diff options
Diffstat (limited to 'gcc/unroll.c')
| -rw-r--r-- | gcc/unroll.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/gcc/unroll.c b/gcc/unroll.c index 518e4a1168e..9ba2e916d93 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -1,6 +1,6 @@ /* Try to unroll loops, and split induction variables. Copyright (C) 1992, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2001, - 2002, 2003 + 2002, 2003, 2004 Free Software Foundation, Inc. Contributed by James E. Wilson, Cygnus Support/UC Berkeley. @@ -2872,7 +2872,6 @@ static int reg_dead_after_loop (const struct loop *loop, rtx reg) { rtx insn, label; - enum rtx_code code; int jump_count = 0; int label_count = 0; @@ -2902,8 +2901,7 @@ reg_dead_after_loop (const struct loop *loop, rtx reg) insn = NEXT_INSN (XEXP (label, 0)); while (insn) { - code = GET_CODE (insn); - if (GET_RTX_CLASS (code) == 'i') + if (INSN_P (insn)) { rtx set, note; @@ -2917,18 +2915,18 @@ reg_dead_after_loop (const struct loop *loop, rtx reg) set = single_set (insn); if (set && rtx_equal_p (SET_DEST (set), reg)) break; - } - if (code == JUMP_INSN) - { - if (GET_CODE (PATTERN (insn)) == RETURN) - break; - else if (!any_uncondjump_p (insn) - /* Prevent infinite loop following infinite loops. */ - || jump_count++ > 20) - return 0; - else - insn = JUMP_LABEL (insn); + if (GET_CODE (insn) == JUMP_INSN) + { + if (GET_CODE (PATTERN (insn)) == RETURN) + break; + else if (!any_uncondjump_p (insn) + /* Prevent infinite loop following infinite loops. */ + || jump_count++ > 20) + return 0; + else + insn = JUMP_LABEL (insn); + } } insn = NEXT_INSN (insn); |