62ba528a68
With XPLINK, a no-op with information about the call type is emitted after each call instruction. Centralizing it has the advantage that it is easy to document all cases, and it makes it easier to extend it later (e.g. dynamic stack allocation, 32 bit mode). Also add a test checking the call types emitted so far. Reviewed By: uweigand Differential Revision: https://reviews.llvm.org/D119557
77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
//===-- SystemZAsmPrinter.h - SystemZ LLVM assembly printer ----*- C++ -*--===//
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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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#ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZASMPRINTER_H
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#define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZASMPRINTER_H
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#include "SystemZMCInstLower.h"
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#include "SystemZTargetMachine.h"
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#include "SystemZTargetStreamer.h"
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#include "llvm/CodeGen/AsmPrinter.h"
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#include "llvm/CodeGen/StackMaps.h"
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#include "llvm/MC/MCInstBuilder.h"
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#include "llvm/Support/Compiler.h"
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namespace llvm {
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class MCStreamer;
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class MachineInstr;
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class Module;
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class raw_ostream;
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class LLVM_LIBRARY_VISIBILITY SystemZAsmPrinter : public AsmPrinter {
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private:
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StackMaps SM;
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SystemZTargetStreamer *getTargetStreamer() {
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MCTargetStreamer *TS = OutStreamer->getTargetStreamer();
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assert(TS && "do not have a target streamer");
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return static_cast<SystemZTargetStreamer *>(TS);
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}
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/// Call type information for XPLINK.
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enum class CallType {
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BASR76 = 0, // b'x000' == BASR r7,r6
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BRAS7 = 1, // b'x001' == BRAS r7,ep
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RESVD_2 = 2, // b'x010'
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BRASL7 = 3, // b'x011' == BRASL r7,ep
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RESVD_4 = 4, // b'x100'
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RESVD_5 = 5, // b'x101'
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BALR1415 = 6, // b'x110' == BALR r14,r15
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BASR33 = 7, // b'x111' == BASR r3,r3
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};
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public:
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SystemZAsmPrinter(TargetMachine &TM, std::unique_ptr<MCStreamer> Streamer)
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: AsmPrinter(TM, std::move(Streamer)), SM(*this) {}
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// Override AsmPrinter.
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StringRef getPassName() const override { return "SystemZ Assembly Printer"; }
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void emitInstruction(const MachineInstr *MI) override;
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void emitMachineConstantPoolValue(MachineConstantPoolValue *MCPV) override;
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void emitEndOfAsmFile(Module &M) override;
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bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
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const char *ExtraCode, raw_ostream &OS) override;
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bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
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const char *ExtraCode, raw_ostream &OS) override;
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bool doInitialization(Module &M) override {
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SM.reset();
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return AsmPrinter::doInitialization(M);
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}
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void emitFunctionEntryLabel() override;
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private:
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void emitCallInformation(CallType CT);
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void LowerFENTRY_CALL(const MachineInstr &MI, SystemZMCInstLower &MCIL);
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void LowerSTACKMAP(const MachineInstr &MI);
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void LowerPATCHPOINT(const MachineInstr &MI, SystemZMCInstLower &Lower);
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};
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} // end namespace llvm
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#endif
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