[gcc r16-713] [PATCH] libgcc SH: fix alignment for relaxation

[Jeff Law]

https://gcc.gnu.org/g:de04f593efe611d64cb50575332cef03d6eba561

commit r16-713-gde04f593efe611d64cb50575332cef03d6eba561
Author: Oleg Endo <olegendo@gcc.gnu.org>
Date:   Sat May 17 10:51:35 2025 -0600

    [PATCH] libgcc SH: fix alignment for relaxation
    
    From 6462f1e6a2565c5d4756036d9bc2f39dce9bd768 Mon Sep 17 00:00:00 2001
    From: QBos07 <qubos@outlook.de>
    Date: Sat, 10 May 2025 16:56:28 +0000
    Subject: [PATCH] libgcc SH: fix alignment for relaxation
    
    when relaxation is enabled we can not infer the alignment
    from the position as that may change. This should not change
    non-relaxed builds as its allready aligned there. This was
    the missing piece to building an entire toolchain with -mrelax
    
    Credit goes to Oleg Endo: https://sourceware.org/bugzilla/show_bug.cgi?id=3298#c4
    
    libgcc/
            * config/sh/lib1funcs.S (ashiftrt_r4_32): Increase alignment.
            (movemem): Force alignment of the mova intruction.

Diff:
---
 libgcc/config/sh/lib1funcs.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libgcc/config/sh/lib1funcs.S b/libgcc/config/sh/lib1funcs.S
index eda48066cdc1..11acfd5e3261 100644
--- a/libgcc/config/sh/lib1funcs.S
+++ b/libgcc/config/sh/lib1funcs.S
@@ -115,7 +115,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 	HIDDEN_FUNC(GLOBAL(ashiftrt_r4_31))
 	HIDDEN_FUNC(GLOBAL(ashiftrt_r4_32))
 
-	.align	1
+	.align	4
 GLOBAL(ashiftrt_r4_32):
 GLOBAL(ashiftrt_r4_31):
 	rotcl	r4
@@ -764,6 +764,7 @@ LOCAL(movmem_loop): /* Reached with rts */
 	bt	GLOBAL(movmemSI52)
 ! done all the large groups, do the remainder
 ! jump to movmem+
+	.balign	4
 	mova	GLOBAL(movmemSI4)+4,r0
 	add	r6,r0
 	jmp	@r0