From: Richard Henderson <r...@twiddle.net> Changes since v2: * Committed half of the patch set. * Split inline TImode support from out-of-line patches. * Removed the ST<OP> out-of-line functions, to match inline. * Moved the out-of-line functions to assembly.
What I have not done, but is now a possibility, is to use a custom calling convention for the out-of-line routines. I now only clobber 2 (or 3, for TImode) temp regs and set a return value. r~ Richard Henderson (6): aarch64: Extend %R for integer registers aarch64: Implement TImode compare-and-swap aarch64: Tidy aarch64_split_compare_and_swap aarch64: Add out-of-line functions for LSE atomics aarch64: Implement -matomic-ool Enable -matomic-ool by default gcc/config/aarch64/aarch64-protos.h | 13 + gcc/common/config/aarch64/aarch64-common.c | 6 +- gcc/config/aarch64/aarch64.c | 211 ++++++++++++---- .../atomic-comp-swap-release-acquire.c | 2 +- .../gcc.target/aarch64/atomic-op-acq_rel.c | 2 +- .../gcc.target/aarch64/atomic-op-acquire.c | 2 +- .../gcc.target/aarch64/atomic-op-char.c | 2 +- .../gcc.target/aarch64/atomic-op-consume.c | 2 +- .../gcc.target/aarch64/atomic-op-imm.c | 2 +- .../gcc.target/aarch64/atomic-op-int.c | 2 +- .../gcc.target/aarch64/atomic-op-long.c | 2 +- .../gcc.target/aarch64/atomic-op-relaxed.c | 2 +- .../gcc.target/aarch64/atomic-op-release.c | 2 +- .../gcc.target/aarch64/atomic-op-seq_cst.c | 2 +- .../gcc.target/aarch64/atomic-op-short.c | 2 +- .../aarch64/atomic_cmp_exchange_zero_reg_1.c | 2 +- .../atomic_cmp_exchange_zero_strong_1.c | 2 +- .../gcc.target/aarch64/sync-comp-swap.c | 2 +- .../gcc.target/aarch64/sync-op-acquire.c | 2 +- .../gcc.target/aarch64/sync-op-full.c | 2 +- libgcc/config/aarch64/lse-init.c | 45 ++++ gcc/config/aarch64/aarch64.opt | 4 + gcc/config/aarch64/atomics.md | 185 +++++++++++++- gcc/config/aarch64/iterators.md | 3 + gcc/doc/invoke.texi | 14 +- libgcc/config.host | 4 + libgcc/config/aarch64/lse.S | 238 ++++++++++++++++++ libgcc/config/aarch64/t-lse | 44 ++++ 28 files changed, 717 insertions(+), 84 deletions(-) create mode 100644 libgcc/config/aarch64/lse-init.c create mode 100644 libgcc/config/aarch64/lse.S create mode 100644 libgcc/config/aarch64/t-lse -- 2.17.2
