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diff --git a/llvm-c/Transforms/PassBuilder.h b/llvm-c/Transforms/PassBuilder.h
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+/*===-- llvm-c/Transform/PassBuilder.h - PassBuilder for LLVM C ---*- C -*-===*\
+|*                                                                            *|
+|* 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                    *|
+|*                                                                            *|
+|*===----------------------------------------------------------------------===*|
+|*                                                                            *|
+|* This header contains the LLVM-C interface into the new pass manager        *|
+|*                                                                            *|
+\*===----------------------------------------------------------------------===*/
+
+#ifndef LLVM_C_TRANSFORMS_PASSBUILDER_H
+#define LLVM_C_TRANSFORMS_PASSBUILDER_H
+
+#include "llvm-c/Error.h"
+#include "llvm-c/TargetMachine.h"
+#include "llvm-c/Types.h"
+
+/**
+ * @defgroup LLVMCCoreNewPM New Pass Manager
+ * @ingroup LLVMCCore
+ *
+ * @{
+ */
+
+LLVM_C_EXTERN_C_BEGIN
+
+/**
+ * A set of options passed which are attached to the Pass Manager upon run.
+ *
+ * This corresponds to an llvm::LLVMPassBuilderOptions instance
+ *
+ * The details for how the different properties of this structure are used can
+ * be found in the source for LLVMRunPasses
+ */
+typedef struct LLVMOpaquePassBuilderOptions *LLVMPassBuilderOptionsRef;
+
+/**
+ * Construct and run a set of passes over a module
+ *
+ * This function takes a string with the passes that should be used. The format
+ * of this string is the same as opt's -passes argument for the new pass
+ * manager. Individual passes may be specified, separated by commas. Full
+ * pipelines may also be invoked using `default<O3>` and friends. See opt for
+ * full reference of the Passes format.
+ */
+LLVMErrorRef LLVMRunPasses(LLVMModuleRef M, const char *Passes,
+                           LLVMTargetMachineRef TM,
+                           LLVMPassBuilderOptionsRef Options);
+
+/**
+ * Construct and run a set of passes over a function.
+ *
+ * This function behaves the same as LLVMRunPasses, but operates on a single
+ * function instead of an entire module.
+ */
+LLVMErrorRef LLVMRunPassesOnFunction(LLVMValueRef F, const char *Passes,
+                                     LLVMTargetMachineRef TM,
+                                     LLVMPassBuilderOptionsRef Options);
+
+/**
+ * Create a new set of options for a PassBuilder
+ *
+ * Ownership of the returned instance is given to the client, and they are
+ * responsible for it. The client should call LLVMDisposePassBuilderOptions
+ * to free the pass builder options.
+ */
+LLVMPassBuilderOptionsRef LLVMCreatePassBuilderOptions(void);
+
+/**
+ * Toggle adding the VerifierPass for the PassBuilder, ensuring all functions
+ * inside the module is valid.
+ */
+void LLVMPassBuilderOptionsSetVerifyEach(LLVMPassBuilderOptionsRef Options,
+                                         LLVMBool VerifyEach);
+
+/**
+ * Toggle debug logging when running the PassBuilder
+ */
+void LLVMPassBuilderOptionsSetDebugLogging(LLVMPassBuilderOptionsRef Options,
+                                           LLVMBool DebugLogging);
+
+/**
+ * Specify a custom alias analysis pipeline for the PassBuilder to be used
+ * instead of the default one. The string argument is not copied; the caller
+ * is responsible for ensuring it outlives the PassBuilderOptions instance.
+ */
+void LLVMPassBuilderOptionsSetAAPipeline(LLVMPassBuilderOptionsRef Options,
+                                         const char *AAPipeline);
+
+void LLVMPassBuilderOptionsSetLoopInterleaving(
+    LLVMPassBuilderOptionsRef Options, LLVMBool LoopInterleaving);
+
+void LLVMPassBuilderOptionsSetLoopVectorization(
+    LLVMPassBuilderOptionsRef Options, LLVMBool LoopVectorization);
+
+void LLVMPassBuilderOptionsSetSLPVectorization(
+    LLVMPassBuilderOptionsRef Options, LLVMBool SLPVectorization);
+
+void LLVMPassBuilderOptionsSetLoopUnrolling(LLVMPassBuilderOptionsRef Options,
+                                            LLVMBool LoopUnrolling);
+
+void LLVMPassBuilderOptionsSetForgetAllSCEVInLoopUnroll(
+    LLVMPassBuilderOptionsRef Options, LLVMBool ForgetAllSCEVInLoopUnroll);
+
+void LLVMPassBuilderOptionsSetLicmMssaOptCap(LLVMPassBuilderOptionsRef Options,
+                                             unsigned LicmMssaOptCap);
+
+void LLVMPassBuilderOptionsSetLicmMssaNoAccForPromotionCap(
+    LLVMPassBuilderOptionsRef Options, unsigned LicmMssaNoAccForPromotionCap);
+
+void LLVMPassBuilderOptionsSetCallGraphProfile(
+    LLVMPassBuilderOptionsRef Options, LLVMBool CallGraphProfile);
+
+void LLVMPassBuilderOptionsSetMergeFunctions(LLVMPassBuilderOptionsRef Options,
+                                             LLVMBool MergeFunctions);
+
+void LLVMPassBuilderOptionsSetInlinerThreshold(
+    LLVMPassBuilderOptionsRef Options, int Threshold);
+
+/**
+ * Dispose of a heap-allocated PassBuilderOptions instance
+ */
+void LLVMDisposePassBuilderOptions(LLVMPassBuilderOptionsRef Options);
+
+/**
+ * @}
+ */
+
+LLVM_C_EXTERN_C_END
+
+#endif // LLVM_C_TRANSFORMS_PASSBUILDER_H