------- Comment #6 from hutchinsonandy at aim dot com 2008-04-02 15:44 ------- Subject: Re: [4.3 Regression] fwprop only propagates one operand
Eric, it's difficult to give you a specfic example as the propagation is very sensitive to generated code. I found this looking at other AVR bugs and discovered it was not working. (I'll look up that example latter for you). It not an obvious thing as other (good) changes due to DF merge, re-arrange code enough to obscure the omission. But the result is an extra move or redundant instruction here and there. (its also not at all specfic to AVR) Andy -----Original Message----- From: eric dot weddington at atmel dot com <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Sent: Wed, 2 Apr 2008 10:21 am Subject: [Bug rtl-optimization/35542] [4.3 Regression] fwprop only propagates one operand ------- Comment #4 from eric dot weddington at atmel dot com 2008-04-02 15:21 ------- (In reply to comment #3) > committed to trunk, will backport to 4.3 in due time (causes regressions for > AVR) > Could you list what fails? Thanks! -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35542 ------- You are receiving this mail because: ------- You reported the bug, or are watching the reporter. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35542
