Fix IR-prettifier to correctly remap void patchpoints

src/codegen/irgen/util.cpp

@@ -201,21 +201,40 @@ public:
                 return module->getOrInsertGlobal(name, pt->getElementType());
             }
         }
-        if (llvm::IntrinsicInst* ii = llvm::dyn_cast<llvm::IntrinsicInst>(v)) {
+        return v;
+    }
+};
+
+void dumpPrettyIR(llvm::Function* f) {
+    //f->getParent()->dump();
+    //return;
+
+    std::unique_ptr<llvm::Module> tmp_module(llvm::CloneModule(f->getParent()));
+    // std::unique_ptr<llvm::Module> tmp_module(new llvm::Module("tmp", g.context));
+
+    llvm::Function* new_f = tmp_module->begin();
+
+    llvm::ValueToValueMapTy VMap;
+    llvm::RemapFlags flags = llvm::RF_None;
+    llvm::ValueMapTypeRemapper* type_remapper = NULL;
+    PrettifyingMaterializer materializer(tmp_module.get(), VMap, flags, type_remapper);
+    for (llvm::Function::iterator I = new_f->begin(), E = new_f->end(); I != E; ++I) {
+        VMap[I] = I;
+    }
+    for (llvm::inst_iterator it = inst_begin(new_f), end = inst_end(new_f); it != end; ++it) {
+        llvm::RemapInstruction(&*it, VMap, flags, type_remapper, &materializer);
+
+        if (llvm::IntrinsicInst* ii = llvm::dyn_cast<llvm::IntrinsicInst>(&*it)) {
             if (ii->getIntrinsicID() == llvm::Intrinsic::experimental_patchpoint_i64
                 || ii->getIntrinsicID() == llvm::Intrinsic::experimental_patchpoint_void
                 || ii->getIntrinsicID() == llvm::Intrinsic::experimental_patchpoint_double) {
                 int pp_id = -1;
                 for (int i = 0; i < ii->getNumArgOperands(); i++) {
                     llvm::Value* op = ii->getArgOperand(i);
-                    if (i != 2) {
                     if (i == 0) {
                         llvm::ConstantInt* l_pp_id = llvm::cast<llvm::ConstantInt>(op);
                         pp_id = l_pp_id->getSExtValue();
-                        }
-                        ii->setArgOperand(i, llvm::MapValue(op, VMap, flags, type_remapper, this));
-                        continue;
-                    } else {
+                    } else if (i == 2) {
                         assert(pp_id != -1);
                         void* addr = PatchpointInfo::getSlowpathAddr(pp_id);
 
@@ -234,35 +253,12 @@ public:
                             ii->setArgOperand(i, ptr_val);
                             continue;
                         } else {
-                            ii->setArgOperand(i, module->getOrInsertGlobal(name, g.i8));
-                        }
+                            ii->setArgOperand(i, tmp_module->getOrInsertGlobal(name, g.i8));
                         }
                     }
-                return ii;
                 }
             }
-        return v;
-    }
-};
-
-void dumpPrettyIR(llvm::Function* f) {
-    //f->getParent()->dump();
-    //return;
-
-    std::unique_ptr<llvm::Module> tmp_module(llvm::CloneModule(f->getParent()));
-    // std::unique_ptr<llvm::Module> tmp_module(new llvm::Module("tmp", g.context));
-
-    llvm::Function* new_f = tmp_module->begin();
-
-    llvm::ValueToValueMapTy VMap;
-    llvm::RemapFlags flags = llvm::RF_None;
-    llvm::ValueMapTypeRemapper* type_remapper = NULL;
-    PrettifyingMaterializer materializer(tmp_module.get(), VMap, flags, type_remapper);
-    for (llvm::Function::iterator I = new_f->begin(), E = new_f->end(); I != E; ++I) {
-        VMap[I] = I;
         }
-    for (llvm::inst_iterator it = inst_begin(new_f), end = inst_end(new_f); it != end; ++it) {
-        llvm::RemapInstruction(&*it, VMap, flags, type_remapper, &materializer);
     }
     tmp_module->begin()->dump();
     // tmp_module->dump();