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Diffstat (limited to 'test/Instrumentation')
| -rw-r--r-- | test/Instrumentation/MemorySanitizer/store-origin.ll | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/test/Instrumentation/MemorySanitizer/store-origin.ll b/test/Instrumentation/MemorySanitizer/store-origin.ll new file mode 100644 index 0000000000..75e531969d --- /dev/null +++ b/test/Instrumentation/MemorySanitizer/store-origin.ll @@ -0,0 +1,34 @@ +; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=1 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS1 %s +; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=2 -S | FileCheck -check-prefix=CHECK -check-prefix=CHECK-ORIGINS2 %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" + + +; Check origin instrumentation of stores + +define void @Store(i32* nocapture %p, i32 %x) nounwind uwtable sanitize_memory { +entry: + store i32 %x, i32* %p, align 4 + ret void +} + +; CHECK: @Store +; CHECK: load {{.*}} @__msan_param_tls +; CHECK: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls +; CHECK: store +; CHECK: icmp +; CHECK: br i1 +; CHECK: <label> + +; Origin tracking level 1: simply store the origin value +; CHECK-ORIGINS1: store i32 {{.*}}[[ORIGIN]], + +; Origin tracking level 2: pass origin value through __msan_chain_origin and store the result. +; CHECK-ORIGINS2: [[ORIGIN2:%[01-9a-z]+]] = call i32 @__msan_chain_origin(i32 {{.*}}[[ORIGIN]]) +; CHECK-ORIGINS2: store i32 {{.*}}[[ORIGIN2]], + +; CHECK: br label +; CHECK: <label> +; CHECK: store +; CHECK: ret void |