-# Copyright (C) 2012-2016 Free Software Foundation, Inc.
+# Copyright (C) 2012-2022 Free Software Foundation, Inc.
#
# This file is part of GCC.
#
# have their default values during the configure step. We enforce
# this during the top-level configury.
-MULTILIB_OPTIONS =
-MULTILIB_DIRNAMES =
-MULTILIB_EXCEPTIONS =
-MULTILIB_MATCHES =
-MULTILIB_REUSE =
-
-# We have the following hierachy:
-# ISA: A32 (.) or T32 (thumb)
-# Architecture: ARMv7-A (v7-a), ARMv7VE (v7ve), or ARMv8-A (v8-a).
-# FPU: VFPv3-D16 (fpv3), NEONv1 (simdv1), VFPv4-D16 (fpv4),
-# NEON-VFPV4 (simdvfpv4), NEON for ARMv8 (simdv8), or None (.).
-# Float-abi: Soft (.), softfp (softfp), or hard (hardfp).
-
-MULTILIB_OPTIONS += mthumb
-MULTILIB_DIRNAMES += thumb
-
-MULTILIB_OPTIONS += march=armv7-a/march=armv7ve/march=armv8-a
-MULTILIB_DIRNAMES += v7-a v7ve v8-a
-
-MULTILIB_OPTIONS += mfpu=vfpv3-d16/mfpu=neon/mfpu=vfpv4-d16/mfpu=neon-vfpv4/mfpu=neon-fp-armv8
-MULTILIB_DIRNAMES += fpv3 simdv1 fpv4 simdvfpv4 simdv8
-
-MULTILIB_OPTIONS += mfloat-abi=softfp/mfloat-abi=hard
-MULTILIB_DIRNAMES += softfp hard
-
-
-# Option combinations to build library with
-
-# Default CPU/Arch (ARM is implicitly included because it uses the default
-# multilib)
-MULTILIB_REQUIRED += mthumb
-
-# ARMv7-A
-MULTILIB_REQUIRED += *march=armv7-a
-MULTILIB_REQUIRED += *march=armv7-a/mfpu=vfpv3-d16/mfloat-abi=*
-MULTILIB_REQUIRED += *march=armv7-a/mfpu=neon/mfloat-abi=*
-
-# ARMv7VE
-MULTILIB_REQUIRED += *march=armv7ve
-MULTILIB_REQUIRED += *march=armv7ve/mfpu=vfpv4-d16/mfloat-abi=*
-MULTILIB_REQUIRED += *march=armv7ve/mfpu=neon-vfpv4/mfloat-abi=*
-
-# ARMv8-A
-MULTILIB_REQUIRED += *march=armv8-a
-MULTILIB_REQUIRED += *march=armv8-a/mfpu=neon-fp-armv8/mfloat-abi=*
-
-
-# CPU Matches
-MULTILIB_MATCHES += march?armv7-a=mcpu?cortex-a8
-MULTILIB_MATCHES += march?armv7-a=mcpu?cortex-a9
-MULTILIB_MATCHES += march?armv7-a=mcpu?cortex-a5
-MULTILIB_MATCHES += march?armv7ve=mcpu?cortex-a7
-MULTILIB_MATCHES += march?armv7ve=mcpu?cortex-a15
-MULTILIB_MATCHES += march?armv7ve=mcpu?cortex-a12
-MULTILIB_MATCHES += march?armv7ve=mcpu?cortex-a17
-MULTILIB_MATCHES += march?armv7ve=mcpu?cortex-a15.cortex-a7
-MULTILIB_MATCHES += march?armv7ve=mcpu?cortex-a17.cortex-a7
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a32
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a35
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a53
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a57
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a57.cortex-a53
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a72
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a72.cortex-a53
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a73
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a73.cortex-a35
-MULTILIB_MATCHES += march?armv8-a=mcpu?cortex-a73.cortex-a53
-MULTILIB_MATCHES += march?armv8-a=mcpu?exynos-m1
-MULTILIB_MATCHES += march?armv8-a=mcpu?qdf24xx
-MULTILIB_MATCHES += march?armv8-a=mcpu?xgene1
+# Arch and FPU variants to build libraries with
+
+MULTI_ARCH_OPTS_A = march=armv7-a/march=armv7-a+fp/march=armv7-a+simd/march=armv7ve+simd/march=armv8-a/march=armv8-a+simd/march=armv9-a/march=armv9-a+simd
+MULTI_ARCH_DIRS_A = v7-a v7-a+fp v7-a+simd v7ve+simd v8-a v8-a+simd v9-a v9-a+simd
+
+# ARMv7-A - build nofp, fp-d16 and SIMD variants
+
+MULTILIB_REQUIRED += mthumb/march=armv7-a/mfloat-abi=soft
+MULTILIB_REQUIRED += mthumb/march=armv7-a+fp/mfloat-abi=hard
+MULTILIB_REQUIRED += mthumb/march=armv7-a+fp/mfloat-abi=softfp
+MULTILIB_REQUIRED += mthumb/march=armv7-a+simd/mfloat-abi=hard
+MULTILIB_REQUIRED += mthumb/march=armv7-a+simd/mfloat-abi=softfp
+
+# ARMv7VE - only build a SIMD (+VFPv4) variant.
+MULTILIB_REQUIRED += mthumb/march=armv7ve+simd/mfloat-abi=hard
+MULTILIB_REQUIRED += mthumb/march=armv7ve+simd/mfloat-abi=softfp
+
+# ARMv8-A - build nofp and SIMD variants.
+MULTILIB_REQUIRED += mthumb/march=armv8-a/mfloat-abi=soft
+MULTILIB_REQUIRED += mthumb/march=armv8-a+simd/mfloat-abi=hard
+MULTILIB_REQUIRED += mthumb/march=armv8-a+simd/mfloat-abi=softfp
+
+# Armv9-A - build nofp and SIMD variants.
+MULTILIB_REQUIRED += mthumb/march=armv9-a/mfloat-abi=soft
+MULTILIB_REQUIRED += mthumb/march=armv9-a+simd/mfloat-abi=hard
+MULTILIB_REQUIRED += mthumb/march=armv9-a+simd/mfloat-abi=softfp
+
+# Matches
# Arch Matches
-MULTILIB_MATCHES += march?armv8-a=march?armv8-a+crc
-MULTILIB_MATCHES += march?armv8-a=march?armv8.1-a
-MULTILIB_MATCHES += march?armv8-a=march?armv8.1-a+crc
-MULTILIB_MATCHES += march?armv8-a=march?armv8.2-a
-MULTILIB_MATCHES += march?armv8-a=march?armv8.2-a+fp16
+# Map all basic v7-a arch extensions to v7-a
+MULTILIB_MATCHES += $(foreach ARCH, $(v7_a_arch_variants), \
+ march?armv7-a=march?armv7-a$(ARCH))
+
+# Map all v7-a FP variants to vfpv3-d16 (+fp)
+MULTILIB_MATCHES += $(foreach ARCH, $(filter-out +fp, $(v7_a_nosimd_variants)), \
+ march?armv7-a+fp=march?armv7-a$(ARCH))
+
+MULTILIB_MATCHES += $(foreach ARCHVAR, $(v7_a_arch_variants), \
+ $(foreach ARCH, $(v7_a_nosimd_variants), \
+ march?armv7-a+fp=march?armv7-a$(ARCHVAR)$(ARCH)))
+
+# Map all v7-a SIMD variants to neon-vfpv3 (+simd)
+MULTILIB_MATCHES += $(foreach ARCH, $(filter-out +simd, $(v7_a_simd_variants)), \
+ march?armv7-a+simd=march?armv7-a$(ARCH))
+
+MULTILIB_MATCHES += $(foreach ARCHVAR, $(v7_a_arch_variants), \
+ $(foreach ARCH, $(v7_a_simd_variants), \
+ march?armv7-a+simd=march?armv7-a$(ARCHVAR)$(ARCH)))
+
+# Neither FP nor SIMD: map v7ve to v7-a
+MULTILIB_MATCHES += march?armv7-a=march?armv7ve
+
+# ARMv7ve FP-only variants: map down to v7-a+fp
+MULTILIB_MATCHES += $(foreach ARCH, $(v7ve_nosimd_variants), \
+ march?armv7-a+fp=march?armv7ve$(ARCH))
+
+# ARMv7ve with SIMD, but SIMD is less capable than the default - map down to v7-a+simd
+MULTILIB_MATCHES += $(foreach ARCH, $(v7ve_vfpv3_simd_variants), \
+ march?armv7-a+simd=march?armv7ve$(ARCH))
+
+# ARMv8 without SIMD: map down to base architecture
+MULTILIB_MATCHES += $(foreach ARCH, $(v8_a_nosimd_variants), \
+ march?armv8-a=march?armv8-a$(ARCH))
-# FPU matches
-MULTILIB_MATCHES += mfpu?vfpv3-d16=mfpu?vfpv3
-MULTILIB_MATCHES += mfpu?vfpv3-d16=mfpu?vfpv3-fp16
-MULTILIB_MATCHES += mfpu?vfpv3-d16=mfpu?vfpv3-d16-fp16
-MULTILIB_MATCHES += mfpu?neon=mfpu?neon-fp16
-MULTILIB_MATCHES += mfpu?vfpv4-d16=mfpu?vfpv4
-MULTILIB_MATCHES += mfpu?vfpv4-d16=mfpu?fpv5-d16
-MULTILIB_MATCHES += mfpu?vfpv4-d16=mfpu?fp-armv8
-MULTILIB_MATCHES += mfpu?neon-fp-armv8=mfpu?crypto-neon-fp-armv8
+# ARMv8 with SIMD: map down to base arch + simd
+MULTILIB_MATCHES += march?armv8-a+simd=march?armv8-a+crc+simd \
+ $(foreach ARCH, $(filter-out +simd, $(v8_a_simd_variants)), \
+ march?armv8-a+simd=march?armv8-a$(ARCH) \
+ march?armv8-a+simd=march?armv8-a+crc$(ARCH))
+# Baseline v8.1-a: map down to baseline v8-a
+MULTILIB_MATCHES += march?armv8-a=march?armv8.1-a
-# Map all requests for vfpv3 with a later CPU to vfpv3-d16 v7-a.
-# So if new CPUs are added above at the newer architecture levels,
-# do something to map them below here.
-# We take the approach of mapping down to v7-a regardless of what
-# the fp option is if the integer architecture brings things down.
-# This applies to any similar combination at the v7ve and v8-a arch
-# levels.
+# Map all v8.1-a SIMD variants to v8-a+simd
+MULTILIB_MATCHES += $(foreach ARCH, $(v8_1_a_simd_variants), \
+ march?armv8-a+simd=march?armv8.1-a$(ARCH))
-MULTILIB_REUSE += march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.hard=march.armv7ve/mfpu.vfpv3-d16/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.softfp=march.armv7ve/mfpu.vfpv3-d16/mfloat-abi.softfp
-MULTILIB_REUSE += march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.hard=march.armv8-a/mfpu.vfpv3-d16/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.softfp=march.armv8-a/mfpu.vfpv3-d16/mfloat-abi.softfp
-MULTILIB_REUSE += march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.hard=march.armv7-a/mfpu.vfpv4-d16/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.softfp=march.armv7-a/mfpu.vfpv4-d16/mfloat-abi.softfp
+# Baseline v8.2-a: map down to baseline v8-a
+MULTILIB_MATCHES += march?armv8-a=march?armv8.2-a
+# Baseline v8.3-a: map down to baseline v8-a
+MULTILIB_MATCHES += march?armv8-a=march?armv8.3-a
-MULTILIB_REUSE += march.armv7-a/mfpu.neon/mfloat-abi.hard=march.armv7ve/mfpu.neon/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7-a/mfpu.neon/mfloat-abi.softfp=march.armv7ve/mfpu.neon/mfloat-abi.softfp
-MULTILIB_REUSE += march.armv7-a/mfpu.neon/mfloat-abi.hard=march.armv8-a/mfpu.neon/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7-a/mfpu.neon/mfloat-abi.softfp=march.armv8-a/mfpu.neon/mfloat-abi.softfp
-MULTILIB_REUSE += march.armv7-a/mfpu.neon/mfloat-abi.hard=march.armv7-a/mfpu.neon-vfpv4/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7-a/mfpu.neon/mfloat-abi.softfp=march.armv7-a/mfpu.neon-vfpv4/mfloat-abi.softfp
-MULTILIB_REUSE += march.armv7-a/mfpu.neon/mfloat-abi.hard=march.armv7-a/mfpu.neon-fp-armv8/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7-a/mfpu.neon/mfloat-abi.softfp=march.armv7-a/mfpu.neon-fp-armv8/mfloat-abi.softfp
+# Map all v8.2-a and v8.3-a SIMD variants to v8-a+simd
+MULTILIB_MATCHES += $(foreach ARCH, $(v8_2_a_simd_variants), \
+ march?armv8-a+simd=march?armv8.2-a$(ARCH) \
+ march?armv8-a+simd=march?armv8.3-a$(ARCH))
+# Baseline v8.4-a: map down to baseline v8-a
+MULTILIB_MATCHES += march?armv8-a=march?armv8.4-a
-MULTILIB_REUSE += march.armv7ve/mfpu.vfpv4-d16/mfloat-abi.hard=march.armv8-a/mfpu.vfpv4-d16/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7ve/mfpu.vfpv4-d16/mfloat-abi.softfp=march.armv8-a/mfpu.vfpv4-d16/mfloat-abi.softfp
+# Map all v8.4-a SIMD variants to v8-a+simd
+MULTILIB_MATCHES += $(foreach ARCH, $(v8_4_a_simd_variants), \
+ march?armv8-a+simd=march?armv8.4-a$(ARCH))
+# Baseline v8.5-a: map down to baseline v8-a
+MULTILIB_MATCHES += march?armv8-a=march?armv8.5-a
-MULTILIB_REUSE += march.armv7ve/mfpu.neon-vfpv4/mfloat-abi.hard=march.armv8-a/mfpu.neon-vfpv4/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7ve/mfpu.neon-vfpv4/mfloat-abi.softfp=march.armv8-a/mfpu.neon-vfpv4/mfloat-abi.softfp
-MULTILIB_REUSE += march.armv7ve/mfpu.neon-vfpv4/mfloat-abi.hard=march.armv7ve/mfpu.neon-fp-armv8/mfloat-abi.hard
-MULTILIB_REUSE += march.armv7ve/mfpu.neon-vfpv4/mfloat-abi.softfp=march.armv7ve/mfpu.neon-fp-armv8/mfloat-abi.softfp
+# Map all v8.5-a SIMD variants to v8-a+simd
+MULTILIB_MATCHES += $(foreach ARCH, $(v8_5_a_simd_variants), \
+ march?armv8-a+simd=march?armv8.5-a$(ARCH))
+# Baseline v8.6-a: map down to baseline v8-a
+MULTILIB_MATCHES += march?armv8-a=march?armv8.6-a
+# Map all v8.6-a SIMD variants to v8-a+simd
+MULTILIB_MATCHES += $(foreach ARCH, $(v8_6_a_simd_variants), \
+ march?armv8-a+simd=march?armv8.6-a$(ARCH))
-# And again for mthumb.
+# Armv9 without SIMD: map down to base architecture
+MULTILIB_MATCHES += $(foreach ARCH, $(v9_a_nosimd_variants), \
+ march?armv9-a=march?armv9-a$(ARCH))
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.hard=mthumb/march.armv7ve/mfpu.vfpv3-d16/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.softfp=mthumb/march.armv7ve/mfpu.vfpv3-d16/mfloat-abi.softfp
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.hard=mthumb/march.armv8-a/mfpu.vfpv3-d16/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.softfp=mthumb/march.armv8-a/mfpu.vfpv3-d16/mfloat-abi.softfp
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.hard=mthumb/march.armv7-a/mfpu.vfpv4-d16/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.vfpv3-d16/mfloat-abi.softfp=mthumb/march.armv7-a/mfpu.vfpv4-d16/mfloat-abi.softfp
+# Armv9 with SIMD: map down to base arch + simd
+MULTILIB_MATCHES += march?armv9-a+simd=march?armv9-a+crc+simd \
+ $(foreach ARCH, $(filter-out +simd, $(v9_a_simd_variants)), \
+ march?armv9-a+simd=march?armv9-a$(ARCH) \
+ march?armv9-a+simd=march?armv9-a+crc$(ARCH))
+# Use Thumb libraries for everything.
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.neon/mfloat-abi.hard=mthumb/march.armv7ve/mfpu.neon/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.neon/mfloat-abi.softfp=mthumb/march.armv7ve/mfpu.neon/mfloat-abi.softfp
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.neon/mfloat-abi.hard=mthumb/march.armv8-a/mfpu.neon/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.neon/mfloat-abi.softfp=mthumb/march.armv8-a/mfpu.neon/mfloat-abi.softfp
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.neon/mfloat-abi.hard=mthumb/march.armv7-a/mfpu.neon-vfpv4/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.neon/mfloat-abi.softfp=mthumb/march.armv7-a/mfpu.neon-vfpv4/mfloat-abi.softfp
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.neon/mfloat-abi.hard=mthumb/march.armv7-a/mfpu.neon-fp-armv8/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7-a/mfpu.neon/mfloat-abi.softfp=mthumb/march.armv7-a/mfpu.neon-fp-armv8/mfloat-abi.softfp
+MULTILIB_REUSE += mthumb/march.armv7-a/mfloat-abi.soft=marm/march.armv7-a/mfloat-abi.soft
+MULTILIB_REUSE += mthumb/march.armv8-a/mfloat-abi.soft=marm/march.armv8-a/mfloat-abi.soft
-MULTILIB_REUSE += mthumb/march.armv7ve/mfpu.vfpv4-d16/mfloat-abi.hard=mthumb/march.armv8-a/mfpu.vfpv4-d16/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7ve/mfpu.vfpv4-d16/mfloat-abi.softfp=mthumb/march.armv8-a/mfpu.vfpv4-d16/mfloat-abi.softfp
+MULTILIB_REUSE += mthumb/march.armv9-a/mfloat-abi.soft=marm/march.armv9-a/mfloat-abi.soft
+MULTILIB_REUSE += $(foreach ABI, hard softfp, \
+ $(foreach ARCH, armv7-a+fp armv7-a+simd armv7ve+simd armv8-a+simd armv9-a+simd, \
+ mthumb/march.$(ARCH)/mfloat-abi.$(ABI)=marm/march.$(ARCH)/mfloat-abi.$(ABI)))
-MULTILIB_REUSE += mthumb/march.armv7ve/mfpu.neon-vfpv4/mfloat-abi.hard=mthumb/march.armv8-a/mfpu.neon-vfpv4/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7ve/mfpu.neon-vfpv4/mfloat-abi.softfp=mthumb/march.armv8-a/mfpu.neon-vfpv4/mfloat-abi.softfp
-MULTILIB_REUSE += mthumb/march.armv7ve/mfpu.neon-vfpv4/mfloat-abi.hard=mthumb/march.armv7ve/mfpu.neon-fp-armv8/mfloat-abi.hard
-MULTILIB_REUSE += mthumb/march.armv7ve/mfpu.neon-vfpv4/mfloat-abi.softfp=mthumb/march.armv7ve/mfpu.neon-fp-armv8/mfloat-abi.softfp
+# Softfp but no FP, use the soft-float libraries.
+MULTILIB_REUSE += $(foreach MODE, arm thumb, \
+ $(foreach ARCH, armv7-a armv8-a armv9-a, \
+ mthumb/march.$(ARCH)/mfloat-abi.soft=m$(MODE)/march.$(ARCH)/mfloat-abi.softfp))
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