Fix machine-sink-cache-invalidation post - 8abb2ac

The test was added after a9d0ab2, which is what 8abb2ac reverted. The
test is sensitive to the exact instruction sequence in the output, which
has changed.

Re-gen-ed the test with update_llc_test_checks.py

Author: mtrofin

llvm/test/CodeGen/AArch64/machine-sink-cache-invalidation.ll

@@ -22,7 +22,8 @@ define i32 @nsis_BZ2_bzDecompress(ptr %pos.i, i1 %cmp661.not3117.i, i1 %exitcond
 ; CHECK-NEXT:    // in Loop: Header=BB0_2 Depth=1
 ; CHECK-NEXT:    mov x9, xzr
 ; CHECK-NEXT:    ldrb w9, [x9]
-; CHECK-NEXT:    strb wzr, [x0, x9]
+; CHECK-NEXT:    add x9, x0, x9
+; CHECK-NEXT:    strb wzr, [x9]
 ; CHECK-NEXT:    b .LBB0_1
 ; CHECK-NEXT:  .LBB0_4: // %for.end677.i
 ; CHECK-NEXT:    mov w0, wzr