https://github.com/jmmartinez created https://github.com/llvm/llvm-project/pull/165387
[HIP] Perform implicit pointer cast when compiling device code, not when -fcuda-is-device When compiling HIP device code, we add implicit casts for the pointer arguments being passed to builtin calls. When compiling for the host, apply the same casts for __device__ or __kernel__ functions, since the device side of the source should still pass type checks. This patch changes the condition depending on -fcuda-is-device to depend on if the builtin's caller is marked as __device__ or __kernel__. From dac020c6c2cf10ab3963ae8c236851d869f6ae1d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Juan=20Manuel=20Martinez=20Caama=C3=B1o?= <[email protected]> Date: Tue, 28 Oct 2025 11:46:03 +0100 Subject: [PATCH] [HIP] Perform implicit pointer cast when compiling device code, not when -fcuda-is-device When compiling HIP device code, we add implicit casts for the pointer arguments being passed to builtin calls. When compiling for the host, apply the same casts for __device__ or __kernel__ functions, since the device side of the source should still pass type checks. This patch changes the condition depending on -fcuda-is-device to depend on if the builtin's caller is marked as __device__ or __kernel__. --- clang/lib/Sema/SemaExpr.cpp | 6 +++-- .../SemaHIP/amdgpu-gfx950-load-to-lds.hip | 26 +++++++++---------- 2 files changed, 17 insertions(+), 15 deletions(-) diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp index a50c27610dc96..1d1b0f5c75905 100644 --- a/clang/lib/Sema/SemaExpr.cpp +++ b/clang/lib/Sema/SemaExpr.cpp @@ -6734,8 +6734,10 @@ ExprResult Sema::BuildCallExpr(Scope *Scope, Expr *Fn, SourceLocation LParenLoc, // If Arg is declared in the default address space and Param is declared // in a non-default address space, perform an implicit address space cast to // the parameter type. - if (getLangOpts().HIP && getLangOpts().CUDAIsDevice && FD && - FD->getBuiltinID()) { + FunctionDecl *Caller = getCurFunctionDecl(/*AllowLambda =*/true); + bool CallerIsDevice = Caller && (Caller->hasAttr<CUDAGlobalAttr>() || + Caller->hasAttr<CUDADeviceAttr>()); + if (getLangOpts().HIP && CallerIsDevice && FD && FD->getBuiltinID()) { for (unsigned Idx = 0; Idx < ArgExprs.size() && Idx < FD->param_size(); ++Idx) { ParmVarDecl *Param = FD->getParamDecl(Idx); diff --git a/clang/test/SemaHIP/amdgpu-gfx950-load-to-lds.hip b/clang/test/SemaHIP/amdgpu-gfx950-load-to-lds.hip index 366278f648939..b49c1866caa1c 100644 --- a/clang/test/SemaHIP/amdgpu-gfx950-load-to-lds.hip +++ b/clang/test/SemaHIP/amdgpu-gfx950-load-to-lds.hip @@ -1,7 +1,7 @@ // REQUIRES: amdgpu-registered-target -// RUN: %clang_cc1 -fsyntax-only -triple amdgcn -target-cpu gfx950 -verify=device %s -fcuda-is-device -// RUN: %clang_cc1 -fsyntax-only -triple x86_64 -aux-triple amdgcn -verify=host %s -// device-no-diagnostics +// RUN: %clang_cc1 -fsyntax-only -triple amdgcn -target-cpu gfx950 -verify %s -fcuda-is-device +// RUN: %clang_cc1 -fsyntax-only -triple x86_64 -aux-triple amdgcn -verify %s +// expected-no-diagnostics #define __device__ __attribute__((device)) #define __global__ __attribute__((global)) @@ -20,11 +20,11 @@ __device__ void i_am_device(void* src, __amdgpu_buffer_rsrc_t rsrc, __shared__ v __builtin_amdgcn_struct_ptr_buffer_load_lds(rsrc, dst, 12, vindex, voffset, soffset, 0, 0); __builtin_amdgcn_struct_ptr_buffer_load_lds(rsrc, dst, 16, vindex, voffset, soffset, 0, 0); - __builtin_amdgcn_load_to_lds(src, dst, 1, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} - __builtin_amdgcn_load_to_lds(src, dst, 2, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} - __builtin_amdgcn_load_to_lds(src, dst, 4, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} - __builtin_amdgcn_load_to_lds(src, dst, 12, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} - __builtin_amdgcn_load_to_lds(src, dst, 16, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} + __builtin_amdgcn_load_to_lds(src, dst, 1, 0, 0); + __builtin_amdgcn_load_to_lds(src, dst, 2, 0, 0); + __builtin_amdgcn_load_to_lds(src, dst, 4, 0, 0); + __builtin_amdgcn_load_to_lds(src, dst, 12, 0, 0); + __builtin_amdgcn_load_to_lds(src, dst, 16, 0, 0); __builtin_amdgcn_global_load_lds(src, dst, 1, 0 , 0); __builtin_amdgcn_global_load_lds(src, dst, 2, 0 , 0); @@ -46,11 +46,11 @@ __global__ void i_am_kernel(void* src, __amdgpu_buffer_rsrc_t rsrc, __shared__ v __builtin_amdgcn_struct_ptr_buffer_load_lds(rsrc, dst, 12, vindex, voffset, soffset, 0, 0); __builtin_amdgcn_struct_ptr_buffer_load_lds(rsrc, dst, 16, vindex, voffset, soffset, 0, 0); - __builtin_amdgcn_load_to_lds(src, dst, 1, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} - __builtin_amdgcn_load_to_lds(src, dst, 2, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} - __builtin_amdgcn_load_to_lds(src, dst, 4, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} - __builtin_amdgcn_load_to_lds(src, dst, 12, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} - __builtin_amdgcn_load_to_lds(src, dst, 16, 0, 0); // host-error{{cannot initialize a parameter of type '__attribute__((address_space(3))) void *' with an lvalue of type 'void *'}} + __builtin_amdgcn_load_to_lds(src, dst, 1, 0, 0); + __builtin_amdgcn_load_to_lds(src, dst, 2, 0, 0); + __builtin_amdgcn_load_to_lds(src, dst, 4, 0, 0); + __builtin_amdgcn_load_to_lds(src, dst, 12, 0, 0); + __builtin_amdgcn_load_to_lds(src, dst, 16, 0, 0); __builtin_amdgcn_global_load_lds(src, dst, 1, 0 , 0); __builtin_amdgcn_global_load_lds(src, dst, 2, 0 , 0); _______________________________________________ cfe-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
