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llvm-project/clang/test/CodeGenCXX/address-space-cast.cpp

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Sema: Fix explicit address space cast in C++ Currently clang does not allow implicit cast of a pointer to a pointer type in different address space but allows C-style cast of a pointer to a pointer type in different address space. However, there is a bug in Sema causing incorrect Cast Expr in AST for the latter case, which in turn results in invalid LLVM IR in codegen. This is because Sema::IsQualificationConversion returns true for a cast of pointer to a pointer type in different address space, which in turn allows a standard conversion and results in a cast expression with no op in AST. This patch fixes that by let Sema::IsQualificationConversion returns false for a cast of pointer to a pointer type in different address space, which in turn disallows standard conversion, implicit cast, and static cast. Finally it results in an reinterpret cast and correct conversion kind is set. Differential Revision: https://reviews.llvm.org/D49294 llvm-svn: 337540
2018-07-20 19:32:51 +08:00
// RUN: %clang_cc1 %s -triple=amdgcn-amd-amdhsa -emit-llvm -o - | FileCheck %s
#define __private__ __attribute__((address_space(5)))
void func_pchar(__private__ char *x);
Sema: Fix explicit address space cast involving void pointers Explicit cast of a void pointer to a pointer type in different address space is incorrectly classified as bitcast, which causes invalid bitcast in codegen. The patch fixes that by checking the address space of the source and destination type and set the correct cast kind. Differential Revision: https://reviews.llvm.org/D50003 llvm-svn: 338805
2018-08-03 11:18:56 +08:00
void func_pvoid(__private__ void *x);
void func_pint(__private__ int *x);
Sema: Fix explicit address space cast in C++ Currently clang does not allow implicit cast of a pointer to a pointer type in different address space but allows C-style cast of a pointer to a pointer type in different address space. However, there is a bug in Sema causing incorrect Cast Expr in AST for the latter case, which in turn results in invalid LLVM IR in codegen. This is because Sema::IsQualificationConversion returns true for a cast of pointer to a pointer type in different address space, which in turn allows a standard conversion and results in a cast expression with no op in AST. This patch fixes that by let Sema::IsQualificationConversion returns false for a cast of pointer to a pointer type in different address space, which in turn disallows standard conversion, implicit cast, and static cast. Finally it results in an reinterpret cast and correct conversion kind is set. Differential Revision: https://reviews.llvm.org/D49294 llvm-svn: 337540
2018-07-20 19:32:51 +08:00
Sema: Fix explicit address space cast involving void pointers Explicit cast of a void pointer to a pointer type in different address space is incorrectly classified as bitcast, which causes invalid bitcast in codegen. The patch fixes that by checking the address space of the source and destination type and set the correct cast kind. Differential Revision: https://reviews.llvm.org/D50003 llvm-svn: 338805
2018-08-03 11:18:56 +08:00
void test_cast(char *gen_char_ptr, void *gen_void_ptr, int *gen_int_ptr) {
Sema: Fix explicit address space cast in C++ Currently clang does not allow implicit cast of a pointer to a pointer type in different address space but allows C-style cast of a pointer to a pointer type in different address space. However, there is a bug in Sema causing incorrect Cast Expr in AST for the latter case, which in turn results in invalid LLVM IR in codegen. This is because Sema::IsQualificationConversion returns true for a cast of pointer to a pointer type in different address space, which in turn allows a standard conversion and results in a cast expression with no op in AST. This patch fixes that by let Sema::IsQualificationConversion returns false for a cast of pointer to a pointer type in different address space, which in turn disallows standard conversion, implicit cast, and static cast. Finally it results in an reinterpret cast and correct conversion kind is set. Differential Revision: https://reviews.llvm.org/D49294 llvm-svn: 337540
2018-07-20 19:32:51 +08:00
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: store i8 addrspace(5)* %[[cast]]
Sema: Fix explicit address space cast involving void pointers Explicit cast of a void pointer to a pointer type in different address space is incorrectly classified as bitcast, which causes invalid bitcast in codegen. The patch fixes that by checking the address space of the source and destination type and set the correct cast kind. Differential Revision: https://reviews.llvm.org/D50003 llvm-svn: 338805
2018-08-03 11:18:56 +08:00
__private__ char *priv_char_ptr = (__private__ char *)gen_char_ptr;
Sema: Fix explicit address space cast in C++ Currently clang does not allow implicit cast of a pointer to a pointer type in different address space but allows C-style cast of a pointer to a pointer type in different address space. However, there is a bug in Sema causing incorrect Cast Expr in AST for the latter case, which in turn results in invalid LLVM IR in codegen. This is because Sema::IsQualificationConversion returns true for a cast of pointer to a pointer type in different address space, which in turn allows a standard conversion and results in a cast expression with no op in AST. This patch fixes that by let Sema::IsQualificationConversion returns false for a cast of pointer to a pointer type in different address space, which in turn disallows standard conversion, implicit cast, and static cast. Finally it results in an reinterpret cast and correct conversion kind is set. Differential Revision: https://reviews.llvm.org/D49294 llvm-svn: 337540
2018-07-20 19:32:51 +08:00
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i8 addrspace(5)*
Sema: Fix explicit address space cast involving void pointers Explicit cast of a void pointer to a pointer type in different address space is incorrectly classified as bitcast, which causes invalid bitcast in codegen. The patch fixes that by checking the address space of the source and destination type and set the correct cast kind. Differential Revision: https://reviews.llvm.org/D50003 llvm-svn: 338805
2018-08-03 11:18:56 +08:00
// CHECK-NEXT: store i8 addrspace(5)* %[[cast]]
priv_char_ptr = (__private__ char *)gen_void_ptr;
// CHECK: %[[cast:.*]] = addrspacecast i32* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: store i8 addrspace(5)* %[[cast]]
priv_char_ptr = (__private__ char *)gen_int_ptr;
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: store i8 addrspace(5)* %[[cast]]
__private__ void *priv_void_ptr = (__private__ void *)gen_char_ptr;
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: store i8 addrspace(5)* %[[cast]]
priv_void_ptr = (__private__ void *)gen_void_ptr;
// CHECK: %[[cast:.*]] = addrspacecast i32* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: store i8 addrspace(5)* %[[cast]]
priv_void_ptr = (__private__ void *)gen_int_ptr;
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i32 addrspace(5)*
// CHECK-NEXT: store i32 addrspace(5)* %[[cast]]
__private__ int *priv_int_ptr = (__private__ int *)gen_void_ptr;
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: call void @_Z10func_pcharPU3AS5c(i8 addrspace(5)* %[[cast]])
func_pchar((__private__ char *)gen_char_ptr);
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: call void @_Z10func_pcharPU3AS5c(i8 addrspace(5)* %[[cast]])
func_pchar((__private__ char *)gen_void_ptr);
// CHECK: %[[cast:.*]] = addrspacecast i32* %{{.*}} to i8 addrspace(5)*
Sema: Fix explicit address space cast in C++ Currently clang does not allow implicit cast of a pointer to a pointer type in different address space but allows C-style cast of a pointer to a pointer type in different address space. However, there is a bug in Sema causing incorrect Cast Expr in AST for the latter case, which in turn results in invalid LLVM IR in codegen. This is because Sema::IsQualificationConversion returns true for a cast of pointer to a pointer type in different address space, which in turn allows a standard conversion and results in a cast expression with no op in AST. This patch fixes that by let Sema::IsQualificationConversion returns false for a cast of pointer to a pointer type in different address space, which in turn disallows standard conversion, implicit cast, and static cast. Finally it results in an reinterpret cast and correct conversion kind is set. Differential Revision: https://reviews.llvm.org/D49294 llvm-svn: 337540
2018-07-20 19:32:51 +08:00
// CHECK-NEXT: call void @_Z10func_pcharPU3AS5c(i8 addrspace(5)* %[[cast]])
Sema: Fix explicit address space cast involving void pointers Explicit cast of a void pointer to a pointer type in different address space is incorrectly classified as bitcast, which causes invalid bitcast in codegen. The patch fixes that by checking the address space of the source and destination type and set the correct cast kind. Differential Revision: https://reviews.llvm.org/D50003 llvm-svn: 338805
2018-08-03 11:18:56 +08:00
func_pchar((__private__ char *)gen_int_ptr);
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: call void @_Z10func_pvoidPU3AS5v(i8 addrspace(5)* %[[cast]])
func_pvoid((__private__ void *)gen_char_ptr);
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: call void @_Z10func_pvoidPU3AS5v(i8 addrspace(5)* %[[cast]])
func_pvoid((__private__ void *)gen_void_ptr);
// CHECK: %[[cast:.*]] = addrspacecast i32* %{{.*}} to i8 addrspace(5)*
// CHECK-NEXT: call void @_Z10func_pvoidPU3AS5v(i8 addrspace(5)* %[[cast]])
func_pvoid((__private__ void *)gen_int_ptr);
// CHECK: %[[cast:.*]] = addrspacecast i8* %{{.*}} to i32 addrspace(5)*
// CHECK-NEXT: call void @_Z9func_pintPU3AS5i(i32 addrspace(5)* %[[cast]])
func_pint((__private__ int *)gen_void_ptr);
Sema: Fix explicit address space cast in C++ Currently clang does not allow implicit cast of a pointer to a pointer type in different address space but allows C-style cast of a pointer to a pointer type in different address space. However, there is a bug in Sema causing incorrect Cast Expr in AST for the latter case, which in turn results in invalid LLVM IR in codegen. This is because Sema::IsQualificationConversion returns true for a cast of pointer to a pointer type in different address space, which in turn allows a standard conversion and results in a cast expression with no op in AST. This patch fixes that by let Sema::IsQualificationConversion returns false for a cast of pointer to a pointer type in different address space, which in turn disallows standard conversion, implicit cast, and static cast. Finally it results in an reinterpret cast and correct conversion kind is set. Differential Revision: https://reviews.llvm.org/D49294 llvm-svn: 337540
2018-07-20 19:32:51 +08:00
}