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(record_biv): Clear total_benefit field of new iv_class. 

(get_condition): Verify op 2 of source is label_ref before looking within.

From-SVN: r2566
This commit is contained in:
Richard Stallman 1992-10-23 06:02:13 +00:00
parent b76771897a
commit b5d27be7d7
1 changed files with 3 additions and 1 deletions
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4
gcc/loop.c
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@ -4122,6 +4122,7 @@ record_biv (v, insn, dest_reg, inc_val, mult_val,
bl->eliminable = 0;
bl->nonneg = 0;
bl->reversed = 0;
bl->total_benefit = 0;
/* Add this class to loop_iv_list. */
bl->next = loop_iv_list;
@ -6255,7 +6256,8 @@ get_condition (jump, earliest)
/* If this branches to JUMP_LABEL when the condition is false, reverse
the condition. */
if (XEXP (XEXP (SET_SRC (PATTERN (jump)), 2), 0) == JUMP_LABEL (jump))
if (GET_CODE (XEXP (SET_SRC (PATTERN (jump)), 2)) == LABEL_REF
&& XEXP (XEXP (SET_SRC (PATTERN (jump)), 2), 0) == JUMP_LABEL (jump))
code = reverse_condition (code), did_reverse_condition ^= 1;
/* If we are comparing a register with zero, see if the register is set