Modernize the .ll parsing interface.

[oota-llvm.git] / unittests / IR / UseTest.cpp

diff --git a/unittests/IR/UseTest.cpp b/unittests/IR/UseTest.cpp
index 6e58bd2293c3e137566b826827a9851ee8455439..3f33ca6a368eab719c4297fe05cbee179f282e33 100644 (file)
--- a/unittests/IR/UseTest.cpp
+++ b/unittests/IR/UseTest.cpp
@@ -13,8 +13,10 @@
 #include "llvm/IR/Module.h"
 #include "llvm/IR/User.h"
 #include "llvm/IR/Instructions.h"
+#include "llvm/Support/Format.h"
 #include "llvm/Support/SourceMgr.h"
 #include "gtest/gtest.h"
+
 using namespace llvm;
 
 namespace {
@@ -35,7 +37,8 @@ TEST(UseTest, sort) {
                              "  ret void\n"
                              "}\n";
   SMDiagnostic Err;
-  Module *M = ParseAssemblyString(ModuleString, nullptr, Err, C);
+  char vnbuf[8];
+  std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
   Function *F = M->getFunction("f");
   ASSERT_TRUE(F);
   ASSERT_TRUE(F->arg_begin() != F->arg_end());
@@ -46,16 +49,63 @@ TEST(UseTest, sort) {
     return L.getUser()->getName() < R.getUser()->getName();
   });
   unsigned I = 0;
-  for (User *U : X.users())
-    EXPECT_EQ("v" + std::to_string(I++), U->getName());
+  for (User *U : X.users()) {
+    snprintf(vnbuf, sizeof(vnbuf), "v%u", I++);
+    EXPECT_EQ(vnbuf, U->getName());
+  }
   ASSERT_EQ(8u, I);
 
   X.sortUseList([](const Use &L, const Use &R) {
     return L.getUser()->getName() > R.getUser()->getName();
   });
   I = 0;
-  for (User *U : X.users())
-    EXPECT_EQ("v" + std::to_string((7 - I++)), U->getName());
+  for (User *U : X.users()) {
+    snprintf(vnbuf, sizeof(vnbuf), "v%u", (7 - I++));
+    EXPECT_EQ(vnbuf, U->getName());
+  }
+  ASSERT_EQ(8u, I);
+}
+
+TEST(UseTest, reverse) {
+  LLVMContext C;
+
+  const char *ModuleString = "define void @f(i32 %x) {\n"
+                             "entry:\n"
+                             "  %v0 = add i32 %x, 0\n"
+                             "  %v2 = add i32 %x, 2\n"
+                             "  %v5 = add i32 %x, 5\n"
+                             "  %v1 = add i32 %x, 1\n"
+                             "  %v3 = add i32 %x, 3\n"
+                             "  %v7 = add i32 %x, 7\n"
+                             "  %v6 = add i32 %x, 6\n"
+                             "  %v4 = add i32 %x, 4\n"
+                             "  ret void\n"
+                             "}\n";
+  SMDiagnostic Err;
+  char vnbuf[8];
+  std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
+  Function *F = M->getFunction("f");
+  ASSERT_TRUE(F);
+  ASSERT_TRUE(F->arg_begin() != F->arg_end());
+  Argument &X = *F->arg_begin();
+  ASSERT_EQ("x", X.getName());
+
+  X.sortUseList([](const Use &L, const Use &R) {
+    return L.getUser()->getName() < R.getUser()->getName();
+  });
+  unsigned I = 0;
+  for (User *U : X.users()) {
+    snprintf(vnbuf, sizeof(vnbuf), "v%u", I++);
+    EXPECT_EQ(vnbuf, U->getName());
+  }
+  ASSERT_EQ(8u, I);
+
+  X.reverseUseList();
+  I = 0;
+  for (User *U : X.users()) {
+    snprintf(vnbuf, sizeof(vnbuf), "v%u", (7 - I++));
+    EXPECT_EQ(vnbuf, U->getName());
+  }
   ASSERT_EQ(8u, I);
 }