Re: [r17-603 Regression] FAIL: g++.dg/opt/shrink-wrapping-vector-1.C -std=gnu++98 scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping" on Linux/x86_64
Jakub Jelinek via Gcc-regression <[email protected]>
| Newsgroups | gmane.comp.gcc.regression,gmane.comp.gcc.patches |
|---|---|
| Message-ID | <ag6pmSCb7GTt3dY0@tucnak> |
On Wed, May 20, 2026 at 06:58:10PM -0700, Andrew Pinski wrote: > On Tue, May 19, 2026 at 10:09 PM Haochen Jiang <[email protected]> wrote: > > > > On Linux/x86_64, > > > > acfdad706d8acca6c4ed6ef3b63c2e02f1c47881 is the first bad commit > > commit acfdad706d8acca6c4ed6ef3b63c2e02f1c47881 > > Author: Nathan Myers <[email protected]> > > Date: Fri Apr 3 23:55:39 2026 -0400 > > > > libstdc++: Use allocate_at_least in vector, string (P0401) [PR118030] > > > > caused > > > > FAIL: g++.dg/opt/shrink-wrapping-vector-1.C -std=gnu++98 scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping" > > I filed https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125400 for the > missed optimization which is causing the missed shrink wrapping. > If I can figure out how to xfail it for C++98 only I will unless > someone beats me to it. Note It fails on all the specified targets in > the testcase as it is generic issue. It is actually not C++98 only. I see FAIL: g++.dg/opt/shrink-wrapping-vector-1.C -std=gnu++11 scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping" FAIL: g++.dg/opt/shrink-wrapping-vector-1.C -std=gnu++14 scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping" FAIL: g++.dg/opt/shrink-wrapping-vector-1.C -std=gnu++17 scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping" FAIL: g++.dg/opt/shrink-wrapping-vector-1.C -std=gnu++98 scan-rtl-dump pro_and_epilogue "Performing shrink-wrapping" (I'm always testing with GXX_TESTSUITE_STDS=98,11,14,17,20,23,26 ) so { xfail c++17_down } would do the job I think. Jakub