diff options
Diffstat (limited to 'gcc')
| -rwxr-xr-x | gcc/expr.c | 19 | ||||
| -rwxr-xr-x | gcc/expr.h | 4 | ||||
| -rwxr-xr-x | gcc/flow.c | 35 | ||||
| -rwxr-xr-x | gcc/function.c | 9 | ||||
| -rwxr-xr-x | gcc/resource.c | 18 | ||||
| -rwxr-xr-x | gcc/stmt.c | 2 |
6 files changed, 11 insertions, 76 deletions
@@ -10316,25 +10316,6 @@ init_pending_stack_adjust () pending_stack_adjust = 0; } -/* When exiting from function, if safe, clear out any pending stack adjust - so the adjustment won't get done. - - Note, if the current function calls alloca, then it must have a - frame pointer regardless of the value of flag_omit_frame_pointer. */ - -void -clear_pending_stack_adjust () -{ -#ifdef EXIT_IGNORE_STACK - if (optimize > 0 - && (! flag_omit_frame_pointer || current_function_calls_alloca) - && EXIT_IGNORE_STACK - && ! (DECL_INLINE (current_function_decl) && ! flag_no_inline) - && ! flag_inline_functions) - pending_stack_adjust = 0; -#endif -} - /* Pop any previously-pushed arguments that have not been popped yet. */ void @@ -830,10 +830,6 @@ extern rtx expand_expr PROTO((tree, rtx, enum machine_mode, arguments waiting to be popped. */ extern void init_pending_stack_adjust PROTO((void)); -/* When exiting from function, if safe, clear out any pending stack adjust - so the adjustment won't get done. */ -extern void clear_pending_stack_adjust PROTO((void)); - /* Pop any previously-pushed arguments that have not been popped yet. */ extern void do_pending_stack_adjust PROTO((void)); @@ -1336,15 +1336,7 @@ mark_regs_live_at_end (set) { int i; -#ifdef EXIT_IGNORE_STACK - if (! EXIT_IGNORE_STACK - || (! FRAME_POINTER_REQUIRED - && ! current_function_calls_alloca - && flag_omit_frame_pointer) - || current_function_sp_is_unchanging) -#endif - /* If exiting needs the right stack value, - consider the stack pointer live at the end of the function. */ + /* Consider the stack pointer live at the end of the function. */ SET_REGNO_REG_SET (set, STACK_POINTER_REGNUM); /* Mark the frame pointer is needed at the end of the function. If @@ -1358,11 +1350,7 @@ mark_regs_live_at_end (set) as being live at the end of the function since they may be referenced by our caller. */ for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) - if (global_regs[i] -#ifdef EPILOGUE_USES - || EPILOGUE_USES (i) -#endif - ) + if (global_regs[i]) SET_REGNO_REG_SET (set, i); } @@ -3031,25 +3019,12 @@ mark_used_regs (needed, live, x, final, insn) break; case RETURN: - /* If exiting needs the right stack value, consider this insn as - using the stack pointer. In any event, consider it as using - all global registers and all registers used by return. */ - -#ifdef EXIT_IGNORE_STACK - if (! EXIT_IGNORE_STACK - || (! FRAME_POINTER_REQUIRED - && ! current_function_calls_alloca - && flag_omit_frame_pointer) - || current_function_sp_is_unchanging) -#endif + /* Consider this insn as using the stack pointer, all global registers + and all registers used by return. */ SET_REGNO_REG_SET (live, STACK_POINTER_REGNUM); for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) - if (global_regs[i] -#ifdef EPILOGUE_USES - || EPILOGUE_USES (i) -#endif - ) + if (global_regs[i]) SET_REGNO_REG_SET (live, i); break; diff --git a/gcc/function.c b/gcc/function.c index 4da2f41..bb08b18 100755 --- a/gcc/function.c +++ b/gcc/function.c @@ -6162,7 +6162,6 @@ expand_function_end (filename, line, end_bindings) use_variable (current_function_internal_arg_pointer); } - clear_pending_stack_adjust (); do_pending_stack_adjust (); /* Mark the end of the function body. @@ -6220,12 +6219,8 @@ expand_function_end (filename, line, end_bindings) Pmode); } - /* If we had calls to alloca, and this machine needs - an accurate stack pointer to exit the function, - insert some code to save and restore the stack pointer. */ -#ifdef EXIT_IGNORE_STACK - if (! EXIT_IGNORE_STACK) -#endif + /* If we had calls to alloca, insert some code to save and restore the + stack pointer. */ if (current_function_calls_alloca) { rtx tem = 0; diff --git a/gcc/resource.c b/gcc/resource.c index 56ca933..d874d52 100755 --- a/gcc/resource.c +++ b/gcc/resource.c @@ -1071,9 +1071,8 @@ init_resource_info (epilogue_insn) /* Indicate what resources are required to be valid at the end of the current function. The condition code never is and memory always is. If the - frame pointer is needed, it is and so is the stack pointer unless - EXIT_IGNORE_STACK is non-zero. If the frame pointer is not needed, the - stack pointer is. Registers used to return the function value are + frame pointer is needed, it is. The stack pointer is needed. + Registers used to return the function value are needed. Registers holding global variables are needed. */ end_of_function_needs.cc = 0; @@ -1084,13 +1083,8 @@ init_resource_info (epilogue_insn) if (frame_pointer_needed) { SET_HARD_REG_BIT (end_of_function_needs.regs, FRAME_POINTER_REGNUM); -#ifdef EXIT_IGNORE_STACK - if (! EXIT_IGNORE_STACK - || current_function_sp_is_unchanging) -#endif - SET_HARD_REG_BIT (end_of_function_needs.regs, STACK_POINTER_REGNUM); } - else + SET_HARD_REG_BIT (end_of_function_needs.regs, STACK_POINTER_REGNUM); if (current_function_return_rtx != 0) @@ -1098,11 +1092,7 @@ init_resource_info (epilogue_insn) &end_of_function_needs, 1); for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) - if (global_regs[i] -#ifdef EPILOGUE_USES - || EPILOGUE_USES (i) -#endif - ) + if (global_regs[i]) SET_HARD_REG_BIT (end_of_function_needs.regs, i); /* The registers required to be live at the end of the function are @@ -777,7 +777,6 @@ expand_goto_internal (body, label, last_insn) /* Ensure stack adjust isn't done by emit_jump, as this would clobber the stack pointer. This one should be deleted as dead by flow. */ - clear_pending_stack_adjust (); do_pending_stack_adjust (); emit_stack_restore (SAVE_BLOCK, stack_level, NULL_RTX); } @@ -2459,7 +2458,6 @@ expand_null_return_1 (last_insn, use_goto) { rtx end_label = cleanup_label ? cleanup_label : return_label; - clear_pending_stack_adjust (); do_pending_stack_adjust (); last_expr_type = 0; |