Revert "Reenable opt-level 3" #42123
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This reverts commit 30383b2.
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@bors: r+ p=1 Let's see if this prevents the segfaults, and if so we can chalk it up to LLVM but if not we can revert this PR and keep investigating. |
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📌 Commit 409d40f has been approved by |
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⌛ Testing commit 409d40f with merge 1cda810... |
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Revert "Reenable opt-level 3" This reverts commit 30383b2, from #41967. We believe that this is causing the failures when compiling rustc on 64 bit (which are probably segfaults). cc @ishitatsuyuki
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☀️ Test successful - status-appveyor, status-travis |
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Set opt-level = 3 the third time. This PR reverts #51165 (set -O2 to fix #50867), which reverted #50329 (set -O3), which was second attempt of #48204 (set -O3, closed due to Windows segfault that is fixed now), which reverted #42123 (set -O2 to fix spurious Windows segfaults), which reverted #41967 (set -O3). Last time we've found that setting -O3 regressed the wall time of NLL (#50329 (comment)), so we may need another perf run to confirm. I'd like to check this *after* the LLVM 7 upgrade #51966 has been merged, so marking this as <kbd>S-blocked</kbd> for now.
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Set opt-level = 3 the third time. This PR reverts #51165 (set -O2 for fixing #50867), which reverted #50329 (set -O3), which was second attempt of #48204 (set -O3, closed due to Windows segfault that is fixed now), which reverted #42123 (set -O2 to fix spurious Windows segfaults), which reverted #41967 (set -O3). Since we have found the root cause of #50867, this optimization could be tried again. Last time we've found that setting -O3 regressed the wall time of NLL (#50329 (comment)), so we may need another perf run to confirm. I'd like to check this *after* the LLVM 7 upgrade #51966 has been merged, so marking this as <kbd>S-blocked</kbd> for now.
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This reverts commit 30383b2, from #41967.
We believe that this is causing the failures when compiling rustc on 64 bit (which are probably segfaults).
cc @ishitatsuyuki