> The patch was fully tested on x86_64-suse-linux, where it removes half of > the useless stores in the original testcase for PR rtl-optimization/54315, > and manually tested for arm-linux-gnueabi (for now), where it also removes > stores for small structures. Comments? > > 2012-10-08 Eric Botcazou <ebotca...@adacore.com> > > * calls.c (expand_call): Don't deal specifically with BLKmode values > returned in naked registers. > * expr.h (copy_blkmode_from_reg): Adjust prototype. > * expr.c (copy_blkmode_from_reg): Rename first parameter into TARGET and > make it required. Assert that SRCREG hasn't BLKmode. Add a couple of > short-circuits for common cases and be prepared for sub-word registers. > (expand_assignment): Call copy_blkmode_from_reg for BLKmode values > returned in naked registers. > (store_expr): Likewise. > (store_field): Likewise.
Applied after testing on x86_64-suse-linux and mips64el-linux-gnu, where it also removes stores for small structures (at least for n32). -- Eric Botcazou
