diff options
Diffstat (limited to 'gcc/stmt.c')
| -rw-r--r-- | gcc/stmt.c | 28 |
1 files changed, 8 insertions, 20 deletions
@@ -2665,7 +2665,13 @@ void expand_null_return () { struct nesting *block = block_stack; - rtx last_insn = 0; + rtx last_insn = get_last_insn (); + + /* If this function was declared to return a value, but we + didn't, clobber the return registers so that they are not + propogated live to the rest of the function. */ + + diddle_return_value (CLOBBER); /* Does any pending block have cleanups? */ @@ -2710,25 +2716,7 @@ expand_value_return (val) emit_move_insn (return_reg, val); } - if (GET_CODE (return_reg) == REG - && REGNO (return_reg) < FIRST_PSEUDO_REGISTER) - emit_insn (gen_rtx_USE (VOIDmode, return_reg)); - - /* Handle calls that return values in multiple non-contiguous locations. - The Irix 6 ABI has examples of this. */ - else if (GET_CODE (return_reg) == PARALLEL) - { - int i; - - for (i = 0; i < XVECLEN (return_reg, 0); i++) - { - rtx x = XEXP (XVECEXP (return_reg, 0, i), 0); - - if (GET_CODE (x) == REG - && REGNO (x) < FIRST_PSEUDO_REGISTER) - emit_insn (gen_rtx_USE (VOIDmode, x)); - } - } + diddle_return_value (USE); /* Does any pending block have cleanups? */ |