[Code generation] Prototype for phi node

examples/matrix.cpp

@@ -2,6 +2,9 @@
 #include <cstdio>
 #include "ast.h"
 #include "codegen.h"
+#include "llvm/IR/IRPrintingPasses.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/PassManager.h"
 
 typedef struct yy_buffer_state * YY_BUFFER_STATE;
 extern int yyparse();
@@ -14,6 +17,8 @@ const char src[] =
 "\
 void test(fp32 *A, fp32 *B, fp32 *C){\
   int32 i = 0;\
+  int32 j = 1;\
+  i = i + j;\
 }\
 ";
 
@@ -25,5 +30,8 @@ int main() {
    tdl::context context;
    tdl::module module("matrix", &context);
    program->codegen(&module);
+   llvm::PrintModulePass print(llvm::outs());
+   llvm::AnalysisManager<llvm::Module> analysis;
+   print.run(*module.handle(), analysis);
    return 0;
 }