On Mon, Nov 22, 2021 at 9:40 AM Roger Sayle <ro...@nextmovesoftware.com> wrote: > > > This patch implements PR tree-optimization/103345 to merge adjacent > loads when combined with addition or bitwise xor. The current code > in gimple-ssa-store-merging.c's find_bswap_or_nop alreay handles ior, > so that all that's required is to treat PLUS_EXPR and BIT_XOR_EXPR in > the same way at BIT_IOR_EXPR. Many thanks to Andrew Pinski for > pointing out that this also resolves PR target/98953. > > This patch has been tested on x86_64-pc-linux-gnu with make bootstrap > and make -k check with no new failures. The new testcases should also > pass (but haven't been tested) on other endian targets. > > Ok for mainline?
OK. Thanks, Richard. > > 2021-11-22 Roger Sayle <ro...@nextmovesoftware.com> > > gcc/ChangeLog > PR tree-optimization/98953 > PR tree-optimization/103345 > * gimple-ssa-store-merging.c (find_bswap_or_nop_1): Handle > BIT_XOR_EXPR and PLUS_EXPR the same as BIT_IOR_EXPR. > (pass_optimize_bswap::execute): Likewise. > > gcc/testsuite/ChangeLog > PR tree-optimization/98953 > PR tree-optimization/103345 > * gcc.dg/tree-ssa/pr98953.c: New test case. > * gcc.dg/tree-ssa/pr103345.c: New test case. > > > Thanks in advance, > Roger > -- >
