Add CUDAKernelCallExpr Clone function

kchristin22 · Nov 6, 2024 · dc74261 · dc74261
1 parent c874ca5
commit dc74261
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Showing 4 changed files with 43 additions and 24 deletions.
diff --git a/include/clad/Differentiator/Compatibility.h b/include/clad/Differentiator/Compatibility.h
@@ -178,7 +178,7 @@ static inline IfStmt* IfStmt_Create(const ASTContext &Ctx,
 #endif
 }
 
-// Compatibility helper function for creation CallExpr.
+// Compatibility helper function for creation CallExpr and CUDAKernelCallExpr.
 // Clang 12 and above use one extra param.
 
 #if CLANG_VERSION_MAJOR < 12
@@ -188,13 +188,32 @@ static inline CallExpr* CallExpr_Create(const ASTContext &Ctx, Expr *Fn, ArrayRe
 {
    return CallExpr::Create(Ctx, Fn, Args, Ty, VK, RParenLoc, MinNumArgs, UsesADL);
 }
+
+static inline CUDAKernelCallExpr*
+CUDAKernelCallExpr_Create(const ASTContext& Ctx, Expr* Fn, CallExpr* Config,
+                          ArrayRef<Expr*> Args, QualType Ty, ExprValueKind VK,
+                          SourceLocation RParenLoc, unsigned MinNumArgs = 0,
+                          CallExpr::ADLCallKind UsesADL = CallExpr::NotADL) {
+  return CUDAKernelCallExpr::Create(Ctx, Fn, Config, Args, Ty, VK, RParenLoc,
+                                    MinNumArgs);
+}
 #elif CLANG_VERSION_MAJOR >= 12
 static inline CallExpr* CallExpr_Create(const ASTContext &Ctx, Expr *Fn, ArrayRef< Expr *> Args,
    QualType Ty, ExprValueKind VK, SourceLocation RParenLoc, FPOptionsOverride FPFeatures,
    unsigned MinNumArgs = 0, CallExpr::ADLCallKind UsesADL = CallExpr::NotADL)
 {
    return CallExpr::Create(Ctx, Fn, Args, Ty, VK, RParenLoc, FPFeatures, MinNumArgs, UsesADL);
 }
+
+static inline CUDAKernelCallExpr*
+CUDAKernelCallExpr_Create(const ASTContext& Ctx, Expr* Fn, CallExpr* Config,
+                          ArrayRef<Expr*> Args, QualType Ty, ExprValueKind VK,
+                          SourceLocation RParenLoc,
+                          FPOptionsOverride FPFeatures, unsigned MinNumArgs = 0,
+                          CallExpr::ADLCallKind UsesADL = CallExpr::NotADL) {
+  return CUDAKernelCallExpr::Create(Ctx, Fn, Config, Args, Ty, VK, RParenLoc,
+                                    FPFeatures, MinNumArgs);
+}
 #endif
 
 // Clang 12 and above use one extra param.

diff --git a/include/clad/Differentiator/StmtClone.h b/include/clad/Differentiator/StmtClone.h
@@ -104,6 +104,7 @@ namespace utils {
     DECLARE_CLONE_FN(ExtVectorElementExpr)
     DECLARE_CLONE_FN(UnaryExprOrTypeTraitExpr)
     DECLARE_CLONE_FN(CallExpr)
+    DECLARE_CLONE_FN(CUDAKernelCallExpr)
     DECLARE_CLONE_FN(ShuffleVectorExpr)
     DECLARE_CLONE_FN(ExprWithCleanups)
     DECLARE_CLONE_FN(CXXOperatorCallExpr)

diff --git a/lib/Differentiator/ReverseModeVisitor.cpp b/lib/Differentiator/ReverseModeVisitor.cpp
@@ -1930,15 +1930,7 @@ Expr* getArraySizeExpr(const ArrayType* AT, ASTContext& context,
             diag(DiagnosticsEngine::Error, CE->getEndLoc(),
                  "Failed to create cudaMemcpy call; cudaMemcpyDeviceToHost not "
                  "found. Creating kernel pullback aborted.");
-            for (std::size_t a = 0; a < CE->getNumArgs(); ++a)
-              CallArgs.push_back(
-                  Clone(CE->getArg(a))); // create a non-const copy
-            Expr* call =
-                m_Sema
-                    .ActOnCallExpr(getCurrentScope(), Clone(CE->getCallee()),
-                                   Loc, CallArgs, Loc, CUDAExecConfig)
-                    .get();
-            return StmtDiff(call);
+            return Clone(CE);
           }
           CXXScopeSpec SS;
           Expr* deviceToHostExpr =
@@ -1947,20 +1939,12 @@ Expr* getArraySizeExpr(const ArrayType* AT, ASTContext& context,
                                             /*ADL=*/false)
                   .get();
           if (!deviceToHostExpr) {
-            diag(
-                DiagnosticsEngine::Error, CE->getEndLoc(),
-                "Failed to create cudaMemcpy call; Failed to create expression "
-                "for cudaMemcpyDeviceToHost. Creating kernel pullback "
-                "aborted.");
-            for (std::size_t a = 0; a < CE->getNumArgs(); ++a)
-              CallArgs.push_back(
-                  Clone(CE->getArg(a))); // create a non-const copy
-            Expr* call =
-                m_Sema
-                    .ActOnCallExpr(getCurrentScope(), Clone(CE->getCallee()),
-                                   Loc, CallArgs, Loc, CUDAExecConfig)
-                    .get();
-            return StmtDiff(call);
+            diag(DiagnosticsEngine::Error, CE->getEndLoc(),
+                 "Failed to create cudaMemcpy call; Failed to create "
+                 "expression "
+                 "for cudaMemcpyDeviceToHost. Creating kernel pullback "
+                 "aborted.");
+            return Clone(CE);
           }
 
           // Add calls to cudaMalloc, cudaMemset, cudaMemcpy, and cudaFree

diff --git a/lib/Differentiator/StmtClone.cpp b/lib/Differentiator/StmtClone.cpp
@@ -327,6 +327,21 @@ Stmt* StmtClone::VisitCallExpr(CallExpr* Node) {
   return result;
 }
 
+Stmt* StmtClone::VisitCUDAKernelCallExpr(CUDAKernelCallExpr* Node) {
+  CUDAKernelCallExpr* result = clad_compat::CUDAKernelCallExpr_Create(
+      Ctx, Clone(Node->getCallee()), Clone(Node->getConfig()),
+      llvm::ArrayRef<Expr*>(), CloneType(Node->getType()), Node->getValueKind(),
+      Node->getRParenLoc() CLAD_COMPAT_CLANG8_CallExpr_ExtraParams);
+  result->setNumArgsUnsafe(Node->getNumArgs());
+  for (unsigned i = 0, e = Node->getNumArgs(); i < e; ++i)
+    result->setArg(i, Clone(Node->getArg(i)));
+
+  // Copy Value and Type dependent
+  clad_compat::ExprSetDeps(result, Node);
+
+  return result;
+}
+
 Stmt* StmtClone::VisitUnresolvedLookupExpr(UnresolvedLookupExpr* Node) {
   TemplateArgumentListInfo TemplateArgs;
   if (Node->hasExplicitTemplateArgs())