projects / packages / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 250aa0e0 MM |
1 | 2002-08-17 H.J. Lu <hjl@gnu.org> |
| 2 | ||
| 3 | * calls.c (PUSH_ARGS_REVERSED): Define only if not defined. | |
| 4 | * expr.c (PUSH_ARGS_REVERSED): Likewise. | |
| 5 | ||
| 6 | 2002-07-26 H.J. Lu <hjl@gnu.org> | |
| 7 | ||
| 8 | * config/i386/i386.h (PUSH_ARGS_REVERSED): Set to 1. | |
| 9 | ||
| 10 | --- gcc/calls.c.var Thu Apr 4 15:28:47 2002 | |
| 11 | +++ gcc/calls.c Sat Aug 17 22:45:46 2002 | |
| 12 | @@ -46,9 +46,11 @@ Software Foundation, 59 Temple Place - S | |
| 13 | ||
| 14 | #ifdef PUSH_ROUNDING | |
| 15 | ||
| 16 | +#ifndef PUSH_ARGS_REVERSED | |
| 17 | #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) | |
| 18 | #define PUSH_ARGS_REVERSED PUSH_ARGS | |
| 19 | #endif | |
| 20 | +#endif | |
| 21 | ||
| 22 | #endif | |
| 23 | ||
| 24 | --- gcc/config/i386/i386.h.var Sun Jul 14 23:54:36 2002 | |
| 25 | +++ gcc/config/i386/i386.h Sat Aug 17 19:03:21 2002 | |
| 26 | @@ -1581,6 +1581,10 @@ enum reg_class | |
| 27 | ||
| 28 | #define PUSH_ARGS (TARGET_PUSH_ARGS && !ACCUMULATE_OUTGOING_ARGS) | |
| 29 | ||
| 30 | +/* We want the stack and args grow in opposite directions, even if | |
| 31 | + PUSH_ARGS is 0. */ | |
| 32 | +#define PUSH_ARGS_REVERSED 1 | |
| 33 | + | |
| 34 | /* Offset of first parameter from the argument pointer register value. */ | |
| 35 | #define FIRST_PARM_OFFSET(FNDECL) 0 | |
| 36 | ||
| 37 | --- gcc/expr.c.var Mon May 6 22:43:11 2002 | |
| 38 | +++ gcc/expr.c Sat Aug 17 22:52:27 2002 | |
| 39 | @@ -54,9 +54,11 @@ Software Foundation, 59 Temple Place - S | |
| 40 | ||
| 41 | #ifdef PUSH_ROUNDING | |
| 42 | ||
| 43 | +#ifndef PUSH_ARGS_REVERSED | |
| 44 | #if defined (STACK_GROWS_DOWNWARD) != defined (ARGS_GROW_DOWNWARD) | |
| 45 | #define PUSH_ARGS_REVERSED /* If it's last to first. */ | |
| 46 | #endif | |
| 47 | +#endif | |
| 48 | ||
| 49 | #endif | |
| 50 | ||
| 51 | 2002-08-18 H.J. Lu <hjl@gnu.org> | |
| 52 | ||
| 53 | * calls.c (store_one_arg): Remove ATTRIBUTE_UNUSED on | |
| 54 | variable_size. Mark any slots used for the argument as in-use | |
| 55 | only if we can't pass all arguments to a library call in | |
| 56 | registers. | |
| 57 | ||
| 58 | --- gcc/calls.c.copy Sun Aug 18 07:35:11 2002 | |
| 59 | +++ gcc/calls.c Sun Aug 18 08:27:29 2002 | |
| 60 | @@ -4270,7 +4270,7 @@ store_one_arg (arg, argblock, flags, var | |
| 61 | struct arg_data *arg; | |
| 62 | rtx argblock; | |
| 63 | int flags; | |
| 64 | - int variable_size ATTRIBUTE_UNUSED; | |
| 65 | + int variable_size; | |
| 66 | int reg_parm_stack_space; | |
| 67 | { | |
| 68 | tree pval = arg->tree_value; | |
| 69 | @@ -4345,14 +4345,22 @@ store_one_arg (arg, argblock, flags, var | |
| 70 | emit_move_insn (arg->save_area, stack_area); | |
| 71 | } | |
| 72 | } | |
| 73 | + | |
| 74 | + /* Now that we have saved any slots that will be overwritten | |
| 75 | + by this store, mark all slots this store will use. We | |
| 76 | + must do this before we actually expand the argument since | |
| 77 | + the expansion itself may trigger library calls which might | |
| 78 | + need to use the same stack slot. We only do it if we can't | |
| 79 | + pass all arguments to a library call in registers. */ | |
| 80 | + if (arg->partial) | |
| 81 | + { | |
| 82 | + for (i = lower_bound; i < upper_bound; i++) | |
| 83 | + stack_usage_map[i] = 1; | |
| 84 | + | |
| 85 | + /* Set it so that we don't do it again. */ | |
| 86 | + variable_size = 1; | |
| 87 | + } | |
| 88 | } | |
| 89 | - /* Now that we have saved any slots that will be overwritten by this | |
| 90 | - store, mark all slots this store will use. We must do this before | |
| 91 | - we actually expand the argument since the expansion itself may | |
| 92 | - trigger library calls which might need to use the same stack slot. */ | |
| 93 | - if (argblock && ! variable_size && arg->stack) | |
| 94 | - for (i = lower_bound; i < upper_bound; i++) | |
| 95 | - stack_usage_map[i] = 1; | |
| 96 | } | |
| 97 | ||
| 98 | /* If this isn't going to be placed on both the stack and in registers, | |
| 99 | @@ -4579,6 +4587,11 @@ store_one_arg (arg, argblock, flags, var | |
| 100 | arg->value = arg->stack_slot; | |
| 101 | } | |
| 102 | ||
| 103 | + if (ACCUMULATE_OUTGOING_ARGS && !(flags & ECF_SIBCALL) | |
| 104 | + && argblock && ! variable_size && arg->stack) | |
| 105 | + for (i = lower_bound; i < upper_bound; i++) | |
| 106 | + stack_usage_map[i] = 1; | |
| 107 | + | |
| 108 | /* Once we have pushed something, pops can't safely | |
| 109 | be deferred during the rest of the arguments. */ | |
| 110 | NO_DEFER_POP; |