From 55788176f1e103a2912bb3b4b6fad65c480276f9 Mon Sep 17 00:00:00 2001 From: Evgeny Karpov Date: Thu, 12 Sep 2024 13:19:32 +0200 Subject: [PATCH] aarch64: Extend the offset limit in "symbol + offset" from 1MB to 16MB This patch allows using an offset of up to 16MB in "symbol + offset", instead of 1MB limit that was used previously. gcc/ChangeLog: * config/aarch64/aarch64.cc (aarch64_load_symref_appropriately): Update. --- gcc/config/aarch64/aarch64.cc | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc index e5e993d3985..a2945f7fd0b 100644 --- a/gcc/config/aarch64/aarch64.cc +++ b/gcc/config/aarch64/aarch64.cc @@ -3030,7 +3030,22 @@ aarch64_load_symref_appropriately (rtx dest, rtx imm, if (can_create_pseudo_p ()) tmp_reg = gen_reg_rtx (mode); + HOST_WIDE_INT mid_const = 0; + if (TARGET_PECOFF) + { + poly_int64 offset; + strip_offset (imm, &offset); + + HOST_WIDE_INT const_offset; + if (offset.is_constant (&const_offset)) + /* Written this way for the sake of negative offsets. */ + mid_const = const_offset / (1 << 20) * (1 << 20); + } + imm = plus_constant (mode, imm, -mid_const); + emit_move_insn (tmp_reg, gen_rtx_HIGH (mode, copy_rtx (imm))); + if (mid_const) + emit_set_insn (tmp_reg, plus_constant (mode, tmp_reg, mid_const)); emit_insn (gen_add_losym (dest, tmp_reg, imm)); return; }