1; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/callback-external-addr.perfscript --binary=%S/Inputs/callback-external-addr.perfbin --output=%t --skip-symbolization 2; RUN: FileCheck %s --input-file %t --check-prefix=CHECK-UNWINDER 3 4; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/callback-external-addr.perfscript --binary=%S/Inputs/callback-external-addr.perfbin --output=%t --profile-summary-cold-count=0 --csspgo-preinliner=0 --gen-cs-nested-profile=0 5; RUN: FileCheck %s --input-file %t 6 7; Test if call stack is correctly truncated. 8; CHECK-UNWINDER-NOT: main:3 @ bar 9; CHECK-UNWINDER-NOT: main:3 @ foo 10; CHECK-UNWINDER-NOT: qux:3 @ baz 11; CHECK-UNWINDER-NOT: qux:3 @ bar 12 13; Test if return to wrong internal target 14; CHECK-UNWINDER-NOT: baz:0 @ bar 15; CHECK-UNWINDER-NOT: bar:0 @ baz 16; CHECK-UNWINDER-NOT: baz:0 @ main 17; CHECK-UNWINDER-NOT: bar:0 @ foo 18; CHECK-UNWINDER-NOT: baz:0 @ qux 19 20; Test for callback return from internal address to external address. 21; [foo:2 @ qux:2 @ callBeforeReturn] and [foo:2 @ qux:4 @ callAfterReturn] should exist 22; which means the callback return won't interrupt the previous call stack 23 24 25; CHECK-UNWINDER: [] 26; CHECK-UNWINDER: 0 27; CHECK-UNWINDER: 5 28; CHECK-UNWINDER: ffffffffffc00001->690:13 29; CHECK-UNWINDER: ffffffffffc00001->6a0:7 30; CHECK-UNWINDER: ffffffffffc00001->715:7 31; CHECK-UNWINDER: ffffffffffc00001->730:5 32; CHECK-UNWINDER: ffffffffffc00001->7b0:5 33; CHECK-UNWINDER: [bar] 34; CHECK-UNWINDER: 1 35; CHECK-UNWINDER: 690-69e:13 36; CHECK-UNWINDER: 0 37; CHECK-UNWINDER: [baz] 38; CHECK-UNWINDER: 1 39; CHECK-UNWINDER: 6a0-6ae:7 40; CHECK-UNWINDER: 0 41; CHECK-UNWINDER: [foo] 42; CHECK-UNWINDER: 2 43; CHECK-UNWINDER: 730-747:5 44; CHECK-UNWINDER: 74c-751:5 45; CHECK-UNWINDER: 1 46; CHECK-UNWINDER: 747->6d0:5 47; CHECK-UNWINDER: [foo:2 @ qux] 48; CHECK-UNWINDER: 4 49; CHECK-UNWINDER: 6d0-6e7:5 50; CHECK-UNWINDER: 6ec-710:6 51; CHECK-UNWINDER: 715-71b:7 52; CHECK-UNWINDER: 720-72b:6 53; CHECK-UNWINDER: 3 54; CHECK-UNWINDER: 6e7->6b0:6 55; CHECK-UNWINDER: 71b->6c0:7 56; CHECK-UNWINDER: 72b->74c:6 57; CHECK-UNWINDER: [foo:2 @ qux:2 @ callBeforeReturn] 58; CHECK-UNWINDER: 1 59; CHECK-UNWINDER: 6b0-6be:6 60; CHECK-UNWINDER: 1 61; CHECK-UNWINDER: 6be->6ec:7 62; CHECK-UNWINDER: [foo:2 @ qux:4 @ callAfterReturn] 63; CHECK-UNWINDER: 1 64; CHECK-UNWINDER: 6c0-6ce:7 65; CHECK-UNWINDER: 1 66; CHECK-UNWINDER: 6ce->720:7 67; CHECK-UNWINDER: [main] 68; CHECK-UNWINDER: 2 69; CHECK-UNWINDER: 77d-7ab:5 70; CHECK-UNWINDER: 7b0-7bf:5 71; CHECK-UNWINDER: 1 72; CHECK-UNWINDER: 7bf->77d:5 73 74; CHECK: [foo:2 @ qux]:132:5 75; CHECK: 0: 5 76; CHECK: 1: 5 77; CHECK: 2: 6 callBeforeReturn:6 78; CHECK: 3: 7 79; CHECK: 4: 7 callAfterReturn:7 80; CHECK: 5: 6 81; CHECK: [bar]:91:13 82; CHECK: 0: 13 83; CHECK: 1: 13 84; CHECK: [main]:65:0 85; CHECK: 2.1: 5 86; CHECK: 2.2: 5 87; CHECK: 3: 5 88; CHECK: [foo]:60:5 89; CHECK: 0: 5 90; CHECK: 1: 5 91; CHECK: 2: 5 qux:5 92; CHECK: [baz]:49:7 93; CHECK: 0: 7 94; CHECK: 1: 7 95; CHECK: [foo:2 @ qux:4 @ callAfterReturn]:49:7 96; CHECK: 0: 7 97; CHECK: 1: 7 98; CHECK: [foo:2 @ qux:2 @ callBeforeReturn]:42:6 99; CHECK: 0: 6 100; CHECK: 1: 6 101 102; libcallback.c 103; clang -shared -fPIC -o libcallback.so libcallback.c 104 105int callback(int *cnt, int (*func1)(int), int (*func2)(int), int p) { 106 (*cnt)++; 107 return func1(p) + func2(p); 108} 109 110; test.c 111; clang test.c -O0 -g -fno-optimize-sibling-calls -fdebug-info-for-profiling -L $PWD -lcallback -fno-inline 112 113#include <stdio.h> 114 115int callbackCnt = 0; 116 117int callback(int *cnt, int (*func1)(int), int (*func2)(int), int p); 118 119int bar(int p) { 120 return p + 1; 121} 122 123int baz(int p) { 124 return p - 1; 125} 126 127int callBeforeReturn(int p) { 128 return p + 10; 129} 130 131int callAfterReturn(int p) { 132 return p - 10; 133} 134 135int qux(int p) { 136 p += 10; 137 int ret = callBeforeReturn(p); 138 ret = callback(&callbackCnt, bar, baz, ret); 139 ret = callAfterReturn(ret); 140 return ret; 141} 142 143int foo (int p) { 144 p -= 10; 145 return qux(p); 146} 147 148int main(void) { 149 int sum = 0; 150 for (int i = 0; i < 1000 * 1000; i++) { 151 sum += callback(&callbackCnt, foo, bar, i); 152 } 153 printf("callback count=%d, sum=%d\n", callbackCnt, sum); 154} 155