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zj (ZhouJing)
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Aug 30 2023, 11:43 PM (13 w, 4 d)

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Sep 14 2023

zj added a comment to D159289: [BOLT] Fix deadloop bug in taildup.
In D159289#4646156, @maksfb wrote:

Thanks! Do you have the commit access? Before committing, please re-title using all-caps "[BOLT]" and follow the "50-72" rule (50-character wide title, 72 for the summary).

Sep 14 2023, 7:04 PM · Restricted Project, Restricted Project, Restricted Project
zj retitled D159289: [BOLT] Fix deadloop bug in taildup from [Bolt]Tail Duplication: fix deadloop bug due to using the --tail-duplication=aggressive option of llvm-bolt to [BOLT] Fix deadloop bug in taildup.
Sep 14 2023, 7:01 PM · Restricted Project, Restricted Project, Restricted Project

Sep 12 2023

zj added a comment to D159289: [BOLT] Fix deadloop bug in taildup.
In D159289#4643690, @maksfb wrote:

Hi @zj, thank you for the test case and for the fix! It looks good to me. Could you please merge the new test case into bolt/test/X86/tail-duplication-pass.s?

Sep 12 2023, 3:55 AM · Restricted Project, Restricted Project, Restricted Project
zj updated the diff for D159289: [BOLT] Fix deadloop bug in taildup.

Merge the testcase.

Sep 12 2023, 3:52 AM · Restricted Project, Restricted Project, Restricted Project

Sep 7 2023

zj added a comment to D159289: [BOLT] Fix deadloop bug in taildup.

ping

Sep 7 2023, 7:36 PM · Restricted Project, Restricted Project, Restricted Project

Aug 31 2023

zj added a comment to D159289: [BOLT] Fix deadloop bug in taildup.

Hello, everyone! I encountered an deadloop problem due to llvm-bolt optimaization of tail-duplication pass. I used an exsiting test case to repeat the problem.
Look at the following simple example (from the bolt/test/X86/tail-duplication-pass.s）

# REQUIRES: system-linux
Aug 31 2023, 8:44 AM · Restricted Project, Restricted Project, Restricted Project
zj requested review of D159289: [BOLT] Fix deadloop bug in taildup.
Aug 31 2023, 8:34 AM · Restricted Project, Restricted Project, Restricted Project