairParam = std::pair<unsigned int, unsigned int>;
-using CheckParam = std::variant<PairParam, LLVMFnRef>;
-
 bool CheckArgTypeIsCorrect(
     Sema *S, Expr *Arg, QualType ExpectedType,
     llvm::function_ref<bool(clang::QualType PassedType)> Check);
 
 bool CheckAllArgTypesAreCorrect(
-    Sema *SemaPtr, CallExpr *TheCall,
-    std::variant<QualType, std::nullopt_t> ExpectedType, CheckParam Check);
+    Sema *S, CallExpr *TheCall, QualType ExpectedType,
+    llvm::function_ref<bool(clang::QualType PassedType)> Check);
+
+bool CheckAllArgTypesAreCorrect(Sema *SemaPtr, CallExpr *TheCall,
+                                unsigned int NumOfElts,
+                                unsigned int expectedNumOfElts);
 
 } // namespace clang
 
diff --git a/clang/lib/Sema/Common.cpp b/clang/lib/Sema/Common.cpp
index 2c4087d10d05216..7262b0182c3c5f5 100644
--- a/clang/lib/Sema/Common.cpp
+++ b/clang/lib/Sema/Common.cpp
@@ -27,45 +27,41 @@ bool clang::CheckArgTypeIsCorrect(
 }
 
 bool clang::CheckAllArgTypesAreCorrect(
-    Sema *SemaPtr, CallExpr *TheCall,
-    std::variant<QualType, std::nullopt_t> ExpectedType, CheckParam Check) {
-  unsigned int NumElts;
-  unsigned int expected;
-  if (auto *n = std::get_if<PairParam>(&Check)) {
-    if (SemaPtr->checkArgCount(TheCall, n->first)) {
+    Sema *S, CallExpr *TheCall, QualType ExpectedType,
+    llvm::function_ref<bool(clang::QualType PassedType)> Check) {
+  for (unsigned i = 0; i < TheCall->getNumArgs(); ++i) {
+    Expr *Arg = TheCall->getArg(i);
+    if (CheckArgTypeIsCorrect(S, Arg, ExpectedType, Check)) {
       return true;
     }
-    NumElts = n->first;
-    expected = n->second;
-  } else {
-    NumElts = TheCall->getNumArgs();
   }
+  return false;
+}
 
-  for (unsigned i = 0; i < NumElts; i++) {
-    Expr *localArg = TheCall->getArg(i);
-    if (auto *val = std::get_if<QualType>(&ExpectedType)) {
-      if (auto *fn = std::get_if<LLVMFnRef>(&Check)) {
-        return CheckArgTypeIsCorrect(SemaPtr, localArg, *val, *fn);
-      }
-    }
+bool clang::CheckAllArgTypesAreCorrect(Sema *SemaPtr, CallExpr *TheCall,
+                                       unsigned int NumOfElts,
+                                       unsigned int expectedNumOfElts) {
+  if (SemaPtr->checkArgCount(TheCall, NumOfElts)) {
+    return true;
+  }
 
+  for (unsigned i = 0; i < NumOfElts; i++) {
+    Expr *localArg = TheCall->getArg(i);
     QualType PassedType = localArg->getType();
-    if (PassedType->getAs<VectorType>() == nullptr) {
-      SemaPtr->Diag(localArg->getBeginLoc(),
-                    diag::err_typecheck_convert_incompatible)
-          << PassedType
-          << SemaPtr->Context.getVectorType(PassedType, expected,
-                                            VectorKind::Generic)
-          << 1 << 0 << 0;
+    QualType ExpectedType = SemaPtr->Context.getVectorType(
+        PassedType, expectedNumOfElts, VectorKind::Generic);
+    auto Check = [](QualType PassedType) {
+      return PassedType->getAs<VectorType>() == nullptr;
+    };
+
+    if (CheckArgTypeIsCorrect(SemaPtr, localArg, ExpectedType, Check)) {
       return true;
     }
   }
 
-  if (std::get_if<PairParam>(&Check)) {
-    if (auto *localArgVecTy =
-            TheCall->getArg(0)->getType()->getAs<VectorType>()) {
-      TheCall->setType(localArgVecTy->getElementType());
-    }
+  if (auto *localArgVecTy =
+          TheCall->getArg(0)->getType()->getAs<VectorType>()) {
+    TheCall->setType(localArgVecTy->getElementType());
   }
 
   return false;
diff --git a/clang/lib/Sema/SemaSPIRV.cpp b/clang/lib/Sema/SemaSPIRV.cpp
index df6a3d61056f5ef..c55a68f8df531dd 100644
--- a/clang/lib/Sema/SemaSPIRV.cpp
+++ b/clang/lib/Sema/SemaSPIRV.cpp
@@ -12,7 +12,6 @@
 #include "clang/Basic/TargetBuiltins.h"
 #include "clang/Sema/Common.h"
 #include "clang/Sema/Sema.h"
-#include <utility>
 
 namespace clang {
 
@@ -22,12 +21,10 @@ bool SemaSPIRV::CheckSPIRVBuiltinFunctionCall(unsigned BuiltinID,
                                               CallExpr *TheCall) {
   switch (BuiltinID) {
   case SPIRV::BI__builtin_spirv_distance: {
-    return CheckAllArgTypesAreCorrect(&SemaRef, TheCall, std::nullopt,
-                                      std::make_pair(2, 2));
+    return CheckAllArgTypesAreCorrect(&SemaRef, TheCall, 2, 2);
   }
   case SPIRV::BI__builtin_spirv_length: {
-    return CheckAllArgTypesAreCorrect(&SemaRef, TheCall, std::nullopt,
-                                      std::make_pair(1, 2));
+    return CheckAllArgTypesAreCorrect(&SemaRef, TheCall, 1, 2);
   }
   }
   return false;

>From f42034f0ef174d2ef4f2bf58f7900d541c8b070e Mon Sep 17 00:00:00 2001
From: Muhammad Bassiouni <bassiouni.git at gmail.com>
Date: Fri, 31 Jan 2025 09:22:06 +0200
Subject: [PATCH 5/5] fix(Sema): move helper function definitions to Sema class
 header.

---
 clang/include/clang/Sema/Common.h | 33 -------------------------------
 clang/include/clang/Sema/Sema.h   | 24 ++++++++++++++++++++++
 clang/lib/Sema/Common.cpp         | 12 +++++------
 clang/lib/Sema/SemaHLSL.cpp       | 21 ++++++++++----------
 clang/lib/Sema/SemaSPIRV.cpp      |  5 ++---
 5 files changed, 42 insertions(+), 53 deletions(-)
 delete mode 100644 clang/include/clang/Sema/Common.h

diff --git a/clang/include/clang/Sema/Common.h b/clang/include/clang/Sema/Common.h
deleted file mode 100644
index d07def27c73cd9b..000000000000000
--- a/clang/include/clang/Sema/Common.h
+++ /dev/null
@@ -1,33 +0,0 @@
-//===--- Common.h ----- Semantic Analysis common header file --------------===//
-//
-// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
-// See https://llvm.org/LICENSE.txt for license information.
-// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
-//
-//===----------------------------------------------------------------------===//
-// This file declares common functions used in SPIRV and HLSL semantic
-// analysis constructs.
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_CLANG_SEMA_COMMON_H
-#define LLVM_CLANG_SEMA_COMMON_H
-
-#include "clang/Sema/Sema.h"
-
-namespace clang {
-
-bool CheckArgTypeIsCorrect(
-    Sema *S, Expr *Arg, QualType ExpectedType,
-    llvm::function_ref<bool(clang::QualType PassedType)> Check);
-
-bool CheckAllArgTypesAreCorrect(
-    Sema *S, CallExpr *TheCall, QualType ExpectedType,
-    llvm::function_ref<bool(clang::QualType PassedType)> Check);
-
-bool CheckAllArgTypesAreCorrect(Sema *SemaPtr, CallExpr *TheCall,
-                                unsigned int NumOfElts,
-                                unsigned int expectedNumOfElts);
-
-} // namespace clang
-
-#endif
diff --git a/clang/include/clang/Sema/Sema.h b/clang/include/clang/Sema/Sema.h
index 472a0e25adc9752..a797d8f7d37dce0 100644
--- a/clang/include/clang/Sema/Sema.h
+++ b/clang/include/clang/Sema/Sema.h
@@ -15216,6 +15216,30 @@ class Sema final : public SemaBase {
   void performFunctionEffectAnalysis(TranslationUnitDecl *TU);
 
   ///@}
+
+  //
+  //
+  // -------------------------------------------------------------------------
+  //
+  //
+
+  /// \name Common Helper Functions
+  /// Implementations are in Common.cpp
+  ///@{
+public:
+  static bool CheckArgTypeIsCorrect(
+      Sema *S, Expr *Arg, QualType ExpectedType,
+      llvm::function_ref<bool(clang::QualType PassedType)> Check);
+
+  static bool CheckAllArgTypesAreCorrect(
+      Sema *S, CallExpr *TheCall, QualType ExpectedType,
+      llvm::function_ref<bool(clang::QualType PassedType)> Check);
+
+  static bool CheckAllArgTypesAreCorrect(Sema *SemaPtr, CallExpr *TheCall,
+                                         unsigned int NumOfElts,
+                                         unsigned int expectedNumOfElts);
+
+  ///@}
 };
 
 DeductionFailureInfo
diff --git a/clang/lib/Sema/Common.cpp b/clang/lib/Sema/Common.cpp
index 7262b0182c3c5f5..2a2f4402e84aa56 100644
--- a/clang/lib/Sema/Common.cpp
+++ b/clang/lib/Sema/Common.cpp
@@ -9,9 +9,9 @@
 // analysis constructs.
 //===----------------------------------------------------------------------===//
 
-#include "clang/Sema/Common.h"
+#include "clang/Sema/Sema.h"
 
-bool clang::CheckArgTypeIsCorrect(
+bool clang::Sema::CheckArgTypeIsCorrect(
     Sema *S, Expr *Arg, QualType ExpectedType,
     llvm::function_ref<bool(clang::QualType PassedType)> Check) {
   QualType PassedType = Arg->getType();
@@ -26,7 +26,7 @@ bool clang::CheckArgTypeIsCorrect(
   return false;
 }
 
-bool clang::CheckAllArgTypesAreCorrect(
+bool clang::Sema::CheckAllArgTypesAreCorrect(
     Sema *S, CallExpr *TheCall, QualType ExpectedType,
     llvm::function_ref<bool(clang::QualType PassedType)> Check) {
   for (unsigned i = 0; i < TheCall->getNumArgs(); ++i) {
@@ -38,9 +38,9 @@ bool clang::CheckAllArgTypesAreCorrect(
   return false;
 }
 
-bool clang::CheckAllArgTypesAreCorrect(Sema *SemaPtr, CallExpr *TheCall,
-                                       unsigned int NumOfElts,
-                                       unsigned int expectedNumOfElts) {
+bool clang::Sema::CheckAllArgTypesAreCorrect(Sema *SemaPtr, CallExpr *TheCall,
+                                             unsigned int NumOfElts,
+                                             unsigned int expectedNumOfElts) {
   if (SemaPtr->checkArgCount(TheCall, NumOfElts)) {
     return true;
   }
diff --git a/clang/lib/Sema/SemaHLSL.cpp b/clang/lib/Sema/SemaHLSL.cpp
index 0cc71e4122666c0..3bfdd195ac7f15b 100644
--- a/clang/lib/Sema/SemaHLSL.cpp
+++ b/clang/lib/Sema/SemaHLSL.cpp
@@ -27,7 +27,6 @@
 #include "clang/Basic/SourceLocation.h"
 #include "clang/Basic/Specifiers.h"
 #include "clang/Basic/TargetInfo.h"
-#include "clang/Sema/Common.h"
 #include "clang/Sema/Initialization.h"
 #include "clang/Sema/ParsedAttr.h"
 #include "clang/Sema/Sema.h"
@@ -2001,8 +2000,8 @@ static bool CheckAllArgsHaveFloatRepresentation(Sema *S, CallExpr *TheCall) {
   auto checkAllFloatTypes = [](clang::QualType PassedType) -> bool {
     return !PassedType->hasFloatingRepresentation();
   };
-  return CheckAllArgTypesAreCorrect(S, TheCall, S->Context.FloatTy,
-                                    checkAllFloatTypes);
+  return clang::Sema::CheckAllArgTypesAreCorrect(S, TheCall, S->Context.FloatTy,
+                                                 checkAllFloatTypes);
 }
 
 static bool CheckFloatOrHalfRepresentations(Sema *S, CallExpr *TheCall) {
@@ -2013,8 +2012,8 @@ static bool CheckFloatOrHalfRepresentations(Sema *S, CallExpr *TheCall) {
             : PassedType;
     return !BaseType->isHalfType() && !BaseType->isFloat32Type();
   };
-  return CheckAllArgTypesAreCorrect(S, TheCall, S->Context.FloatTy,
-                                    checkFloatorHalf);
+  return clang::Sema::CheckAllArgTypesAreCorrect(S, TheCall, S->Context.FloatTy,
+                                                 checkFloatorHalf);
 }
 
 static bool CheckModifiableLValue(Sema *S, CallExpr *TheCall,
@@ -2034,24 +2033,24 @@ static bool CheckNoDoubleVectors(Sema *S, CallExpr *TheCall) {
       return VecTy->getElementType()->isDoubleType();
     return false;
   };
-  return CheckAllArgTypesAreCorrect(S, TheCall, S->Context.FloatTy,
-                                    checkDoubleVector);
+  return clang::Sema::CheckAllArgTypesAreCorrect(S, TheCall, S->Context.FloatTy,
+                                                 checkDoubleVector);
 }
 static bool CheckFloatingOrIntRepresentation(Sema *S, CallExpr *TheCall) {
   auto checkAllSignedTypes = [](clang::QualType PassedType) -> bool {
     return !PassedType->hasIntegerRepresentation() &&
            !PassedType->hasFloatingRepresentation();
   };
-  return CheckAllArgTypesAreCorrect(S, TheCall, S->Context.IntTy,
-                                    checkAllSignedTypes);
+  return clang::Sema::CheckAllArgTypesAreCorrect(S, TheCall, S->Context.IntTy,
+                                                 checkAllSignedTypes);
 }
 
 static bool CheckUnsignedIntRepresentation(Sema *S, CallExpr *TheCall) {
   auto checkAllUnsignedTypes = [](clang::QualType PassedType) -> bool {
     return !PassedType->hasUnsignedIntegerRepresentation();
   };
-  return CheckAllArgTypesAreCorrect(S, TheCall, S->Context.UnsignedIntTy,
-                                    checkAllUnsignedTypes);
+  return clang::Sema::CheckAllArgTypesAreCorrect(
+      S, TheCall, S->Context.UnsignedIntTy, checkAllUnsignedTypes);
 }
 
 static void SetElementTypeAsReturnType(Sema *S, CallExpr *TheCall,
diff --git a/clang/lib/Sema/SemaSPIRV.cpp b/clang/lib/Sema/SemaSPIRV.cpp
index c55a68f8df531dd..dc091d3454e7ff1 100644
--- a/clang/lib/Sema/SemaSPIRV.cpp
+++ b/clang/lib/Sema/SemaSPIRV.cpp
@@ -10,7 +10,6 @@
 
 #include "clang/Sema/SemaSPIRV.h"
 #include "clang/Basic/TargetBuiltins.h"
-#include "clang/Sema/Common.h"
 #include "clang/Sema/Sema.h"
 
 namespace clang {
@@ -21,10 +20,10 @@ bool SemaSPIRV::CheckSPIRVBuiltinFunctionCall(unsigned BuiltinID,
                                               CallExpr *TheCall) {
   switch (BuiltinID) {
   case SPIRV::BI__builtin_spirv_distance: {
-    return CheckAllArgTypesAreCorrect(&SemaRef, TheCall, 2, 2);
+    return clang::Sema::CheckAllArgTypesAreCorrect(&SemaRef, TheCall, 2, 2);
   }
   case SPIRV::BI__builtin_spirv_length: {
-    return CheckAllArgTypesAreCorrect(&SemaRef, TheCall, 1, 2);
+    return clang::Sema::CheckAllArgTypesAreCorrect(&SemaRef, TheCall, 1, 2);
   }
   }
   return false;



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