llvm/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-check-access-address=0                                   \
   9 ; RUN: -msan-instrumentation-with-call-threshold=0 -msan-track-origins=1 -S    \
  10 ; RUN: -passes=msan 2>&1 | FileCheck -check-prefix=CHECK                       \
  11 ; RUN: -check-prefix=CHECK-ORIGINS %s
  12 ; RUN: opt < %s -msan-check-access-address=0                                   \
  13 ; RUN: -msan-instrumentation-with-call-threshold=0 -msan-track-origins=2 -S    \
  14 ; RUN: -passes=msan 2>&1 | FileCheck -check-prefix=CHECK                       \
  15 ; RUN: -check-prefix=CHECK-ORIGINS %s
  16
  17 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"
  18 target triple = "x86_64-unknown-linux-gnu"
  19
  20 define void @LoadAndCmp(ptr nocapture %a) nounwind uwtable sanitize_memory {
  21 entry:
  22   %0 = load i32, ptr %a, align 4
  23   %tobool = icmp eq i32 %0, 0
  24   br i1 %tobool, label %if.end, label %if.then
  25
  26 if.then:                                          ; preds = %entry
  27   tail call void (...) @foo() nounwind
  28   br label %if.end
  29
  30 if.end:                                           ; preds = %entry, %if.then
  31   ret void
  32 }
  33
  34 declare void @foo(...)
  35
  36 ; CHECK-LABEL: @LoadAndCmp
  37 ; CHECK: = load
  38 ; CHECK: = load
  39 ; CHECK: = zext i1 {{.*}} to i8
  40 ; CHECK: call void @__msan_maybe_warning_1(i8 zeroext {{.*}}, i32 zeroext {{.*}})
  41 ; CHECK-NOT: unreachable
  42 ; CHECK: ret void
  43
  44
  45 define void @Store(ptr nocapture %p, i64 %x) nounwind uwtable sanitize_memory {
  46 entry:
  47   store i64 %x, ptr %p, align 4
  48   ret void
  49 }
  50
  51 ; CHECK-LABEL: @Store
  52 ; CHECK: load {{.*}} @__msan_param_tls
  53 ; CHECK-ORIGINS: load {{.*}} @__msan_param_origin_tls
  54 ; CHECK: store
  55 ; CHECK-ORIGINS-NOT: __msan_chain_origin
  56 ; CHECK-ORIGINS: call void @__msan_maybe_store_origin_8(i64 zeroext {{.*}}, ptr {{.*}}, i32 zeroext {{.*}})
  57 ; CHECK-ORIGINS-NOT: __msan_chain_origin
  58 ; CHECK: store i64
  59 ; CHECK: ret void