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55b75f3fca
Allowing overriding the default ASAN shadow mapping offset with the -asan-shadow-offset option, and allow zero to be specified for both offset and scale. Patch by Aaron Carroll <aaronc@apple.com>. llvm-svn: 268724
40 lines
1.2 KiB
LLVM
40 lines
1.2 KiB
LLVM
; Test that the scale (-asan-mapping-scale) and offset (-asan-mapping-offset) command-line options work as expected
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;
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; RUN: opt < %s -asan -asan-module -asan-mapping-offset 0xdeadbeef -S | FileCheck --check-prefix=CHECK-OFFSET %s
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; RUN: opt < %s -asan -asan-module -asan-mapping-scale 1 -S | FileCheck --check-prefix=CHECK-SCALE %s
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; RUN: opt < %s -asan -asan-module -asan-mapping-offset 0xc0ffee -asan-mapping-scale 0 -S | FileCheck --check-prefix=CHECK-BOTH %s
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @read_offset(i32* %a) sanitize_address {
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entry:
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%tmp1 = load i32, i32* %a, align 4
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ret i32 %tmp1
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}
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; CHECK-OFFSET-LABEL: @read_offset
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; CHECK-OFFSET-NOT: ret
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; CHECK-OFFSET: lshr {{.*}} 3
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; CHECK-OFFSET-NEXT: add{{.*}}3735928559
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; CHECK-OFFSET: ret
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define i32 @read_scale(i32* %a) sanitize_address {
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entry:
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%tmp1 = load i32, i32* %a, align 4
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ret i32 %tmp1
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}
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; CHECK-SCALE-LABEL: @read_scale
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; CHECK-SCALE-NOT: ret
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; CHECK-SCALE: lshr {{.*}} 1
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; CHECK-SCALE-NEXT: add{{.*}}
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; CHECK-SCALE: ret
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define i32 @read_both(i32* %a) sanitize_address {
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entry:
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%tmp1 = load i32, i32* %a, align 4
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ret i32 %tmp1
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}
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; CHECK-BOTH-LABEL: @read_both
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; CHECK-BOTH-NOT: ret
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; CHECK-BOTH: lshr {{.*}} 0
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; CHECK-BOTH-NEXT: add{{.*}}12648430
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; CHECK-BOTH: ret
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