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[AArch64/GCC][0/N] Refactor prologue/epilogue code and optimize insns generated
- From: Jiong Wang <jiong dot wang at arm dot com>
- To: gcc-patches at gcc dot gnu dot org
- Date: Tue, 22 Jul 2014 15:48:53 +0100
- Subject: [AArch64/GCC][0/N] Refactor prologue/epilogue code and optimize insns generated
- Authentication-results: sourceware.org; auth=none
currently, the implementation of AArch64 prologue/epilogue expand
hooks are a bit unclean.
the major issues are:
* when pushing callee-saved registers, register offset are
calculated by ad-hoc code instead of referencing offset
table initialized in aarch64_layout_frame.
* FP/LR push/restore are done by ad-hoc code, should be
unified with other registers.
* various duplicated code for pushing/restoring core and
* sub-optimal instruction sequences generated for some
the following patch set trying to address above issues in
an incremental way, that the review could be easier.
no regression on aarch64-none-elf little/big endian bare-metal full test.
bootstrap OK on aarch64.
ok to install?