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Remove Intel compiler support

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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 a0a12c3ed0 ("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: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Masahiro Yamada 2022-10-17 03:23:49 +09:00 committed by Linus Torvalds
parent b01fe98d34
commit 95207db816
11 changed files with 5 additions and 287 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/ia64/include/uapi/asm/cmpxchg.h
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@ -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

162
arch/ia64/include/uapi/asm/intel_intrin.h
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@ -1,162 +0,0 @@
/* 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 */

4
arch/ia64/include/uapi/asm/intrinsics.h
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@ -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) \

5
include/acpi/platform/acenv.h
View File

@ -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__)

2
include/acpi/platform/acenvex.h
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@ -35,7 +35,7 @@
#endif
#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
#if defined(__GNUC__)
#include "acgccex.h"
#elif defined(_MSC_VER)

55
include/acpi/platform/acintel.h
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@ -1,55 +0,0 @@
/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
/******************************************************************************
*
* Name: acintel.h - VC specific defines, etc.
*
* Copyright (C) 2000 - 2022, Intel Corp.
*
*****************************************************************************/
#ifndef __ACINTEL_H__
#define __ACINTEL_H__
/*
* Use compiler specific <stdarg.h> is a good practice for even when
* -nostdinc is specified (i.e., ACPI_USE_STANDARD_HEADERS undefined.
*/
#ifndef va_arg
#include <stdarg.h>
#endif
/* Configuration specific to Intel 64-bit C compiler */
#define COMPILER_DEPENDENT_INT64 __int64
#define COMPILER_DEPENDENT_UINT64 unsigned __int64
#define ACPI_INLINE __inline
/*
* Calling conventions:
*
* ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
* ACPI_EXTERNAL_XFACE - External ACPI interfaces
* ACPI_INTERNAL_XFACE - Internal ACPI interfaces
* ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
*/
#define ACPI_SYSTEM_XFACE
#define ACPI_EXTERNAL_XFACE
#define ACPI_INTERNAL_XFACE
#define ACPI_INTERNAL_VAR_XFACE
/* remark 981 - operands evaluated in no particular order */
#pragma warning(disable:981)
/* warn C4100: unreferenced formal parameter */
#pragma warning(disable:4100)
/* warn C4127: conditional expression is constant */
#pragma warning(disable:4127)
/* warn C4706: assignment within conditional expression */
#pragma warning(disable:4706)
/* warn C4214: bit field types other than int */
#pragma warning(disable:4214)
#endif /* __ACINTEL_H__ */

34
include/linux/compiler-intel.h
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@ -1,34 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_COMPILER_TYPES_H
#error "Please don't include <linux/compiler-intel.h> directly, include <linux/compiler.h> instead."
#endif
#ifdef __ECC
/* Compiler specific definitions for Intel ECC compiler */
#include <asm/intrinsics.h>
/* Intel ECC compiler doesn't support gcc specific asm stmts.
* It uses intrinsics to do the equivalent things.
*/
#define barrier() __memory_barrier()
#define barrier_data(ptr) barrier()
#define RELOC_HIDE(ptr, off) \
({ unsigned long __ptr; \
__ptr = (unsigned long) (ptr); \
(typeof(ptr)) (__ptr + (off)); })
/* This should act as an optimization barrier on var.
* Given that this compiler does not have inline assembly, a compiler barrier
* is the best we can do.
*/
#define OPTIMIZER_HIDE_VAR(var) barrier()
#endif
/* icc has this, but it's called _bswap16 */
#define __HAVE_BUILTIN_BSWAP16__
#define __builtin_bswap16 _bswap16

12
include/linux/compiler_attributes.h
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@ -64,16 +64,10 @@
* compiler should see some alignment anyway, when the return value is
* massaged by 'flags = ptr & 3; ptr &= ~3;').
*
* Optional: not supported by icc
*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-assume_005faligned-function-attribute
* clang: https://clang.llvm.org/docs/AttributeReference.html#assume-aligned
*/
#if __has_attribute(__assume_aligned__)
#define __assume_aligned(a, ...) __attribute__((__assume_aligned__(a, ## __VA_ARGS__)))
#else
# define __assume_aligned(a, ...)
#endif
/*
* Note the long name.
@ -85,7 +79,6 @@
/*
* Optional: only supported since gcc >= 9
* Optional: not supported by clang
* Optional: not supported by icc
*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-copy-function-attribute
*/
@ -98,7 +91,6 @@
/*
* Optional: not supported by gcc
* Optional: only supported since clang >= 14.0
* Optional: not supported by icc
*
* clang: https://clang.llvm.org/docs/AttributeReference.html#diagnose_as_builtin
*/
@ -122,7 +114,6 @@
/*
* Optional: not supported by clang
* Optional: not supported by icc
*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Type-Attributes.html#index-designated_005finit-type-attribute
*/
@ -236,7 +227,6 @@
/*
* Optional: only supported since gcc >= 8
* Optional: not supported by clang
* Optional: not supported by icc
*
* gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Variable-Attributes.html#index-nonstring-variable-attribute
*/
@ -267,7 +257,6 @@
/*
* Optional: not supported by gcc.
* Optional: not supported by icc.
*
* clang: https://clang.llvm.org/docs/AttributeReference.html#overloadable
*/
@ -287,7 +276,6 @@
* Note: the "type" argument should match any __builtin_object_size(p, type) usage.
*
* Optional: not supported by gcc.
* Optional: not supported by icc.
*
* clang: https://clang.llvm.org/docs/AttributeReference.html#pass-object-size-pass-dynamic-object-size
*/

2
include/linux/compiler_types.h
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@ -120,8 +120,6 @@ static inline void __chk_io_ptr(const volatile void __iomem *ptr) { }
/* Compiler specific macros. */
#ifdef __clang__
#include <linux/compiler-clang.h>
#elif defined(__INTEL_COMPILER)
#include <linux/compiler-intel.h>
#elif defined(__GNUC__)
/* The above compilers also define __GNUC__, so order is important here. */
#include <linux/compiler-gcc.h>

2
scripts/cc-version.sh
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@ -12,8 +12,6 @@ get_c_compiler_info()
cat <<- EOF | "$@" -E -P -x c - 2>/dev/null
#if defined(__clang__)
Clang __clang_major__ __clang_minor__ __clang_patchlevel__
#elif defined(__INTEL_COMPILER)
ICC __INTEL_COMPILER __INTEL_COMPILER_UPDATE
#elif defined(__GNUC__)
GCC __GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__
#else

4
scripts/min-tool-version.sh
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@ -19,10 +19,6 @@ binutils)
gcc)
echo 5.1.0
;;
icc)
# temporary
echo 16.0.3
;;
llvm)
if [ "$SRCARCH" = s390 ]; then
echo 15.0.0