[compiler-rt] [hwasan] Fixing relocation R_AARCH64_CONDBR19 out of range (PR #67354)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

<details>
<summary>Changes</summary>

__hwasan_tag_mismatch is for very old builds compartibility,
so additional jump is not a concern.

---
Full diff: https://github.com/llvm/llvm-project/pull/67354.diff


1 Files Affected:

- (modified) compiler-rt/lib/hwasan/hwasan_tag_mismatch_aarch64.S (+7-3) 


``````````diff
diff --git a/compiler-rt/lib/hwasan/hwasan_tag_mismatch_aarch64.S b/compiler-rt/lib/hwasan/hwasan_tag_mismatch_aarch64.S
index bcb0df42019029d..a472f5772b83ce6 100644
--- a/compiler-rt/lib/hwasan/hwasan_tag_mismatch_aarch64.S
+++ b/compiler-rt/lib/hwasan/hwasan_tag_mismatch_aarch64.S
@@ -89,22 +89,26 @@ __hwasan_tag_mismatch:
   ubfx x16, x0, #4, #52
   ldrb w16, [x9, x16]
   cmp w16, #0xf
-  b.hi __hwasan_tag_mismatch_v2
+  b.hi mismatch
   cmp w16, w17
-  b.lo __hwasan_tag_mismatch_v2
+  b.lo mismatch
 
   // Load the real tag from the last byte of the granule and compare against
   // the pointer tag.
   orr x16, x0, #0xf
   ldrb w16, [x16]
   cmp x16, x0, lsr #56
-  b.ne __hwasan_tag_mismatch_v2
+  b.ne mismatch
 
   // Restore x0, x1 and sp to their values from before the __hwasan_tag_mismatch
   // call and resume execution.
   ldp x0, x1, [sp], #256
   ret
 
+mismatch:
+  b __hwasan_tag_mismatch_v2
+
+
 .global __hwasan_tag_mismatch_v2
 .type __hwasan_tag_mismatch_v2, %function
 __hwasan_tag_mismatch_v2:

``````````

</details>


https://github.com/llvm/llvm-project/pull/67354