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606bd6dcc5
It turns out that MinGW never dllimports of exports inline functions. This means that code compiled with Clang would fail to link with MinGW-compiled libraries since we might try to import functions that are not imported. To fix this, make Clang never dllimport inline functions when targeting MinGW. llvm-svn: 221154
130 lines
5.1 KiB
C
130 lines
5.1 KiB
C
// RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=MS %s
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// RUN: %clang_cc1 -triple x86_64-windows-msvc -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=MS %s
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// RUN: %clang_cc1 -triple i686-windows-gnu -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=GNU %s
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// RUN: %clang_cc1 -triple x86_64-windows-gnu -emit-llvm -std=c11 -O0 -o - %s | FileCheck --check-prefix=CHECK --check-prefix=GNU %s
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// RUN: %clang_cc1 -triple i686-windows-msvc -emit-llvm -std=c11 -O1 -o - %s | FileCheck --check-prefix=O1 --check-prefix=MO1 %s
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// RUN: %clang_cc1 -triple i686-windows-gnu -emit-llvm -std=c11 -O1 -o - %s | FileCheck --check-prefix=O1 --check-prefix=GO1 %s
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#define JOIN2(x, y) x##y
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#define JOIN(x, y) JOIN2(x, y)
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#define USEVAR(var) int JOIN(use, __LINE__)() { return var; }
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#define USE(func) void JOIN(use, __LINE__)() { func(); }
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//===----------------------------------------------------------------------===//
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// Globals
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//===----------------------------------------------------------------------===//
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// Import declaration.
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// CHECK: @ExternGlobalDecl = external dllimport global i32
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__declspec(dllimport) extern int ExternGlobalDecl;
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USEVAR(ExternGlobalDecl)
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// dllimport implies a declaration.
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// CHECK: @GlobalDecl = external dllimport global i32
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__declspec(dllimport) int GlobalDecl;
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USEVAR(GlobalDecl)
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// Redeclarations
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// CHECK: @GlobalRedecl1 = external dllimport global i32
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__declspec(dllimport) extern int GlobalRedecl1;
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__declspec(dllimport) extern int GlobalRedecl1;
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USEVAR(GlobalRedecl1)
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// CHECK: @GlobalRedecl2 = external dllimport global i32
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__declspec(dllimport) int GlobalRedecl2;
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__declspec(dllimport) int GlobalRedecl2;
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USEVAR(GlobalRedecl2)
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// NB: MSVC issues a warning and makes GlobalRedecl3 dllexport. We follow GCC
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// and drop the dllimport with a warning.
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// CHECK: @GlobalRedecl3 = external global i32
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__declspec(dllimport) extern int GlobalRedecl3;
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extern int GlobalRedecl3; // dllimport ignored
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USEVAR(GlobalRedecl3)
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// Make sure this works even if the decl has been used before it's defined (PR20792).
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// CHECK: @GlobalRedecl4 = common global i32
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__declspec(dllimport) extern int GlobalRedecl4;
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USEVAR(GlobalRedecl4)
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int GlobalRedecl4; // dllimport ignored
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// FIXME: dllimport is dropped in the AST; this should be reflected in codegen (PR02803).
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// CHECK: @GlobalRedecl5 = external dllimport global i32
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__declspec(dllimport) extern int GlobalRedecl5;
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USEVAR(GlobalRedecl5)
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extern int GlobalRedecl5; // dllimport ignored
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// Redeclaration in local context.
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// CHECK: @GlobalRedecl6 = external dllimport global i32
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__declspec(dllimport) int GlobalRedecl6;
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int functionScope() {
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extern int GlobalRedecl6; // still dllimport
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return GlobalRedecl6;
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}
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//===----------------------------------------------------------------------===//
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// Functions
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//===----------------------------------------------------------------------===//
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// Import function declaration.
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// CHECK-DAG: declare dllimport void @decl()
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__declspec(dllimport) void decl(void);
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// Initialize use_decl with the address of the thunk.
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// CHECK-DAG: @use_decl = global void ()* @decl
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void (*use_decl)(void) = &decl;
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// Import inline function.
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// MS-DAG: declare dllimport void @inlineFunc()
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// MO1-DAG: define available_externally dllimport void @inlineFunc()
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// GNU-DAG: declare void @inlineFunc()
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// GO1-DAG: define available_externally void @inlineFunc()
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__declspec(dllimport) inline void inlineFunc(void) {}
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USE(inlineFunc)
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// inline attributes
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// MS-DAG: declare dllimport void @noinline()
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// MO1-DAG: define available_externally dllimport void @noinline()
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// GNU-DAG: declare void @noinline()
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// GO1-DAG: define available_externally void @noinline()
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// CHECK-NOT: @alwaysInline()
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// O1-NOT: @alwaysInline()
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__declspec(dllimport) __attribute__((noinline)) inline void noinline(void) {}
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__declspec(dllimport) __attribute__((always_inline)) inline void alwaysInline(void) {}
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USE(noinline)
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USE(alwaysInline)
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// Redeclarations
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// CHECK-DAG: declare dllimport void @redecl1()
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__declspec(dllimport) void redecl1(void);
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__declspec(dllimport) void redecl1(void);
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USE(redecl1)
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// NB: MSVC issues a warning and makes redecl2/redecl3 dllexport. We follow GCC
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// and drop the dllimport with a warning.
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// CHECK-DAG: declare void @redecl2()
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__declspec(dllimport) void redecl2(void);
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void redecl2(void);
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USE(redecl2)
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// CHECK-DAG: define void @redecl3()
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__declspec(dllimport) void redecl3(void);
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void redecl3(void) {} // dllimport ignored
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USE(redecl3)
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// Make sure this works even if the decl is used before it's defined (PR20792).
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// CHECK-DAG: define void @redecl4()
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__declspec(dllimport) void redecl4(void);
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USE(redecl4)
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void redecl4(void) {} // dllimport ignored
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// FIXME: dllimport is dropped in the AST; this should be reflected in codegen (PR20803).
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// CHECK-DAG: declare dllimport
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__declspec(dllimport) void redecl5(void);
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USE(redecl5)
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void redecl5(void); // dllimport ignored
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