1 //===- llvm/unittest/IR/ValueTest.cpp - Value unit tests ------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "llvm/Assembly/Parser.h" 11 #include "llvm/IR/Function.h" 12 #include "llvm/IR/LLVMContext.h" 13 #include "llvm/IR/Module.h" 14 #include "llvm/IR/Value.h" 15 #include "llvm/Support/SourceMgr.h" 16 #include "gtest/gtest.h" 17 using namespace llvm; 18 19 namespace { 20 21 TEST(ValueTest, UsedInBasicBlock) { 22 LLVMContext C; 23 24 const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n" 25 "bb0:\n" 26 " %y1 = add i32 %y, 1\n" 27 " %y2 = add i32 %y, 1\n" 28 " %y3 = add i32 %y, 1\n" 29 " %y4 = add i32 %y, 1\n" 30 " %y5 = add i32 %y, 1\n" 31 " %y6 = add i32 %y, 1\n" 32 " %y7 = add i32 %y, 1\n" 33 " %y8 = add i32 %x, 1\n" 34 " ret void\n" 35 "}\n"; 36 SMDiagnostic Err; 37 Module *M = ParseAssemblyString(ModuleString, NULL, Err, C); 38 39 Function *F = M->getFunction("f"); 40 41 EXPECT_FALSE(F->isUsedInBasicBlock(F->begin())); 42 EXPECT_TRUE((++F->arg_begin())->isUsedInBasicBlock(F->begin())); 43 EXPECT_TRUE(F->arg_begin()->isUsedInBasicBlock(F->begin())); 44 } 45 46 } // end anonymous namespace 47