diff --git a/gcc/config/aarch64/aarch64-cores.def b/gcc/config/aarch64/aarch64-cores.def
index eae40b29df6..19dfb133d29 100644
--- a/gcc/config/aarch64/aarch64-cores.def
+++ b/gcc/config/aarch64/aarch64-cores.def
@@ -74,6 +74,7 @@ AARCH64_CORE("thunderxt83",   thunderxt83,   thunderx,  V8A,  (CRC, CRYPTO), thu
 /* Ampere Computing ('\xC0') cores. */
 AARCH64_CORE("ampere1", ampere1, cortexa57, V8_6A, (F16, RNG, AES, SHA3), ampere1, 0xC0, 0xac3, -1)
 AARCH64_CORE("ampere1a", ampere1a, cortexa57, V8_6A, (F16, RNG, AES, SHA3, SM4, MEMTAG), ampere1a, 0xC0, 0xac4, -1)
+AARCH64_CORE("ampere1b", ampere1b, cortexa57, V8_7A, (F16, RNG, AES, SHA3, SM4, MEMTAG, CSSC), ampere1b, 0xC0, 0xac5, -1)
 /* Do not swap around "emag" and "xgene1",
    this order is required to handle variant correctly. */
 AARCH64_CORE("emag",        emag,      xgene1,    V8A,  (CRC, CRYPTO), emag, 0x50, 0x000, 3)
diff --git a/gcc/config/aarch64/aarch64-cost-tables.h b/gcc/config/aarch64/aarch64-cost-tables.h
index 0cb638f3a13..4c8da7f119b 100644
--- a/gcc/config/aarch64/aarch64-cost-tables.h
+++ b/gcc/config/aarch64/aarch64-cost-tables.h
@@ -882,4 +882,111 @@ const struct cpu_cost_table ampere1a_extra_costs =
   }
 };
 
+const struct cpu_cost_table ampere1b_extra_costs =
+{
+  /* ALU */
+  {
+    0,                 /* arith.  */
+    0,                 /* logical.  */
+    0,                 /* shift.  */
+    COSTS_N_INSNS (1), /* shift_reg.  */
+    0,                 /* arith_shift.  */
+    COSTS_N_INSNS (1), /* arith_shift_reg.  */
+    0,                 /* log_shift.  */
+    COSTS_N_INSNS (1), /* log_shift_reg.  */
+    0,                 /* extend.  */
+    COSTS_N_INSNS (1), /* extend_arith.  */
+    0,                 /* bfi.  */
+    0,                 /* bfx.  */
+    0,                 /* clz.  */
+    0,                 /* rev.  */
+    0,                 /* non_exec.  */
+    true               /* non_exec_costs_exec.  */
+  },
+  {
+    /* MULT SImode */
+    {
+      COSTS_N_INSNS (2),       /* simple.  */
+      COSTS_N_INSNS (2),       /* flag_setting.  */
+      COSTS_N_INSNS (2),       /* extend.  */
+      COSTS_N_INSNS (3),       /* add.  */
+      COSTS_N_INSNS (3),       /* extend_add.  */
+      COSTS_N_INSNS (12)       /* idiv.  */
+    },
+    /* MULT DImode */
+    {
+      COSTS_N_INSNS (2),       /* simple.  */
+      0,                       /* flag_setting (N/A).  */
+      COSTS_N_INSNS (2),       /* extend.  */
+      COSTS_N_INSNS (3),       /* add.  */
+      COSTS_N_INSNS (3),       /* extend_add.  */
+      COSTS_N_INSNS (18)       /* idiv.  */
+    }
+  },
+  /* LD/ST */
+  {
+    COSTS_N_INSNS (2),         /* load.  */
+    COSTS_N_INSNS (2),         /* load_sign_extend.  */
+    0,                         /* ldrd (n/a).  */
+    0,                         /* ldm_1st.  */
+    0,                         /* ldm_regs_per_insn_1st.  */
+    0,                         /* ldm_regs_per_insn_subsequent.  */
+    COSTS_N_INSNS (3),         /* loadf.  */
+    COSTS_N_INSNS (3),         /* loadd.  */
+    COSTS_N_INSNS (3),         /* load_unaligned.  */
+    0,                         /* store.  */
+    0,                         /* strd.  */
+    0,                         /* stm_1st.  */
+    0,                         /* stm_regs_per_insn_1st.  */
+    0,                         /* stm_regs_per_insn_subsequent.  */
+    COSTS_N_INSNS (1),         /* storef.  */
+    COSTS_N_INSNS (1),         /* stored.  */
+    COSTS_N_INSNS (1),         /* store_unaligned.  */
+    COSTS_N_INSNS (3),         /* loadv.  */
+    COSTS_N_INSNS (3)          /* storev.  */
+  },
+  {
+    /* FP SFmode */
+    {
+      COSTS_N_INSNS (18),      /* div.  */
+      COSTS_N_INSNS (3),       /* mult.  */
+      COSTS_N_INSNS (3),       /* mult_addsub.  */
+      COSTS_N_INSNS (3),       /* fma.  */
+      COSTS_N_INSNS (2),       /* addsub.  */
+      COSTS_N_INSNS (1),       /* fpconst.  */
+      COSTS_N_INSNS (2),       /* neg.  */
+      COSTS_N_INSNS (2),       /* compare.  */
+      COSTS_N_INSNS (2),       /* widen.  */
+      COSTS_N_INSNS (2),       /* narrow.  */
+      COSTS_N_INSNS (6),       /* toint.  */
+      COSTS_N_INSNS (4),       /* fromint.  */
+      COSTS_N_INSNS (2)        /* roundint.  */
+    },
+    /* FP DFmode */
+    {
+      COSTS_N_INSNS (18),      /* div.  */
+      COSTS_N_INSNS (3),       /* mult.  */
+      COSTS_N_INSNS (3),       /* mult_addsub.  */
+      COSTS_N_INSNS (3),       /* fma.  */
+      COSTS_N_INSNS (2),       /* addsub.  */
+      COSTS_N_INSNS (1),       /* fpconst.  */
+      COSTS_N_INSNS (2),       /* neg.  */
+      COSTS_N_INSNS (2),       /* compare.  */
+      COSTS_N_INSNS (2),       /* widen.  */
+      COSTS_N_INSNS (2),       /* narrow.  */
+      COSTS_N_INSNS (6),       /* toint.  */
+      COSTS_N_INSNS (4),       /* fromint.  */
+      COSTS_N_INSNS (2)        /* roundint.  */
+    }
+  },
+  /* Vector */
+  {
+    COSTS_N_INSNS (1),  /* alu.  */
+    COSTS_N_INSNS (2),  /* mult.  */
+    COSTS_N_INSNS (1),  /* movi.  */
+    COSTS_N_INSNS (1),  /* dup.  */
+    COSTS_N_INSNS (1)   /* extract.  */
+  }
+};
+
 #endif
diff --git a/gcc/config/aarch64/aarch64-tune.md b/gcc/config/aarch64/aarch64-tune.md
index c969277d617..737be6da71b 100644
--- a/gcc/config/aarch64/aarch64-tune.md
+++ b/gcc/config/aarch64/aarch64-tune.md
@@ -1,5 +1,5 @@
 ;; -*- buffer-read-only: t -*-
 ;; Generated automatically by gentune.sh from aarch64-cores.def
 (define_attr "tune"
-	"cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thunderxt81,thunderxt83,ampere1,ampere1a,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa76ae,cortexa77,cortexa78,cortexa78ae,cortexa78c,cortexa65,cortexa65ae,cortexx1,cortexx1c,neoversen1,ares,neoversee1,octeontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx2f95n,octeontx2f95mm,a64fx,tsv110,thunderx3t110,neoversev1,zeus,neoverse512tvb,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55,cortexr82,cortexa510,cortexa520,cortexa710,cortexa715,cortexa720,cortexx2,cortexx3,cortexx4,neoversen2,neoversev2,demeter"
+	"cortexa34,cortexa35,cortexa53,cortexa57,cortexa72,cortexa73,thunderx,thunderxt88p1,thunderxt88,octeontx,octeontxt81,octeontxt83,thunderxt81,thunderxt83,ampere1,ampere1a,ampere1b,emag,xgene1,falkor,qdf24xx,exynosm1,phecda,thunderx2t99p1,vulcan,thunderx2t99,cortexa55,cortexa75,cortexa76,cortexa76ae,cortexa77,cortexa78,cortexa78ae,cortexa78c,cortexa65,cortexa65ae,cortexx1,cortexx1c,neoversen1,ares,neoversee1,octeontx2,octeontx2t98,octeontx2t96,octeontx2t93,octeontx2f95,octeontx2f95n,octeontx2f95mm,a64fx,tsv110,thunderx3t110,neoversev1,zeus,neoverse512tvb,saphira,cortexa57cortexa53,cortexa72cortexa53,cortexa73cortexa35,cortexa73cortexa53,cortexa75cortexa55,cortexa76cortexa55,cortexr82,cortexa510,cortexa520,cortexa710,cortexa715,cortexa720,cortexx2,cortexx3,cortexx4,neoversen2,neoversev2,demeter"
 	(const (symbol_ref "((enum attr_tune) aarch64_tune)")))
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index d89c94519e9..ffcf7ed65b8 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -2013,6 +2013,95 @@ static const struct tune_params ampere1a_tunings =
   AARCH64_LDP_STP_POLICY_ALIGNED    /* stp_policy_model.  */
 };
 
+static const cpu_prefetch_tune ampere1b_prefetch_tune =
+{
+  48,			/* num_slots  */
+  64,			/* l1_cache_size  */
+  64,			/* l1_cache_line_size  */
+  2048,			/* l2_cache_size  */
+  true,			/* prefetch_dynamic_strides */
+  -1,			/* minimum_stride */
+  -1			/* default_opt_level  */
+};
+
+static const advsimd_vec_cost ampere1b_advsimd_vector_cost =
+{
+  1, /* int_stmt_cost  */
+  3, /* fp_stmt_cost  */
+  0, /* ld2_st2_permute_cost  */
+  0, /* ld3_st3_permute_cost  */
+  0, /* ld4_st4_permute_cost  */
+  2, /* permute_cost  */
+  8, /* reduc_i8_cost  */
+  6, /* reduc_i16_cost  */
+  4, /* reduc_i32_cost  */
+  2, /* reduc_i64_cost  */
+  9, /* reduc_f16_cost  */
+  6, /* reduc_f32_cost  */
+  3, /* reduc_f64_cost  */
+  5, /* store_elt_extra_cost  */
+  5, /* vec_to_scalar_cost  */
+  5, /* scalar_to_vec_cost  */
+  4, /* align_load_cost  */
+  4, /* unalign_load_cost  */
+  1, /* unalign_store_cost  */
+  1  /* store_cost  */
+};
+
+/* Ampere-1B costs for vector insn classes.  */
+static const struct cpu_vector_cost ampere1b_vector_cost =
+{
+  1, /* scalar_int_stmt_cost  */
+  3, /* scalar_fp_stmt_cost  */
+  4, /* scalar_load_cost  */
+  1, /* scalar_store_cost  */
+  1, /* cond_taken_branch_cost  */
+  1, /* cond_not_taken_branch_cost  */
+  &ampere1b_advsimd_vector_cost, /* advsimd  */
+  nullptr, /* sve  */
+  nullptr  /* issue_info  */
+};
+
+static const struct tune_params ampere1b_tunings =
+{
+  &ampere1b_extra_costs,
+  &generic_addrcost_table,
+  &generic_regmove_cost,
+  &ampere1b_vector_cost,
+  &generic_branch_cost,
+  &generic_approx_modes,
+  SVE_NOT_IMPLEMENTED, /* sve_width  */
+  { 3, /* load_int.  */
+    1, /* store_int.  */
+    4, /* load_fp.  */
+    4, /* store_fp.  */
+    4, /* load_pred.  */
+    4 /* store_pred.  */
+  }, /* memmov_cost.  */
+  4, /* issue_rate  */
+  (AARCH64_FUSE_ADRP_ADD | AARCH64_FUSE_AES_AESMC |
+   AARCH64_FUSE_MOV_MOVK | AARCH64_FUSE_MOVK_MOVK |
+   AARCH64_FUSE_ALU_BRANCH /* adds, ands, bics, ccmp, ccmn */ |
+   AARCH64_FUSE_CMP_BRANCH | AARCH64_FUSE_ALU_CBZ |
+   AARCH64_FUSE_ADDSUB_2REG_CONST1),
+  /* fusible_ops  */
+  "32",		/* function_align.  */
+  "4",		/* jump_align.  */
+  "32:16",	/* loop_align.  */
+  2,	/* int_reassoc_width.  */
+  4,	/* fp_reassoc_width.  */
+  1,	/* fma_reassoc_width.  */
+  2,	/* vec_reassoc_width.  */
+  2,	/* min_div_recip_mul_sf.  */
+  2,	/* min_div_recip_mul_df.  */
+  0,	/* max_case_values.  */
+  tune_params::AUTOPREFETCHER_STRONG,	/* autoprefetcher_model.  */
+  (AARCH64_EXTRA_TUNE_CHEAP_SHIFT_EXTEND),	/* tune_flags.  */
+  &ampere1b_prefetch_tune,
+  AARCH64_LDP_STP_POLICY_ALIGNED,   /* ldp_policy_model.  */
+  AARCH64_LDP_STP_POLICY_ALIGNED    /* stp_policy_model.  */
+};
+
 static const advsimd_vec_cost neoversev1_advsimd_vector_cost =
 {
   2, /* int_stmt_cost  */
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 1748afdbfe0..58edb85039f 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -20755,7 +20755,7 @@ performance of the code.  Permissible values for this option are:
 @samp{cortex-r82}, @samp{cortex-x1}, @samp{cortex-x1c}, @samp{cortex-x2},
 @samp{cortex-x3}, @samp{cortex-x4}, @samp{cortex-a510}, @samp{cortex-a520},
 @samp{cortex-a710}, @samp{cortex-a715}, @samp{cortex-a720}, @samp{ampere1},
-@samp{ampere1a}, and @samp{native}.
+@samp{ampere1a}, @samp{ampere1b}, and @samp{native}.
 
 The values @samp{cortex-a57.cortex-a53}, @samp{cortex-a72.cortex-a53},
 @samp{cortex-a73.cortex-a35}, @samp{cortex-a73.cortex-a53},
