| ; RUN: opt < %s -asan -asan-module -asan-globals-live-support=1 -S | FileCheck %s |
| ; RUN: opt < %s -asan -asan-module -asan-globals-live-support=1 -asan-mapping-scale=5 -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" |
| @xxx = global i32 0, align 4 |
| |
| ; If a global is present, __asan_[un]register_globals should be called from |
| ; module ctor/dtor |
| |
| ; CHECK: @___asan_gen_ = private constant [8 x i8] c"<stdin>\00", align 1 |
| ; CHECK: llvm.global_ctors |
| ; CHECK: llvm.global_dtors |
| |
| ; Test that we don't instrument global arrays with static initializer |
| ; indexed with constants in-bounds. But instrument all other cases. |
| |
| @GlobSt = global [10 x i32] zeroinitializer, align 16 ; static initializer |
| @GlobDy = global [10 x i32] zeroinitializer, align 16 ; dynamic initializer |
| @GlobEx = external global [10 x i32] , align 16 ; extern initializer |
| |
| ; GlobSt is declared here, and has static initializer -- ok to optimize. |
| define i32 @AccessGlobSt_0_2() sanitize_address { |
| entry: |
| %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 0, i64 2), align 8 |
| ret i32 %0 |
| ; CHECK-LABEL: define i32 @AccessGlobSt_0_2 |
| ; CHECK-NOT: __asan_report |
| ; CHECK: ret i32 %0 |
| } |
| |
| ; GlobSt is accessed out of bounds -- can't optimize |
| define i32 @AccessGlobSt_0_12() sanitize_address { |
| entry: |
| %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 0, i64 12), align 8 |
| ret i32 %0 |
| ; CHECK-LABEL: define i32 @AccessGlobSt_0_12 |
| ; CHECK: __asan_report |
| ; CHECK: ret i32 |
| } |
| |
| ; GlobSt is accessed with Gep that has non-0 first index -- can't optimize. |
| define i32 @AccessGlobSt_1_2() sanitize_address { |
| entry: |
| %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 1, i64 2), align 8 |
| ret i32 %0 |
| ; CHECK-LABEL: define i32 @AccessGlobSt_1_2 |
| ; CHECK: __asan_report |
| ; CHECK: ret i32 |
| } |
| |
| ; GlobDy is declared with dynamic initializer -- can't optimize. |
| define i32 @AccessGlobDy_0_2() sanitize_address { |
| entry: |
| %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobDy, i64 0, i64 2), align 8 |
| ret i32 %0 |
| ; CHECK-LABEL: define i32 @AccessGlobDy_0_2 |
| ; CHECK: __asan_report |
| ; CHECK: ret i32 |
| } |
| |
| ; GlobEx is an external global -- can't optimize. |
| define i32 @AccessGlobEx_0_2() sanitize_address { |
| entry: |
| %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobEx, i64 0, i64 2), align 8 |
| ret i32 %0 |
| ; CHECK-LABEL: define i32 @AccessGlobEx_0_2 |
| ; CHECK: __asan_report |
| ; CHECK: ret i32 |
| } |
| |
| |
| !llvm.asan.globals = !{!0} |
| !0 = !{[10 x i32]* @GlobDy, null, null, i1 true, i1 false} |
| |
| ; CHECK-LABEL: define internal void @asan.module_ctor |
| ; CHECK-NOT: ret |
| ; CHECK: call void @__asan_register_elf_globals |
| ; CHECK: ret |
| |
| ; CHECK-LABEL: define internal void @asan.module_dtor |
| ; CHECK-NOT: ret |
| ; CHECK: call void @__asan_unregister_elf_globals |
| ; CHECK: ret |