| ; Test -asan-force-dynamic-shadow flag. |
| ; |
| ; RUN: opt -asan -asan-module -S -asan-force-dynamic-shadow=1 < %s | FileCheck %s --check-prefixes=CHECK,CHECK-FDS |
| ; RUN: opt -asan -asan-module -S -asan-force-dynamic-shadow=0 < %s | FileCheck %s --check-prefixes=CHECK,CHECK-NDS |
| |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i32 @test_load(i32* %a) sanitize_address { |
| ; First instrumentation in the function must be to load the dynamic shadow |
| ; address into a local variable. |
| ; CHECK-LABEL: @test_load |
| ; CHECK: entry: |
| ; CHECK-FDS-NEXT: %[[SHADOW:[^ ]*]] = load i64, i64* @__asan_shadow_memory_dynamic_address |
| ; CHECK-NDS-NOT: __asan_shadow_memory_dynamic_address |
| |
| ; Shadow address is loaded and added into the whole offset computation. |
| ; CHECK-FDS add i64 %{{.*}}, %[[SHADOW] ] |
| |
| entry: |
| %tmp1 = load i32, i32* %a, align 4 |
| ret i32 %tmp1 |
| } |
