commit 9c6f32a0ffd648f9ac1a976397c999aa1d50e48b
author Jun Ma <JunMa@linux.alibaba.com> Fri Apr 03 09:20:07 2020 +0800
committer Jun Ma <JunMa@linux.alibaba.com> Fri Apr 03 09:20:07 2020 +0800
tree ccfd8708b1c24401f2aab44c0e4295eb0ea12e35
parent aef0877b1ba5f14eaeece956aa69df6c208b94de

[Coroutines] Simplify implementation using removePredecessor

Differential Revision: https://reviews.llvm.org/D77035

llvm/lib/Transforms/Coroutines/CoroSplit.cpp

diff --git a/llvm/lib/Transforms/Coroutines/CoroSplit.cpp b/llvm/lib/Transforms/Coroutines/CoroSplit.cpp
index 2133caa..96c888d 100644
--- a/llvm/lib/Transforms/Coroutines/CoroSplit.cpp
+++ b/llvm/lib/Transforms/Coroutines/CoroSplit.cpp
@@ -941,11 +941,7 @@
         // If InitialInst is an unconditional branch,
         // remove PHI values that come from basic block of InitialInst
         if (UnconditionalSucc)
-          for (PHINode &PN : UnconditionalSucc->phis()) {
-            int idx = PN.getBasicBlockIndex(InitialInst->getParent());
-            if (idx != -1)
-              PN.removeIncomingValue(idx);
-          }
+          UnconditionalSucc->removePredecessor(InitialInst->getParent(), true);
         ReplaceInstWithInst(InitialInst, I->clone());
       }
       return true;