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From ff7193c5313d736e20aa66c33abeaf102cc6c152 Mon Sep 17 00:00:00 2001
From: Richard Sandiford <richard.sandiford@arm.com>
Date: Fri, 16 Jun 2023 17:44:39 +0100
Subject: [PATCH] aarch64: Simplify top of frame allocation
After previous patches, it no longer really makes sense to allocate
the top of the frame in terms of varargs_and_saved_regs_size and
saved_regs_and_above.
gcc/
* config/aarch64/aarch64.c (aarch64_layout_frame): Simplify
the allocation of the top of the frame.
---
gcc/config/aarch64/aarch64.c | 23 ++++++++---------------
1 file changed, 8 insertions(+), 15 deletions(-)
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 1ed335f5487..70542c6e13f 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -7010,23 +7010,16 @@ aarch64_layout_frame (void)
frame.saved_regs_size = offset - frame.bytes_below_saved_regs;
- poly_int64 varargs_and_saved_regs_size
- = frame.saved_regs_size + frame.saved_varargs_size;
-
- poly_int64 saved_regs_and_above
- = aligned_upper_bound (varargs_and_saved_regs_size
- + get_frame_size (),
- STACK_BOUNDARY / BITS_PER_UNIT);
-
- frame.bytes_above_hard_fp
- = saved_regs_and_above - frame.below_hard_fp_saved_regs_size;
+ offset += get_frame_size ();
+ offset = aligned_upper_bound (offset, STACK_BOUNDARY / BITS_PER_UNIT);
+ poly_int64 top_of_locals = offset;
- /* Both these values are already aligned. */
- gcc_assert (multiple_p (frame.bytes_below_saved_regs,
- STACK_BOUNDARY / BITS_PER_UNIT));
- frame.frame_size = saved_regs_and_above + frame.bytes_below_saved_regs;
+ offset += frame.saved_varargs_size;
+ gcc_assert (multiple_p (offset, STACK_BOUNDARY / BITS_PER_UNIT));
+ frame.frame_size = offset;
- frame.bytes_above_locals = frame.saved_varargs_size;
+ frame.bytes_above_hard_fp = frame.frame_size - frame.bytes_below_hard_fp;
+ frame.bytes_above_locals = frame.frame_size - top_of_locals;
frame.initial_adjust = 0;
frame.final_adjust = 0;
--
2.39.3
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