[llvm] [NFC][Pipelines] Extract buildCoroConditionalWrapper (PR #126860)

[Vitaly Buka via llvm-commits]

https://github.com/vitalybuka created https://github.com/llvm/llvm-project/pull/126860

Helper for #126168.

`Phase` will be used in followup patches.


>From 295fcf0c46cc21d69bef8599c0193b0c3ca99e94 Mon Sep 17 00:00:00 2001
From: Vitaly Buka <vitalybuka at google.com>
Date: Tue, 11 Feb 2025 21:58:30 -0800
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Created using spr 1.3.4
---
 llvm/lib/Passes/PassBuilderPipelines.cpp | 22 ++++++++++++++--------
 1 file changed, 14 insertions(+), 8 deletions(-)

diff --git a/llvm/lib/Passes/PassBuilderPipelines.cpp b/llvm/lib/Passes/PassBuilderPipelines.cpp
index 63e70d7e182bd..adb005b5839f5 100644
--- a/llvm/lib/Passes/PassBuilderPipelines.cpp
+++ b/llvm/lib/Passes/PassBuilderPipelines.cpp
@@ -410,6 +410,19 @@ static bool isLTOPreLink(ThinOrFullLTOPhase Phase) {
          Phase == ThinOrFullLTOPhase::FullLTOPreLink;
 }
 
+// Helper to wrap conditionally Coro passes.
+static CoroConditionalWrapper buildCoroWrapper(ThinOrFullLTOPhase Phase) {
+  // TODO: Skip passes according to Phase.
+  ModulePassManager CoroPM;
+  CoroPM.addPass(CoroEarlyPass());
+  CGSCCPassManager CGPM;
+  CGPM.addPass(CoroSplitPass());
+  CoroPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(std::move(CGPM)));
+  CoroPM.addPass(CoroCleanupPass());
+  CoroPM.addPass(GlobalDCEPass());
+  return CoroConditionalWrapper(std::move(CoroPM));
+}
+
 // TODO: Investigate the cost/benefit of tail call elimination on debugging.
 FunctionPassManager
 PassBuilder::buildO1FunctionSimplificationPipeline(OptimizationLevel Level,
@@ -2250,14 +2263,7 @@ PassBuilder::buildO0DefaultPipeline(OptimizationLevel Level,
       MPM.addPass(createModuleToFunctionPassAdaptor(std::move(FPM)));
   }
 
-  ModulePassManager CoroPM;
-  CoroPM.addPass(CoroEarlyPass());
-  CGSCCPassManager CGPM;
-  CGPM.addPass(CoroSplitPass());
-  CoroPM.addPass(createModuleToPostOrderCGSCCPassAdaptor(std::move(CGPM)));
-  CoroPM.addPass(CoroCleanupPass());
-  CoroPM.addPass(GlobalDCEPass());
-  MPM.addPass(CoroConditionalWrapper(std::move(CoroPM)));
+  MPM.addPass(buildCoroWrapper(Phase));
 
   invokeOptimizerLastEPCallbacks(MPM, Level, Phase);