bolt/test/X86/bb-with-two-tail-calls.s

   1 # This reproduces a bug with dynostats when trying to compute branch stats
   2 # at a block with two tails calls (one conditional and one unconditional).
   3
   4 # REQUIRES: system-linux
   5
   6 # RUN: llvm-mc -filetype=obj -triple x86_64-unknown-unknown \
   7 # RUN:   %s -o %t.o
   8 # RUN: link_fdata %s %t.o %t.fdata
   9 # RUN: llvm-strip --strip-unneeded %t.o
  10 # RUN: %clang %cflags %t.o -o %t.exe -Wl,-q -nostdlib
  11 # RUN: llvm-bolt %t.exe -o %t.out --data %t.fdata --lite=0 --dyno-stats \
  12 # RUN:    --print-sctc --print-only=_start 2>&1 | FileCheck %s
  13 # CHECK-NOT: Assertion `BranchInfo.size() == 2 && "could only be called for blocks with 2 successors"' failed.
  14 # Two tail calls in the same basic block after SCTC:
  15 # CHECK:         {{.*}}:   ja      {{.*}} # TAILCALL  # CTCTakenCount: {{.*}}
  16 # CHECK-NEXT:    {{.*}}:   jmp     {{.*}} # TAILCALL
  17
  18   .globl _start
  19 _start:
  20     je x
  21 a:  ja b
  22     jmp c
  23 x:  ret
  24 # FDATA: 1 _start #a# 1 _start #b# 2 4
  25 b:  jmp e
  26 c:  jmp f
  27
  28   .globl e
  29 e:
  30     nop
  31
  32   .globl f
  33 f:
  34     nop