bb3f5e1fed
Following discussions in #110443, and the following earlier discussions in https://lists.llvm.org/pipermail/llvm-dev/2017-October/117907.html, https://reviews.llvm.org/D38482, https://reviews.llvm.org/D38489, this PR attempts to overhaul the `TargetMachine` and `LLVMTargetMachine` interface classes. More specifically: 1. Makes `TargetMachine` the only class implemented under `TargetMachine.h` in the `Target` library. 2. `TargetMachine` contains target-specific interface functions that relate to IR/CodeGen/MC constructs, whereas before (at least on paper) it was supposed to have only IR/MC constructs. Any Target that doesn't want to use the independent code generator simply does not implement them, and returns either `false` or `nullptr`. 3. Renames `LLVMTargetMachine` to `CodeGenCommonTMImpl`. This renaming aims to make the purpose of `LLVMTargetMachine` clearer. Its interface was moved under the CodeGen library, to further emphasis its usage in Targets that use CodeGen directly. 4. Makes `TargetMachine` the only interface used across LLVM and its projects. With these changes, `CodeGenCommonTMImpl` is simply a set of shared function implementations of `TargetMachine`, and CodeGen users don't need to static cast to `LLVMTargetMachine` every time they need a CodeGen-specific feature of the `TargetMachine`. 5. More importantly, does not change any requirements regarding library linking. cc @arsenm @aeubanks
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
//===- CCStateTest.cpp ----------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/CallingConvLower.h"
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#include "llvm/CodeGen/CodeGenTargetMachineImpl.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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#include "llvm/CodeGen/TargetFrameLowering.h"
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#include "llvm/CodeGen/TargetInstrInfo.h"
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#include "llvm/CodeGen/TargetLowering.h"
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#include "llvm/CodeGen/TargetRegisterInfo.h"
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#include "llvm/CodeGen/TargetSubtargetInfo.h"
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#include "llvm/IR/Module.h"
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#include "llvm/MC/TargetRegistry.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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#include "MFCommon.inc"
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TEST(CCStateTest, NegativeOffsets) {
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LLVMContext Ctx;
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Module Mod("Module", Ctx);
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auto MF = createMachineFunction(Ctx, Mod);
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SmallVector<CCValAssign, 8> Locs;
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CCState Info(CallingConv::C, /*IsVarArg=*/false, *MF, Locs, Ctx,
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/*NegativeOffsets=*/true);
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ASSERT_EQ(Info.AllocateStack(1, Align(1)), -1);
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ASSERT_EQ(Info.AllocateStack(1, Align(2)), -2);
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ASSERT_EQ(Info.AllocateStack(1, Align(2)), -4);
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ASSERT_EQ(Info.AllocateStack(1, Align(1)), -5);
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ASSERT_EQ(Info.AllocateStack(2, Align(2)), -8);
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ASSERT_EQ(Info.AllocateStack(2, Align(2)), -10);
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ASSERT_EQ(Info.AllocateStack(2, Align(1)), -12);
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ASSERT_EQ(Info.AllocateStack(1, Align(1)), -13);
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ASSERT_EQ(Info.getStackSize(), 13u);
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ASSERT_EQ(Info.getAlignedCallFrameSize(), 14u);
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}
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} // namespace
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