handle_move_double in m68k.c has a special case to handle movd
N(sp),-(sp), but this case can happen with any (address) register,
especially if a stack like variable is forced into a register (this
happened in gforth). Bootstrapped on m68k-suse-linux and installed on
trunk and gcc-4.8 branch.
Andreas.
* config/m68k/m68k.c (handle_move_double): Handle pushes with
overlapping registers also for registers other than the stack
pointer.
---
gcc/config/m68k/m68k.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c
index 25b8580..f20d071 100644
--- a/gcc/config/m68k/m68k.c
+++ b/gcc/config/m68k/m68k.c
@@ -3328,12 +3328,12 @@ handle_move_double (rtx operands[2],
latehalf[1] = adjust_address (operands[1], SImode, 0);
}
- /* 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. */
+ /* If insn is effectively movd N(REG),-(REG) then we will do the high
+ word first. We should use the adjusted operand 1 (which is N+4(REG))
+ for the low word as well, to compensate for the first decrement of
+ REG. */
if (optype0 == PUSHOP
- && REGNO (XEXP (XEXP (operands[0], 0), 0)) == STACK_POINTER_REGNUM
- && reg_overlap_mentioned_p (stack_pointer_rtx, operands[1]))
+ && reg_overlap_mentioned_p (XEXP (XEXP (operands[0], 0), 0),
operands[1]))
operands[1] = middlehalf[1] = latehalf[1];
/* For (set (reg:DI N) (mem:DI ... (reg:SI N) ...)),
--
1.8.5.2
--
Andreas Schwab, sch...@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
