test/Instrumentation/SanitizerCoverage/tracing.ll

   1 ; Test -sanitizer-coverage-experimental-tracing
   2 ; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc  -S | FileCheck %s --check-prefix=CHECK_PC
   3 ; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard  -S | FileCheck %s --check-prefix=CHECK_PC_GUARD
   4 ; RUN: opt < %s -sancov -sanitizer-coverage-level=3 -sanitizer-coverage-trace-pc-guard  -S -mtriple=x86_64-apple-macosx | FileCheck %s --check-prefix=CHECK_PC_GUARD_DARWIN
   5
   6 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
   7 target triple = "x86_64-unknown-linux-gnu"
   8 define void @foo(i32* %a) sanitize_address {
   9 entry:
  10   %tobool = icmp eq i32* %a, null
  11   br i1 %tobool, label %if.end, label %if.then
  12
  13   if.then:                                          ; preds = %entry
  14   store i32 0, i32* %a, align 4
  15   br label %if.end
  16
  17   if.end:                                           ; preds = %entry, %if.then
  18   ret void
  19 }
  20
  21 define available_externally void @external_bar(i32* %a) sanitize_address {
  22 entry:
  23   ret void
  24 }
  25
  26 declare void @longjmp(i8*) noreturn
  27
  28 ; We expect three coverage points here for each BB.
  29 define void @cond_longjmp(i1 %cond, i8* %jmp_buf) sanitize_address {
  30 entry:
  31   br i1 %cond, label %lj, label %done
  32 done:
  33   ret void
  34 lj:
  35   call void @longjmp(i8* %jmp_buf)
  36   unreachable
  37 }
  38
  39
  40 ; CHECK_PC-LABEL: define void @foo
  41 ; CHECK_PC: call void @__sanitizer_cov_trace_pc
  42 ; CHECK_PC: call void @__sanitizer_cov_trace_pc
  43 ; CHECK_PC: call void @__sanitizer_cov_trace_pc
  44 ; CHECK_PC-NOT: call void @__sanitizer_cov_trace_pc
  45 ; CHECK_PC: ret void
  46 ; CHECK_PC-NOT: call void @__sanitizer_cov_module_init
  47 ; CHECK_PC-LABEL: @cond_longjmp
  48 ; CHECK_PC: call void @__sanitizer_cov_trace_pc
  49 ; CHECK_PC: call void @__sanitizer_cov_trace_pc
  50 ; CHECK_PC: ret void
  51 ; CHECK_PC: call void @__sanitizer_cov_trace_pc
  52 ; CHECK_PC: call void @longjmp
  53 ; CHECK_PC: unreachable
  54
  55 ; CHECK_PC_GUARD: section "__sancov_guards", comdat($foo), align 4
  56 ; CHECK_PC_GUARD-LABEL: define void @foo
  57 ; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
  58 ; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
  59 ; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
  60 ; CHECK_PC_GUARD-NOT: call void @__sanitizer_cov_trace_pc
  61 ; CHECK_PC_GUARD: ret void
  62 ; CHECK_PC_GUARD-LABEL: @external_bar
  63 ; CHECK_PC_GUARD-NOT: call void @__sanitizer_cov_trace_pc
  64 ; CHECK_PC_GUARD: ret void
  65 ; CHECK_PC_GUARD-LABEL: @cond_longjmp
  66 ; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
  67 ; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
  68 ; CHECK_PC_GUARD: ret void
  69 ; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard
  70 ; CHECK_PC_GUARD: call void @longjmp
  71 ; CHECK_PC_GUARD: unreachable
  72
  73 ; CHECK_PC_GUARD: call void @__sanitizer_cov_trace_pc_guard_init(i32* bitcast (i32** @__start___sancov_guards to i32*), i32* bitcast (i32** @__stop___sancov_guards to i32*))
  74
  75 ; CHECK_PC_GUARD_DARWIN-LABEL: define void @foo
  76 ; CHECK_PC_GUARD_DARWIN: call void @__sanitizer_cov_trace_pc_guard
  77 ; CHECK_PC_GUARD_DARWIN: call void @__sanitizer_cov_trace_pc_guard
  78 ; CHECK_PC_GUARD_DARWIN: call void @__sanitizer_cov_trace_pc_guard
  79 ; CHECK_PC_GUARD_DARWIN-NOT: call void @__sanitizer_cov_trace_pc
  80 ; CHECK_PC_GUARD_DARWIN: ret void
  81 ; CHECK_PC_GUARD_DARWIN: call void @__sanitizer_cov_trace_pc_guard_init(i32* bitcast (i32** @"\01section$start$__DATA$__sancov_guards" to i32*), i32* bitcast (i32** @"\01section$end$__DATA$__sancov_guards" to i32*))