unittests/IR/DataLayoutTest.cpp

   1 //===- ConstantRangeTest.cpp - ConstantRange tests ------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/IR/DataLayout.h"
  10 #include "llvm/IR/LLVMContext.h"
  11 #include "llvm/IR/Type.h"
  12 #include "gtest/gtest.h"
  13
  14 using namespace llvm;
  15
  16 namespace {
  17
  18 TEST(DataLayoutTest, FunctionPtrAlign) {
  19   EXPECT_EQ(MaybeAlign(0), DataLayout("").getFunctionPtrAlign());
  20   EXPECT_EQ(MaybeAlign(1), DataLayout("Fi8").getFunctionPtrAlign());
  21   EXPECT_EQ(MaybeAlign(2), DataLayout("Fi16").getFunctionPtrAlign());
  22   EXPECT_EQ(MaybeAlign(4), DataLayout("Fi32").getFunctionPtrAlign());
  23   EXPECT_EQ(MaybeAlign(8), DataLayout("Fi64").getFunctionPtrAlign());
  24   EXPECT_EQ(MaybeAlign(1), DataLayout("Fn8").getFunctionPtrAlign());
  25   EXPECT_EQ(MaybeAlign(2), DataLayout("Fn16").getFunctionPtrAlign());
  26   EXPECT_EQ(MaybeAlign(4), DataLayout("Fn32").getFunctionPtrAlign());
  27   EXPECT_EQ(MaybeAlign(8), DataLayout("Fn64").getFunctionPtrAlign());
  28   EXPECT_EQ(DataLayout::FunctionPtrAlignType::Independent, \
  29       DataLayout("").getFunctionPtrAlignType());
  30   EXPECT_EQ(DataLayout::FunctionPtrAlignType::Independent, \
  31       DataLayout("Fi8").getFunctionPtrAlignType());
  32   EXPECT_EQ(DataLayout::FunctionPtrAlignType::MultipleOfFunctionAlign, \
  33       DataLayout("Fn8").getFunctionPtrAlignType());
  34   EXPECT_EQ(DataLayout("Fi8"), DataLayout("Fi8"));
  35   EXPECT_NE(DataLayout("Fi8"), DataLayout("Fi16"));
  36   EXPECT_NE(DataLayout("Fi8"), DataLayout("Fn8"));
  37
  38   DataLayout a(""), b("Fi8"), c("Fn8");
  39   EXPECT_NE(a, b);
  40   EXPECT_NE(a, c);
  41   EXPECT_NE(b, c);
  42
  43   a = b;
  44   EXPECT_EQ(a, b);
  45   a = c;
  46   EXPECT_EQ(a, c);
  47 }
  48
  49 TEST(DataLayoutTest, ValueOrABITypeAlignment) {
  50   const DataLayout DL("Fi8");
  51   LLVMContext Context;
  52   Type *const FourByteAlignType = Type::getInt32Ty(Context);
  53   EXPECT_EQ(Align(16),
  54             DL.getValueOrABITypeAlignment(MaybeAlign(16), FourByteAlignType));
  55   EXPECT_EQ(Align(4),
  56             DL.getValueOrABITypeAlignment(MaybeAlign(), FourByteAlignType));
  57 }
  58
  59 }  // anonymous namespace