[PATCH] D12161: [compiler-rt] Add aarch64 syscall optimization support

[Adhemerval Zanella via llvm-commits]

zatrazz added a comment.

The test is basically run the sanitizers tests and check for regression, since all internal syscalls will use the wrappers instead of normal syscall libc function.


================
Comment at: lib/sanitizer_common/sanitizer_syscall_linux_aarch64.inc:131
@@ +130,3 @@
+
+bool internal_iserror(uptr retval, int *rverrno) {
+  if (retval >= (uptr)-4095) {
----------------
rengolin wrote:
> Some comments about this would be welcome.
This is the default return code Linux assumes for syscall failures (you can check on libc projects, like glibc and must, that they use the same return check value).


http://reviews.llvm.org/D12161