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reorg.c (dbr_schedule): Allow current_function_return_rtx to be something other than a REG.

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* reorg.c (dbr_schedule): Allow current_function_return_rtx
        to be something other than a REG.
        * function.c (expand_function_end): Fix current_function_return_rtx
        if it was a pseudo.
Brought over from the fsf/devo.

From-SVN: r14972
This commit is contained in:
Jeffrey A Law 1997-08-27 19:59:51 +00:00 committed by Jeff Law
parent 67f68fd265
commit f345de42fc
3 changed files with 15 additions and 6 deletions
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5
gcc/ChangeLog
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@ -29,6 +29,11 @@ Wed Aug 27 01:24:25 1997 H.J. Lu (hjl@gnu.ai.mit.edu)
Wed Aug 27 00:49:14 1997 Jeffrey A Law (law@cygnus.com)
* reorg.c (dbr_schedule): Allow current_function_return_rtx
to be something other than a REG.
* function.c (expand_function_end): Fix current_function_return_rtx
if it was a pseudo.
* t-freebsd (USER_H): Include EXTRA_HEADERS and LANG_EXTRA_HEADERS.
* x-netbsd: Likewise
* x-dgux (USER_H): Include EXTRA_HEADERS and LANG_EXTRA_HEADERS

13
gcc/function.c
View File

@ -191,10 +191,10 @@ CUMULATIVE_ARGS current_function_args_info;
char *current_function_name;
/* If non-zero, an RTL expression for that location at which the current
function returns its result. Always equal to
DECL_RTL (DECL_RESULT (current_function_decl)), but provided
independently of the tree structures. */
/* If non-zero, an RTL expression for the location at which the current
function returns its result. If the current function returns its
result in a register, current_function_return_rtx will always be
the hard register containing the result. */
rtx current_function_return_rtx;
@ -5692,6 +5692,11 @@ expand_function_end (filename, line, end_bindings)
emit_move_insn (real_decl_result,
DECL_RTL (DECL_RESULT (current_function_decl)));
emit_insn (gen_rtx (USE, VOIDmode, real_decl_result));
/* The delay slot scheduler assumes that current_function_return_rtx
holds the hard register containing the return value, not a temporary
pseudo. */
current_function_return_rtx = real_decl_result;
}
/* If returning a structure, arrange to return the address of the value

3
gcc/reorg.c
View File

@ -4492,8 +4492,7 @@ dbr_schedule (first, file)
else
SET_HARD_REG_BIT (end_of_function_needs.regs, STACK_POINTER_REGNUM);
if (current_function_return_rtx != 0
&& GET_CODE (current_function_return_rtx) == REG)
if (current_function_return_rtx != 0)
mark_referenced_resources (current_function_return_rtx,
&end_of_function_needs, 1);