diff options
| -rw-r--r-- | gnu/egcs/gcc/protector.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/gnu/egcs/gcc/protector.c b/gnu/egcs/gcc/protector.c index e867f7faf3a..73feb35cb1b 100644 --- a/gnu/egcs/gcc/protector.c +++ b/gnu/egcs/gcc/protector.c @@ -1493,7 +1493,29 @@ change_arg_use_in_operand (x, orig, new, size) case REG: case ADDRESSOF: return; - + + case MEM: + /* Handle special case of MEM (incoming_args) */ + if (GET_CODE (orig) == MEM + && XEXP (x, 0) == virtual_incoming_args_rtx) + { + offset = 0; + + /* the operand related to the sweep variable */ + if (AUTO_OFFSET(XEXP (orig, 0)) <= offset && + offset < AUTO_OFFSET(XEXP (orig, 0)) + size) { + + offset = AUTO_OFFSET(XEXP (new, 0)) + + (offset - AUTO_OFFSET(XEXP (orig, 0))); + + XEXP (x, 0) = plus_constant (virtual_stack_vars_rtx, offset); + XEXP (x, 0)->used = 1; + + return; + } + } + break; + case PLUS: /* Handle special case of frame register plus constant. */ if (GET_CODE (orig) == MEM /* skip if orig is register variable in the optimization */ |