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| author | Kirill Yukhin <kirill.yukhin@intel.com> | 2015-12-24 11:05:34 +0000 |
|---|---|---|
| committer | Kirill Yukhin <kyukhin@gcc.gnu.org> | 2015-12-24 11:05:34 +0000 |
| commit | 41a4ef2243b0128f6f35b3da8f7d18a609a923ea (patch) | |
| tree | 211be33d7501be799b39b9f03a5d06b4b070eff5 /gcc/doc/extend.texi | |
| parent | 6549bdc6beb08b4d5737415b1ed97081e7a900d3 (diff) | |
| download | gcc-41a4ef2243b0128f6f35b3da8f7d18a609a923ea.zip gcc-41a4ef2243b0128f6f35b3da8f7d18a609a923ea.tar.gz gcc-41a4ef2243b0128f6f35b3da8f7d18a609a923ea.tar.bz2 | |
Introduce support for PKU instructions.
gcc/
* common/config/i386/i386-common.c (OPTION_MASK_ISA_PKU_SET): New.
(OPTION_MASK_ISA_PKU_UNSET): Ditto.
(ix86_handle_option): Handle OPT_mpku.
* config.gcc: Add pkuintrin.h to i[34567]86-*-* and x86_64-*-*
targets.
* config/i386/cpuid.h (host_detect_local_cpu): Detect PKU feature.
* config/i386/i386-c.c (ix86_target_macros_internal): Handle PKU ISA
flag.
* config/i386/i386.c (ix86_target_string): Add "-mpku" to
ix86_target_opts.
(ix86_option_override_internal): Define PTA_PKU, mention new key
in skylake-avx512. Handle new ISA bits.
(ix86_valid_target_attribute_inner_p): Add "pku".
(enum ix86_builtins): Add IX86_BUILTIN_RDPKRU and IX86_BUILTIN_WRPKRU.
(builtin_description bdesc_special_args[]): Add new built-ins.
* config/i386/i386.h (define TARGET_PKU): New.
(define TARGET_PKU_P): Ditto.
* config/i386/i386.md (define_c_enum "unspecv"): Add UNSPEC_PKU.
(define_expand "rdpkru"): New.
(define_insn "*rdpkru"): Ditto.
(define_expand "wrpkru"): Ditto.
(define_insn "*wrpkru"): Ditto.
* config/i386/i386.opt (mpku): Ditto.
* config/i386/pkuintrin.h: New file.
* config/i386/x86intrin.h: Include pkuintrin.h
* doc/extend.texi: Describe new built-ins.
* doc/invoke.texi: Describe new switches.
gcc/testsuite/
* g++.dg/other/i386-2.C: Add -mpku.
* g++.dg/other/i386-3.C: Ditto.
* gcc.target/i386/rdpku-1.c: New test.
* gcc.target/i386/sse-12.c: Add -mpku.
* gcc.target/i386/sse-13.c: Ditto.
* gcc.target/i386/sse-22.c: Ditto.
* gcc.target/i386/sse-33.c: Ditto.
* gcc.target/i386/wrpku-1.c: New test.
From-SVN: r231944
Diffstat (limited to 'gcc/doc/extend.texi')
| -rw-r--r-- | gcc/doc/extend.texi | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index 883d9b3..4578925 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -18343,6 +18343,13 @@ All of them generate the machine instruction that is part of the name. void __builtin_i32_clzero (void *) @end smallexample +The following built-in functions are available when @option{-mpku} is used. +They generate reads and writes to PKRU. +@smallexample +void __builtin_ia32_wrpkru (unsigned int) +unsigned int __builtin_ia32_rdpkru () +@end smallexample + @node x86 transactional memory intrinsics @subsection x86 Transactional Memory Intrinsics |