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| author | Alexey Samsonov <samsonov@google.com> | 2013-01-16 13:23:28 +0000 |
|---|---|---|
| committer | Alexey Samsonov <samsonov@google.com> | 2013-01-16 13:23:28 +0000 |
| commit | 19cd7e9ce28ed7f3326ebcd386eec215ab3763f9 (patch) | |
| tree | 0dbfe4d657d0ad147148baf3ddfce44010311d94 /test/Instrumentation | |
| parent | 2ce6eeb8ffc7d3f40b08c84f9670a6fed70f5264 (diff) | |
| download | llvm-19cd7e9ce28ed7f3326ebcd386eec215ab3763f9.tar.gz llvm-19cd7e9ce28ed7f3326ebcd386eec215ab3763f9.tar.bz2 llvm-19cd7e9ce28ed7f3326ebcd386eec215ab3763f9.tar.xz | |
ASan: wrap mapping scale and offset in a struct and make it a member of ASan passes. Add test for non-default mapping scale and offset. No functionality change
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172610 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Instrumentation')
| -rw-r--r-- | test/Instrumentation/AddressSanitizer/different_scale_and_offset.ll | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/Instrumentation/AddressSanitizer/different_scale_and_offset.ll b/test/Instrumentation/AddressSanitizer/different_scale_and_offset.ll new file mode 100644 index 0000000000..c07069c2dc --- /dev/null +++ b/test/Instrumentation/AddressSanitizer/different_scale_and_offset.ll @@ -0,0 +1,41 @@ +; Test non-default shadow mapping scale and offset. +; +; RUN: opt < %s -asan -asan-mapping-scale=2 -asan-mapping-offset-log=0 -S | FileCheck %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" +target triple = "x86_64-unknown-linux-gnu" + +; Test that ASan tells scale and offset to runtime. +; CHECK: @__asan_mapping_offset = linkonce_odr constant i64 0 +; CHECK: @__asan_mapping_scale = linkonce_odr constant i64 2 + +define i32 @test_load(i32* %a) address_safety { +; CHECK: @test_load +; CHECK-NOT: load +; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64 +; CHECK: lshr i64 %[[LOAD_ADDR]], 2 + +; No need in shift for zero offset. +; CHECK-NOT: or i64 + +; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr +; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8* %[[LOAD_SHADOW_PTR]] +; CHECK: icmp ne i8 +; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}} + +; No need in slow path for i32 and mapping scale equal to 2. +; CHECK-NOT: and i64 %[[LOAD_ADDR]] +; +; The crash block reports the error. +; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]]) +; CHECK: unreachable +; +; The actual load. +; CHECK: %tmp1 = load i32* %a +; CHECK: ret i32 %tmp1 + +entry: + %tmp1 = load i32* %a + ret i32 %tmp1 +} + |