`%plt` is a redundant relocation specifier: `bl %plt(foo)` is identical
to `bl foo`. Let's replace VK_CALL/VK_CALL_PLT with R_LARCH_B26 and
remove the only specifier constants.
Pull Request: https://github.com/llvm/llvm-project/pull/138632
Because most of tests assume target-abi=`lp64d`, adding the
corresponding feature is reasonable.
rg -l loongarch -g '!*.s' | xargs sed -i '/mtriple=loongarch/ {/-mattr=/!{/target-abi/! s/mtriple=loongarch.. /&-mattr=+d /}}'
Prior to this change, stack realignment was achieved using the SRLI/SLLI
instructions in two steps. With this patch, stack realignment is
optimized using a single `BSTRINS` instruction.
Reviewed By: SixWeining, xen0n
Differential Revision: https://reviews.llvm.org/D158384
