From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by sourceware.org (Postfix) with ESMTP id EF3F8385C6DB for ; Tue, 12 Sep 2023 15:25:44 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org EF3F8385C6DB Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C949FC15; Tue, 12 Sep 2023 08:26:21 -0700 (PDT) Received: from e121540-lin.manchester.arm.com (e121540-lin.manchester.arm.com [10.32.110.72]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2B3B13F738; Tue, 12 Sep 2023 08:25:44 -0700 (PDT) From: Richard Sandiford To: gcc-patches@gcc.gnu.org Cc: Richard Sandiford Subject: [PATCH 09/19] aarch64: Rename hard_fp_offset to bytes_above_hard_fp Date: Tue, 12 Sep 2023 16:25:19 +0100 Message-Id: <20230912152529.3322336-10-richard.sandiford@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230912152529.3322336-1-richard.sandiford@arm.com> References: <20230912152529.3322336-1-richard.sandiford@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-25.2 required=5.0 tests=BAYES_00,GIT_PATCH_0,KAM_DMARC_NONE,KAM_DMARC_STATUS,KAM_LAZY_DOMAIN_SECURITY,SPF_HELO_NONE,SPF_NONE,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: Similarly to the previous locals_offset patch, hard_fp_offset was described as: /* Offset from the base of the frame (incomming SP) to the hard_frame_pointer. This value is always a multiple of STACK_BOUNDARY. */ poly_int64 hard_fp_offset; which again took an “upside-down” view: higher offsets meant lower addresses. This patch renames the field to bytes_above_hard_fp instead. gcc/ * config/aarch64/aarch64.h (aarch64_frame::hard_fp_offset): Rename to... (aarch64_frame::bytes_above_hard_fp): ...this. * config/aarch64/aarch64.cc (aarch64_layout_frame) (aarch64_expand_prologue): Update accordingly. (aarch64_initial_elimination_offset): Likewise. --- gcc/config/aarch64/aarch64.cc | 26 +++++++++++++------------- gcc/config/aarch64/aarch64.h | 6 +++--- 2 files changed, 16 insertions(+), 16 deletions(-) diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc index bcd1dec6f51..7d642d06871 100644 --- a/gcc/config/aarch64/aarch64.cc +++ b/gcc/config/aarch64/aarch64.cc @@ -8629,7 +8629,7 @@ aarch64_layout_frame (void) + get_frame_size (), STACK_BOUNDARY / BITS_PER_UNIT); - frame.hard_fp_offset + frame.bytes_above_hard_fp = saved_regs_and_above - frame.below_hard_fp_saved_regs_size; /* Both these values are already aligned. */ @@ -8678,13 +8678,13 @@ aarch64_layout_frame (void) else if (frame.wb_pop_candidate1 != INVALID_REGNUM) max_push_offset = 256; - HOST_WIDE_INT const_size, const_below_saved_regs, const_fp_offset; + HOST_WIDE_INT const_size, const_below_saved_regs, const_above_fp; HOST_WIDE_INT const_saved_regs_size; if (known_eq (frame.saved_regs_size, 0)) frame.initial_adjust = frame.frame_size; else if (frame.frame_size.is_constant (&const_size) && const_size < max_push_offset - && known_eq (frame.hard_fp_offset, const_size)) + && known_eq (frame.bytes_above_hard_fp, const_size)) { /* Simple, small frame with no data below the saved registers. @@ -8701,8 +8701,8 @@ aarch64_layout_frame (void) case that it hardly seems worth the effort though. */ && (!saves_below_hard_fp_p || const_below_saved_regs == 0) && !(cfun->calls_alloca - && frame.hard_fp_offset.is_constant (&const_fp_offset) - && const_fp_offset < max_push_offset)) + && frame.bytes_above_hard_fp.is_constant (&const_above_fp) + && const_above_fp < max_push_offset)) { /* Frame with small area below the saved registers: @@ -8720,12 +8720,12 @@ aarch64_layout_frame (void) sub sp, sp, hard_fp_offset + below_hard_fp_saved_regs_size save SVE registers relative to SP sub sp, sp, bytes_below_saved_regs */ - frame.initial_adjust = (frame.hard_fp_offset + frame.initial_adjust = (frame.bytes_above_hard_fp + frame.below_hard_fp_saved_regs_size); frame.final_adjust = frame.bytes_below_saved_regs; } - else if (frame.hard_fp_offset.is_constant (&const_fp_offset) - && const_fp_offset < max_push_offset) + else if (frame.bytes_above_hard_fp.is_constant (&const_above_fp) + && const_above_fp < max_push_offset) { /* Frame with large area below the saved registers, or with SVE saves, but with a small area above: @@ -8735,7 +8735,7 @@ aarch64_layout_frame (void) [sub sp, sp, below_hard_fp_saved_regs_size] [save SVE registers relative to SP] sub sp, sp, bytes_below_saved_regs */ - frame.callee_adjust = const_fp_offset; + frame.callee_adjust = const_above_fp; frame.sve_callee_adjust = frame.below_hard_fp_saved_regs_size; frame.final_adjust = frame.bytes_below_saved_regs; } @@ -8750,7 +8750,7 @@ aarch64_layout_frame (void) [sub sp, sp, below_hard_fp_saved_regs_size] [save SVE registers relative to SP] sub sp, sp, bytes_below_saved_regs */ - frame.initial_adjust = frame.hard_fp_offset; + frame.initial_adjust = frame.bytes_above_hard_fp; frame.sve_callee_adjust = frame.below_hard_fp_saved_regs_size; frame.final_adjust = frame.bytes_below_saved_regs; } @@ -10118,7 +10118,7 @@ aarch64_expand_prologue (void) { /* The offset of the frame chain record (if any) from the current SP. */ poly_int64 chain_offset = (initial_adjust + callee_adjust - - frame.hard_fp_offset); + - frame.bytes_above_hard_fp); gcc_assert (known_ge (chain_offset, 0)); if (callee_adjust == 0) @@ -12851,10 +12851,10 @@ aarch64_initial_elimination_offset (unsigned from, unsigned to) if (to == HARD_FRAME_POINTER_REGNUM) { if (from == ARG_POINTER_REGNUM) - return frame.hard_fp_offset; + return frame.bytes_above_hard_fp; if (from == FRAME_POINTER_REGNUM) - return frame.hard_fp_offset - frame.bytes_above_locals; + return frame.bytes_above_hard_fp - frame.bytes_above_locals; } if (to == STACK_POINTER_REGNUM) diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h index 3382f819e72..4a4de9c044e 100644 --- a/gcc/config/aarch64/aarch64.h +++ b/gcc/config/aarch64/aarch64.h @@ -795,10 +795,10 @@ struct GTY (()) aarch64_frame STACK_BOUNDARY. */ poly_int64 bytes_above_locals; - /* Offset from the base of the frame (incomming SP) to the - hard_frame_pointer. This value is always a multiple of + /* The number of bytes between the hard_frame_pointer and the top of + the frame (the incomming SP). This value is always a multiple of STACK_BOUNDARY. */ - poly_int64 hard_fp_offset; + poly_int64 bytes_above_hard_fp; /* The size of the frame. This value is the offset from base of the frame (incomming SP) to the stack_pointer. This value is always -- 2.25.1