34 lines
1.2 KiB
LLVM
34 lines
1.2 KiB
LLVM
; RUN: opt < %s -asan -asan-detect-invalid-pointer-cmp -S \
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; RUN: | FileCheck %s --check-prefixes=CMP,NOSUB,ALL
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; RUN: opt < %s -asan -asan-detect-invalid-pointer-sub -S \
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; RUN: | FileCheck %s --check-prefixes=SUB,NOCMP,ALL
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; RUN: opt < %s -asan -asan-detect-invalid-pointer-pair -S \
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; RUN: | FileCheck %s --check-prefixes=CMP,SUB,ALL
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; Support instrumentation of invalid pointer pair detection.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define i32 @mycmp(i8* %p, i8* %q) sanitize_address {
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; ALL-LABEL: @mycmp
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; NOCMP-NOT: call void @__sanitizer_ptr_cmp
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; CMP: [[P:%[0-9A-Za-z]+]] = ptrtoint i8* %p to i64
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; CMP: [[Q:%[0-9A-Za-z]+]] = ptrtoint i8* %q to i64
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%x = icmp ule i8* %p, %q
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; CMP: call void @__sanitizer_ptr_cmp(i64 [[P]], i64 [[Q]])
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%y = zext i1 %x to i32
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ret i32 %y
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}
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define i32 @mysub(i8* %p, i8* %q) sanitize_address {
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; ALL-LABEL: @mysub
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; NOSUB-NOT: call void @__sanitizer_ptr_sub
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; SUB: [[P:%[0-9A-Za-z]+]] = ptrtoint i8* %p to i64
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; SUB: [[Q:%[0-9A-Za-z]+]] = ptrtoint i8* %q to i64
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%x = ptrtoint i8* %p to i64
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%y = ptrtoint i8* %q to i64
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%z = sub i64 %x, %y
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; SUB: call void @__sanitizer_ptr_sub(i64 [[P]], i64 [[Q]])
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%w = trunc i64 %z to i32
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ret i32 %w
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}
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