diff options
Diffstat (limited to 'gcc/rtlanal.c')
| -rw-r--r-- | gcc/rtlanal.c | 61 |
1 files changed, 32 insertions, 29 deletions
diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index b10a3bf3438..b44b9921d6a 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -824,13 +824,14 @@ find_last_value (x, pinsn, valid_to, allow_hwreg) int refers_to_regno_p (regno, endregno, x, loc) - int regno, endregno; + unsigned int regno, endregno; rtx x; rtx *loc; { - register int i; - register RTX_CODE code; - register const char *fmt; + int i; + unsigned int x_regno; + RTX_CODE code; + const char *fmt; repeat: /* The contents of a REG_NONNEG note is always zero, so we must come here @@ -843,22 +844,22 @@ refers_to_regno_p (regno, endregno, x, loc) switch (code) { case REG: - i = REGNO (x); + x_regno = REGNO (x); /* If we modifying the stack, frame, or argument pointer, it will clobber a virtual register. In fact, we could be more precise, but it isn't worth it. */ - if ((i == STACK_POINTER_REGNUM + if ((x_regno == STACK_POINTER_REGNUM #if FRAME_POINTER_REGNUM != ARG_POINTER_REGNUM - || i == ARG_POINTER_REGNUM + || x_regno == ARG_POINTER_REGNUM #endif - || i == FRAME_POINTER_REGNUM) + || x_regno == FRAME_POINTER_REGNUM) && regno >= FIRST_VIRTUAL_REGISTER && regno <= LAST_VIRTUAL_REGISTER) return 1; - return (endregno > i - && regno < i + (i < FIRST_PSEUDO_REGISTER - ? HARD_REGNO_NREGS (i, GET_MODE (x)) + return (endregno > x_regno + && regno < x_regno + (x_regno < FIRST_PSEUDO_REGISTER + ? HARD_REGNO_NREGS (x_regno, GET_MODE (x)) : 1)); case SUBREG: @@ -867,8 +868,8 @@ refers_to_regno_p (regno, endregno, x, loc) if (GET_CODE (SUBREG_REG (x)) == REG && REGNO (SUBREG_REG (x)) < FIRST_PSEUDO_REGISTER) { - int inner_regno = REGNO (SUBREG_REG (x)) + SUBREG_WORD (x); - int inner_endregno + unsigned int inner_regno = REGNO (SUBREG_REG (x)) + SUBREG_WORD (x); + unsigned int inner_endregno = inner_regno + (inner_regno < FIRST_PSEUDO_REGISTER ? HARD_REGNO_NREGS (regno, GET_MODE (x)) : 1); @@ -939,7 +940,7 @@ int reg_overlap_mentioned_p (x, in) rtx x, in; { - int regno, endregno; + unsigned int regno, endregno; /* Overly conservative. */ if (GET_CODE (x) == STRICT_LOW_PART) @@ -1000,7 +1001,7 @@ reg_overlap_mentioned_p (x, in) static int reg_set_last_unknown; static rtx reg_set_last_value; -static int reg_set_last_first_regno, reg_set_last_last_regno; +static unsigned int reg_set_last_first_regno, reg_set_last_last_regno; /* Called via note_stores from reg_set_last. */ @@ -1010,7 +1011,7 @@ reg_set_last_1 (x, pat, data) rtx pat; void *data ATTRIBUTE_UNUSED; { - int first, last; + unsigned int first, last; /* If X is not a register, or is not one in the range we care about, ignore. */ @@ -1149,6 +1150,7 @@ note_stores (x, fun, data) && GET_MODE (dest) == BLKmode) { register int i; + for (i = XVECLEN (dest, 0) - 1; i >= 0; i--) (*fun) (SET_DEST (XVECEXP (dest, 0, i)), y, data); } @@ -1181,8 +1183,8 @@ dead_or_set_p (insn, x) rtx insn; rtx x; { - register int regno, last_regno; - register int i; + unsigned int regno, last_regno; + unsigned int i; /* Can't use cc0_rtx below since this file is used by genattrtab.c. */ if (GET_CODE (x) == CC0) @@ -1208,9 +1210,9 @@ dead_or_set_p (insn, x) int dead_or_set_regno_p (insn, test_regno) rtx insn; - int test_regno; + unsigned int test_regno; { - int regno, endregno; + unsigned int regno, endregno; rtx link; /* See if there is a death note for something that includes @@ -1323,7 +1325,7 @@ rtx find_regno_note (insn, kind, regno) rtx insn; enum reg_note kind; - int regno; + unsigned int regno; { register rtx link; @@ -1376,15 +1378,16 @@ find_reg_fusage (insn, code, datum) } else { - register int regno = REGNO (datum); + unsigned int regno = REGNO (datum); /* CALL_INSN_FUNCTION_USAGE information cannot contain references to pseudo registers, so don't bother checking. */ if (regno < FIRST_PSEUDO_REGISTER) { - int end_regno = regno + HARD_REGNO_NREGS (regno, GET_MODE (datum)); - int i; + unsigned int end_regno + = regno + HARD_REGNO_NREGS (regno, GET_MODE (datum)); + unsigned int i; for (i = regno; i < end_regno; i++) if (find_regno_fusage (insn, code, i)) @@ -1402,7 +1405,7 @@ int find_regno_fusage (insn, code, regno) rtx insn; enum rtx_code code; - int regno; + unsigned int regno; { register rtx link; @@ -1415,8 +1418,8 @@ find_regno_fusage (insn, code, regno) for (link = CALL_INSN_FUNCTION_USAGE (insn); link; link = XEXP (link, 1)) { - register int regnote; - register rtx op, reg; + unsigned int regnote; + rtx op, reg; if (GET_CODE (op = XEXP (link, 0)) == code && GET_CODE (reg = XEXP (op, 0)) == REG @@ -1889,7 +1892,7 @@ rtx replace_regs (x, reg_map, nregs, replace_dest) rtx x; rtx *reg_map; - int nregs; + unsigned int nregs; int replace_dest; { register enum rtx_code code; @@ -2165,7 +2168,7 @@ for_each_rtx (x, f, data) rtx regno_use_in (regno, x) - int regno; + unsigned int regno; rtx x; { register const char *fmt; |