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| author | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2020-04-30 13:12:13 +0100 |
|---|---|---|
| committer | Kyrylo Tkachov <kyrylo.tkachov@arm.com> | 2020-04-30 13:12:13 +0100 |
| commit | cd4b68527988f42c10c0d6c10e812d299887e0c2 (patch) | |
| tree | ff3c268027f9a49f4ef336f8bccbf08fc511717a /gcc | |
| parent | 6ac83d350604c3e934d5e8a455ba7ec1c1c0240b (diff) | |
| download | gcc-cd4b68527988f42c10c0d6c10e812d299887e0c2.zip gcc-cd4b68527988f42c10c0d6c10e812d299887e0c2.tar.gz gcc-cd4b68527988f42c10c0d6c10e812d299887e0c2.tar.bz2 | |
[AArch64] Make -moutline-atomics on by default
2020-04-30 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
* config/aarch64/aarch64.h (TARGET_OUTLINE_ATOMICS): Define.
* config/aarch64/aarch64.opt (moutline-atomics): Change to Int variable.
* doc/invoke.texi (moutline-atomics): Document as on by default.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.h | 5 | ||||
| -rw-r--r-- | gcc/config/aarch64/aarch64.opt | 2 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 1 |
4 files changed, 13 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c81801f..c6e2447 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2020-04-30 Kyrylo Tkachov <kyrylo.tkachov@arm.com> + + * config/aarch64/aarch64.h (TARGET_OUTLINE_ATOMICS): Define. + * config/aarch64/aarch64.opt (moutline-atomics): Change to Int variable. + * doc/invoke.texi (moutline-atomics): Document as on by default. + 2020-04-30 Szabolcs Nagy <szabolcs.nagy@arm.com> PR target/94748 diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h index 74236c3..24767c7 100644 --- a/gcc/config/aarch64/aarch64.h +++ b/gcc/config/aarch64/aarch64.h @@ -105,6 +105,11 @@ port. */ #define TARGET_PTRMEMFUNC_VBIT_LOCATION ptrmemfunc_vbit_in_delta + +/* Emit calls to libgcc helpers for atomic operations for runtime detection + of LSE instructions. */ +#define TARGET_OUTLINE_ATOMICS (aarch64_flag_outline_atomics) + /* Align definitions of arrays, unions and structures so that initializations and copies can be made more efficient. This is not ABI-changing, so it only affects places where we can see the diff --git a/gcc/config/aarch64/aarch64.opt b/gcc/config/aarch64/aarch64.opt index 37181b5..d99d14c 100644 --- a/gcc/config/aarch64/aarch64.opt +++ b/gcc/config/aarch64/aarch64.opt @@ -256,7 +256,7 @@ TargetVariable long aarch64_stack_protector_guard_offset = 0 moutline-atomics -Target Report Mask(OUTLINE_ATOMICS) Save +Target Report Var(aarch64_flag_outline_atomics) Init(2) Save Generate local calls to out-of-line atomic operations. -param=aarch64-sve-compare-costs= diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 5bb7d94..527d362 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -16886,6 +16886,7 @@ instruction set. If using a later revision, e.g. @option{-march=armv8.1-a} or @option{-march=armv8-a+lse}, the ARMv8.1-Atomics instructions will be used directly. The same applies when using @option{-mcpu=} when the selected cpu supports the @samp{lse} feature. +This option is on by default. @item -march=@var{name} @opindex march |