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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=03; RUN: FileCheck %s --input-file %t -check-prefix=CHECK-UNCOMPRESS4; 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=05; RUN: FileCheck %s --input-file %t6; 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=07; RUN: FileCheck %s --input-file %t -check-prefix=CHECK-MAX-CTX-DEPTH8 9; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa:2 @ fb]:48:010; CHECK-UNCOMPRESS: 1: 1111; CHECK-UNCOMPRESS: 2: 1 fa:112; CHECK-UNCOMPRESS: 65532: 1113; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa]:24:014; CHECK-UNCOMPRESS: 1: 115; CHECK-UNCOMPRESS: 2: 13 fb:1116; CHECK-UNCOMPRESS: 65527: 117; CHECK-UNCOMPRESS:[main:1 @ foo]:7:018; CHECK-UNCOMPRESS: 2: 119; CHECK-UNCOMPRESS: 3: 2 fa:120; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa:2 @ fb:2 @ fa]:7:021; CHECK-UNCOMPRESS: 1: 122; CHECK-UNCOMPRESS: 2: 2 fb:123; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa:2 @ fb:2 @ fa:2 @ fb]:2:024; CHECK-UNCOMPRESS: 2: 1 fa:125; CHECK-UNCOMPRESS: 65532: 126; CHECK-UNCOMPRESS:[main:1 @ foo:3 @ fa:2 @ fb:2 @ fa:2 @ fb:2 @ fa]:2:027; CHECK-UNCOMPRESS: 4: 128 29; CHECK-MAX-CTX-DEPTH: [foo:3 @ fa:2 @ fb]:47:030; CHECK-MAX-CTX-DEPTH: 1: 1131; CHECK-MAX-CTX-DEPTH: 65532: 1132; CHECK-MAX-CTX-DEPTH: [main:1 @ foo:3 @ fa]:13:033; CHECK-MAX-CTX-DEPTH: 1: 134; CHECK-MAX-CTX-DEPTH: 2: 235; CHECK-MAX-CTX-DEPTH: 65527: 136; CHECK-MAX-CTX-DEPTH: [fa:2 @ fb:2 @ fa]:8:037; CHECK-MAX-CTX-DEPTH: 1: 138; CHECK-MAX-CTX-DEPTH: 2: 139; CHECK-MAX-CTX-DEPTH: 4: 140; CHECK-MAX-CTX-DEPTH: [main:1 @ foo]:7:041; CHECK-MAX-CTX-DEPTH: 2: 142; CHECK-MAX-CTX-DEPTH: 3: 2 fa:143; CHECK-MAX-CTX-DEPTH: [fb:2 @ fa:2 @ fb]:1:044; CHECK-MAX-CTX-DEPTH: 65532: 145 46 47;CHECK: [main:1 @ foo:3 @ fa:2 @ fb]:48:048;CHECK: 1: 1149;CHECK: 2: 1 fa:150;CHECK: 65532: 1151;CHECK: [main:1 @ foo:3 @ fa]:24:052;CHECK: 1: 153;CHECK: 2: 13 fb:1154;CHECK: 65527: 155;CHECK: [main:1 @ foo:3 @ fa:2 @ fb:2 @ fa]:9:056;CHECK: 1: 157;CHECK: 2: 2 fb:158;CHECK: 4: 159;CHECK: [main:1 @ foo]:7:060;CHECK: 2: 161;CHECK: 3: 2 fa:162;CHECK: [main:1 @ foo:3 @ fa:2 @ fb:2 @ fa:2 @ fb]:1:063;CHECK: 65532: 164 65; original code:66; clang -O3 -g test.c -o a.out67#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