Commit 95207db8 authored by Masahiro Yamada's avatar Masahiro Yamada Committed by Linus Torvalds
Browse files

Remove Intel compiler support 

include/linux/compiler-intel.h had no update in the past 3 years.

We often forget about the third C compiler to build the kernel.

For example, commit a0a12c3e ("asm goto: eradicate CC_HAS_ASM_GOTO")
only mentioned GCC and Clang.

init/Kconfig defines CC_IS_GCC and CC_IS_CLANG but not CC_IS_ICC,
and nobody has reported any issue.

I guess the Intel Compiler support is broken, and nobody is caring
about it.

Harald Arnesen pointed out ICC (classic Intel C/C++ compiler) is
deprecated:

    $ icc -v
    icc: remark #10441: The Intel(R) C++ Compiler Classic (ICC) is
    deprecated and will be removed from product release in the second half
    of 2023. The Intel(R) oneAPI DPC++/C++ Compiler (ICX) is the recommended
    compiler moving forward. Please transition to use this compiler. Use
    '-diag-disable=10441' to disable this message.
    icc version 2021.7.0 (gcc version 12.1.0 compatibility)

Arnd Bergmann provided a link to the article, "Intel C/C++ compilers
complete adoption of LLVM".

lib/zstd/common/compiler.h and lib/zstd/compress/zstd_fast.c were kept
untouched for better sync with https://github.com/facebook/zstd

Link: https://www.intel.com/content/www/us/en/developer/articles/technical/adoption-of-llvm-complete-icx.html


Signed-off-by: default avatarMasahiro Yamada <masahiroy@kernel.org>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Reviewed-by: default avatarNick Desaulniers <ndesaulniers@google.com>
Reviewed-by: default avatarNathan Chancellor <nathan@kernel.org>
Reviewed-by: default avatarMiguel Ojeda <ojeda@kernel.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent b01fe98d

arch/ia64/include/uapi/asm/cmpxchg.h

+1 −5
Original line number Diff line number Diff line
@@ -15,11 +15,7 @@ 
#include <linux/types.h>

/* include compiler specific intrinsics */

#include <asm/ia64regs.h>

#ifdef __INTEL_COMPILER

# include <asm/intel_intrin.h>

#else

#include <asm/gcc_intrin.h>

#endif



/*

 * This function doesn't exist, so you'll get a linker error if

arch/ia64/include/uapi/asm/intel_intrin.h

deleted100644 → 0
+0 −162
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */

#ifndef _ASM_IA64_INTEL_INTRIN_H

#define _ASM_IA64_INTEL_INTRIN_H

/*

 * Intel Compiler Intrinsics

 *

 * Copyright (C) 2002,2003 Jun Nakajima <jun.nakajima@intel.com>

 * Copyright (C) 2002,2003 Suresh Siddha <suresh.b.siddha@intel.com>

 * Copyright (C) 2005,2006 Hongjiu Lu <hongjiu.lu@intel.com>

 *

 */

#include <ia64intrin.h>



#define ia64_barrier()		__memory_barrier()



#define ia64_stop()	/* Nothing: As of now stop bit is generated for each

		 	 * intrinsic

		 	 */



#define ia64_getreg		__getReg

#define ia64_setreg		__setReg



#define ia64_hint		__hint

#define ia64_hint_pause		__hint_pause



#define ia64_mux1_brcst		_m64_mux1_brcst

#define ia64_mux1_mix		_m64_mux1_mix

#define ia64_mux1_shuf		_m64_mux1_shuf

#define ia64_mux1_alt		_m64_mux1_alt

#define ia64_mux1_rev		_m64_mux1_rev



#define ia64_mux1(x,v)		_m_to_int64(_m64_mux1(_m_from_int64(x), (v)))

#define ia64_popcnt		_m64_popcnt

#define ia64_getf_exp		__getf_exp

#define ia64_shrp		_m64_shrp



#define ia64_tpa		__tpa

#define ia64_invala		__invala

#define ia64_invala_gr		__invala_gr

#define ia64_invala_fr		__invala_fr

#define ia64_nop		__nop

#define ia64_sum		__sum

#define ia64_ssm		__ssm

#define ia64_rum		__rum

#define ia64_rsm		__rsm

#define ia64_fc			__fc



#define ia64_ldfs		__ldfs

#define ia64_ldfd		__ldfd

#define ia64_ldfe		__ldfe

#define ia64_ldf8		__ldf8

#define ia64_ldf_fill		__ldf_fill



#define ia64_stfs		__stfs

#define ia64_stfd		__stfd

#define ia64_stfe		__stfe

#define ia64_stf8		__stf8

#define ia64_stf_spill		__stf_spill



#define ia64_mf			__mf

#define ia64_mfa		__mfa



#define ia64_fetchadd4_acq	__fetchadd4_acq

#define ia64_fetchadd4_rel	__fetchadd4_rel

#define ia64_fetchadd8_acq	__fetchadd8_acq

#define ia64_fetchadd8_rel	__fetchadd8_rel



#define ia64_xchg1		_InterlockedExchange8

#define ia64_xchg2		_InterlockedExchange16

#define ia64_xchg4		_InterlockedExchange

#define ia64_xchg8		_InterlockedExchange64



#define ia64_cmpxchg1_rel	_InterlockedCompareExchange8_rel

#define ia64_cmpxchg1_acq	_InterlockedCompareExchange8_acq

#define ia64_cmpxchg2_rel	_InterlockedCompareExchange16_rel

#define ia64_cmpxchg2_acq	_InterlockedCompareExchange16_acq

#define ia64_cmpxchg4_rel	_InterlockedCompareExchange_rel

#define ia64_cmpxchg4_acq	_InterlockedCompareExchange_acq

#define ia64_cmpxchg8_rel	_InterlockedCompareExchange64_rel

#define ia64_cmpxchg8_acq	_InterlockedCompareExchange64_acq



#define __ia64_set_dbr(index, val)	\

		__setIndReg(_IA64_REG_INDR_DBR, index, val)

#define ia64_set_ibr(index, val)	\

		__setIndReg(_IA64_REG_INDR_IBR, index, val)

#define ia64_set_pkr(index, val)	\

		__setIndReg(_IA64_REG_INDR_PKR, index, val)

#define ia64_set_pmc(index, val)	\

		__setIndReg(_IA64_REG_INDR_PMC, index, val)

#define ia64_set_pmd(index, val)	\

		__setIndReg(_IA64_REG_INDR_PMD, index, val)

#define ia64_set_rr(index, val)		\

		__setIndReg(_IA64_REG_INDR_RR, index, val)



#define ia64_get_cpuid(index)	\

		__getIndReg(_IA64_REG_INDR_CPUID, index)

#define __ia64_get_dbr(index)		__getIndReg(_IA64_REG_INDR_DBR, index)

#define ia64_get_ibr(index)		__getIndReg(_IA64_REG_INDR_IBR, index)

#define ia64_get_pkr(index)		__getIndReg(_IA64_REG_INDR_PKR, index)

#define ia64_get_pmc(index)		__getIndReg(_IA64_REG_INDR_PMC, index)

#define ia64_get_pmd(index)		__getIndReg(_IA64_REG_INDR_PMD, index)

#define ia64_get_rr(index)		__getIndReg(_IA64_REG_INDR_RR, index)



#define ia64_srlz_d		__dsrlz

#define ia64_srlz_i		__isrlz



#define ia64_dv_serialize_data()

#define ia64_dv_serialize_instruction()



#define ia64_st1_rel		__st1_rel

#define ia64_st2_rel		__st2_rel

#define ia64_st4_rel		__st4_rel

#define ia64_st8_rel		__st8_rel



/* FIXME: need st4.rel.nta intrinsic */

#define ia64_st4_rel_nta	__st4_rel



#define ia64_ld1_acq		__ld1_acq

#define ia64_ld2_acq		__ld2_acq

#define ia64_ld4_acq		__ld4_acq

#define ia64_ld8_acq		__ld8_acq



#define ia64_sync_i		__synci

#define ia64_thash		__thash

#define ia64_ttag		__ttag

#define ia64_itcd		__itcd

#define ia64_itci		__itci

#define ia64_itrd		__itrd

#define ia64_itri		__itri

#define ia64_ptce		__ptce

#define ia64_ptcl		__ptcl

#define ia64_ptcg		__ptcg

#define ia64_ptcga		__ptcga

#define ia64_ptri		__ptri

#define ia64_ptrd		__ptrd

#define ia64_dep_mi		_m64_dep_mi



/* Values for lfhint in __lfetch and __lfetch_fault */



#define ia64_lfhint_none	__lfhint_none

#define ia64_lfhint_nt1		__lfhint_nt1

#define ia64_lfhint_nt2		__lfhint_nt2

#define ia64_lfhint_nta		__lfhint_nta



#define ia64_lfetch		__lfetch

#define ia64_lfetch_excl	__lfetch_excl

#define ia64_lfetch_fault	__lfetch_fault

#define ia64_lfetch_fault_excl	__lfetch_fault_excl



#define ia64_intrin_local_irq_restore(x)		\

do {							\

	if ((x) != 0) {					\

		ia64_ssm(IA64_PSR_I);			\

		ia64_srlz_d();				\

	} else {					\

		ia64_rsm(IA64_PSR_I);			\

	}						\

} while (0)



#define __builtin_trap()	__break(0);



#endif /* _ASM_IA64_INTEL_INTRIN_H */

arch/ia64/include/uapi/asm/intrinsics.h

+1 −5
Original line number Diff line number Diff line
@@ -14,11 +14,7 @@ 
#include <linux/types.h>

/* include compiler specific intrinsics */

#include <asm/ia64regs.h>

#ifdef __INTEL_COMPILER

# include <asm/intel_intrin.h>

#else

#include <asm/gcc_intrin.h>

#endif

#include <asm/cmpxchg.h>



#define ia64_set_rr0_to_rr4(val0, val1, val2, val3, val4)		\

include/acpi/platform/acenv.h

+1 −4
Original line number Diff line number Diff line
@@ -148,15 +148,12 @@ 
 *

 *****************************************************************************/



#if defined(__GNUC__) && !defined(__INTEL_COMPILER)

#if defined(__GNUC__)

#include <acpi/platform/acgcc.h>



#elif defined(_MSC_VER)

#include "acmsvc.h"



#elif defined(__INTEL_COMPILER)

#include <acpi/platform/acintel.h>



#endif



#if defined(_LINUX) || defined(__linux__)

include/acpi/platform/acenvex.h

+1 −1
Original line number Diff line number Diff line
@@ -35,7 +35,7 @@ 


#endif



#if defined(__GNUC__) && !defined(__INTEL_COMPILER)

#if defined(__GNUC__)

#include "acgccex.h"



#elif defined(_MSC_VER)