diff --git a/llvm/test/tools/llvm-reduce/run-ir-passes.ll b/llvm/test/tools/llvm-reduce/run-ir-passes.ll
new file mode 100644
--- /dev/null
+++ b/llvm/test/tools/llvm-reduce/run-ir-passes.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-reduce --delta-passes=ir-passes --test FileCheck --test-arg --check-prefixes=CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t
+; RUN: FileCheck --check-prefixes=CHECK-FINAL --input-file=%t %s
+
+; CHECK-INTERESTINGNESS-LABEL: @f1
+; CHECK-INTERESTINGNESS: add
+; CHECK-INTERESTINGNESS-LABEL: @f2
+; CHECK-INTERESTINGNESS: add
+; CHECK-INTERESTINGNESS: add
+
+; CHECK-FINAL-LABEL: @f1
+; CHECK-FINAL: add i32 %a, 10
+; CHECK-FINAL-LABEL: @f2
+; CHECK-FINAL: add i32 %a, 5
+; CHECK-FINAL: add i32 %b, 5
+
+define i32 @f1(i32 %a) {
+  %b = add i32 %a, 5
+  %c = add i32 %b, 5
+  ret i32 %c
+}
+
+define i32 @f2(i32 %a) {
+  %b = add i32 %a, 5
+  %c = add i32 %b, 5
+  ret i32 %c
+}
+
+declare void @f3()
\ No newline at end of file
diff --git a/llvm/tools/llvm-reduce/CMakeLists.txt b/llvm/tools/llvm-reduce/CMakeLists.txt
--- a/llvm/tools/llvm-reduce/CMakeLists.txt
+++ b/llvm/tools/llvm-reduce/CMakeLists.txt
@@ -10,6 +10,7 @@
   IRReader
   MC
   MIRParser
+  Passes
   Support
   Target
   TransformUtils
@@ -39,6 +40,7 @@
   deltas/ReduceOperandsSkip.cpp
   deltas/ReduceOperandsToArgs.cpp
   deltas/ReduceInstructionsMIR.cpp
+  deltas/RunIRPasses.cpp
   llvm-reduce.cpp
 
   DEPENDS
diff --git a/llvm/tools/llvm-reduce/DeltaManager.cpp b/llvm/tools/llvm-reduce/DeltaManager.cpp
--- a/llvm/tools/llvm-reduce/DeltaManager.cpp
+++ b/llvm/tools/llvm-reduce/DeltaManager.cpp
@@ -33,6 +33,7 @@
 #include "deltas/ReduceOperandsSkip.h"
 #include "deltas/ReduceOperandsToArgs.h"
 #include "deltas/ReduceSpecialGlobals.h"
+#include "deltas/RunIRPasses.h"
 #include "llvm/Support/CommandLine.h"
 
 using namespace llvm;
@@ -49,6 +50,7 @@
   DELTA_PASS("aliases", reduceAliasesDeltaPass)                                \
   DELTA_PASS("function-bodies", reduceFunctionBodiesDeltaPass)                 \
   DELTA_PASS("functions", reduceFunctionsDeltaPass)                            \
+  DELTA_PASS("ir-passes", runIRPassesDeltaPass)                                \
   DELTA_PASS("basic-blocks", reduceBasicBlocksDeltaPass)                       \
   DELTA_PASS("global-values", reduceGlobalValuesDeltaPass)                     \
   DELTA_PASS("global-objects", reduceGlobalObjectsDeltaPass)                   \
diff --git a/llvm/tools/llvm-reduce/deltas/RunIRPasses.h b/llvm/tools/llvm-reduce/deltas/RunIRPasses.h
new file mode 100644
--- /dev/null
+++ b/llvm/tools/llvm-reduce/deltas/RunIRPasses.h
@@ -0,0 +1,18 @@
+//===- RunIRPasses.h ------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_TOOLS_LLVM_REDUCE_DELTAS_RUNPASSES_H
+#define LLVM_TOOLS_LLVM_REDUCE_DELTAS_RUNPASSES_H
+
+#include "Delta.h"
+
+namespace llvm {
+void runIRPassesDeltaPass(TestRunner &Test);
+} // namespace llvm
+
+#endif
diff --git a/llvm/tools/llvm-reduce/deltas/RunIRPasses.cpp b/llvm/tools/llvm-reduce/deltas/RunIRPasses.cpp
new file mode 100644
--- /dev/null
+++ b/llvm/tools/llvm-reduce/deltas/RunIRPasses.cpp
@@ -0,0 +1,48 @@
+//===- RunIRPasses.cpp ----------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "RunIRPasses.h"
+#include "Delta.h"
+#include "llvm/Passes/PassBuilder.h"
+#include "llvm/Transforms/InstCombine/InstCombine.h"
+#include "llvm/Transforms/Scalar/SimplifyCFG.h"
+
+using namespace llvm;
+
+static void runPasses(Oracle &O, Module &Program) {
+  InstCombinePass IC;
+  SimplifyCFGPass SCFG;
+
+  LoopAnalysisManager LAM;
+  FunctionAnalysisManager FAM;
+  CGSCCAnalysisManager CGAM;
+  ModuleAnalysisManager MAM;
+
+  PassBuilder PB;
+
+  PB.registerModuleAnalyses(MAM);
+  PB.registerCGSCCAnalyses(CGAM);
+  PB.registerFunctionAnalyses(FAM);
+  PB.registerLoopAnalyses(LAM);
+  PB.crossRegisterProxies(LAM, FAM, CGAM, MAM);
+
+  for (auto &F : Program) {
+    if (F.isDeclaration())
+      continue;
+    if (!O.shouldKeep())
+      IC.run(F, FAM);
+    if (!O.shouldKeep())
+      SCFG.run(F, FAM);
+  }
+}
+
+void llvm::runIRPassesDeltaPass(TestRunner &Test) {
+  errs() << "*** Running passes ...\n";
+  runDeltaPass(Test, runPasses);
+  errs() << "----------------------------\n";
+}
diff --git a/llvm/utils/gn/secondary/llvm/tools/llvm-reduce/BUILD.gn b/llvm/utils/gn/secondary/llvm/tools/llvm-reduce/BUILD.gn
--- a/llvm/utils/gn/secondary/llvm/tools/llvm-reduce/BUILD.gn
+++ b/llvm/utils/gn/secondary/llvm/tools/llvm-reduce/BUILD.gn
@@ -3,6 +3,7 @@
     "//llvm/lib/CodeGen/MIRParser",
     "//llvm/lib/IR",
     "//llvm/lib/IRReader",
+    "//llvm/lib/Passes",
     "//llvm/lib/Support",
     "//llvm/lib/Target",
     "//llvm/lib/Target:TargetsToBuild",
@@ -33,6 +34,7 @@
     "deltas/ReduceOperandsSkip.cpp",
     "deltas/ReduceOperandsToArgs.cpp",
     "deltas/ReduceSpecialGlobals.cpp",
+    "deltas/RunIRPasses.cpp",
     "llvm-reduce.cpp",
   ]
 }