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| author | Dennis Zhang <dennis.zhang@arm.com> | 2019-11-19 13:43:39 +0000 |
|---|---|---|
| committer | Kyrylo Tkachov <ktkachov@gcc.gnu.org> | 2019-11-19 13:43:39 +0000 |
| commit | ef01e6bbeb7e7e3fb33ca501764a1dc6a04d5210 (patch) | |
| tree | f84eb2d6cf761406fa4d455369c59a225df727f7 /gcc/doc/invoke.texi | |
| parent | 35ba842f23769782d1b12f31aa2cdfce70ece031 (diff) | |
| download | gcc-ef01e6bbeb7e7e3fb33ca501764a1dc6a04d5210.zip gcc-ef01e6bbeb7e7e3fb33ca501764a1dc6a04d5210.tar.gz gcc-ef01e6bbeb7e7e3fb33ca501764a1dc6a04d5210.tar.bz2 | |
[AArch64] Implement Armv8.5-A memory tagging (MTE) intrinsics
2019-11-19 Dennis Zhang <dennis.zhang@arm.com>
* config/aarch64/aarch64-builtins.c (enum aarch64_builtins): Add
AARCH64_MEMTAG_BUILTIN_START, AARCH64_MEMTAG_BUILTIN_IRG,
AARCH64_MEMTAG_BUILTIN_GMI, AARCH64_MEMTAG_BUILTIN_SUBP,
AARCH64_MEMTAG_BUILTIN_INC_TAG, AARCH64_MEMTAG_BUILTIN_SET_TAG,
AARCH64_MEMTAG_BUILTIN_GET_TAG, and AARCH64_MEMTAG_BUILTIN_END.
(aarch64_init_memtag_builtins): New.
(AARCH64_INIT_MEMTAG_BUILTINS_DECL): New macro.
(aarch64_general_init_builtins): Call aarch64_init_memtag_builtins.
(aarch64_expand_builtin_memtag): New.
(aarch64_general_expand_builtin): Call aarch64_expand_builtin_memtag.
(AARCH64_BUILTIN_SUBCODE): New macro.
(aarch64_resolve_overloaded_memtag): New.
(aarch64_resolve_overloaded_builtin_general): New. Call
aarch64_resolve_overloaded_memtag to handle overloaded MTE builtins.
* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins): Define
__ARM_FEATURE_MEMORY_TAGGING when enabled.
(aarch64_resolve_overloaded_builtin): Call
aarch64_resolve_overloaded_builtin_general.
* config/aarch64/aarch64-protos.h
(aarch64_resolve_overloaded_builtin_general): New declaration.
* config/aarch64/aarch64.h (AARCH64_ISA_MEMTAG): New macro.
(TARGET_MEMTAG): Likewise.
* config/aarch64/aarch64.md (UNSPEC_GEN_TAG): New unspec.
(UNSPEC_GEN_TAG_RND, and UNSPEC_TAG_SPACE): Likewise.
(irg, gmi, subp, addg, ldg, stg): New instructions.
* config/aarch64/arm_acle.h (__arm_mte_create_random_tag): New macro.
(__arm_mte_exclude_tag, __arm_mte_ptrdiff): Likewise.
(__arm_mte_increment_tag, __arm_mte_set_tag): Likewise.
(__arm_mte_get_tag): Likewise.
* config/aarch64/predicates.md (aarch64_memtag_tag_offset): New.
(aarch64_granule16_uimm6, aarch64_granule16_simm9): New.
* config/arm/types.md (memtag): New.
* doc/invoke.texi (-memtag): Update description.
2019-11-19 Dennis Zhang <dennis.zhang@arm.com>
* gcc.target/aarch64/acle/memtag_1.c: New test.
* gcc.target/aarch64/acle/memtag_2.c: New test.
* gcc.target/aarch64/acle/memtag_3.c: New test.
From-SVN: r278444
Diffstat (limited to 'gcc/doc/invoke.texi')
| -rw-r--r-- | gcc/doc/invoke.texi | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 2897982..2117e5e 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -16280,9 +16280,8 @@ Enable the Armv8.5-a Random Number instructions. This option is only to enable the extension at the assembler level and does not affect code generation. @item memtag -Enable the Armv8.5-a Memory Tagging Extensions. This option is only to -enable the extension at the assembler level and does not affect code -generation. +Enable the Armv8.5-a Memory Tagging Extensions. +Use of this option with architectures prior to Armv8.5-A is not supported. @item sb Enable the Armv8-a Speculation Barrier instruction. This option is only to enable the extension at the assembler level and does not affect code |