+; Test basic address sanitizer instrumentation.
+;
+; RUN: opt < %s -asan -S | FileCheck %s
+
+target 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"
+target triple = "x86_64-unknown-linux-gnu"
+
+define i32 @test_load(i32* %a) address_safety {
+; CHECK: @test_load
+; CHECK-NOT: load
+; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
+; CHECK: lshr i64 %[[LOAD_ADDR]], 3
+; CHECK: or i64
+; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
+; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8* %[[LOAD_SHADOW_PTR]]
+; CHECK: icmp ne i8
+; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
+;
+; The actual load comes next because ASan adds the last instrumentation block
+; to the end of the function.
+; CHECK: %tmp1 = load i32* %a
+; CHECK: ret i32 %tmp1
+;
+; First instrumentation block refines the shadow test.
+; CHECK: and i64 %[[LOAD_ADDR]], 7
+; CHECK: add i64 %{{.*}}, 3
+; CHECK: trunc i64 %{{.*}} to i8
+; CHECK: icmp sge i8 %{{.*}}, %[[LOAD_SHADOW]]
+; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
+;
+; Final instrumentation block reports the error.
+; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]]) noreturn
+; CHECK: unreachable
+
+entry:
+ %tmp1 = load i32* %a
+ ret i32 %tmp1
+}
+
+define void @test_store(i32* %a) address_safety {
+; CHECK: @test_store
+; CHECK-NOT: store
+; CHECK: %[[STORE_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
+; CHECK: lshr i64 %[[STORE_ADDR]], 3
+; CHECK: or i64
+; CHECK: %[[STORE_SHADOW_PTR:[^ ]*]] = inttoptr
+; CHECK: %[[STORE_SHADOW:[^ ]*]] = load i8* %[[STORE_SHADOW_PTR]]
+; CHECK: icmp ne i8
+; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
+;
+; The actual store comes next because ASan adds the last instrumentation block
+; to the end of the function.
+; CHECK: store i32 42, i32* %a
+; CHECK: ret void
+;
+; First instrumentation block refines the shadow test.
+; CHECK: and i64 %[[STORE_ADDR]], 7
+; CHECK: add i64 %{{.*}}, 3
+; CHECK: trunc i64 %{{.*}} to i8
+; CHECK: icmp sge i8 %{{.*}}, %[[STORE_SHADOW]]
+; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
+;
+; Final instrumentation block reports the error.
+; CHECK: call void @__asan_report_store4(i64 %[[STORE_ADDR]]) noreturn
+; CHECK: unreachable
+
+entry:
+ store i32 42, i32* %a
+ ret void
+}