--- /dev/null
+; 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
+}