| Paul Robinson | 9d6940b | 2016-01-04 17:03:58 +0000 | [diff] [blame^] | 1 | // RUN: %clang_cc1 < %s -triple i386-mingw32 -fms-extensions -emit-llvm -x c++ | FileCheck %s |
| 2 | |
| 3 | // optnone wins over inlinehint. |
| 4 | // Test that both func1 and func2 are marked optnone and noinline. |
| 5 | |
| 6 | // Definition with both optnone and inlinehint. |
| 7 | __attribute__((optnone)) |
| 8 | inline int func1(int a) { |
| 9 | return a + a + a + a; |
| 10 | } |
| 11 | // CHECK: @_Z5func1i({{.*}}) [[OPTNONE:#[0-9]+]] |
| 12 | |
| 13 | // optnone declaration, inlinehint definition. |
| 14 | __attribute__((optnone)) |
| 15 | int func2(int a); |
| 16 | |
| 17 | inline int func2(int a) { |
| 18 | return a + a + a + a; |
| 19 | } |
| 20 | // CHECK: @_Z5func2i({{.*}}) [[OPTNONE]] |
| 21 | |
| 22 | // Keep alive the definitions of func1 and func2. |
| 23 | int foo() { |
| 24 | int val = func1(1); |
| 25 | return val + func2(2); |
| 26 | } |
| 27 | |
| 28 | // optnone wins over minsize. |
| 29 | __attribute__((optnone)) |
| 30 | int func3(int a); |
| 31 | |
| 32 | __attribute__((minsize)) |
| 33 | int func3(int a) { |
| 34 | return a + a + a + a; |
| 35 | } |
| 36 | // Same attribute set as everything else, therefore no 'minsize'. |
| 37 | // CHECK: @_Z5func3i({{.*}}) [[OPTNONE]] |
| 38 | |
| 39 | |
| 40 | // Verify that noreturn is compatible with optnone. |
| 41 | __attribute__((noreturn)) |
| 42 | extern void exit_from_function(); |
| 43 | |
| 44 | __attribute__((noreturn)) __attribute((optnone)) |
| 45 | extern void noreturn_function(int a) { exit_from_function(); } |
| 46 | // CHECK: @_Z17noreturn_functioni({{.*}}) [[NORETURN:#[0-9]+]] |
| 47 | |
| 48 | |
| 49 | // Verify that __declspec(noinline) is compatible with optnone. |
| 50 | __declspec(noinline) __attribute__((optnone)) |
| 51 | void func4() { return; } |
| 52 | // CHECK: @_Z5func4v() [[OPTNONE]] |
| 53 | |
| 54 | __declspec(noinline) |
| 55 | extern void func5(); |
| 56 | |
| 57 | __attribute__((optnone)) |
| 58 | void func5() { return; } |
| 59 | // CHECK: @_Z5func5v() [[OPTNONE]] |
| 60 | |
| 61 | |
| 62 | // Verify also that optnone can be used on dllexport functions. |
| 63 | // Adding attribute optnone on a dllimport function has no effect. |
| 64 | |
| 65 | __attribute__((dllimport)) |
| 66 | __attribute__((optnone)) |
| 67 | int imported_optnone_func(int a); |
| 68 | |
| 69 | __attribute__((dllexport)) |
| 70 | __attribute__((optnone)) |
| 71 | int exported_optnone_func(int a) { |
| 72 | return imported_optnone_func(a); // use of imported func |
| 73 | } |
| 74 | // CHECK: @_Z21exported_optnone_funci({{.*}}) [[OPTNONE]] |
| 75 | // CHECK: declare dllimport {{.*}} @_Z21imported_optnone_funci({{.*}}) [[DLLIMPORT:#[0-9]+]] |
| 76 | |
| 77 | |
| 78 | // CHECK: attributes [[OPTNONE]] = { noinline {{.*}} optnone |
| 79 | // CHECK: attributes [[NORETURN]] = { noinline noreturn {{.*}} optnone |
| 80 | |
| 81 | // CHECK: attributes [[DLLIMPORT]] = |
| 82 | // CHECK-SAME-NOT: optnone |