test/Instrumentation/MemorySanitizer/instrumentation-with-call-threshold.ll

   1 ; Test -msan-instrumentation-with-call-threshold
   2 ; Test that in with-calls mode there are no calls to __msan_chain_origin - they
   3 ; are done from __msan_maybe_store_origin_*.
   4
   5 ; RUN: opt < %s -msan-check-access-address=0                                   \
   6 ; RUN: -msan-instrumentation-with-call-threshold=0 -S -passes=msan 2>&1 |      \
   7 ; RUN: FileCheck %s
   8 ; RUN: opt < %s -msan -msan-check-access-address=0 -msan-instrumentation-with-call-threshold=0 -S | FileCheck %s
   9 ; RUN: opt < %s -msan-check-access-address=0                                   \
  10 ; RUN: -msan-instrumentation-with-call-threshold=0 -msan-track-origins=1 -S    \
  11 ; RUN: -passes=msan 2>&1 | FileCheck -check-prefix=CHECK                       \
  12 ; RUN: -check-prefix=CHECK-ORIGINS %s
  13 ; RUN: opt < %s -msan -msan-check-access-address=0 -msan-instrumentation-with-call-threshold=0 -msan-track-origins=1 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS %s
  14 ; RUN: opt < %s -msan-check-access-address=0                                   \
  15 ; RUN: -msan-instrumentation-with-call-threshold=0 -msan-track-origins=2 -S    \
  16 ; RUN: -passes=msan 2>&1 | FileCheck -check-prefix=CHECK                       \
  17 ; RUN: -check-prefix=CHECK-ORIGINS %s
  18 ; RUN: opt < %s -msan -msan-check-access-address=0 -msan-instrumentation-with-call-threshold=0 -msan-track-origins=2 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS %s
  19
  20 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-S128"
  21 target triple = "x86_64-unknown-linux-gnu"
  22
  23 define void @LoadAndCmp(i32* nocapture %a) nounwind uwtable sanitize_memory {
  24 entry:
  25   %0 = load i32, i32* %a, align 4
  26   %tobool = icmp eq i32 %0, 0
  27   br i1 %tobool, label %if.end, label %if.then
  28
  29 if.then:                                          ; preds = %entry
  30   tail call void (...) @foo() nounwind
  31   br label %if.end
  32
  33 if.end:                                           ; preds = %entry, %if.then
  34   ret void
  35 }
  36
  37 declare void @foo(...)
  38
  39 ; CHECK-LABEL: @LoadAndCmp
  40 ; CHECK: = load
  41 ; CHECK: = load
  42 ; CHECK: = zext i1 {{.*}} to i8
  43 ; CHECK: call void @__msan_maybe_warning_1(
  44 ; CHECK-NOT: unreachable
  45 ; CHECK: ret void
  46
  47
  48 define void @Store(i64* nocapture %p, i64 %x) nounwind uwtable sanitize_memory {
  49 entry:
  50   store i64 %x, i64* %p, align 4
  51   ret void
  52 }
  53
  54 ; CHECK-LABEL: @Store
  55 ; CHECK: load {{.*}} @__msan_param_tls
  56 ; CHECK-ORIGINS: load {{.*}} @__msan_param_origin_tls
  57 ; CHECK: store
  58 ; CHECK-ORIGINS-NOT: __msan_chain_origin
  59 ; CHECK-ORIGINS: bitcast i64* {{.*}} to i8*
  60 ; CHECK-ORIGINS-NOT: __msan_chain_origin
  61 ; CHECK-ORIGINS: call void @__msan_maybe_store_origin_8(
  62 ; CHECK-ORIGINS-NOT: __msan_chain_origin
  63 ; CHECK: store i64
  64 ; CHECK: ret void