[LLVM-C][Ocaml] Add MergeFunctions and DCE pass

MergeFunctions and DCE pass are missing from OCaml/C-api. This patch
adds them.

Differential Revision: https://reviews.llvm.org/D65071

Reviewers: whitequark, hiraditya, deadalnix

Reviewed By: whitequark

Subscribers: llvm-commits

Tags: #llvm

Authored by: kren1

llvm-svn: 373170

llvm/bindings/ocaml/transforms/ipo/ipo_ocaml.c

@@ -31,6 +31,12 @@ CAMLprim value llvm_add_constant_merge(LLVMPassManagerRef PM) {
   return Val_unit;
 }
 
+/* [`Module] Llvm.PassManager.t -> unit */
+CAMLprim value llvm_add_merge_functions(LLVMPassManagerRef PM) {
+  LLVMAddMergeFunctionsPass(PM);
+  return Val_unit;
+}
+
 /* [`Module] Llvm.PassManager.t -> unit */
 CAMLprim value llvm_add_dead_arg_elimination(LLVMPassManagerRef PM) {
   LLVMAddDeadArgEliminationPass(PM);

llvm/bindings/ocaml/transforms/ipo/llvm_ipo.ml

@@ -12,6 +12,9 @@ external add_argument_promotion
 external add_constant_merge
   : [ `Module ] Llvm.PassManager.t -> unit
   = "llvm_add_constant_merge"
+external add_merge_functions
+  : [ `Module ] Llvm.PassManager.t -> unit
+  = "llvm_add_merge_functions"
 external add_dead_arg_elimination
   : [ `Module ] Llvm.PassManager.t -> unit
   = "llvm_add_dead_arg_elimination"

llvm/bindings/ocaml/transforms/ipo/llvm_ipo.mli

@@ -21,6 +21,11 @@ external add_constant_merge
   : [ `Module ] Llvm.PassManager.t -> unit
   = "llvm_add_constant_merge"
 
+(** See the [llvm::createMergeFunctionsPass] function. *)
+external add_merge_functions
+  : [ `Module ] Llvm.PassManager.t -> unit
+  = "llvm_add_merge_functions"
+
 (** See the [llvm::createDeadArgEliminationPass] function. *)
 external add_dead_arg_elimination
   : [ `Module ] Llvm.PassManager.t -> unit

llvm/bindings/ocaml/transforms/scalar_opts/llvm_scalar_opts.ml

@@ -9,6 +9,9 @@
 external add_aggressive_dce
   : [< Llvm.PassManager.any ] Llvm.PassManager.t -> unit
   = "llvm_add_aggressive_dce"
+external add_dce
+  : [< Llvm.PassManager.any ] Llvm.PassManager.t -> unit
+  = "llvm_add_dce"
 external add_alignment_from_assumptions
   : [< Llvm.PassManager.any ] Llvm.PassManager.t -> unit
   = "llvm_add_alignment_from_assumptions"

llvm/bindings/ocaml/transforms/scalar_opts/llvm_scalar_opts.mli

@@ -16,6 +16,11 @@ external add_aggressive_dce
   : [< Llvm.PassManager.any ] Llvm.PassManager.t -> unit
   = "llvm_add_aggressive_dce"
 
+(** See the [llvm::createDCEPass] function. *)
+external add_dce
+  : [< Llvm.PassManager.any ] Llvm.PassManager.t -> unit
+  = "llvm_add_dce"
+
 (** See the [llvm::createAlignmentFromAssumptionsPass] function. *)
 external add_alignment_from_assumptions
   : [< Llvm.PassManager.any ] Llvm.PassManager.t -> unit

llvm/bindings/ocaml/transforms/scalar_opts/scalar_opts_ocaml.c

@@ -26,6 +26,11 @@ CAMLprim value llvm_add_aggressive_dce(LLVMPassManagerRef PM) {
   return Val_unit;
 }
 
+CAMLprim value llvm_add_dce(LLVMPassManagerRef PM) {
+  LLVMAddDCEPass(PM);
+  return Val_unit;
+}
+
 /* [<Llvm.PassManager.any] Llvm.PassManager.t -> unit */
 CAMLprim value llvm_add_alignment_from_assumptions(LLVMPassManagerRef PM) {
   LLVMAddAlignmentFromAssumptionsPass(PM);

llvm/include/llvm-c/Transforms/IPO.h

@@ -34,6 +34,9 @@ void LLVMAddArgumentPromotionPass(LLVMPassManagerRef PM);
 /** See llvm::createConstantMergePass function. */
 void LLVMAddConstantMergePass(LLVMPassManagerRef PM);
 
+/** See llvm::createMergeFunctionsPass function. */
+void LLVMAddMergeFunctionsPass(LLVMPassManagerRef PM);
+
 /** See llvm::createCalledValuePropagationPass function. */
 void LLVMAddCalledValuePropagationPass(LLVMPassManagerRef PM);
 

llvm/include/llvm-c/Transforms/Scalar.h

@@ -35,6 +35,9 @@ extern "C" {
 /** See llvm::createAggressiveDCEPass function. */
 void LLVMAddAggressiveDCEPass(LLVMPassManagerRef PM);
 
+/** See llvm::createDeadCodeEliminationPass function. */
+void LLVMAddDCEPass(LLVMPassManagerRef PM);
+
 /** See llvm::createBitTrackingDCEPass function. */
 void LLVMAddBitTrackingDCEPass(LLVMPassManagerRef PM);
 

llvm/lib/Transforms/IPO/IPO.cpp

@@ -114,6 +114,10 @@ void LLVMAddIPSCCPPass(LLVMPassManagerRef PM) {
   unwrap(PM)->add(createIPSCCPPass());
 }
 
+void LLVMAddMergeFunctionsPass(LLVMPassManagerRef PM) {
+  unwrap(PM)->add(createMergeFunctionsPass());
+}
+
 void LLVMAddInternalizePass(LLVMPassManagerRef PM, unsigned AllButMain) {
   auto PreserveMain = [=](const GlobalValue &GV) {
     return AllButMain && GV.getName() == "main";

llvm/lib/Transforms/Scalar/Scalar.cpp

@@ -123,6 +123,10 @@ void LLVMAddAggressiveDCEPass(LLVMPassManagerRef PM) {
   unwrap(PM)->add(createAggressiveDCEPass());
 }
 
+void LLVMAddDCEPass(LLVMPassManagerRef PM) {
+  unwrap(PM)->add(createDeadCodeEliminationPass());
+}
+
 void LLVMAddBitTrackingDCEPass(LLVMPassManagerRef PM) {
   unwrap(PM)->add(createBitTrackingDCEPass());
 }