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