1; Firstly test uncompression(--compress-recursion=0) 2; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-noprobe.perfscript --binary=%S/Inputs/recursion-compression-noprobe.perfbin --output=%t --compress-recursion=0 --profile-summary-hot-count=0 --csspgo-preinliner=0 --gen-cs-nested-profile=0 3; RUN: FileCheck %s --input-file %t -check-prefix=CHECK-UNCOMPRESS 4; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-noprobe.perfscript --binary=%S/Inputs/recursion-compression-noprobe.perfbin --output=%t --profile-summary-hot-count=0 --csspgo-preinliner=0 --gen-cs-nested-profile=0 5; RUN: FileCheck %s --input-file %t 6; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-noprobe.perfscript --binary=%S/Inputs/recursion-compression-noprobe.perfbin --output=%t --compress-recursion=0 --profile-summary-hot-count=0 --csprof-max-context-depth=2 --csspgo-preinliner=0 --gen-cs-nested-profile=0 7; RUN: FileCheck %s --input-file %t -check-prefix=CHECK-MAX-CTX-DEPTH 8 9; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa:2 @ fb]:48:0 10; CHECK-UNCOMPRESS: 1: 11 11; CHECK-UNCOMPRESS: 2: 1 fa:1 12; CHECK-UNCOMPRESS: 65532: 11 13; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa]:24:0 14; CHECK-UNCOMPRESS: 1: 1 15; CHECK-UNCOMPRESS: 2: 13 fb:11 16; CHECK-UNCOMPRESS: 65527: 1 17; CHECK-UNCOMPRESS:[main:1 @ foo]:7:0 18; CHECK-UNCOMPRESS: 2: 1 19; CHECK-UNCOMPRESS: 3: 2 fa:1 20; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa:2 @ fb:2 @ fa]:7:0 21; CHECK-UNCOMPRESS: 1: 1 22; CHECK-UNCOMPRESS: 2: 2 fb:1 23; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa:2 @ fb:2 @ fa:2 @ fb]:2:0 24; CHECK-UNCOMPRESS: 2: 1 fa:1 25; CHECK-UNCOMPRESS: 65532: 1 26; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa:2 @ fb:2 @ fa:2 @ fb:2 @ fa]:2:0 27; CHECK-UNCOMPRESS: 4: 1 28 29; CHECK-MAX-CTX-DEPTH: [foo:3 @ fa:2 @ fb]:47:0 30; CHECK-MAX-CTX-DEPTH: 1: 11 31; CHECK-MAX-CTX-DEPTH: 65532: 11 32; CHECK-MAX-CTX-DEPTH: [main:1 @ foo:3 @ fa]:13:0 33; CHECK-MAX-CTX-DEPTH: 1: 1 34; CHECK-MAX-CTX-DEPTH: 2: 2 35; CHECK-MAX-CTX-DEPTH: 65527: 1 36; CHECK-MAX-CTX-DEPTH: [fa:2 @ fb:2 @ fa]:8:0 37; CHECK-MAX-CTX-DEPTH: 1: 1 38; CHECK-MAX-CTX-DEPTH: 2: 1 39; CHECK-MAX-CTX-DEPTH: 4: 1 40; CHECK-MAX-CTX-DEPTH: [main:1 @ foo]:7:0 41; CHECK-MAX-CTX-DEPTH: 2: 1 42; CHECK-MAX-CTX-DEPTH: 3: 2 fa:1 43; CHECK-MAX-CTX-DEPTH: [fb:2 @ fa:2 @ fb]:1:0 44; CHECK-MAX-CTX-DEPTH: 65532: 1 45 46 47;CHECK: [main:1 @ foo:3 @ fa:2 @ fb]:48:0 48;CHECK: 1: 11 49;CHECK: 2: 1 fa:1 50;CHECK: 65532: 11 51;CHECK: [main:1 @ foo:3 @ fa]:24:0 52;CHECK: 1: 1 53;CHECK: 2: 13 fb:11 54;CHECK: 65527: 1 55;CHECK: [main:1 @ foo:3 @ fa:2 @ fb:2 @ fa]:9:0 56;CHECK: 1: 1 57;CHECK: 2: 2 fb:1 58;CHECK: 4: 1 59;CHECK: [main:1 @ foo]:7:0 60;CHECK: 2: 1 61;CHECK: 3: 2 fa:1 62;CHECK: [main:1 @ foo:3 @ fa:2 @ fb:2 @ fa:2 @ fb]:1:0 63;CHECK: 65532: 1 64 65; original code: 66; clang -O3 -g test.c -o a.out 67#include <stdio.h> 68 69int fb(int n) { 70 if(n > 10) return fb(n / 2); 71 return fa(n - 1); 72} 73 74int fa(int n) { 75 if(n < 2) return n; 76 if(n % 2) return fb(n - 1); 77 return fa(n - 1); 78} 79 80void foo() { 81 int s, i = 0; 82 while (i++ < 10000) 83 s += fa(i); 84 printf("sum is %d\n", s); 85} 86 87int main() { 88 foo(); 89 return 0; 90} 91