> -----Original Message-----
> From: Hu, Lin1 <lin1...@intel.com>
> Sent: Tuesday, October 10, 2023 4:06 PM
> To: Hu, Lin1 <lin1...@intel.com>; gcc-patches@gcc.gnu.org
> Cc: Liu, Hongtao <hongtao....@intel.com>; ubiz...@gmail.com
> Subject: RE: [PATCH] Support Intel USER_MSR
>
> There are some typos In /gcc/doc/extend.texi and /gcc/doc/invoke.texi. They
> should be USER_MSR, not UMSR. I have modified them in my branch.
>
> -----Original Message-----
> From: Hu, Lin1 <lin1...@intel.com>
> Sent: Tuesday, October 10, 2023 3:47 PM
> To: gcc-patches@gcc.gnu.org
> Cc: Liu, Hongtao <hongtao....@intel.com>; ubiz...@gmail.com
> Subject: [PATCH] Support Intel USER_MSR
>
> This patch aims to support Intel USER_MSR.
Ok.
>
> gcc/ChangeLog:
>
> * common/config/i386/cpuinfo.h (get_available_features):
> Detect USER_MSR.
> * common/config/i386/i386-common.cc
> (OPTION_MASK_ISA2_USER_MSR_SET): New.
> (OPTION_MASK_ISA2_USER_MSR_UNSET): Ditto.
> (ix86_handle_option): Handle -musermsr.
> * common/config/i386/i386-cpuinfo.h (enum processor_features):
> Add FEATURE_USER_MSR.
> * common/config/i386/i386-isas.h: Add ISA_NAME_TABLE_ENTRY
> for usermsr.
> * config.gcc: Add usermsrintrin.h
> * config/i386/cpuid.h (bit_USER_MSR): New.
> * config/i386/i386-builtin-types.def:
> Add DEF_FUNCTION_TYPE (VOID, UINT64, UINT64).
> * config/i386/i386-builtins.cc (ix86_init_mmx_sse_builtins):
> Add __builtin_urdmsr and __builtin_uwrmsr.
> * config/i386/i386-builtins.h (ix86_builtins):
> Add IX86_BUILTIN_URDMSR and IX86_BUILTIN_UWRMSR.
> * config/i386/i386-c.cc (ix86_target_macros_internal):
> Define __USER_MSR__.
> * config/i386/i386-expand.cc (ix86_expand_builtin):
> Handle new builtins.
> * config/i386/i386-isa.def (USER_MSR): Add DEF_PTA(USER_MSR).
> * config/i386/i386-options.cc (ix86_valid_target_attribute_inner_p):
> Handle usermsr.
> * config/i386/i386.md (urdmsr): New define_insn.
> (uwrmsr): Ditto.
> * config/i386/i386.opt: Add option -musermsr.
> * config/i386/x86gprintrin.h: Include usermsrintrin.h
> * doc/extend.texi: Document usermsr.
> * doc/invoke.texi: Document -musermsr.
> * doc/sourcebuild.texi: Document target usermsr.
> * config/i386/usermsrintrin.h: New file.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/i386/funcspec-56.inc: Add new target attribute.
> * gcc.target/i386/x86gprintrin-1.c: Add -musermsr for 64bit target.
> * gcc.target/i386/x86gprintrin-2.c: Ditto.
> * gcc.target/i386/x86gprintrin-3.c: Ditto.
> * gcc.target/i386/x86gprintrin-4.c: Add musermsr for 64bit target.
> * gcc.target/i386/x86gprintrin-5.c: Ditto
> * gcc.target/i386/usermsr-1.c: New test.
> * gcc.target/i386/usermsr-2.c: Ditto.
> ---
> gcc/common/config/i386/cpuinfo.h | 2 +
> gcc/common/config/i386/i386-common.cc | 15 +++++
> gcc/common/config/i386/i386-cpuinfo.h | 1 +
> gcc/common/config/i386/i386-isas.h | 1 +
> gcc/config.gcc | 3 +-
> gcc/config/i386/cpuid.h | 1 +
> gcc/config/i386/i386-builtin-types.def | 3 +
> gcc/config/i386/i386-builtins.cc | 8 +++
> gcc/config/i386/i386-builtins.h | 2 +
> gcc/config/i386/i386-c.cc | 2 +
> gcc/config/i386/i386-expand.cc | 35 +++++++++++
> gcc/config/i386/i386-isa.def | 1 +
> gcc/config/i386/i386-options.cc | 4 +-
> gcc/config/i386/i386.md | 24 ++++++++
> gcc/config/i386/i386.opt | 4 ++
> gcc/config/i386/usermsrintrin.h | 60 +++++++++++++++++++
> gcc/config/i386/x86gprintrin.h | 2 +
> gcc/doc/extend.texi | 5 ++
> gcc/doc/invoke.texi | 6 +-
> gcc/doc/sourcebuild.texi | 3 +
> gcc/testsuite/gcc.target/i386/funcspec-56.inc | 2 +
> gcc/testsuite/gcc.target/i386/user_msr-1.c | 20 +++++++
> gcc/testsuite/gcc.target/i386/user_msr-2.c | 16 +++++
> .../gcc.target/i386/x86gprintrin-1.c | 2 +-
> .../gcc.target/i386/x86gprintrin-2.c | 6 +-
> .../gcc.target/i386/x86gprintrin-3.c | 28 ++++++++-
> .../gcc.target/i386/x86gprintrin-4.c | 32 +++++++++-
> .../gcc.target/i386/x86gprintrin-5.c | 6 +-
> 28 files changed, 286 insertions(+), 8 deletions(-) create mode 100644
> gcc/config/i386/usermsrintrin.h create mode 100644
> gcc/testsuite/gcc.target/i386/user_msr-1.c
> create mode 100644 gcc/testsuite/gcc.target/i386/user_msr-2.c
>
> diff --git a/gcc/common/config/i386/cpuinfo.h
> b/gcc/common/config/i386/cpuinfo.h
> index 141d3743316..0f86b44730b 100644
> --- a/gcc/common/config/i386/cpuinfo.h
> +++ b/gcc/common/config/i386/cpuinfo.h
> @@ -838,6 +838,8 @@ get_available_features (struct __processor_model
> *cpu_model,
> set_feature (FEATURE_IBT);
> if (edx & bit_UINTR)
> set_feature (FEATURE_UINTR);
> + if (edx & bit_USER_MSR)
> + set_feature (FEATURE_USER_MSR);
> if (amx_usable)
> {
> if (edx & bit_AMX_TILE)
> diff --git a/gcc/common/config/i386/i386-common.cc
> b/gcc/common/config/i386/i386-common.cc
> index 684b0451bb3..13e423deceb 100644
> --- a/gcc/common/config/i386/i386-common.cc
> +++ b/gcc/common/config/i386/i386-common.cc
> @@ -125,6 +125,7 @@ along with GCC; see the file COPYING3. If not see
> #define OPTION_MASK_ISA2_SM4_SET OPTION_MASK_ISA2_SM4 #define
> OPTION_MASK_ISA2_APX_F_SET OPTION_MASK_ISA2_APX_F #define
> OPTION_MASK_ISA2_EVEX512_SET OPTION_MASK_ISA2_EVEX512
> +#define OPTION_MASK_ISA2_USER_MSR_SET
> OPTION_MASK_ISA2_USER_MSR
>
> /* SSE4 includes both SSE4.1 and SSE4.2. -msse4 should be the same
> as -msse4.2. */
> @@ -313,6 +314,7 @@ along with GCC; see the file COPYING3. If not see
> #define OPTION_MASK_ISA2_SM4_UNSET OPTION_MASK_ISA2_SM4
> #define OPTION_MASK_ISA2_APX_F_UNSET OPTION_MASK_ISA2_APX_F
> #define OPTION_MASK_ISA2_EVEX512_UNSET
> OPTION_MASK_ISA2_EVEX512
> +#define OPTION_MASK_ISA2_USER_MSR_UNSET
> OPTION_MASK_ISA2_USER_MSR
>
> /* SSE4 includes both SSE4.1 and SSE4.2. -mno-sse4 should the same
> as -mno-sse4.1. */
> @@ -1373,6 +1375,19 @@ ix86_handle_option (struct gcc_options *opts,
> }
> return true;
>
> + case OPT_musermsr:
> + if (value)
> + {
> + opts->x_ix86_isa_flags2 |= OPTION_MASK_ISA2_USER_MSR_SET;
> + opts->x_ix86_isa_flags2_explicit |=
> OPTION_MASK_ISA2_USER_MSR_SET;
> + }
> + else
> + {
> + opts->x_ix86_isa_flags2 &=
> ~OPTION_MASK_ISA2_USER_MSR_UNSET;
> + opts->x_ix86_isa_flags2_explicit |=
> OPTION_MASK_ISA2_USER_MSR_UNSET;
> + }
> + return true;
> +
> case OPT_mfma:
> if (value)
> {
> diff --git a/gcc/common/config/i386/i386-cpuinfo.h
> b/gcc/common/config/i386/i386-cpuinfo.h
> index 8bf592191ab..47e9dcfb8f7 100644
> --- a/gcc/common/config/i386/i386-cpuinfo.h
> +++ b/gcc/common/config/i386/i386-cpuinfo.h
> @@ -262,6 +262,7 @@ enum processor_features
> FEATURE_SHA512,
> FEATURE_SM4,
> FEATURE_APX_F,
> + FEATURE_USER_MSR,
> CPU_FEATURE_MAX
> };
>
> diff --git a/gcc/common/config/i386/i386-isas.h
> b/gcc/common/config/i386/i386-isas.h
> index 47e0cbd6f5b..6875924994d 100644
> --- a/gcc/common/config/i386/i386-isas.h
> +++ b/gcc/common/config/i386/i386-isas.h
> @@ -192,4 +192,5 @@ ISA_NAMES_TABLE_START
> ISA_NAMES_TABLE_ENTRY("sha512", FEATURE_SHA512, P_NONE, "-
> msha512")
> ISA_NAMES_TABLE_ENTRY("sm4", FEATURE_SM4, P_NONE, "-msm4")
> ISA_NAMES_TABLE_ENTRY("apxf", FEATURE_APX_F, P_NONE, "-mapxf")
> + ISA_NAMES_TABLE_ENTRY("usermsr", FEATURE_USER_MSR, P_NONE,
> + "-musermsr")
> ISA_NAMES_TABLE_END
> diff --git a/gcc/config.gcc b/gcc/config.gcc index cc37a9c768d..284f3d507ba
> 100644
> --- a/gcc/config.gcc
> +++ b/gcc/config.gcc
> @@ -448,7 +448,8 @@ i[34567]86-*-* | x86_64-*-*)
> avxvnniint8intrin.h avxneconvertintrin.h
> cmpccxaddintrin.h amxfp16intrin.h prfchiintrin.h
> raointintrin.h amxcomplexintrin.h avxvnniint16intrin.h
> - sm3intrin.h sha512intrin.h sm4intrin.h"
> + sm3intrin.h sha512intrin.h sm4intrin.h
> + usermsrintrin.h"
> ;;
> ia64-*-*)
> extra_headers=ia64intrin.h
> diff --git a/gcc/config/i386/cpuid.h b/gcc/config/i386/cpuid.h index
> f3d3a2a1c22..75ef2718204 100644
> --- a/gcc/config/i386/cpuid.h
> +++ b/gcc/config/i386/cpuid.h
> @@ -149,6 +149,7 @@
> #define bit_AVXNECONVERT (1 << 5)
> #define bit_AVXVNNIINT16 (1 << 10)
> #define bit_PREFETCHI (1 << 14)
> +#define bit_USER_MSR (1 << 15)
> #define bit_APX_F (1 << 21)
>
> /* Extended State Enumeration Sub-leaf (%eax == 0xd, %ecx == 1) */ diff --git
> a/gcc/config/i386/i386-builtin-types.def b/gcc/config/i386/i386-builtin-
> types.def
> index e9463120eea..183029f2c75 100644
> --- a/gcc/config/i386/i386-builtin-types.def
> +++ b/gcc/config/i386/i386-builtin-types.def
> @@ -1422,3 +1422,6 @@ DEF_FUNCTION_TYPE (V4SI, V4SI, V4SI, V4SI, INT)
>
> # SHA512 builtins
> DEF_FUNCTION_TYPE (V4DI, V4DI, V4DI, V2DI)
> +
> +# USER_MSR builtins
> +DEF_FUNCTION_TYPE (VOID, UINT64, UINT64)
> diff --git a/gcc/config/i386/i386-builtins.cc
> b/gcc/config/i386/i386-builtins.cc
> index 70538fbe17b..42fc3751676 100644
> --- a/gcc/config/i386/i386-builtins.cc
> +++ b/gcc/config/i386/i386-builtins.cc
> @@ -1262,6 +1262,14 @@ ix86_init_mmx_sse_builtins (void)
> "__builtin_ia32_testui",
> UINT8_FTYPE_VOID, IX86_BUILTIN_TESTUI);
>
> + /* USER_MSR. */
> + def_builtin (OPTION_MASK_ISA_64BIT, OPTION_MASK_ISA2_USER_MSR,
> + "__builtin_ia32_urdmsr", UINT64_FTYPE_UINT64,
> + IX86_BUILTIN_URDMSR);
> + def_builtin (OPTION_MASK_ISA_64BIT, OPTION_MASK_ISA2_USER_MSR,
> + "__builtin_ia32_uwrmsr", VOID_FTYPE_UINT64_UINT64,
> + IX86_BUILTIN_UWRMSR);
> +
> /* CLDEMOTE. */
> def_builtin (0, OPTION_MASK_ISA2_CLDEMOTE, "__builtin_ia32_cldemote",
> VOID_FTYPE_PCVOID, IX86_BUILTIN_CLDEMOTE); diff --git
> a/gcc/config/i386/i386-builtins.h b/gcc/config/i386/i386-builtins.h index
> c632482087c..40785b0aa34 100644
> --- a/gcc/config/i386/i386-builtins.h
> +++ b/gcc/config/i386/i386-builtins.h
> @@ -39,6 +39,8 @@ enum ix86_builtins
> IX86_BUILTIN_MWAIT,
> IX86_BUILTIN_UMONITOR,
> IX86_BUILTIN_UMWAIT,
> + IX86_BUILTIN_URDMSR,
> + IX86_BUILTIN_UWRMSR,
> IX86_BUILTIN_TPAUSE,
> IX86_BUILTIN_TESTUI,
> IX86_BUILTIN_CLZERO,
> diff --git a/gcc/config/i386/i386-c.cc b/gcc/config/i386/i386-c.cc index
> 9c44bd7fb63..042ad8b9d9c 100644
> --- a/gcc/config/i386/i386-c.cc
> +++ b/gcc/config/i386/i386-c.cc
> @@ -712,6 +712,8 @@ ix86_target_macros_internal (HOST_WIDE_INT
> isa_flag,
> def_or_undef (parse_in, "__SM4__");
> if (isa_flag2 & OPTION_MASK_ISA2_EVEX512)
> def_or_undef (parse_in, "__EVEX512__");
> + if (isa_flag2 & OPTION_MASK_ISA2_USER_MSR)
> + def_or_undef (parse_in, "__USER_MSR__");
> if (TARGET_IAMCU)
> {
> def_or_undef (parse_in, "__iamcu"); diff --git a/gcc/config/i386/i386-
> expand.cc b/gcc/config/i386/i386-expand.cc index
> d5083494798..4ef85570d44 100644
> --- a/gcc/config/i386/i386-expand.cc
> +++ b/gcc/config/i386/i386-expand.cc
> @@ -13471,6 +13471,41 @@ ix86_expand_builtin (tree exp, rtx target, rtx
> subtarget,
> return 0;
> }
>
> + case IX86_BUILTIN_URDMSR:
> + case IX86_BUILTIN_UWRMSR:
> + {
> + arg0 = CALL_EXPR_ARG (exp, 0);
> + op0 = expand_normal (arg0);
> +
> + if (CONST_INT_P (op0))
> + {
> + unsigned HOST_WIDE_INT val = UINTVAL (op0);
> + if (val > 0xffffffff)
> + op0 = force_reg (DImode, op0);
> + }
> + else
> + op0 = force_reg (DImode, op0);
> +
> + if (fcode == IX86_BUILTIN_UWRMSR)
> + {
> + arg1 = CALL_EXPR_ARG (exp, 1);
> + op1 = expand_normal (arg1);
> + op1 = force_reg (DImode, op1);
> + icode = CODE_FOR_uwrmsr;
> + target = 0;
> + }
> + else
> + {
> + if (target == 0)
> + target = gen_reg_rtx (DImode);
> + icode = CODE_FOR_urdmsr;
> + op1 = op0;
> + op0 = target;
> + }
> + emit_insn (GEN_FCN (icode) (op0, op1));
> + return target;
> + }
> +
> case IX86_BUILTIN_VEC_INIT_V2SI:
> case IX86_BUILTIN_VEC_INIT_V4HI:
> case IX86_BUILTIN_VEC_INIT_V8QI:
> diff --git a/gcc/config/i386/i386-isa.def b/gcc/config/i386/i386-isa.def index
> c581f343339..991df5e2ef0 100644
> --- a/gcc/config/i386/i386-isa.def
> +++ b/gcc/config/i386/i386-isa.def
> @@ -122,3 +122,4 @@ DEF_PTA(SM3)
> DEF_PTA(SHA512)
> DEF_PTA(SM4)
> DEF_PTA(APX_F)
> +DEF_PTA(USER_MSR)
> diff --git a/gcc/config/i386/i386-options.cc b/gcc/config/i386/i386-
> options.cc index 06af373ca57..9506c470147 100644
> --- a/gcc/config/i386/i386-options.cc
> +++ b/gcc/config/i386/i386-options.cc
> @@ -251,7 +251,8 @@ static struct ix86_target_opts isa2_opts[] =
> { "-msm3", OPTION_MASK_ISA2_SM3 },
> { "-msha512", OPTION_MASK_ISA2_SHA512 },
> { "-msm4", OPTION_MASK_ISA2_SM4 },
> - { "-mevex512", OPTION_MASK_ISA2_EVEX512 }
> + { "-mevex512", OPTION_MASK_ISA2_EVEX512 },
> + { "-musermsr", OPTION_MASK_ISA2_USER_MSR }
> };
> static struct ix86_target_opts isa_opts[] = { @@ -1114,6 +1115,7 @@
> ix86_valid_target_attribute_inner_p (tree fndecl, tree args, char
> *p_strings[],
> IX86_ATTR_ISA ("sm4", OPT_msm4),
> IX86_ATTR_ISA ("apxf", OPT_mapxf),
> IX86_ATTR_ISA ("evex512", OPT_mevex512),
> + IX86_ATTR_ISA ("usermsr", OPT_musermsr),
>
> /* enum options */
> IX86_ATTR_ENUM ("fpmath=", OPT_mfpmath_),
> diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index
> f390fb5692b..b8f60d1df4b 100644
> --- a/gcc/config/i386/i386.md
> +++ b/gcc/config/i386/i386.md
> @@ -340,6 +340,10 @@
>
> ;; For PREFETCHI support
> UNSPECV_PREFETCHI
> +
> + ;; For USER_MSR support
> + UNSPECV_URDMSR
> + UNSPECV_UWRMSR
> ])
>
> ;; Constants to represent rounding modes in the ROUND instruction @@ -
> 26601,6 +26605,26 @@
> DONE;
> })
>
> +(define_insn "urdmsr"
> + [(set (match_operand:DI 0 "register_operand" "=r")
> + (unspec_volatile:DI
> + [(match_operand:DI 1 "x86_64_szext_nonmemory_operand" "reZ")]
> + UNSPECV_URDMSR))]
> + "TARGET_USER_MSR && TARGET_64BIT"
> + "urdmsr\t{%1, %0|%0, %1}"
> + [(set_attr "prefix" "vex")
> + (set_attr "type" "other")])
> +
> +(define_insn "uwrmsr"
> + [(unspec_volatile
> + [(match_operand:DI 0 "x86_64_szext_nonmemory_operand" "reZ")
> + (match_operand:DI 1 "register_operand" "r")]
> + UNSPECV_UWRMSR)]
> + "TARGET_USER_MSR && TARGET_64BIT"
> + "uwrmsr\t{%1, %0|%0, %1}"
> + [(set_attr "prefix" "vex")
> + (set_attr "type" "other")])
> +
> (include "mmx.md")
> (include "sse.md")
> (include "sync.md")
> diff --git a/gcc/config/i386/i386.opt b/gcc/config/i386/i386.opt index
> 05ba7f37244..b8382c48099 100644
> --- a/gcc/config/i386/i386.opt
> +++ b/gcc/config/i386/i386.opt
> @@ -1344,3 +1344,7 @@ hook reg or mem constraint in inline asm to
> GPR16.
> mevex512
> Target Mask(ISA2_EVEX512) Var(ix86_isa_flags2) Save Support 512 bit
> vector built-in functions and code generation.
> +
> +musermsr
> +Target Mask(ISA2_USER_MSR) Var(ix86_isa_flags2) Save Support USER_MSR
> +built-in functions and code generation.
> diff --git a/gcc/config/i386/usermsrintrin.h
> b/gcc/config/i386/usermsrintrin.h new file mode 100644 index
> 00000000000..9e1dbdca112
> --- /dev/null
> +++ b/gcc/config/i386/usermsrintrin.h
> @@ -0,0 +1,60 @@
> +/* Copyright (C) 2022 Free Software Foundation, Inc.
> +
> + This file is part of GCC.
> +
> + GCC is free software; you can redistribute it and/or modify
> + it under the terms of the GNU General Public License as published by
> + the Free Software Foundation; either version 3, or (at your option)
> + any later version.
> +
> + GCC is distributed in the hope that it will be useful,
> + but WITHOUT ANY WARRANTY; without even the implied warranty of
> + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + GNU General Public License for more details.
> +
> + Under Section 7 of GPL version 3, you are granted additional
> + permissions described in the GCC Runtime Library Exception, version
> + 3.1, as published by the Free Software Foundation.
> +
> + You should have received a copy of the GNU General Public License and
> + a copy of the GCC Runtime Library Exception along with this program;
> + see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
> + <http://www.gnu.org/licenses/>. */
> +
> +#if !defined _X86GPRINTRIN_H_INCLUDED
> +#error "Never use <usermsrintrin.h> directly; include <x86gprintrin.h>
> instead."
> +#endif
> +
> +#ifndef _USER_MSRINTRIN_H_INCLUDED
> +#define _USER_MSRINTRIN_H_INCLUDED
> +
> +#ifdef __x86_64__
> +
> +#ifndef __USER_MSR__
> +#pragma GCC push_options
> +#pragma GCC target("usermsr")
> +#define __DISABLE_USER_MSR__
> +#endif /* __USER_MSR__ */
> +
> +extern __inline unsigned long long
> +__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
> +_urdmsr (unsigned long long __A) {
> + return (unsigned long long) __builtin_ia32_urdmsr (__A); }
> +
> +extern __inline void
> +__attribute__ ((__gnu_inline__, __always_inline__, __artificial__))
> +_uwrmsr (unsigned long long __A, unsigned long long __B) {
> + __builtin_ia32_uwrmsr (__A, __B);
> +}
> +
> +#ifdef __DISABLE_USER_MSR__
> +#undef __DISABLE_USER_MSR__
> +#pragma GCC pop_options
> +#endif /* __DISABLE_USER_MSR__ */
> +
> +#endif /* __x86_64__ */
> +
> +#endif /* _USER_MSRINTRIN_H_INCLUDED */
> diff --git a/gcc/config/i386/x86gprintrin.h b/gcc/config/i386/x86gprintrin.h
> index f41be3ffcde..11a8a963020 100644
> --- a/gcc/config/i386/x86gprintrin.h
> +++ b/gcc/config/i386/x86gprintrin.h
> @@ -108,6 +108,8 @@
>
> #include <hresetintrin.h>
>
> +#include <usermsrintrin.h>
> +
> extern __inline void
> __attribute__((__gnu_inline__, __always_inline__, __artificial__)) _wbinvd
> (void) diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index
> b82497f00e4..991c2db8eba 100644
> --- a/gcc/doc/extend.texi
> +++ b/gcc/doc/extend.texi
> @@ -7210,6 +7210,11 @@ Enable/disable the generation of the SHA512
> instructions.
> @itemx no-sm4
> Enable/disable the generation of the SM4 instructions.
>
> +@cindex @code{target("umsr")} function attribute, x86 @item umsr @itemx
> +no-umsr Enable/disable the generation of the UMSR instructions.
> +
> @cindex @code{target("cld")} function attribute, x86 @item cld @itemx no-
> cld diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index
> 7c5f81d9783..3edf41257f1 100644
> --- a/gcc/doc/invoke.texi
> +++ b/gcc/doc/invoke.texi
> @@ -1444,6 +1444,7 @@ See RS/6000 and PowerPC Options.
> -mamx-tile -mamx-int8 -mamx-bf16 -muintr -mhreset -mavxvnni
> -mavx512fp16 -mavxifma -mavxvnniint8 -mavxneconvert -mcmpccxadd -
> mamx-fp16 -mprefetchi -mraoint -mamx-complex -mavxvnniint16 -msm3 -
> msha512 -msm4 -mapxf
> +-mumsr
> -mcldemote -mms-bitfields -mno-align-stringops -minline-all-stringops -
> minline-stringops-dynamically -mstringop-strategy=@var{alg} -mkl -mwidekl
> @@ -33830,6 +33831,9 @@ preferred alignment to @option{-mpreferred-
> stack-boundary=2}.
> @need 200
> @opindex mapxf
> @itemx -mapxf
> +@need 200
> +@opindex mumsr
> +@itemx -mumsr
> These switches enable the use of instructions in the MMX, SSE, AVX512ER,
> AVX512CD, AVX512VL, AVX512BW, AVX512DQ, AVX512IFMA,
> AVX512VBMI, SHA, AES, PCLMUL, CLFLUSHOPT, CLWB, FSGSBASE, PTWRITE,
> RDRND, F16C, FMA, PCONFIG, @@ -33840,7 +33844,7 @@ GFNI, VAES,
> WAITPKG, VPCLMULQDQ, AVX512BITALG, MOVDIRI, MOVDIR64B,
> AVX512BF16, ENQCMD, AVX512VPOPCNTDQ, AVX5124FMAPS,
> AVX512VNNI, AVX5124VNNIW, SERIALIZE, UINTR, HRESET, AMXTILE,
> AMXINT8, AMXBF16, KL, WIDEKL, AVXVNNI, AVX512-FP16, AVXIFMA,
> AVXVNNIINT8, AVXNECONVERT, CMPCCXADD, AMX-FP16, PREFETCHI,
> RAOINT, -AMX-COMPLEX, AVXVNNIINT16, SM3, SHA512, SM4, APX_F or
> CLDEMOTE extended
> +AMX-COMPLEX, AVXVNNIINT16, SM3, SHA512, SM4, APX_F, UMSR or
> CLDEMOTE
> +extended
> instruction sets. Each has a corresponding @option{-mno-} option to disable
> use of these instructions.
>
> diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi index
> 8bf701461ec..a859bcc53cc 100644
> --- a/gcc/doc/sourcebuild.texi
> +++ b/gcc/doc/sourcebuild.texi
> @@ -2624,6 +2624,9 @@ Test environment appears to run executables on a
> simulator that accepts only @code{EM_SPARC} executables and chokes on
> @code{EM_SPARC32PLUS} or @code{EM_SPARCV9} executables.
>
> +@item umsr
> +Target supports the execution of @code{umsr} instructions.
> +
> @item vect_cmdline_needed
> Target requires a command line argument to enable a SIMD instruction set.
>
> diff --git a/gcc/testsuite/gcc.target/i386/funcspec-56.inc
> b/gcc/testsuite/gcc.target/i386/funcspec-56.inc
> index ca558b3e828..e0470a60483 100644
> --- a/gcc/testsuite/gcc.target/i386/funcspec-56.inc
> +++ b/gcc/testsuite/gcc.target/i386/funcspec-56.inc
> @@ -92,6 +92,7 @@ extern void test_avxvnniint16 (void)
> __attribute__((__target__("avxvnniint16"))
> extern void test_sm3 (void)
> __attribute__((__target__("sm3")));
> extern void test_sha512 (void)
> __attribute__((__target__("sha512")));
> extern void test_sm4 (void)
> __attribute__((__target__("sm4")));
> +extern void test_user_msr (void)
> __attribute__((__target__("usermsr")));
>
> extern void test_no_sgx (void)
> __attribute__((__target__("no-sgx")));
> extern void test_no_avx5124fmaps(void)
> __attribute__((__target__("no-avx5124fmaps")));
> @@ -185,6 +186,7 @@ extern void test_no_avxvnniint16 (void)
> __attribute__((__target__("no-avxvnniin
> extern void test_no_sm3 (void)
> __attribute__((__target__("no-sm3")));
> extern void test_no_sha512 (void)
> __attribute__((__target__("no-sha512")));
> extern void test_no_sm4 (void)
> __attribute__((__target__("no-
> sm4")));
> +extern void test_no_user_msr (void)
> __attribute__((__target__("no-usermsr")));
>
> extern void test_arch_nocona (void)
> __attribute__((__target__("arch=nocona")));
> extern void test_arch_core2 (void)
> __attribute__((__target__("arch=core2")));
> diff --git a/gcc/testsuite/gcc.target/i386/user_msr-1.c
> b/gcc/testsuite/gcc.target/i386/user_msr-1.c
> new file mode 100644
> index 00000000000..447852306df
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/user_msr-1.c
> @@ -0,0 +1,20 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-musermsr -O2" } */
> +/* { dg-final { scan-assembler-times "urdmsr\[ \\t\]\\%r\[a-z\]x,
> +\\%r\[a-z\]x" 1 } } */
> +/* { dg-final { scan-assembler-times "urdmsr\[ \\t\]\\\$121" 1 } } */
> +/* { dg-final { scan-assembler-times "uwrmsr\[ \\t\]\\%r\[a-z\]x,
> +\\%r\[a-z\]x" 1 } } */
> +/* { dg-final { scan-assembler-times "uwrmsr\[ \\t\]\\%r\[a-z\]x,
> +\\\$121" 1 } } */
> +
> +#include <x86gprintrin.h>
> +
> +volatile unsigned long long x;
> +volatile unsigned long long y;
> +
> +void extern
> +user_msr_test (void)
> +{
> + x = _urdmsr(y);
> + x = _urdmsr(121);
> + _uwrmsr(y, x);
> + _uwrmsr(121, x);
> +}
> diff --git a/gcc/testsuite/gcc.target/i386/user_msr-2.c
> b/gcc/testsuite/gcc.target/i386/user_msr-2.c
> new file mode 100644
> index 00000000000..ab0e76f9088
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/i386/user_msr-2.c
> @@ -0,0 +1,16 @@
> +/* { dg-do compile { target { ! ia32 } } } */
> +/* { dg-options "-O2 -musermsr" } */
> +/* { dg-final { scan-assembler-times "urdmsr\[ \\t\]\\%r\[a-z\]x,
> +\\%r\[a-z\]x" 1 } } */
> +/* { dg-final { scan-assembler-times "uwrmsr\[ \\t\]\\%r\[a-z\]x,
> +\\%r\[a-z\]x" 1 } } */
> +/* { dg-final { scan-assembler-times "movabsq\[
> +\\t\]\\\$20018842566655, \\%r\[a-z\]x" 1 } } */
> +
> +#include <x86gprintrin.h>
> +
> +volatile unsigned long long x;
> +
> +void extern
> +user_msr_test (void)
> +{
> + x = _urdmsr(0x1234ffffffffULL);
> + _uwrmsr(0x1234ffffffffULL, x);
> +}
> diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-1.c
> b/gcc/testsuite/gcc.target/i386/x86gprintrin-1.c
> index 68da4db4f3c..b9479beef7c 100644
> --- a/gcc/testsuite/gcc.target/i386/x86gprintrin-1.c
> +++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-1.c
> @@ -1,7 +1,7 @@
> /* Test that <x86gprintrin.h> is usable with -O -std=c89 -pedantic-errors.
> */
> /* { dg-do compile } */
> /* { dg-options "-O -std=c89 -pedantic-errors -march=x86-64 -madx -mbmi -
> mbmi2 -mcldemote -mclflushopt -mclwb -mclzero -menqcmd -mfsgsbase -
> mfxsr -mhreset -mlzcnt -mlwp -mmovdiri -mmwaitx -mpconfig -mpopcnt -
> mpku -mptwrite -mrdpid -mrdrnd -mrdseed -mrtm -mserialize -msgx -mshstk
> -mtbm -mtsxldtrk -mwaitpkg -mwbnoinvd -mxsave -mxsavec -mxsaveopt -
> mxsaves -mraoint -mno-sse -mno-mmx" } */
> -/* { dg-additional-options "-mcmpccxadd -mprefetchi -muintr" { target { !
> ia32 } } } */
> +/* { dg-additional-options "-musermsr -mcmpccxadd -mprefetchi -muintr"
> +{ target { ! ia32 } } } */
>
> #include <x86gprintrin.h>
>
> diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-2.c
> b/gcc/testsuite/gcc.target/i386/x86gprintrin-2.c
> index 737c2a26f98..ee167ebab90 100644
> --- a/gcc/testsuite/gcc.target/i386/x86gprintrin-2.c
> +++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-2.c
> @@ -1,7 +1,7 @@
> /* { dg-do compile } */
> /* { dg-options "-O2 -Werror-implicit-function-declaration -march=x86-64 -
> madx -mbmi -mbmi2 -mcldemote -mclflushopt -mclwb -mclzero -menqcmd -
> mfsgsbase -mfxsr -mhreset -mlzcnt -mlwp -mmovdiri -mmwaitx -mpconfig -
> mpopcnt -mpku -mptwrite -mrdpid -mrdrnd -mrdseed -mrtm -mserialize -
> msgx -mshstk -mtbm -mtsxldtrk -mwaitpkg -mwbnoinvd -mxsave -mxsavec -
> mxsaveopt -mxsaves -mraoint -mno-sse -mno-mmx" } */
> /* { dg-add-options bind_pic_locally } */
> -/* { dg-additional-options "-mcmpccxadd -mprefetchi -muintr" { target { !
> ia32 } } } */
> +/* { dg-additional-options "-musermsr -mcmpccxadd -mprefetchi -muintr"
> +{ target { ! ia32 } } } */
>
> /* Test that the intrinsics in <x86gprintrin.h> compile with optimization.
> All of them are defined as inline functions that reference the proper @@ -
> 32,4 +32,8 @@ #define __builtin_ia32_cmpccxadd(A, B, C, D)
> __builtin_ia32_cmpccxadd(A, B, C, 1) #define __builtin_ia32_cmpccxadd64(A,
> B, C, D) __builtin_ia32_cmpccxadd64(A, B, C, 1)
>
> +/* usermsrintrin.h */
> +#define __builtin_ia32_urdmsr(A) __builtin_ia32_urdmsr(1) #define
> +__builtin_ia32_uwrmsr(A, B) __builtin_ia32_uwrmsr(1, B)
> +
> #include <x86gprintrin.h>
> diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-3.c
> b/gcc/testsuite/gcc.target/i386/x86gprintrin-3.c
> index 52690b1dfb5..a87039149f9 100644
> --- a/gcc/testsuite/gcc.target/i386/x86gprintrin-3.c
> +++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-3.c
> @@ -1,7 +1,7 @@
> /* { dg-do compile } */
> /* { dg-options "-O0 -Werror-implicit-function-declaration -march=x86-64 -
> madx -mbmi -mbmi2 -mcldemote -mclflushopt -mclwb -mclzero -menqcmd -
> mfsgsbase -mfxsr -mhreset -mlzcnt -mlwp -mmovdiri -mmwaitx -mpconfig -
> mpopcnt -mpku -mptwrite -mrdpid -mrdrnd -mrdseed -mrtm -mserialize -
> msgx -mshstk -mtbm -mtsxldtrk -mwaitpkg -mwbnoinvd -mxsave -mxsavec -
> mxsaveopt -mxsaves -mraoint -mno-sse -mno-mmx" } */
> /* { dg-add-options bind_pic_locally } */
> -/* { dg-additional-options "-mcmpccxadd -mprefetchi -muintr" { target { !
> ia32 } } } */
> +/* { dg-additional-options "-musermsr -mcmpccxadd -mprefetchi -muintr"
> +{ target { ! ia32 } } } */
>
> /* Test that the intrinsics in <x86gprintrin.h> compile without optimization.
> All of them are defined as inline functions that reference the proper @@ -
> 14,3 +14,29 @@ #define __inline
>
> #include <x86gprintrin.h>
> +
> +#define _CONCAT(x,y) x ## y
> +
> +#define test_0(func, type, imm) \
> + type _CONCAT(_0,func) (int const I) \
> + { return func (imm); }
> +
> +#define test_1(func, type, op1_type) \
> + type _CONCAT(_1,func) (op1_type A) \
> + { return func (A); }
> +
> +#define test_1r(func, type, op1_type, imm) \
> + type _CONCAT(_1r,func) (op1_type A, int const I) \
> + { return func (imm, A); }
> +
> +#define test_2(func, type, op1_type, op2_type) \
> + type _CONCAT(_2,func) (op1_type A, op2_type B) \
> + { return func (A, B); }
> +
> +/* usermsrintrin.h */
> +#ifdef __x86_64__
> +test_0 (_urdmsr, unsigned long long, 1)
> +test_1 (_urdmsr, unsigned long long, unsigned long long) test_1r
> +(_uwrmsr, void, unsigned long long, 1)
> +test_2 (_uwrmsr, void, unsigned long long, unsigned long long) #endif
> diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-4.c
> b/gcc/testsuite/gcc.target/i386/x86gprintrin-4.c
> index 94cfc583dc9..c3c79473020 100644
> --- a/gcc/testsuite/gcc.target/i386/x86gprintrin-4.c
> +++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-4.c
> @@ -13,9 +13,27 @@
> #define extern
> #define __inline
>
> +#define _CONCAT(x,y) x ## y
> +
> +#define test_0(func, type, imm) \
> + type _CONCAT(_0,func) (int const I) \
> + { return func (imm); }
> +
> +#define test_1(func, type, op1_type) \
> + type _CONCAT(_1,func) (op1_type A) \
> + { return func (A); }
> +
> +#define test_1r(func, type, op1_type, imm) \
> + type _CONCAT(_1r,func) (op1_type A, int const I) \
> + { return func (imm, A); }
> +
> +#define test_2(func, type, op1_type, op2_type) \
> + type _CONCAT(_2,func) (op1_type A, op2_type B) \
> + { return func (A, B); }
> +
> #ifndef DIFFERENT_PRAGMAS
> #ifdef __x86_64__
> -#pragma GCC target
> ("adx,bmi,bmi2,cmpccxadd,fsgsbase,fxsr,hreset,lwp,lzcnt,popcnt,prefetchi,ra
> oint,rdrnd,rdseed,tbm,rtm,serialize,tsxldtrk,uintr,xsaveopt")
> +#pragma GCC target
> +("adx,bmi,bmi2,cmpccxadd,fsgsbase,fxsr,hreset,lwp,lzcnt,popcnt,prefetch
> +i,raoint,rdrnd,rdseed,tbm,rtm,serialize,tsxldtrk,uintr,usermsr,xsaveopt
> +")
> #else
> #pragma GCC target
> ("adx,bmi,bmi2,fsgsbase,fxsr,hreset,lwp,lzcnt,popcnt,raoint,rdrnd,rdseed,tb
> m,rtm,serialize,tsxldtrk,xsaveopt")
> #endif
> @@ -29,6 +47,18 @@
>
> /* x86intrin.h (LWP/BMI/BMI2/TBM/LZCNT). */ #ifdef DIFFERENT_PRAGMAS
> +#ifdef __x86_64__
> +#pragma GCC target ("lwp,bmi,bmi2,tbm,lzcnt,usermsr")
> +#else
> #pragma GCC target ("lwp,bmi,bmi2,tbm,lzcnt") #endif
> +#endif
> #include <x86gprintrin.h>
> +
> +/* usermsrintrin.h */
> +#ifdef __x86_64__
> +test_0 (_urdmsr, unsigned long long, 1)
> +test_1 (_urdmsr, unsigned long long, unsigned long long) test_1r
> +(_uwrmsr, void, unsigned long long, 1)
> +test_2 (_uwrmsr, void, unsigned long long, unsigned long long) #endif
> diff --git a/gcc/testsuite/gcc.target/i386/x86gprintrin-5.c
> b/gcc/testsuite/gcc.target/i386/x86gprintrin-5.c
> index 95f3e0a003c..ef126ea76c2 100644
> --- a/gcc/testsuite/gcc.target/i386/x86gprintrin-5.c
> +++ b/gcc/testsuite/gcc.target/i386/x86gprintrin-5.c
> @@ -31,8 +31,12 @@
> #define __builtin_ia32_cmpccxadd(A, B, C, D) __builtin_ia32_cmpccxadd(A, B,
> C, 1) #define __builtin_ia32_cmpccxadd64(A, B, C, D)
> __builtin_ia32_cmpccxadd64(A, B, C, 1)
>
> +/* usermsrintrin.h */
> +#define __builtin_ia32_urdmsr(A) __builtin_ia32_urdmsr(1) #define
> +__builtin_ia32_uwrmsr(A, B) __builtin_ia32_uwrmsr(1, B)
> +
> #ifdef __x86_64__
> -#pragma GCC target
> ("adx,bmi,bmi2,clflushopt,clwb,clzero,cmpccxadd,enqcmd,fsgsbase,fxsr,hrese
> t,lwp,lzcnt,mwaitx,pconfig,pku,popcnt,prefetchi,raoint,rdpid,rdrnd,rdseed,tb
> m,rtm,serialize,sgx,tsxldtrk,uintr,xsavec,xsaveopt,xsaves,wbnoinvd")
> +#pragma GCC target
> +("adx,bmi,bmi2,clflushopt,clwb,clzero,cmpccxadd,enqcmd,fsgsbase,fxsr,hr
> +eset,lwp,lzcnt,mwaitx,pconfig,pku,popcnt,prefetchi,raoint,rdpid,rdrnd,r
> +dseed,tbm,rtm,serialize,sgx,tsxldtrk,uintr,usermsr,xsavec,xsaveopt,xsav
> +es,wbnoinvd")
> #else
> #pragma GCC target
> ("adx,bmi,bmi2,clflushopt,clwb,clzero,enqcmd,fsgsbase,fxsr,hreset,lwp,lzcnt,
> mwaitx,pconfig,pku,popcnt,raoint,rdpid,rdrnd,rdseed,tbm,rtm,serialize,sgx,ts
> xldtrk,xsavec,xsaveopt,xsaves,wbnoinvd")
> #endif
> --
> 2.31.1
