| 1 | // RUN: %clang_cc1 %s -triple %itanium_abi_triple -fms-extensions -O2 -disable-llvm-passes -emit-llvm -o - | FileCheck %s |
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| 2 | |
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| 3 | // Test optnone on both function declarations and function definitions. |
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| 4 | // Verify also that we don't generate invalid IR functions with |
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| 5 | // both alwaysinline and noinline. (optnone implies noinline and wins |
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| 6 | // over alwaysinline, in all cases.) |
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| 7 | |
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| 8 | // Test optnone on extern declaration only. |
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| 9 | extern int decl_only(int a) __attribute__((optnone)); |
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| 10 | |
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| 11 | // This function should be marked 'optnone'. |
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| 12 | int decl_only(int a) { |
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| 13 | return a + a + a + a; |
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| 14 | } |
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| 15 | |
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| 16 | // CHECK: define {{.*}} @_Z9decl_onlyi({{.*}}) [[OPTNONE:#[0-9]+]] |
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| 17 | |
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| 18 | // Test optnone on definition but not extern declaration. |
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| 19 | extern int def_only(int a); |
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| 20 | |
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| 21 | __attribute__((optnone)) |
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| 22 | int def_only(int a) { |
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| 23 | return a + a + a + a; |
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| 24 | } |
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| 25 | |
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| 26 | // Function def_only is a optnone function and therefore it should not be |
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| 27 | // inlined inside 'user_of_def_only'. |
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| 28 | int user_of_def_only() { |
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| 29 | return def_only(5); |
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| 30 | } |
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| 31 | |
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| 32 | // CHECK: define {{.*}} @_Z8def_onlyi({{.*}}) [[OPTNONE]] |
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| 33 | // CHECK: define {{.*}} @_Z16user_of_def_onlyv() [[NORMAL:#[0-9]+]] |
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| 34 | |
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| 35 | // Test optnone on both definition and declaration. |
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| 36 | extern int def_and_decl(int a) __attribute__((optnone)); |
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| 37 | |
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| 38 | __attribute__((optnone)) |
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| 39 | int def_and_decl(int a) { |
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| 40 | return a + a + a + a; |
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| 41 | } |
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| 42 | |
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| 43 | // CHECK: define {{.*}} @_Z12def_and_decli({{.*}}) [[OPTNONE]] |
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| 44 | |
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| 45 | // Check that optnone wins over always_inline. |
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| 46 | |
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| 47 | // Test optnone on definition and always_inline on declaration. |
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| 48 | extern int always_inline_function(int a) __attribute__((always_inline)); |
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| 49 | |
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| 50 | __attribute__((optnone)) |
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| 51 | extern int always_inline_function(int a) { |
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| 52 | return a + a + a + a; |
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| 53 | } |
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| 54 | // CHECK: define {{.*}} @_Z22always_inline_functioni({{.*}}) [[OPTNONE]] |
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| 55 | |
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| 56 | int user_of_always_inline_function() { |
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| 57 | return always_inline_function(4); |
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| 58 | } |
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| 59 | |
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| 60 | // CHECK: define {{.*}} @_Z30user_of_always_inline_functionv() [[NORMAL]] |
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| 61 | |
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| 62 | // Test optnone on declaration and always_inline on definition. |
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| 63 | extern int optnone_function(int a) __attribute__((optnone)); |
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| 64 | |
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| 65 | __attribute__((always_inline)) |
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| 66 | int optnone_function(int a) { |
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| 67 | return a + a + a + a; |
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| 68 | } |
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| 69 | // CHECK: define {{.*}} @_Z16optnone_functioni({{.*}}) [[OPTNONE]] |
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| 70 | |
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| 71 | int user_of_optnone_function() { |
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| 72 | return optnone_function(4); |
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| 73 | } |
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| 74 | |
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| 75 | // CHECK: define {{.*}} @_Z24user_of_optnone_functionv() [[NORMAL]] |
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| 76 | |
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| 77 | // Test the combination of optnone with forceinline (optnone wins). |
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| 78 | extern __forceinline int forceinline_optnone_function(int a, int b); |
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| 79 | |
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| 80 | __attribute__((optnone)) |
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| 81 | extern int forceinline_optnone_function(int a, int b) { |
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| 82 | return a + b; |
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| 83 | } |
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| 84 | |
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| 85 | int user_of_forceinline_optnone_function() { |
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| 86 | return forceinline_optnone_function(4,5); |
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| 87 | } |
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| 88 | |
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| 89 | // CHECK: @_Z36user_of_forceinline_optnone_functionv() [[NORMAL]] |
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| 90 | // CHECK: @_Z28forceinline_optnone_functionii({{.*}}) [[OPTNONE]] |
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| 91 | |
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| 92 | // CHECK: attributes [[OPTNONE]] = { noinline nounwind optnone {{.*}} } |
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| 93 | // CHECK: attributes [[NORMAL]] = |
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| 94 | // CHECK-NOT: noinline |
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| 95 | // CHECK-NOT: optnone |
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| 96 | |
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