diff --git a/llvm/test/tools/llvm-profgen/cs-preinline-cost.test b/llvm/test/tools/llvm-profgen/cs-preinline-cost.test
--- a/llvm/test/tools/llvm-profgen/cs-preinline-cost.test
+++ b/llvm/test/tools/llvm-profgen/cs-preinline-cost.test
@@ -1,6 +1,6 @@
 ; REQUIRES: asserts
 ; Test default using size of profile as a proxy
-; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/cs-preinline-cost.perfscript --binary=%S/Inputs/cs-preinline-cost.perfbin --csspgo-preinliner --debug-only=cs-preinliner --output=/dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-DEFAULT
+; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/cs-preinline-cost.perfscript --binary=%S/Inputs/cs-preinline-cost.perfbin --csspgo-preinliner --debug-only=cs-preinliner --use-context-cost-for-preinliner=0 --output=/dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-DEFAULT
 
 ; Test use-context-cost-for-preinliner using inlinee's byte size as context-sensitive inline cost
 ; RUN: llvm-profgen --format=text --perfscript=%S/Inputs/cs-preinline-cost.perfscript --binary=%S/Inputs/cs-preinline-cost.perfbin --csspgo-preinliner --debug-only=cs-preinliner --use-context-cost-for-preinliner --output=/dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-CSCOST
diff --git a/llvm/tools/llvm-profgen/CSPreInliner.cpp b/llvm/tools/llvm-profgen/CSPreInliner.cpp
--- a/llvm/tools/llvm-profgen/CSPreInliner.cpp
+++ b/llvm/tools/llvm-profgen/CSPreInliner.cpp
@@ -45,7 +45,7 @@
              "estimated global top-down inline decisions"));
 
 cl::opt<bool> UseContextCostForPreInliner(
-    "use-context-cost-for-preinliner", cl::Hidden, cl::init(false),
+    "use-context-cost-for-preinliner", cl::Hidden, cl::init(true),
     cl::desc("Use context-sensitive byte size cost for preinliner decisions"));
 
 static cl::opt<bool> SamplePreInlineReplay(