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re PR rtl-optimization/26087 (ICE in df_find_use)

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PR rtl-optimization/26087
	* rtlanal.c (canonicalize_condition): Do not cross basic block
	boundaries.

From-SVN: r110614
This commit is contained in:
Zdenek Dvorak 2006-02-05 15:58:07 +01:00 • committed by Zdenek Dvorak
parent 93638ec794
commit 569f8d982a
2 changed files with 12 additions and 1 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2006-02-04 Zdenek Dvorak <dvorakz@suse.cz>
PR rtl-optimization/26087
* rtlanal.c (canonicalize_condition): Do not cross basic block
boundaries.
2006-02-04 Alexandre Oliva <aoliva@redhat.com>
PR debug/24444

7
gcc/rtlanal.c
View file

@ -4508,6 +4508,7 @@ canonicalize_condition (rtx insn, rtx cond, int reverse, rtx *earliest,
rtx op0, op1;
int reverse_code = 0;
enum machine_mode mode;
basic_block bb = BLOCK_FOR_INSN (insn);
code = GET_CODE (cond);
mode = GET_MODE (cond);
@ -4569,7 +4570,11 @@ canonicalize_condition (rtx insn, rtx cond, int reverse, rtx *earliest,
if ((prev = prev_nonnote_insn (prev)) == 0
|| !NONJUMP_INSN_P (prev)
|| FIND_REG_INC_NOTE (prev, NULL_RTX))
|| FIND_REG_INC_NOTE (prev, NULL_RTX)
/* In cfglayout mode, there do not have to be labels at the
beginning of a block, or jumps at the end, so the previous
conditions would not stop us when we reach bb boundary. */
|| BLOCK_FOR_INSN (prev) != bb)
break;
set = set_of (op0, prev);