[Bug rtl-optimization/17482] [4.0 Regression] GCSE after reload replacing changing instructions

[dje at watson dot ibm dot com]

------- Additional Comments From dje at watson dot ibm dot com  2004-09-15 15:27 -------
Subject: Re:  GCSE after reload replacing changing instructions 

>>>>> steven at gcc dot gnu dot org writes:

steven> oprs_unchanged_p (PATTERN(insn 112), insn 112, false) 
steven> should return false for insn 112.  Does it? 
 
	No, it returns true.  It records that r29 changed during the
earlier analysis, but that information is cleared by the time it is called
with after_insn=false.

David


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17482