From e7c2087cea5f1d1b45e9abfe4660dd1be52bb42d Mon Sep 17 00:00:00 2001
From: Richard Stallman <rms@gnu.org>
Date: Sat, 30 Oct 1993 22:11:45 +0000
Subject: [PATCH] (output_move_double): Extend the special case for *--sp =
sp[N] to handle 12 bytes as well as 8 bytes.
From-SVN: r5951
---
gcc/config/i386/i386.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 8ef428910d0f..384cfb076945 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -444,12 +444,14 @@ output_move_double (operands)
}
/* If insn is effectively movd N (sp),-(sp) then we will do the
- high word first. We should use the adjusted operand 1 (which is N+4 (sp))
- for the low word as well, to compensate for the first decrement of sp. */
+ high word first. We should use the adjusted operand 1
+ (which is N+4 (sp) or N+8 (sp))
+ for the low word and middle word as well,
+ to compensate for the first decrement of sp. */
if (optype0 == PUSHOP
&& REGNO (XEXP (XEXP (operands[0], 0), 0)) == STACK_POINTER_REGNUM
&& reg_overlap_mentioned_p (stack_pointer_rtx, operands[1]))
- operands[1] = latehalf[1];
+ middlehalf[1] = operands[1] = latehalf[1];
/* For (set (reg:DI N) (mem:DI ... (reg:SI N) ...)),
if the upper part of reg N does not appear in the MEM, arrange to
--
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