[arm][1/3] Add -march=armv8.4-a option
This patch adds support for the Armv8.4-A architecture [1] in the arm backend. This is done through the new -march=armv8.4-a option. With this patch armv8.4-a is recognised as an argument and supports the extensions: simd, fp16, crypto, nocrypto, nofp with the familiar meaning of these options. Worth noting that there is no dotprod option like in armv8.2-a and armv8.3-a because Dot Product support is mandatory in Armv8.4-A when simd is available, so when using +simd (of fp16 which enables +simd), the +dotprod is implied. The various multilib selection makefile fragments are updated too and the mutlilib.exp test gets a few armv8.4-a combination tests. Bootstrapped and tested on arm-none-linux-gnueabihf. From-SVN: r256537
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Kyrylo Tkachov
Kyrylo Tkachov
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99eeb64cc4
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946c6c4512
@ -1,3 +1,15 @@
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2017-01-11 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
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* config/arm/arm-cpus.in (armv8_4): New feature.
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(ARMv8_4a): New fgroup.
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(armv8.4-a): New arch.
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* config/arm/arm-tables.opt: Regenerate.
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* config/arm/t-aprofile: Add matching rules for -march=armv8.4-a.
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* config/arm/t-arm-elf (all_v8_archs): Add armv8.4-a.
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* config/arm/t-multilib (v8_4_a_simd_variants): New variable.
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Add matching rules for -march=armv8.4-a and extensions.
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* doc/invoke.texi (ARM Options): Document -march=armv8.4-a.
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2018-01-11 Oleg Endo <olegendo@gcc.gnu.org>
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PR target/81821
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@ -120,6 +120,9 @@ define feature armv8_2
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# Architecture rel 8.3.
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define feature armv8_3
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# Architecture rel 8.4.
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define feature armv8_4
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# M-Profile security extensions.
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define feature cmse
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@ -242,6 +245,7 @@ define fgroup ARMv8a ARMv7ve armv8
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define fgroup ARMv8_1a ARMv8a crc32 armv8_1
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define fgroup ARMv8_2a ARMv8_1a armv8_2
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define fgroup ARMv8_3a ARMv8_2a armv8_3
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define fgroup ARMv8_4a ARMv8_3a armv8_4
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define fgroup ARMv8m_base ARMv6m armv8 cmse tdiv
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define fgroup ARMv8m_main ARMv7m armv8 cmse
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define fgroup ARMv8r ARMv8a
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@ -597,6 +601,19 @@ begin arch armv8.3-a
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option dotprod add FP_ARMv8 DOTPROD
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end arch armv8.3-a
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begin arch armv8.4-a
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tune for cortex-a53
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tune flags CO_PROC
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base 8A
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profile A
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isa ARMv8_4a
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option simd add FP_ARMv8 DOTPROD
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option fp16 add fp16 FP_ARMv8 DOTPROD
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option crypto add FP_ARMv8 CRYPTO DOTPROD
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option nocrypto remove ALL_CRYPTO
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option nofp remove ALL_FP
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end arch armv8.4-a
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begin arch armv8-m.base
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tune for cortex-m23
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base 8M_BASE
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@ -455,19 +455,22 @@ EnumValue
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Enum(arm_arch) String(armv8.3-a) Value(29)
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EnumValue
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Enum(arm_arch) String(armv8-m.base) Value(30)
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Enum(arm_arch) String(armv8.4-a) Value(30)
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EnumValue
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Enum(arm_arch) String(armv8-m.main) Value(31)
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Enum(arm_arch) String(armv8-m.base) Value(31)
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EnumValue
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Enum(arm_arch) String(armv8-r) Value(32)
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Enum(arm_arch) String(armv8-m.main) Value(32)
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EnumValue
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Enum(arm_arch) String(iwmmxt) Value(33)
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Enum(arm_arch) String(armv8-r) Value(33)
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EnumValue
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Enum(arm_arch) String(iwmmxt2) Value(34)
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Enum(arm_arch) String(iwmmxt) Value(34)
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EnumValue
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Enum(arm_arch) String(iwmmxt2) Value(35)
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Enum
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Name(arm_fpu) Type(enum fpu_type)
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@ -96,6 +96,13 @@ MULTILIB_MATCHES += $(foreach ARCH, $(v8_2_a_simd_variants), \
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march?armv8-a+simd=march?armv8.2-a$(ARCH) \
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march?armv8-a+simd=march?armv8.3-a$(ARCH))
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# Baseline v8.4-a: map down to baseline v8-a
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MULTILIB_MATCHES += march?armv8-a=march?armv8.4-a
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# Map all v8.4-a SIMD variants to v8-a+simd
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MULTILIB_MATCHES += $(foreach ARCH, $(v8_4_a_simd_variants), \
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march?armv8-a+simd=march?armv8.4-a$(ARCH))
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# Use Thumb libraries for everything.
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MULTILIB_REUSE += mthumb/march.armv7-a/mfloat-abi.soft=marm/march.armv7-a/mfloat-abi.soft
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@ -46,7 +46,7 @@ all_early_arch := armv5e armv5tej armv6 armv6j armv6k armv6z armv6kz \
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all_v7_a_r := armv7-a armv7ve armv7-r
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all_v8_archs := armv8-a armv8-a+crc armv8.1-a armv8.2-a armv8.3-a
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all_v8_archs := armv8-a armv8-a+crc armv8.1-a armv8.2-a armv8.3-a armv8.4-a
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# No floating point variants, require thumb1 softfp
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all_nofp_t := armv6-m armv6s-m armv8-m.base
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@ -69,7 +69,7 @@ v8_a_nosimd_variants := +crc
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v8_a_simd_variants := $(call all_feat_combs, simd crypto)
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v8_1_a_simd_variants := $(call all_feat_combs, simd crypto)
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v8_2_a_simd_variants := $(call all_feat_combs, simd fp16 crypto dotprod)
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v8_4_a_simd_variants := $(call all_feat_combs, simd fp16 crypto)
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ifneq (,$(HAS_APROFILE))
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include $(srcdir)/config/arm/t-aprofile
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@ -147,6 +147,13 @@ MULTILIB_MATCHES += $(foreach ARCH, $(v8_2_a_simd_variants), \
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march?armv7+fp=march?armv8.2-a$(ARCH) \
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march?armv7+fp=march?armv8.3-a$(ARCH))
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# Baseline v8.4-a: map down to baseline v8-a
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MULTILIB_MATCHES += march?armv7=march?armv8.4-a
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# Map all v8.4-a SIMD variants
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MULTILIB_MATCHES += $(foreach ARCH, $(v8_4_a_simd_variants), \
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march?armv7+fp=march?armv8.4-a$(ARCH))
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# Use Thumb libraries for everything.
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MULTILIB_REUSE += mthumb/march.armv7/mfloat-abi.soft=marm/march.armv7/mfloat-abi.soft
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@ -15676,6 +15676,7 @@ Permissible names are:
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@samp{armv6z}, @samp{armv6zk},
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@samp{armv7}, @samp{armv7-a}, @samp{armv7ve},
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@samp{armv8-a}, @samp{armv8.1-a}, @samp{armv8.2-a}, @samp{armv8.3-a},
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@samp{armv8.4-a},
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@samp{armv7-r},
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@samp{armv8-r},
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@samp{armv6-m}, @samp{armv6s-m},
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@ -15897,6 +15898,28 @@ Disable the cryptographic extension.
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Disable the floating-point, Advanced SIMD and cryptographic instructions.
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@end table
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@item armv8.4-a
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@table @samp
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@item +fp16
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The half-precision floating-point data processing instructions.
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This also enables the Advanced SIMD and floating-point instructions as well
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as the Dot Product extension.
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@item +simd
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The ARMv8.3-A Advanced SIMD and floating-point instructions as well as the
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Dot Product extension.
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@item +crypto
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The cryptographic instructions. This also enables the Advanced SIMD and
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floating-point instructions as well as the Dot Product extension.
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@item +nocrypto
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Disable the cryptographic extension.
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@item +nofp
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Disable the floating-point, Advanced SIMD and cryptographic instructions.
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@end table
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@item armv7-r
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@table @samp
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@item +fp.sp
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@ -1,3 +1,8 @@
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2017-01-11 Kyrylo Tkachov <kyrylo.tkachov@arm.com>
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* gcc.target/arm/multilib.exp: Add some -march=armv8.4-a
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combination tests.
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2018-01-11 Richard Biener <rguenther@suse.de>
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PR tree-optimization/83435
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@ -92,6 +92,14 @@ if {[multilib_config "aprofile"] } {
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{-march=armv8.3-a+simd+dotprod -mfloat-abi=softfp} "thumb/v8-a+simd/softfp"
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{-march=armv8.3-a+simd+dotprod+nofp -mfloat-abi=softfp} "thumb/v8-a/nofp"
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{-march=armv8.3-a+simd+nofp+dotprod -mfloat-abi=softfp} "thumb/v8-a+simd/softfp"
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{-march=armv8.4-a+crypto -mfloat-abi=soft} "thumb/v8-a/nofp"
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{-march=armv8.4-a+simd+crypto -mfloat-abi=softfp} "thumb/v8-a+simd/softfp"
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{-march=armv8.4-a+simd+crypto+nofp -mfloat-abi=softfp} "thumb/v8-a/nofp"
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{-march=armv8.4-a+simd+nofp+crypto -mfloat-abi=softfp} "thumb/v8-a+simd/softfp"
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{-march=armv8.4-a+fp16 -mfloat-abi=soft} "thumb/v8-a/nofp"
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{-march=armv8.4-a+simd+fp16 -mfloat-abi=softfp} "thumb/v8-a+simd/softfp"
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{-march=armv8.4-a+simd+fp16+nofp -mfloat-abi=softfp} "thumb/v8-a/nofp"
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{-march=armv8.4-a+simd+nofp+fp16 -mfloat-abi=softfp} "thumb/v8-a+simd/softfp"
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{-mcpu=cortex-a53+crypto -mfloat-abi=hard} "thumb/v8-a+simd/hard"
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{-mcpu=cortex-a53+nofp -mfloat-abi=softfp} "thumb/v8-a/nofp"
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{-march=armv8-a+crc -mfloat-abi=hard -mfpu=vfp} "thumb/v8-a+simd/hard"
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