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1; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/callback-external-addr.perfscript --binary=%S/Inputs/callback-external-addr.perfbin --output=%t --skip-symbolization2; RUN: FileCheck %s --input-file %t --check-prefix=CHECK-UNWINDER3 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=05; RUN: FileCheck %s --input-file %t6 7; Test if call stack is correctly truncated.8; CHECK-UNWINDER-NOT: main:3 @ bar9; CHECK-UNWINDER-NOT: main:3 @ foo10; CHECK-UNWINDER-NOT: qux:3 @ baz11; CHECK-UNWINDER-NOT: qux:3 @ bar12 13; Test if return to wrong internal target14; CHECK-UNWINDER-NOT: baz:0 @ bar15; CHECK-UNWINDER-NOT: bar:0 @ baz16; CHECK-UNWINDER-NOT: baz:0 @ main17; CHECK-UNWINDER-NOT: bar:0 @ foo18; CHECK-UNWINDER-NOT: baz:0 @ qux19 20; Test for callback return from internal address to external address.21; [foo:2 @ qux:2 @ callBeforeReturn] and [foo:2 @ qux:4 @ callAfterReturn] should exist22; which means the callback return won't interrupt the previous call stack23 24 25; CHECK-UNWINDER: []26; CHECK-UNWINDER: 027; CHECK-UNWINDER: 528; CHECK-UNWINDER: ffffffffffc00001->690:1329; CHECK-UNWINDER: ffffffffffc00001->6a0:730; CHECK-UNWINDER: ffffffffffc00001->715:731; CHECK-UNWINDER: ffffffffffc00001->730:532; CHECK-UNWINDER: ffffffffffc00001->7b0:533; CHECK-UNWINDER: [bar]34; CHECK-UNWINDER: 135; CHECK-UNWINDER: 690-69e:1336; CHECK-UNWINDER: 037; CHECK-UNWINDER: [baz]38; CHECK-UNWINDER: 139; CHECK-UNWINDER: 6a0-6ae:740; CHECK-UNWINDER: 041; CHECK-UNWINDER: [foo]42; CHECK-UNWINDER: 243; CHECK-UNWINDER: 730-747:544; CHECK-UNWINDER: 74c-751:545; CHECK-UNWINDER: 146; CHECK-UNWINDER: 747->6d0:547; CHECK-UNWINDER: [foo:2 @ qux]48; CHECK-UNWINDER: 449; CHECK-UNWINDER: 6d0-6e7:550; CHECK-UNWINDER: 6ec-710:651; CHECK-UNWINDER: 715-71b:752; CHECK-UNWINDER: 720-72b:653; CHECK-UNWINDER: 354; CHECK-UNWINDER: 6e7->6b0:655; CHECK-UNWINDER: 71b->6c0:756; CHECK-UNWINDER: 72b->74c:657; CHECK-UNWINDER: [foo:2 @ qux:2 @ callBeforeReturn]58; CHECK-UNWINDER: 159; CHECK-UNWINDER: 6b0-6be:660; CHECK-UNWINDER: 161; CHECK-UNWINDER: 6be->6ec:762; CHECK-UNWINDER: [foo:2 @ qux:4 @ callAfterReturn]63; CHECK-UNWINDER: 164; CHECK-UNWINDER: 6c0-6ce:765; CHECK-UNWINDER: 166; CHECK-UNWINDER: 6ce->720:767; CHECK-UNWINDER: [main]68; CHECK-UNWINDER: 269; CHECK-UNWINDER: 77d-7ab:570; CHECK-UNWINDER: 7b0-7bf:571; CHECK-UNWINDER: 172; CHECK-UNWINDER: 7bf->77d:573 74; CHECK: [foo:2 @ qux]:132:575; CHECK: 0: 576; CHECK: 1: 577; CHECK: 2: 6 callBeforeReturn:678; CHECK: 3: 779; CHECK: 4: 7 callAfterReturn:780; CHECK: 5: 681; CHECK: [bar]:91:1382; CHECK: 0: 1383; CHECK: 1: 1384; CHECK: [main]:65:085; CHECK: 2.1: 586; CHECK: 2.2: 587; CHECK: 3: 588; CHECK: [foo]:60:589; CHECK: 0: 590; CHECK: 1: 591; CHECK: 2: 5 qux:592; CHECK: [baz]:49:793; CHECK: 0: 794; CHECK: 1: 795; CHECK: [foo:2 @ qux:4 @ callAfterReturn]:49:796; CHECK: 0: 797; CHECK: 1: 798; CHECK: [foo:2 @ qux:2 @ callBeforeReturn]:42:699; CHECK: 0: 6100; CHECK: 1: 6101 102; libcallback.c103; clang -shared -fPIC -o libcallback.so libcallback.c104 105int callback(int *cnt, int (*func1)(int), int (*func2)(int), int p) {106 (*cnt)++;107 return func1(p) + func2(p);108}109 110; test.c111; clang test.c -O0 -g -fno-optimize-sibling-calls -fdebug-info-for-profiling -L $PWD -lcallback -fno-inline112 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