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1; Test -asan-force-dynamic-shadow flag.
2;
3; RUN: opt -asan -asan-module -S -asan-force-dynamic-shadow=1 < %s | FileCheck %s --check-prefixes=CHECK,CHECK-FDS
4; RUN: opt -asan -asan-module -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(i32* %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, i64* @__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, i32* %a, align 4
21  ret i32 %tmp1
22}
23