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| author | Jan Hubicka <jh@suse.cz> | 2001-01-08 16:16:40 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-01-08 15:16:40 +0000 |
| commit | 261efdefd067fbb10979f662f9fe0a3da986d2b5 (patch) | |
| tree | 3ffcebd198ac0745cfb083cc4d096b8c14b9273d /gcc/simplify-rtx.c | |
| parent | 3febd12318b0cdef645012bbce9cf85e4e4d80ed (diff) | |
| download | gcc-261efdefd067fbb10979f662f9fe0a3da986d2b5.zip gcc-261efdefd067fbb10979f662f9fe0a3da986d2b5.tar.gz gcc-261efdefd067fbb10979f662f9fe0a3da986d2b5.tar.bz2 | |
jump.c (jump_optimize_1): Use reversed_comparison_code instead of can_reverse_comparison_p.
* jump.c (jump_optimize_1): Use reversed_comparison_code
instead of can_reverse_comparison_p.
(jump_back_p): Likewise.
(invert_exp_1): Likewise.
(thread_jumps): Likewise.
* simplify-rtx.c (simplify_unary_operation): Likewise.
(simplify_ternary_operation): Likewise.
* cse.c (find_comparison_args): Convert to use
can_reverse_comparison_p.
(record_jump_equiv): Likewise.
From-SVN: r38802
Diffstat (limited to 'gcc/simplify-rtx.c')
| -rw-r--r-- | gcc/simplify-rtx.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index a3a1bfe..9b0f798 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -584,6 +584,7 @@ simplify_unary_operation (code, mode, op, op_mode) eggert@twinsun.com says it is safe for IEEE also. */ else { + enum rtx_code reversed; /* There are some simplifications we can do even if the operands aren't constant. */ switch (code) @@ -595,8 +596,9 @@ simplify_unary_operation (code, mode, op, op_mode) /* (not (eq X Y)) == (ne X Y), etc. */ if (mode == BImode && GET_RTX_CLASS (GET_CODE (op)) == '<' - && can_reverse_comparison_p (op, NULL_RTX)) - return gen_rtx_fmt_ee (reverse_condition (GET_CODE (op)), + && ((reversed = reversed_comparison_code (op, NULL_RTX)) + != UNKNOWN)) + return gen_rtx_fmt_ee (reversed, op_mode, XEXP (op, 0), XEXP (op, 1)); break; @@ -2075,9 +2077,14 @@ simplify_ternary_operation (code, mode, op0_mode, op0, op1, op2) if (t == STORE_FLAG_VALUE && f == 0) code = GET_CODE (op0); - else if (t == 0 && f == STORE_FLAG_VALUE - && can_reverse_comparison_p (op0, NULL_RTX)) - code = reverse_condition (GET_CODE (op0)); + else if (t == 0 && f == STORE_FLAG_VALUE) + { + enum rtx_code tmp; + tmp = reversed_comparison_code (op0, NULL_RTX); + if (tmp == UNKNOWN) + break; + code = tmp; + } else break; |