Ported the D64906 technique to EM_386.
If `sh_addralign(.tdata) < sh_addralign(.tbss)`,
we can potentially make `p_vaddr(PT_TLS)%p_align(PT_TLS) != 0`.
ld.so that are known to have problems if p_vaddr%p_align!=0:
* FreeBSD 13.0-CURRENT rtld-elf
* glibc https://sourceware.org/bugzilla/show_bug.cgi?id=24606
New test i386-tls-vaddr-align.s checks our workaround makes p_vaddr%p_align = 0.
Reviewed By: ruiu
Differential Revision: https://reviews.llvm.org/D65865
llvm-svn: 369347
Some tls-*.s tests do not test generic TLS behavior but rather are x86 specific.
Rename them to i386-*.s or x86-64-*.s
Delete tls-static.s: covered by tls-opt.s
Delete tls-opt-no-plt.s: add --implicit-check-not=.plt to x86-64-tls-gdie.s to cover it
Rename tls-dynamic-i686.s to i386-tls-dynamic.s
Rename tls-i686.s to i386-tls-le.s
Rename tls-opt-i686.s to i386-tls-opt.s
Rename tls-opt-iele-i686-nopic.s to i386-tls-opt-iele-nopic.s
Rename tls-dynamic.s to x86-64-tls-dynamic.s . IE should be split off in the future.
Rename tls-error.s to x86-64-reloc-tpoff32-error.s
Rename tls-opt-gdie.s to x86-64-tls-gdie.s
Rename tls-opt-x86_64-noplt.s to x86-64-tls-opt-noplt.s
Rename tls-opt-local.s => x86-64-tls-ie-opt-local.s . It can be merged with x86-64-tls-ie-local.s in the future.
llvm-svn: 367877
Fangrui Song