| Ryan Govostes | 3f37df0 | 2016-05-06 10:25:22 +0000 | [diff] [blame] | 1 | ; Test that the scale (-asan-mapping-scale) and offset (-asan-mapping-offset) command-line options work as expected |
| 2 | ; |
| 3 | ; RUN: opt < %s -asan -asan-module -asan-mapping-offset 0xdeadbeef -S | FileCheck --check-prefix=CHECK-OFFSET %s |
| 4 | ; RUN: opt < %s -asan -asan-module -asan-mapping-scale 1 -S | FileCheck --check-prefix=CHECK-SCALE %s |
| 5 | ; RUN: opt < %s -asan -asan-module -asan-mapping-offset 0xc0ffee -asan-mapping-scale 0 -S | FileCheck --check-prefix=CHECK-BOTH %s |
| 6 | target triple = "x86_64-unknown-linux-gnu" |
| 7 | |
| 8 | define i32 @read_offset(i32* %a) sanitize_address { |
| 9 | entry: |
| 10 | %tmp1 = load i32, i32* %a, align 4 |
| 11 | ret i32 %tmp1 |
| 12 | } |
| 13 | ; CHECK-OFFSET-LABEL: @read_offset |
| 14 | ; CHECK-OFFSET-NOT: ret |
| 15 | ; CHECK-OFFSET: lshr {{.*}} 3 |
| 16 | ; CHECK-OFFSET-NEXT: add{{.*}}3735928559 |
| 17 | ; CHECK-OFFSET: ret |
| 18 | |
| 19 | define i32 @read_scale(i32* %a) sanitize_address { |
| 20 | entry: |
| 21 | %tmp1 = load i32, i32* %a, align 4 |
| 22 | ret i32 %tmp1 |
| 23 | } |
| 24 | ; CHECK-SCALE-LABEL: @read_scale |
| 25 | ; CHECK-SCALE-NOT: ret |
| 26 | ; CHECK-SCALE: lshr {{.*}} 1 |
| 27 | ; CHECK-SCALE-NEXT: add{{.*}} |
| 28 | ; CHECK-SCALE: ret |
| 29 | |
| 30 | define i32 @read_both(i32* %a) sanitize_address { |
| 31 | entry: |
| 32 | %tmp1 = load i32, i32* %a, align 4 |
| 33 | ret i32 %tmp1 |
| 34 | } |
| 35 | ; CHECK-BOTH-LABEL: @read_both |
| 36 | ; CHECK-BOTH-NOT: ret |
| 37 | ; CHECK-BOTH: lshr {{.*}} 0 |
| 38 | ; CHECK-BOTH-NEXT: add{{.*}}12648430 |
| 39 | ; CHECK-BOTH: ret |