Expose Function::viewCFG and Function::viewCFGOnly to bindings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48982 91177308-0d34-0410-b5e6-96231b3b80d8

bindings/ocaml/analysis/analysis_ocaml.c

@@ -58,3 +58,15 @@ CAMLprim value llvm_assert_valid_function(LLVMValueRef Fn) {
   LLVMVerifyFunction(Fn, LLVMAbortProcessAction);
   return Val_unit;
 }
+
+/* Llvm.llvalue -> unit */
+CAMLprim value llvm_view_function_cfg(LLVMValueRef Fn) {
+  LLVMViewFunctionCFG(Fn);
+  return Val_unit;
+}
+
+/* Llvm.llvalue -> unit */
+CAMLprim value llvm_view_function_cfg_only(LLVMValueRef Fn) {
+  LLVMViewFunctionCFGOnly(Fn);
+  return Val_unit;
+}

bindings/ocaml/analysis/llvm_analysis.ml

@@ -17,3 +17,6 @@ external assert_valid_module : Llvm.llmodule -> unit
 
 external assert_valid_function : Llvm.llvalue -> unit
                                = "llvm_assert_valid_function"
+external view_function_cfg : Llvm.llvalue -> unit = "llvm_view_function_cfg"
+external view_function_cfg_only : Llvm.llvalue -> unit
+                                = "llvm_view_function_cfg_only"

bindings/ocaml/analysis/llvm_analysis.mli

@@ -33,3 +33,14 @@ external assert_valid_module : Llvm.llmodule -> unit
     [llvm::verifyFunction]. *)
 external assert_valid_function : Llvm.llvalue -> unit
                                = "llvm_assert_valid_function"
+
+(** [view_function_cfg f] opens up a ghostscript window displaying the CFG of
+    the current function with the code for each basic block inside.
+    See [llvm::Function::viewCFG]. *)
+external view_function_cfg : Llvm.llvalue -> unit = "llvm_view_function_cfg"
+
+(** [view_function_cfg_only f] works just like [view_function_cfg], but does not
+    include the contents of basic blocks into the nodes.
+    See [llvm::Function::viewCFGOnly]. *)
+external view_function_cfg_only : Llvm.llvalue -> unit
+                                = "llvm_view_function_cfg_only"

include/llvm-c/Analysis.h

@@ -43,6 +43,10 @@ int LLVMVerifyModule(LLVMModuleRef M, LLVMVerifierFailureAction Action,
    for debugging. */
 int LLVMVerifyFunction(LLVMValueRef Fn, LLVMVerifierFailureAction Action);
 
+/* Open up a ghostview window that displays the CFG of the current function.
+   Useful for debugging. */
+void LLVMViewFunctionCFG(LLVMValueRef Fn);
+void LLVMViewFunctionCFGOnly(LLVMValueRef Fn);
 
 #ifdef __cplusplus
 }

lib/Analysis/Analysis.cpp

@@ -33,3 +33,12 @@ int LLVMVerifyFunction(LLVMValueRef Fn, LLVMVerifierFailureAction Action) {
                         static_cast<VerifierFailureAction>(Action));
 }
 
+void LLVMViewFunctionCFG(LLVMValueRef Fn) {
+  Function *F = unwrap<Function>(Fn);
+  F->viewCFG();
+}
+
+void LLVMViewFunctionCFGOnly(LLVMValueRef Fn) {
+  Function *F = unwrap<Function>(Fn);
+  F->viewCFGOnly();
+}