add new target-specific abi0 pass

The general idea is to give abis a
chance to talk before we've done all
the optimizations. Currently, all
targets eliminate {par,arg,ret}{sb,ub,...}
during this pass. The forthcoming
arm64_apple will, however, insert
proper extensions during abi0.

Moving forward abis can, for example,
lower small-aggregates passing there
so that memory optimizations can
interact better with function calls.
This commit is contained in:
Quentin Carbonneaux 2022-08-31 17:09:04 +02:00
parent 0b26cd4f5e
commit a9a70e30a8
7 changed files with 43 additions and 7 deletions

View file

@ -44,7 +44,8 @@ Target T_rv64 = {
.retregs = rv64_retregs,
.argregs = rv64_argregs,
.memargs = rv64_memargs,
.abi = rv64_abi,
.abi0 = elimsb,
.abi1 = rv64_abi,
.isel = rv64_isel,
.emitfn = rv64_emitfn,
.emitfin = elf_emitfin,