OpenE2K/gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

* loop.c (canonicalize_condition): Move to reversed_comparison_code.

Browse Source 
From-SVN: r40019
This commit is contained in:
Jan Hubicka 2001-02-24 03:18:38 +01:00 committed by Jan Hubicka
parent 4f0a3098c5
commit c9212f333a
2 changed files with 17 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
gcc/ChangeLog
View File

@ -1,3 +1,7 @@
Sat Feb 24 03:17:09 CET 2001 Jan Hubicka <jh@suse.cz>
* loop.c (canonicalize_condition): Move to reversed_comparison_code.
2001-02-21 DJ Delorie <dj@redhat.com>
* config/i960/i960.h (FRAME_POINTER_REQUIRED): Revert removal of

36
gcc/loop.c
View File

@ -8305,7 +8305,6 @@ canonicalize_condition (insn, cond, reverse, earliest, want_reg)
rtx tem;
rtx op0, op1;
int reverse_code = 0;
int did_reverse_condition = 0;
enum machine_mode mode;
code = GET_CODE (cond);
@ -8314,10 +8313,9 @@ canonicalize_condition (insn, cond, reverse, earliest, want_reg)
op1 = XEXP (cond, 1);
if (reverse)
{
code = reverse_condition (code);
did_reverse_condition ^= 1;
}
code = reversed_comparison_code (cond, insn);
if (code == UNKNOWN)
return 0;
if (earliest)
*earliest = insn;
@ -8368,13 +8366,19 @@ canonicalize_condition (insn, cond, reverse, earliest, want_reg)
if ((prev = prev_nonnote_insn (prev)) == 0
|| GET_CODE (prev) != INSN
|| FIND_REG_INC_NOTE (prev, 0)
|| (set = single_set (prev)) == 0)
|| FIND_REG_INC_NOTE (prev, 0))
break;
set = set_of (op0, prev);
if (set
&& (GET_CODE (set) != SET
|| !rtx_equal_p (SET_DEST (set), op0)))
break;
/* If this is setting OP0, get what it sets it to if it looks
relevant. */
if (rtx_equal_p (SET_DEST (set), op0))
if (set)
{
enum machine_mode inner_mode = GET_MODE (SET_DEST (set));
@ -8434,10 +8438,6 @@ canonicalize_condition (insn, cond, reverse, earliest, want_reg)
|| mode == VOIDmode || inner_mode == VOIDmode))
{
/* We might have reversed a LT to get a GE here. But this wasn't
actually the comparison of data, so we don't flag that we
have had to reverse the condition. */
did_reverse_condition ^= 1;
reverse_code = 1;
x = SET_SRC (set);
}
@ -8455,10 +8455,9 @@ canonicalize_condition (insn, cond, reverse, earliest, want_reg)
code = GET_CODE (x);
if (reverse_code)
{
code = reverse_condition (code);
code = reversed_comparison_code (x, prev);
if (code == UNKNOWN)
return 0;
did_reverse_condition ^= 1;
reverse_code = 0;
}
@ -8521,15 +8520,6 @@ canonicalize_condition (insn, cond, reverse, earliest, want_reg)
}
}
/* If this was floating-point and we reversed anything other than an
EQ or NE or (UN)ORDERED, return zero. */
if (TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
&& did_reverse_condition
&& code != NE && code != EQ && code != UNORDERED && code != ORDERED
&& ! flag_fast_math
&& GET_MODE_CLASS (GET_MODE (op0)) == MODE_FLOAT)
return 0;
#ifdef HAVE_cc0
/* Never return CC0; return zero instead. */
if (op0 == cc0_rtx)