From e0e22bb7c8106f7df0cb43364342330bf4b3e572 Mon Sep 17 00:00:00 2001
From: Vijay Sundaresan <vijaysun@ca.ibm.com>
Date: Tue, 7 Jan 2025 13:52:40 -0500
Subject: [PATCH] Adding an env var for inliner max recursion depth

---
 runtime/compiler/optimizer/J9EstimateCodeSize.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/runtime/compiler/optimizer/J9EstimateCodeSize.cpp b/runtime/compiler/optimizer/J9EstimateCodeSize.cpp
index a43d6fa2445..2abbc373994 100644
--- a/runtime/compiler/optimizer/J9EstimateCodeSize.cpp
+++ b/runtime/compiler/optimizer/J9EstimateCodeSize.cpp
@@ -1294,7 +1294,13 @@ TR_J9EstimateCodeSize::realEstimateCodeSize(TR_CallTarget *calltarget, TR_CallSt
       return returnCleanup(ECS_VISITED_COUNT_THRESHOLD_EXCEEDED);
       }
 
-   if (_recursionDepth > MAX_ECS_RECURSION_DEPTH)
+
+   int32_t maxRecDepth =  MAX_ECS_RECURSION_DEPTH;
+   static const char *mrd = feGetEnv("TR_MaxRecursionDepth");
+   if (mrd)
+      maxRecDepth = atoi(mrd);
+
+   if (_recursionDepth > maxRecDepth)
       {
       calltarget->_isPartialInliningCandidate = false;
       heuristicTrace(tracer(), "*** Depth %d: ECS end for target %p signature %s. Exceeded Recursion Depth", _recursionDepth, calltarget, callerName);