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| author | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2014-04-18 12:17:20 +0000 |
|---|---|---|
| committer | Evgeniy Stepanov <eugeni.stepanov@gmail.com> | 2014-04-18 12:17:20 +0000 |
| commit | f19e3273190e020c70a92724bd7a3af58c589cbf (patch) | |
| tree | a0ea70f21b867fe95bb9cb5956f9a51fe17c1983 /test | |
| parent | 14def5573601bd07e8e9eea36fa41b77e1eac96e (diff) | |
| download | llvm-f19e3273190e020c70a92724bd7a3af58c589cbf.tar.gz llvm-f19e3273190e020c70a92724bd7a3af58c589cbf.tar.bz2 llvm-f19e3273190e020c70a92724bd7a3af58c589cbf.tar.xz | |
[msan] Add -msan-instrumentation-with-call-threshold.
This flag replaces inline instrumentation for checks and origin stores with
calls into MSan runtime library. This is a workaround for PR17409.
Disabled by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206585 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Instrumentation/MemorySanitizer/instrumentation-with-call-threshold.ll | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/test/Instrumentation/MemorySanitizer/instrumentation-with-call-threshold.ll b/test/Instrumentation/MemorySanitizer/instrumentation-with-call-threshold.ll new file mode 100644 index 0000000000..34988ef605 --- /dev/null +++ b/test/Instrumentation/MemorySanitizer/instrumentation-with-call-threshold.ll @@ -0,0 +1,47 @@ +; Test -msan-instrumentation-with-call-threshold + +; RUN: opt < %s -msan -msan-check-access-address=0 -msan-instrumentation-with-call-threshold=0 -S | FileCheck %s +; 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 + +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" +target triple = "x86_64-unknown-linux-gnu" + +define void @LoadAndCmp(i32* nocapture %a) nounwind uwtable sanitize_memory { +entry: + %0 = load i32* %a, align 4 + %tobool = icmp eq i32 %0, 0 + br i1 %tobool, label %if.end, label %if.then + +if.then: ; preds = %entry + tail call void (...)* @foo() nounwind + br label %if.end + +if.end: ; preds = %entry, %if.then + ret void +} + +declare void @foo(...) + +; CHECK-LABEL: @LoadAndCmp +; CHECK: = load +; CHECK: = load +; CHECK: = zext i1 {{.*}} to i8 +; CHECK: call void @__msan_maybe_warning_1( +; CHECK-NOT: unreachable +; CHECK: ret void + + +define void @Store(i64* nocapture %p, i64 %x) nounwind uwtable sanitize_memory { +entry: + store i64 %x, i64* %p, align 4 + ret void +} + +; CHECK-LABEL: @Store +; CHECK: load {{.*}} @__msan_param_tls +; CHECK-ORIGINS: load {{.*}} @__msan_param_origin_tls +; CHECK: store +; CHECK-ORIGINS: bitcast i64* {{.*}} to i8* +; CHECK-ORIGINS: call void @__msan_maybe_store_origin_8( +; CHECK: store i64 +; CHECK: ret void |