https://github.com/aengelke created 
https://github.com/llvm/llvm-project/pull/208178

By default, we shouldn't add expensive verifier passes to the pipeline.
This causes a substantial perf regression compared to the legacy PM.


>From df1de1b5a525299e06eebe51705a648c3f776605 Mon Sep 17 00:00:00 2001
From: Alexis Engelke <[email protected]>
Date: Wed, 8 Jul 2026 09:27:09 +0000
Subject: [PATCH] [spr] initial version

Created using spr 1.3.8-wip
---
 clang/lib/CodeGen/BackendUtil.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/clang/lib/CodeGen/BackendUtil.cpp 
b/clang/lib/CodeGen/BackendUtil.cpp
index e33480f6c6416..f33026426e815 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -1301,6 +1301,7 @@ void EmitAssemblyHelper::RunCodegenPipelineNewPM(
   CGSCCAnalysisManager CGAM;
   ModuleAnalysisManager MAM;
   CGPassBuilderOption Opt = getCGPassBuilderOption();
+  Opt.DisableVerify = !CodeGenOpts.VerifyModule;
   MachineModuleInfo MMI(TM.get());
   PassInstrumentationCallbacks PIC;
   PipelineTuningOptions PTOptions;

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