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3b52084af8
Summary: This patch re-uses the implementation of 'llvm-mc -show-inst' and makes it available to llc as 'llc -asm-show-inst'. This is necessary to test parts of MIPS32r6/MIPS64r6 without resorting to 'llc -filetype=obj' tests. For example, on MIPS32r2 and earlier we use the 'jr $rs' instruction for indirect branches and returns. On MIPS32r6, we no longer have 'jr $rs' and use 'jalr $zero, $rs' instead. The catch is that, on MIPS32r6, 'jr $rs' is an alias for 'jalr $zero, $rs' and is the preferred way of writing this instruction. As a result, all MIPS ISA's emit 'jr $rs' in their assembly output and the assembler encodes this to different opcodes according to the ISA. Using this option, we can check that the MCInst really is a JR or a JALR by matching the emitted comment. This removes the need for a 'llc -filetype=obj' test. Reviewers: rafael, dsanders Reviewed By: dsanders Subscribers: zoran.jovanovic, llvm-commits Differential Revision: http://reviews.llvm.org/D4267 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212603 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
2.1 KiB
C++
54 lines
2.1 KiB
C++
//===-- MCTargetOptionsCommandFlags.h --------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains machine code-specific flags that are shared between
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// different command line tools.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCTARGETOPTIONSCOMMANDFLAGS_H
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#define LLVM_MC_MCTARGETOPTIONSCOMMANDFLAGS_H
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#include "llvm/Support/CommandLine.h"
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#include "llvm/MC/MCTargetOptions.h"
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using namespace llvm;
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cl::opt<MCTargetOptions::AsmInstrumentation> AsmInstrumentation(
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"asm-instrumentation", cl::desc("Instrumentation of inline assembly and "
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"assembly source files"),
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cl::init(MCTargetOptions::AsmInstrumentationNone),
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cl::values(clEnumValN(MCTargetOptions::AsmInstrumentationNone, "none",
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"no instrumentation at all"),
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clEnumValN(MCTargetOptions::AsmInstrumentationAddress, "address",
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"instrument instructions with memory arguments"),
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clEnumValEnd));
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cl::opt<bool> RelaxAll("mc-relax-all",
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cl::desc("When used with filetype=obj, "
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"relax all fixups in the emitted object file"));
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cl::opt<int> DwarfVersion("dwarf-version", cl::desc("Dwarf version"),
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cl::init(0));
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cl::opt<bool> ShowMCInst("asm-show-inst",
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cl::desc("Emit internal instruction representation to "
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"assembly file"));
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static inline MCTargetOptions InitMCTargetOptionsFromFlags() {
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MCTargetOptions Options;
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Options.SanitizeAddress =
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(AsmInstrumentation == MCTargetOptions::AsmInstrumentationAddress);
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Options.MCRelaxAll = RelaxAll;
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Options.DwarfVersion = DwarfVersion;
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Options.ShowMCInst = ShowMCInst;
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return Options;
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}
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#endif
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