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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 | |
| 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')
| -rw-r--r-- | gcc/doc/extend.texi | 7 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 9 |
2 files changed, 13 insertions, 3 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 diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index cad32c6..4e2cf8f 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1103,7 +1103,8 @@ See RS/6000 and PowerPC Options. -mpclmul -mfsgsbase -mrdrnd -mf16c -mfma @gol -mprefetchwt1 -mclflushopt -mxsavec -mxsaves @gol -msse4a -m3dnow -mpopcnt -mabm -mbmi -mtbm -mfma4 -mxop -mlzcnt @gol --mbmi2 -mfxsr -mxsave -mxsaveopt -mrtm -mlwp -mmpx -mmwaitx -mclzero -mthreads @gol +-mbmi2 -mfxsr -mxsave -mxsaveopt -mrtm -mlwp -mmpx -mmwaitx -mclzero +-mpku -mthreads @gol -mms-bitfields -mno-align-stringops -minline-all-stringops @gol -minline-stringops-dynamically -mstringop-strategy=@var{alg} @gol -mmemcpy-strategy=@var{strategy} -mmemset-strategy=@var{strategy} @gol @@ -22625,7 +22626,7 @@ AVX512CD instruction set support. @item skylake-avx512 Intel Skylake Server CPU with 64-bit extensions, MOVBE, MMX, SSE, SSE2, SSE3, -SSSE3, SSE4.1, SSE4.2, POPCNT, AVX, AVX2, AES, PCLMUL, FSGSBASE, RDRND, FMA, +SSSE3, SSE4.1, SSE4.2, POPCNT, PKU, AVX, AVX2, AES, PCLMUL, FSGSBASE, RDRND, FMA, BMI, BMI2, F16C, RDSEED, ADCX, PREFETCHW, CLFLUSHOPT, XSAVEC, XSAVES, AVX512F, AVX512VL, AVX512BW, AVX512DQ and AVX512CD instruction set support. @@ -23247,11 +23248,13 @@ preferred alignment to @option{-mpreferred-stack-boundary=2}. @need 200 @itemx -mclzero @opindex mclzero +@itemx -mpku +@opindex mpku These switches enable the use of instructions in the MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, AVX, AVX2, AVX512F, AVX512PF, AVX512ER, AVX512CD, SHA, AES, PCLMUL, FSGSBASE, RDRND, F16C, FMA, SSE4A, FMA4, XOP, LWP, ABM, AVX512VL, AVX512BW, AVX512DQ, AVX512IFMA AVX512VBMI, BMI, BMI2, FXSR, -XSAVE, XSAVEOPT, LZCNT, RTM, MPX, MWAITX or 3DNow!@: +XSAVE, XSAVEOPT, LZCNT, RTM, MPX, MWAITX, PKU or 3DNow!@: extended instruction sets. Each has a corresponding @option{-mno-} option to disable use of these instructions. |