1 ; Test non-default shadow mapping scale and offset.
3 ; RUN: opt < %s -asan -asan-mapping-scale=2 -asan-mapping-offset-log=0 -S | FileCheck %s
5 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"
6 target triple = "x86_64-unknown-linux-gnu"
8 ; Test that ASan tells scale and offset to runtime.
9 ; CHECK: @__asan_mapping_offset = linkonce_odr constant i64 0
10 ; CHECK: @__asan_mapping_scale = linkonce_odr constant i64 2
12 define i32 @test_load(i32* %a) sanitize_address {
15 ; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
16 ; CHECK: lshr i64 %[[LOAD_ADDR]], 2
18 ; No need in shift for zero offset.
21 ; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
22 ; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8* %[[LOAD_SHADOW_PTR]]
24 ; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
26 ; No need in slow path for i32 and mapping scale equal to 2.
27 ; CHECK-NOT: and i64 %[[LOAD_ADDR]]
29 ; The crash block reports the error.
30 ; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]])
34 ; CHECK: %tmp1 = load i32* %a
35 ; CHECK: ret i32 %tmp1