https://github.com/HaohaiWen edited
https://github.com/llvm/llvm-project/pull/77608
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https://github.com/HaohaiWen updated
https://github.com/llvm/llvm-project/pull/77608
>From 80a650763278061630e6ff5635bbc3a2dacc093e Mon Sep 17 00:00:00 2001
From: Haohai Wen
Date: Wed, 10 Jan 2024 16:09:00 +0800
Subject: [PATCH 1/4] [BranchFolding][SEH] Add test to track SEH CFG
optimization
https://github.com/phoebewang edited
https://github.com/llvm/llvm-project/pull/77608
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phoebewang wrote:
> > > This keeps CFG as only have one entry which is required by LiveDebugValues
> >
> >
> > If we just want to make LiveDebugValues happy, should it better to remove
> > these died BB instead?
>
> This died BB was already removed by BranchFolder. See rebased test diff. We
@@ -1363,6 +1363,14 @@ bool BranchFolder::OptimizeBlock(MachineBasicBlock *MBB)
{
MachineBasicBlock *Pred = *(MBB->pred_end()-1);
Pred->ReplaceUsesOfBlockWith(MBB, &*FallThrough);
}
+ // Add rest successors of MBB to successors of FallThrough. Those
