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; Test non-default shadow mapping scale and offset.
;
; RUN: opt < %s -asan -asan-mapping-scale=2 -asan-mapping-offset-log=0 -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"
; Test that ASan tells scale and offset to runtime.
; CHECK: @__asan_mapping_offset = linkonce_odr constant i64 0
; CHECK: @__asan_mapping_scale = linkonce_odr constant i64 2
define i32 @test_load(i32* %a) sanitize_address {
; CHECK: @test_load
; CHECK-NOT: load
; CHECK: %[[LOAD_ADDR:[^ ]*]] = ptrtoint i32* %a to i64
; CHECK: lshr i64 %[[LOAD_ADDR]], 2
; No need in shift for zero offset.
; CHECK-NOT: or i64
; CHECK: %[[LOAD_SHADOW_PTR:[^ ]*]] = inttoptr
; CHECK: %[[LOAD_SHADOW:[^ ]*]] = load i8* %[[LOAD_SHADOW_PTR]]
; CHECK: icmp ne i8
; CHECK: br i1 %{{.*}}, label %{{.*}}, label %{{.*}}
; No need in slow path for i32 and mapping scale equal to 2.
; CHECK-NOT: and i64 %[[LOAD_ADDR]]
;
; The crash block reports the error.
; CHECK: call void @__asan_report_load4(i64 %[[LOAD_ADDR]])
; CHECK: unreachable
;
; The actual load.
; CHECK: %tmp1 = load i32* %a
; CHECK: ret i32 %tmp1
entry:
%tmp1 = load i32* %a
ret i32 %tmp1
}
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