1; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-globals-live-support=1 -S | FileCheck %s 2; RUN: opt < %s -passes='asan-pipeline' -asan-globals-live-support=1 -S | FileCheck %s 3; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-globals-live-support=1 -asan-mapping-scale=5 -S | FileCheck %s 4; RUN: opt < %s -passes='asan-pipeline' -asan-globals-live-support=1 -asan-mapping-scale=5 -S | FileCheck %s 5target 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" 6target triple = "x86_64-unknown-linux-gnu" 7@xxx = global i32 0, align 4 8 9; If a global is present, __asan_[un]register_globals should be called from 10; module ctor/dtor 11 12; CHECK: @___asan_gen_ = private constant [8 x i8] c"<stdin>\00", align 1 13; CHECK: llvm.global_ctors 14; CHECK: llvm.global_dtors 15 16; Test that we don't instrument global arrays with static initializer 17; indexed with constants in-bounds. But instrument all other cases. 18 19@GlobSt = global [10 x i32] zeroinitializer, align 16 ; static initializer 20@GlobDy = global [10 x i32] zeroinitializer, align 16 ; dynamic initializer 21@GlobEx = external global [10 x i32] , align 16 ; extern initializer 22 23; GlobSt is declared here, and has static initializer -- ok to optimize. 24define i32 @AccessGlobSt_0_2() sanitize_address { 25entry: 26 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 0, i64 2), align 8 27 ret i32 %0 28; CHECK-LABEL: define i32 @AccessGlobSt_0_2 29; CHECK-NOT: __asan_report 30; CHECK: ret i32 %0 31} 32 33; GlobSt is accessed out of bounds -- can't optimize 34define i32 @AccessGlobSt_0_12() sanitize_address { 35entry: 36 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 0, i64 12), align 8 37 ret i32 %0 38; CHECK-LABEL: define i32 @AccessGlobSt_0_12 39; CHECK: __asan_report 40; CHECK: ret i32 41} 42 43; GlobSt is accessed with Gep that has non-0 first index -- can't optimize. 44define i32 @AccessGlobSt_1_2() sanitize_address { 45entry: 46 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobSt, i64 1, i64 2), align 8 47 ret i32 %0 48; CHECK-LABEL: define i32 @AccessGlobSt_1_2 49; CHECK: __asan_report 50; CHECK: ret i32 51} 52 53; GlobDy is declared with dynamic initializer -- can't optimize. 54define i32 @AccessGlobDy_0_2() sanitize_address { 55entry: 56 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobDy, i64 0, i64 2), align 8 57 ret i32 %0 58; CHECK-LABEL: define i32 @AccessGlobDy_0_2 59; CHECK: __asan_report 60; CHECK: ret i32 61} 62 63; GlobEx is an external global -- can't optimize. 64define i32 @AccessGlobEx_0_2() sanitize_address { 65entry: 66 %0 = load i32, i32* getelementptr inbounds ([10 x i32], [10 x i32]* @GlobEx, i64 0, i64 2), align 8 67 ret i32 %0 68; CHECK-LABEL: define i32 @AccessGlobEx_0_2 69; CHECK: __asan_report 70; CHECK: ret i32 71} 72 73 74!llvm.asan.globals = !{!0} 75!0 = !{[10 x i32]* @GlobDy, null, null, i1 true, i1 false} 76 77; CHECK-LABEL: define internal void @asan.module_ctor 78; CHECK-NOT: ret 79; CHECK: call void @__asan_register_elf_globals 80; CHECK: ret 81 82; CHECK-LABEL: define internal void @asan.module_dtor 83; CHECK-NOT: ret 84; CHECK: call void @__asan_unregister_elf_globals 85; CHECK: ret 86