Changes since v1:
* Use config/t-slibgcc-libgcc instead of gcc.c changes.
* Some style fixes.
* Ifdefs to work with old glibc.
* Force TImode registers into even regnos.
Required by CASP, allowed by the ABI, and is seen as the
simplier solution than adding two new register classes.
* Use match_dup instead of matching constraints for CAS{P}.
Matching constraints result in lots of extraneous moves
for TImode, and keeping the expander interface the same
for non-TImode simplifies the code.
r~
Richard Henderson (11):
aarch64: Simplify LSE cas generation
aarch64: Improve cas generation
aarch64: Improve swp generation
aarch64: Improve atomic-op lse generation
aarch64: Emit LSE st<op> instructions
Add visibility to libfunc constructors
aarch64: Add out-of-line functions for LSE atomics
aarch64: Implement -matomic-ool
aarch64: Force TImode values into even registers
aarch64: Implement TImode compare-and-swap
Enable -matomic-ool by default
gcc/config/aarch64/aarch64-protos.h | 20 +-
gcc/optabs-libfuncs.h | 2 +
gcc/common/config/aarch64/aarch64-common.c | 6 +-
gcc/config/aarch64/aarch64.c | 494 +++++++-------
gcc/optabs-libfuncs.c | 26 +-
.../atomic-comp-swap-release-acquire.c | 2 +-
.../gcc.target/aarch64/atomic-inst-ldadd.c | 18 +-
.../gcc.target/aarch64/atomic-inst-ldlogic.c | 54 +-
.../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.c | 282 ++++++++
gcc/config/aarch64/aarch64.opt | 4 +
gcc/config/aarch64/atomics.md | 608 ++++++++++--------
gcc/config/aarch64/iterators.md | 8 +-
gcc/config/aarch64/predicates.md | 12 +
gcc/doc/invoke.texi | 14 +-
libgcc/config.host | 4 +
libgcc/config/aarch64/t-lse | 48 ++
32 files changed, 1058 insertions(+), 576 deletions(-)
create mode 100644 libgcc/config/aarch64/lse.c
create mode 100644 libgcc/config/aarch64/t-lse
--
2.17.1
