@@ -34,5 +34,6 @@ AARCH64_FUSION_PAIR ("movk+movk", MOVK_MOVK)
AARCH64_FUSION_PAIR ("adrp+ldr", ADRP_LDR)
AARCH64_FUSION_PAIR ("cmp+branch", CMP_BRANCH)
AARCH64_FUSION_PAIR ("aes+aesmc", AES_AESMC)
+AARCH64_FUSION_PAIR ("alu+branch", ALU_BRANCH)
#undef AARCH64_FUSION_PAIR
@@ -792,7 +792,8 @@ static const struct tune_params thunderx2t99_tunings =
&generic_approx_modes,
4, /* memmov_cost. */
4, /* issue_rate. */
- (AARCH64_FUSE_CMP_BRANCH | AARCH64_FUSE_AES_AESMC), /* fusible_ops */
+ (AARCH64_FUSE_CMP_BRANCH | AARCH64_FUSE_AES_AESMC
+ | AARCH64_FUSE_ALU_BRANCH), /* fusible_ops */
16, /* function_align. */
8, /* jump_align. */
16, /* loop_align. */
@@ -13981,6 +13982,35 @@ aarch_macro_fusion_pair_p (rtx_insn *prev, rtx_insn *curr)
return true;
}
+ if (aarch64_fusion_enabled_p (AARCH64_FUSE_ALU_BRANCH)
+ && any_condjump_p (curr))
+ {
+ /* Fuse ALU operations followed by conditional branch instruction. */
+ switch (get_attr_type (prev))
+ {
+ case TYPE_ALU_IMM:
+ case TYPE_ALU_SREG:
+ case TYPE_ADC_REG:
+ case TYPE_ADC_IMM:
+ case TYPE_ADCS_REG:
+ case TYPE_ADCS_IMM:
+ case TYPE_LOGIC_REG:
+ case TYPE_LOGIC_IMM:
+ case TYPE_CSEL:
+ case TYPE_ADR:
+ case TYPE_MOV_IMM:
+ case TYPE_SHIFT_REG:
+ case TYPE_SHIFT_IMM:
+ case TYPE_BFM:
+ case TYPE_RBIT:
+ case TYPE_REV:
+ case TYPE_EXTEND:
+ return true;
+
+ default:;
+ }
+ }
+
return false;
}