On 07/26/2018 03:13 AM, Alan Hayward wrote: > Add the clobber high expressions to tls_desc for aarch64. > It also adds three tests. > > In addition I also tested by taking the gcc torture test suite and making > all global variables __thread. Then emended the suite to compile with -fpic, > save the .s file and only for one given O level. > I ran this before and after the patch and compared the resulting .s files, > ensuring that there were no ASM changes. > I discarded the 10% of tests that failed to compile (due to the code in > the test now being invalid C). > I did this for O0,O2,O3 on both x86 and aarch64 and observed no difference > between ASM files before and after the patch. > > Alan. > > 2018-07-25 Alan Hayward <alan.hayw...@arm.com> > > gcc/ > * config/aarch64/aarch64.md: Add clobber highs to tls_desc. > > gcc/testsuite/ > * gcc.target/aarch64/sve_tls_preserve_1.c: New test. > * gcc.target/aarch64/sve_tls_preserve_2.c: New test. > * gcc.target/aarch64/sve_tls_preserve_3.c: New test. AArch64 specific, so leaving it to the AArch64 maintainers to handle review.
jeff
