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