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Compiler projects using llvm 
; Firstly test uncompression(--compress-recursion=0)
; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-pseudoprobe.perfscript --binary=%S/Inputs/recursion-compression-pseudoprobe.perfbin --output=%t --compress-recursion=0 --profile-summary-hot-count=0 --csspgo-preinliner=0 --gen-cs-nested-profile=0
; RUN: FileCheck %s --input-file %t -check-prefix=CHECK-UNCOMPRESS
; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-pseudoprobe.perfscript --binary=%S/Inputs/recursion-compression-pseudoprobe.perfbin --output=%t --skip-symbolization --profile-summary-hot-count=0
; RUN: FileCheck %s --input-file %t --check-prefix=CHECK-UNWINDER
; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-pseudoprobe.perfscript --binary=%S/Inputs/recursion-compression-pseudoprobe.perfbin --output=%t --profile-summary-hot-count=0 --csspgo-preinliner=0 --gen-cs-nested-profile=0
; RUN: FileCheck %s --input-file %t
; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-pseudoprobe-nommap.perfscript --binary=%S/Inputs/recursion-compression-pseudoprobe.perfbin --output=%t --skip-symbolization --profile-summary-hot-count=0
; RUN: FileCheck %s --input-file %t --check-prefix=CHECK-UNWINDER
; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-pseudoprobe-nommap.perfscript --binary=%S/Inputs/recursion-compression-pseudoprobe.perfbin --output=%t --profile-summary-hot-count=0 --csspgo-preinliner=0 --gen-cs-nested-profile=0
; RUN: FileCheck %s --input-file %t
; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/recursion-compression-pseudoprobe.perfscript --binary=%S/Inputs/recursion-compression-pseudoprobe.perfbin --output=%t --compress-recursion=0 --profile-summary-hot-count=0 --csprof-max-context-depth=0 --csspgo-preinliner=0 --gen-cs-nested-profile=0
; RUN: FileCheck %s --input-file %t -check-prefix=CHECK-MAX-CTX-DEPTH


; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:6 @ fa]:4:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  3: 1
; CHECK-UNCOMPRESS:  5: 1
; CHECK-UNCOMPRESS:  8: 1 fa:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563070469352221
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:6 @ fa:8 @ fa]:4:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  3: 1
; CHECK-UNCOMPRESS:  4: 1
; CHECK-UNCOMPRESS:  7: 1 fb:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563070469352221
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:6 @ fa:8 @ fa:7 @ fb:6 @ fa]:4:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  3: 1
; CHECK-UNCOMPRESS:  4: 1
; CHECK-UNCOMPRESS:  7: 1 fb:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563070469352221
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb]:3:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  2: 1
; CHECK-UNCOMPRESS:  5: 1 fb:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563022570642068
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb]:3:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  2: 1
; CHECK-UNCOMPRESS:  5: 1 fb:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563022570642068
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb]:3:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  2: 1
; CHECK-UNCOMPRESS:  5: 1 fb:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563022570642068
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb]:3:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  3: 1
; CHECK-UNCOMPRESS:  6: 1 fa:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563022570642068
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:6 @ fa:8 @ fa:7 @ fb]:3:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  3: 1
; CHECK-UNCOMPRESS:  6: 1 fa:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563022570642068
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:6 @ fa:8 @ fa:7 @ fb:6 @ fa:7 @ fb]:3:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  3: 1
; CHECK-UNCOMPRESS:  6: 1 fa:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563022570642068
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb:6 @ fa:8 @ fa:7 @ fb:6 @ fa:7 @ fb:6 @ fa]:2:1
; CHECK-UNCOMPRESS:  1: 1
; CHECK-UNCOMPRESS:  3: 1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563070469352221
; CHECK-UNCOMPRESS: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:5 @ fb:5 @ fb:5 @ fb]:1:0
; CHECK-UNCOMPRESS:  5: 1 fb:1
; CHECK-UNCOMPRESS:  !CFGChecksum: 563022570642068
; CHECK-MAX-CTX-DEPTH: [fb]:19:6
; CHECK-MAX-CTX-DEPTH:  1: 6
; CHECK-MAX-CTX-DEPTH:  2: 3
; CHECK-MAX-CTX-DEPTH:  3: 3
; CHECK-MAX-CTX-DEPTH:  4: 0
; CHECK-MAX-CTX-DEPTH:  5: 4 fb:4
; CHECK-MAX-CTX-DEPTH:  6: 3 fa:3
; CHECK-MAX-CTX-DEPTH:  !CFGChecksum: 563022570642068
; CHECK-MAX-CTX-DEPTH: [fa]:14:4
; CHECK-MAX-CTX-DEPTH:  1: 4
; CHECK-MAX-CTX-DEPTH:  3: 4
; CHECK-MAX-CTX-DEPTH:  4: 2
; CHECK-MAX-CTX-DEPTH:  5: 1
; CHECK-MAX-CTX-DEPTH:  6: 0
; CHECK-MAX-CTX-DEPTH:  7: 2 fb:2
; CHECK-MAX-CTX-DEPTH:  8: 1 fa:1
; CHECK-MAX-CTX-DEPTH:  !CFGChecksum: 563070469352221


; CHECK: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb]:13:4
; CHECK:  1: 4
; CHECK:  2: 3
; CHECK:  3: 1
; CEHCK:  5: 4 fb:4
; CHECK:  6: 1 fa:1
; CHECK !CFGChecksum: 563022570642068
; CHECK: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:6 @ fa:8 @ fa:7 @ fb:6 @ fa]:6:2
; CHECK:  1: 2
; CHECK:  3: 2
; CHECK:  4: 1
; CHECK:  7: 1 fb:1
; CHECK:  !CFGChecksum: 563070469352221
 CHECK: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:6 @ fa]:4:1
; CHECK:  1: 1
; CHECK:  3: 1
; CHECK:  5: 1
; CHECK:  8: 1 fa:1
; CHECK:  !CFGChecksum: 563070469352221
; CHECK: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:6 @ fa:8 @ fa]:4:1
; CHECK:  1: 1
; CHECK:  3: 1
; CHECK:  4: 1
; CHECK:  7: 1 fb:1
; CHECK:  !CFGChecksum: 563070469352221
; CHECK: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:6 @ fa:8 @ fa:7 @ fb]:3:1
; CHECK:  1: 1
; CHECK:  3: 1
; CHECK:  6: 1 fa:1
; CHECK:  !CFGChecksum: 563022570642068
; CHECK: [main:2 @ foo:5 @ fa:8 @ fa:7 @ fb:5 @ fb:6 @ fa:8 @ fa:7 @ fb:6 @ fa:7 @ fb]:3:1
; CHECK:  1: 1
; CHECK:  3: 1
; CHECK:  6: 1 fa:1
; CHECK:  !CFGChecksum: 563022570642068

; CHECK-UNWINDER:      [0x842 @ 0x7d4 @ 0x7e0 @ 0x7ab]
; CHECK-UNWINDER-NEXT:   3
; CHECK-UNWINDER-NEXT:   7a0-7a7:1
; CHECK-UNWINDER-NEXT:   7a0-7ab:3
; CHECK-UNWINDER-NEXT:   7b2-7b5:1
; CHECK-UNWINDER-NEXT:   3
; CHECK-UNWINDER-NEXT:   7a7->7b2:1
; CHECK-UNWINDER-NEXT:   7ab->7a0:4
; CHECK-UNWINDER-NEXT:   7b5->7c0:1
; CHECK-UNWINDER-NEXT: [0x842 @ 0x7d4 @ 0x7e0 @ 0x7ab @ 0x7b5]
; CHECK-UNWINDER-NEXT:   1
; CHECK-UNWINDER-NEXT:   7c0-7d4:1
; CHECK-UNWINDER-NEXT:   1
; CHECK-UNWINDER-NEXT:   7d4->7c0:1
; CHECK-UNWINDER-NEXT: [0x842 @ 0x7d4 @ 0x7e0 @ 0x7ab @ 0x7b5 @ 0x7d4]
; CHECK-UNWINDER-NEXT:   2
; CHECK-UNWINDER-NEXT:   7c0-7cd:1
; CHECK-UNWINDER-NEXT:   7db-7e0:1
; CHECK-UNWINDER-NEXT:   2
; CHECK-UNWINDER-NEXT:   7cd->7db:1
; CHECK-UNWINDER-NEXT:   7e0->7a0:1
; CHECK-UNWINDER-NEXT: [0x842 @ 0x7d4 @ 0x7e0 @ 0x7ab @ 0x7b5 @ 0x7d4 @ 0x7e0]
; CHECK-UNWINDER-NEXT:   2
; CHECK-UNWINDER-NEXT:   7a0-7a7:1
; CHECK-UNWINDER-NEXT:   7b2-7b5:1
; CHECK-UNWINDER-NEXT:   2
; CHECK-UNWINDER-NEXT:   7a7->7b2:1
; CHECK-UNWINDER-NEXT:   7b5->7c0:1
; CHECK-UNWINDER-NEXT: [0x842 @ 0x7d4 @ 0x7e0 @ 0x7ab @ 0x7b5 @ 0x7d4 @ 0x7e0 @ 0x7b5]
; CHECK-UNWINDER-NEXT:   2
; CHECK-UNWINDER-NEXT:   7c0-7cd:2
; CHECK-UNWINDER-NEXT:   7db-7e0:1
; CHECK-UNWINDER-NEXT:   2
; CHECK-UNWINDER-NEXT:   7cd->7db:2
; CHECK-UNWINDER-NEXT:   7e0->7a0:1
; CHECK-UNWINDER-NEXT: [0x842 @ 0x7d4 @ 0x7e0 @ 0x7ab @ 0x7b5 @ 0x7d4 @ 0x7e0 @ 0x7b5 @ 0x7e0]
; CHECK-UNWINDER-NEXT:   2
; CHECK-UNWINDER-NEXT:   7a0-7a7:1
; CHECK-UNWINDER-NEXT:   7b2-7b5:1
; CHECK-UNWINDER-NEXT:   2
; CHECK-UNWINDER-NEXT:   7a7->7b2:1
; CHECK-UNWINDER-NEXT:   7b5->7c0:1


; clang -O3 -fuse-ld=lld -fpseudo-probe-for-profiling
; -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -Xclang -mdisable-tail-calls
; -g test.c  -o a.out

#include <stdio.h>

int fb(int n) {
  if(n > 10) return fb(n / 2);
  return fa(n - 1);
}

int fa(int n) {
  if(n < 2) return n;
  if(n % 2) return fb(n - 1);
  return fa(n - 1);
}

void foo() {
  int s, i = 0;
  while (i++ < 10000)
    s += fa(i);
  printf("sum is %d\n", s);
}

int main() {
  foo();
  return 0;
}