llvm/unittests/CodeGen/CCStateTest.cpp

   1 //===- CCStateTest.cpp ----------------------------------------------------===//
   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/CodeGen/CallingConvLower.h"
  10 #include "llvm/CodeGen/CodeGenTargetMachineImpl.h"
  11 #include "llvm/CodeGen/MachineFunction.h"
  12 #include "llvm/CodeGen/MachineModuleInfo.h"
  13 #include "llvm/CodeGen/TargetFrameLowering.h"
  14 #include "llvm/CodeGen/TargetInstrInfo.h"
  15 #include "llvm/CodeGen/TargetLowering.h"
  16 #include "llvm/CodeGen/TargetRegisterInfo.h"
  17 #include "llvm/CodeGen/TargetSubtargetInfo.h"
  18 #include "llvm/IR/Module.h"
  19 #include "llvm/MC/TargetRegistry.h"
  20 #include "gtest/gtest.h"
  21
  22 using namespace llvm;
  23
  24 namespace {
  25
  26 #include "MFCommon.inc"
  27
  28 TEST(CCStateTest, NegativeOffsets) {
  29   LLVMContext Ctx;
  30   Module Mod("Module", Ctx);
  31   auto MF = createMachineFunction(Ctx, Mod);
  32
  33   SmallVector<CCValAssign, 8> Locs;
  34   CCState Info(CallingConv::C, /*IsVarArg=*/false, *MF, Locs, Ctx,
  35                /*NegativeOffsets=*/true);
  36
  37   ASSERT_EQ(Info.AllocateStack(1, Align(1)), -1);
  38   ASSERT_EQ(Info.AllocateStack(1, Align(2)), -2);
  39   ASSERT_EQ(Info.AllocateStack(1, Align(2)), -4);
  40   ASSERT_EQ(Info.AllocateStack(1, Align(1)), -5);
  41   ASSERT_EQ(Info.AllocateStack(2, Align(2)), -8);
  42   ASSERT_EQ(Info.AllocateStack(2, Align(2)), -10);
  43   ASSERT_EQ(Info.AllocateStack(2, Align(1)), -12);
  44   ASSERT_EQ(Info.AllocateStack(1, Align(1)), -13);
  45   ASSERT_EQ(Info.getStackSize(), 13u);
  46   ASSERT_EQ(Info.getAlignedCallFrameSize(), 14u);
  47 }
  48
  49 } // namespace