Re: [PATCH] Keep REG_INC note in subreg2 pass

2013-10-30 Thread Zhenqiang Chen
On 31 October 2013 00:08, Jeff Law wrote: > On 10/30/13 00:09, Zhenqiang Chen wrote: >> >> On 30 October 2013 02:47, Jeff Law wrote: >>> >>> On 10/24/13 02:20, Zhenqiang Chen wrote: Hi, REG_INC note is lost in subreg2 pass when resolve_simple_move, which might lead t

Re: [PATCH] Keep REG_INC note in subreg2 pass

2013-10-30 Thread Jeff Law
On 10/30/13 00:09, Zhenqiang Chen wrote: On 30 October 2013 02:47, Jeff Law wrote: On 10/24/13 02:20, Zhenqiang Chen wrote: Hi, REG_INC note is lost in subreg2 pass when resolve_simple_move, which might lead to wrong dependence for ira. e.g. In function validate_equiv_mem of ira.c, it checks

Re: [PATCH] Keep REG_INC note in subreg2 pass

2013-10-29 Thread Zhenqiang Chen
On 30 October 2013 02:47, Jeff Law wrote: > On 10/24/13 02:20, Zhenqiang Chen wrote: >> >> Hi, >> >> REG_INC note is lost in subreg2 pass when resolve_simple_move, which >> might lead to wrong dependence for ira. e.g. In function >> validate_equiv_mem of ira.c, it checks REG_INC note: >> >>

Re: [PATCH] Keep REG_INC note in subreg2 pass

2013-10-29 Thread Jeff Law
On 10/24/13 02:20, Zhenqiang Chen wrote: Hi, REG_INC note is lost in subreg2 pass when resolve_simple_move, which might lead to wrong dependence for ira. e.g. In function validate_equiv_mem of ira.c, it checks REG_INC note: for (note = REG_NOTES (insn); note; note = XEXP (note, 1))