diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/m68k/m68k.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c index 8f26871..37298e5 100644 --- a/gcc/config/m68k/m68k.c +++ b/gcc/config/m68k/m68k.c @@ -1497,10 +1497,13 @@ output_move_qimode (operands) /* This is probably useless, since it loses for pushing a struct of several bytes a byte at a time. */ + /* 68k family always modifies the stack pointer by at least 2, even for + byte pushes. The 5200 (coldfire) does not do this. */ if (GET_CODE (operands[0]) == MEM && GET_CODE (XEXP (operands[0], 0)) == PRE_DEC && XEXP (XEXP (operands[0], 0), 0) == stack_pointer_rtx - && ! ADDRESS_REG_P (operands[1])) + && ! ADDRESS_REG_P (operands[1]) + && ! TARGET_5200) { xoperands[1] = operands[1]; xoperands[2] @@ -1551,7 +1554,10 @@ output_move_qimode (operands) } if (GET_CODE (operands[1]) != CONST_INT && CONSTANT_P (operands[1])) return "move%.l %1,%0"; - if (ADDRESS_REG_P (operands[0]) || ADDRESS_REG_P (operands[1])) + /* 68k family doesn't support byte moves to from address registers. The + 5200 (coldfire) does not have this restriction. */ + if ((ADDRESS_REG_P (operands[0]) || ADDRESS_REG_P (operands[1])) + && ! TARGET_5200) return "move%.w %1,%0"; return "move%.b %1,%0"; } |