This is a respin of a AArch64 patch that adds support for builtin arithmetic overflow operations. This update separates the patch into multiple pieces and addresses comments made by Richard Earnshaw here:
https://gcc.gnu.org/ml/gcc-patches/2017-07/msg00249.html Original patch and motivation for patch here: https://gcc.gnu.org/ml/gcc-patches/2017-05/msg01512.html This patch primarily contains common functions in aarch64.c for generating TImode scratch registers, and common rtl functions utilized by the overflow patterns in aarch64.md. In addition a new mode representing overflow CC_Vmode is introduced. Bootstrapped and tested on aarch64-linux-gnu. Okay for trunk? 2018-05-31 Michael Collison <michael.colli...@arm.com> Richard Henderson <r...@redhat.com> * config/aarch64/aarch64-modes.def (CC_V): New. * config/aarch64/aarch64-protos.h (aarch64_add_128bit_scratch_regs): Declare (aarch64_subv_128bit_scratch_regs): Declare. (aarch64_expand_subvti): Declare. (aarch64_gen_unlikely_cbranch): Declare * config/aarch64/aarch64.c (aarch64_select_cc_mode): Test for signed overflow using CC_Vmode. (aarch64_get_condition_code_1): Handle CC_Vmode. (aarch64_gen_unlikely_cbranch): New function. (aarch64_add_128bit_scratch_regs): New function. (aarch64_subv_128bit_scratch_regs): New function. (aarch64_expand_subvti): New function.
gnutools-6308-pt1.patch
Description: gnutools-6308-pt1.patch
