diff options
Diffstat (limited to 'gcc/jump.c')
| -rw-r--r-- | gcc/jump.c | 53 |
1 files changed, 1 insertions, 52 deletions
@@ -400,7 +400,7 @@ reversed_comparison_code_parts (enum rtx_code code, const_rtx arg0, break; } - if (GET_MODE_CLASS (mode) == MODE_CC || CC0_P (arg0)) + if (GET_MODE_CLASS (mode) == MODE_CC) { /* Try to search for the comparison to determine the real mode. This code is expensive, but with sane machine description it @@ -1008,55 +1008,6 @@ jump_to_label_p (const rtx_insn *insn) return (JUMP_P (insn) && JUMP_LABEL (insn) != NULL && !ANY_RETURN_P (JUMP_LABEL (insn))); } - -/* Return nonzero if X is an RTX that only sets the condition codes - and has no side effects. */ - -int -only_sets_cc0_p (const_rtx x) -{ - if (! x) - return 0; - - if (INSN_P (x)) - x = PATTERN (x); - - return sets_cc0_p (x) == 1 && ! side_effects_p (x); -} - -/* Return 1 if X is an RTX that does nothing but set the condition codes - and CLOBBER or USE registers. - Return -1 if X does explicitly set the condition codes, - but also does other things. */ - -int -sets_cc0_p (const_rtx x) -{ - if (! x) - return 0; - - if (INSN_P (x)) - x = PATTERN (x); - - if (GET_CODE (x) == SET && SET_DEST (x) == cc0_rtx) - return 1; - if (GET_CODE (x) == PARALLEL) - { - int i; - int sets_cc0 = 0; - int other_things = 0; - for (i = XVECLEN (x, 0) - 1; i >= 0; i--) - { - if (GET_CODE (XVECEXP (x, 0, i)) == SET - && SET_DEST (XVECEXP (x, 0, i)) == cc0_rtx) - sets_cc0 = 1; - else if (GET_CODE (XVECEXP (x, 0, i)) == SET) - other_things = 1; - } - return ! sets_cc0 ? 0 : other_things ? -1 : 1; - } - return 0; -} /* Find all CODE_LABELs referred to in X, and increment their use counts. If INSN is a JUMP_INSN and there is at least one @@ -1101,7 +1052,6 @@ mark_jump_label_1 (rtx x, rtx_insn *insn, bool in_mem, bool is_target) switch (code) { case PC: - case CC0: case REG: case CLOBBER: case CALL: @@ -1771,7 +1721,6 @@ rtx_renumbered_equal_p (const_rtx x, const_rtx y) switch (code) { case PC: - case CC0: case ADDR_VEC: case ADDR_DIFF_VEC: CASE_CONST_UNIQUE: |