1; Test -asan-force-dynamic-shadow flag. 2; 3; RUN: opt -passes=asan -S -asan-force-dynamic-shadow=1 < %s | FileCheck %s --check-prefixes=CHECK,CHECK-FDS 4; RUN: opt -passes=asan -S -asan-force-dynamic-shadow=0 < %s | FileCheck %s --check-prefixes=CHECK,CHECK-NDS 5 6target triple = "x86_64-unknown-linux-gnu" 7 8define i32 @test_load(ptr %a) sanitize_address { 9; First instrumentation in the function must be to load the dynamic shadow 10; address into a local variable. 11; CHECK-LABEL: @test_load 12; CHECK: entry: 13; CHECK-FDS-NEXT: %[[SHADOW:[^ ]*]] = load i64, ptr @__asan_shadow_memory_dynamic_address 14; CHECK-NDS-NOT: __asan_shadow_memory_dynamic_address 15 16; Shadow address is loaded and added into the whole offset computation. 17; CHECK-FDS: add i64 %{{.*}}, %[[SHADOW]] 18 19entry: 20 %tmp1 = load i32, ptr %a, align 4 21 ret i32 %tmp1 22} 23