<html><body><p><font size="2">Hal, Matthias,</font><br><br><font size="2">Committed in </font><a href="https://reviews.llvm.org/rL309849"><font size="2">https://reviews.llvm.org/rL309849</font></a><font size="2">.</font><br><font size="2">Thank you so much for your reviews.</font><br><br><tt><font size="2">> In the future, please don't commit a non-<br>> trivial change like this without an explicit approval.</font></tt><br><font size="2">Sure.</font><br><font size="2"><br>-----<br>Hiroshi Inoue <inouehrs@jp.ibm.com><br>IBM Research - Tokyo<br></font><br><br><tt><font size="2">Hal Finkel <hfinkel@anl.gov> wrote on 2017/08/02 20:53:12:<br><br>> From: Hal Finkel <hfinkel@anl.gov></font></tt><br><tt><font size="2">> To: Hiroshi 7 Inoue <INOUEHRS@jp.ibm.com>, Hans Wennborg <hans@chromium.org></font></tt><br><tt><font size="2">> Cc: <hwennborg@google.com>, llvm-commits <llvm-<br>> commits@lists.llvm.org>, Matthias Braun <matze@braunis.de></font></tt><br><tt><font size="2">> Date: 2017/08/02 21:04</font></tt><br><tt><font size="2">> Subject: Re: [llvm] r309651 - [StackColoring] Update AliasAnalysis <br>> information in stack coloring pass</font></tt><br><tt><font size="2">> <br>> On 08/02/2017 03:16 AM, Hiroshi 7 Inoue wrote:</font></tt><br><tt><font size="2">> Hi,<br>> <br>> I updated my patch in Phabricator based on comments from Hal and Matthias.<br>> <a href="https://reviews.llvm.org/D35907">https://reviews.llvm.org/D35907</a><br>> <br>> I will commit the new patch if it looks ok for everyone.</font></tt><br><tt><font size="2">> <br>> Please commit the update. In the future, please don't commit a non-<br>> trivial change like this without an explicit approval.<br>> <br>> Thanks again,<br>> Hal<br></font></tt><br><tt><font size="2">> Thank you.<br>> <br>> Hiroshi<br>> <br>> -----<br>> Hiroshi Inoue <inouehrs@jp.ibm.com><br>> IBM Research - Tokyo<br>> <br>> <br>> hwennborg@google.com wrote on 2017/08/02 08:41:33:<br>> <br>> > From: Hans Wennborg <hans@chromium.org><br>> > To: Hal Finkel <hfinkel@anl.gov><br>> > Cc: Matthias Braun <matze@braunis.de>, Hiroshi Inoue <br>> > <inouehrs@jp.ibm.com>, llvm-commits <llvm-commits@lists.llvm.org><br>> > Date: 2017/08/02 08:41<br>> > Subject: Re: [llvm] r309651 - [StackColoring] Update AliasAnalysis <br>> > information in stack coloring pass<br>> > Sent by: hwennborg@google.com<br>> > <br>> > On Tue, Aug 1, 2017 at 10:51 AM, Hal Finkel <hfinkel@anl.gov> wrote:<br>> > ><br>> > > On 08/01/2017 12:38 PM, Matthias Braun wrote:<br>> > ><br>> > > This is going a little fast, given that Hal had raised concerns and the<br>> > > patch went in before he responded (at least it looks like that <br>> in phab). I'd<br>> > > like to hear his opinion first, given that my experience with <br>> alias analysis<br>> > > in LLVM is limited.<br>> > ><br>> > ><br>> > > I'd like to see this in 5.0, however, I just provided a post-commit review<br>> > > and it looks like it will need a small update before merging.<br>> > <br>> > Sounds good. Thanks!<br>> > <br>> > <br>> > <br>> > > On Aug 1, 2017, at 10:15 AM, Hans Wennborg via llvm-commits<br>> > > <llvm-commits@lists.llvm.org> wrote:<br>> > ><br>> > > Matthias, the PR for this was marked as a release blocker for 5.0.<br>> > > What do you think about merging this?<br>> > ><br>> > > On Mon, Jul 31, 2017 at 8:32 PM, Hiroshi Inoue via llvm-commits<br>> > > <llvm-commits@lists.llvm.org> wrote:<br>> > ><br>> > > Author: inouehrs<br>> > > Date: Mon Jul 31 20:32:15 2017<br>> > > New Revision: 309651<br>> > ><br>> > > URL: <a href="http://llvm.org/viewvc/llvm-project?rev=309651&view=rev">http://llvm.org/viewvc/llvm-project?rev=309651&view=rev</a><br>> > > Log:<br>> > > [StackColoring] Update AliasAnalysis information in stack coloring pass<br>> > ><br>> > > Stack coloring pass need to maintain AliasAnalysis information <br>> when merging<br>> > > stack slots of different types.<br>> > > Actually, there is a FIXME comment in StackColoring.cpp<br>> > ><br>> > > // FIXME: In order to enable the use of TBAA when using AA in CodeGen,<br>> > > // we'll also need to update the TBAA nodes in MMOs with values<br>> > > // derived from the merged allocas.<br>> > ><br>> > > But, TBAA has been already enabled in CodeGen without fixing this pass.<br>> > > The incorrect TBAA metadata results in recent failures in <br>> bootstrap test on<br>> > > ppc64le (PR33928) by allowing unsafe instruction scheduling.<br>> > > Although we observed the problem on ppc64le, this is a platform neutral<br>> > > issue.<br>> > ><br>> > > This patch makes the stack coloring pass maintains AliasAnalysis<br>> information<br>> > > when merging multiple stack slots.<br>> > ><br>> > ><br>> > > (This is <a href="https://reviews.llvm.org/D35907">https://reviews.llvm.org/D35907</a>)<br>> > > _______________________________________________<br>> > > llvm-commits mailing list<br>> > > llvm-commits@lists.llvm.org<br>> > > <a href="http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits">http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-commits</a><br>> > ><br>> > ><br>> > ><br>> > > --<br>> > > Hal Finkel<br>> > > Lead, Compiler Technology and Programming Languages<br>> > > Leadership Computing Facility<br>> > > Argonne National Laboratory<br>> > <br></font></tt><br><tt><font size="2">> <br>> -- <br>> Hal Finkel<br>> Lead, Compiler Technology and Programming Languages<br>> Leadership Computing Facility<br>> Argonne National Laboratory</font></tt><BR>
</body></html>