llvm/test/Instrumentation/SanitizerCoverage/tracing.ll

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