Shengchen Kan 88597bc560 [MC][Bugfix] Remove redundant parameter for relaxInstruction ... Summary: Before this patch, `relaxInstruction` takes three arguments, the first argument refers to the instruction before relaxation and the third argument is the output instruction after relaxation. There are two quite strange things: 1) The first argument's type is `const MCInst &`, the third argument's type is `MCInst &`, but they may be aliased to the same variable 2) The backends of ARM, AMDGPU, RISC-V, Hexagon assume that the third argument is a fresh uninitialized `MCInst` even if `relaxInstruction` may be called like `relaxInstruction(Relaxed, STI, Relaxed)` in a loop. In this patch, we drop the thrid argument, and let `relaxInstruction` directly modify the given instruction. Also, this patch fixes the bug https://bugs.llvm.org/show_bug.cgi?id=45580, which is introduced by D77851, and breaks the assumption of ARM, AMDGPU, RISC-V, Hexagon. Reviewers: Razer6, MaskRay, jyknight, asb, luismarques, enderby, rtaylor, colinl, bcain Reviewed By: Razer6, MaskRay, bcain Subscribers: bcain, nickdesaulniers, nathanchance, wuzish, annita.zhang, arsenm, dschuff, jyknight, dylanmckay, sdardis, nemanjai, jvesely, nhaehnle, tpr, sbc100, jgravelle-google, kristof.beyls, hiraditya, aheejin, kbarton, fedor.sergeev, asb, rbar, johnrusso, simoncook, sabuasal, niosHD, jrtc27, MaskRay, zzheng, edward-jones, atanasyan, rogfer01, MartinMosbeck, brucehoult, the_o, PkmX, jocewei, Jim, lenary, s.egerton, pzheng, sameer.abuasal, apazos, luismarques, kerbowa, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D78364		2020-04-21 11:06:55 +08:00
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CMakeLists.txt
HexagonAsmBackend.cpp	[MC][Bugfix] Remove redundant parameter for relaxInstruction	2020-04-21 11:06:55 +08:00
HexagonBaseInfo.h
HexagonELFObjectWriter.cpp
HexagonFixupKinds.h
HexagonInstPrinter.cpp
HexagonInstPrinter.h
HexagonMCAsmInfo.cpp
HexagonMCAsmInfo.h
HexagonMCChecker.cpp
HexagonMCChecker.h
HexagonMCCodeEmitter.cpp
HexagonMCCodeEmitter.h
HexagonMCCompound.cpp
HexagonMCDuplexInfo.cpp
HexagonMCELFStreamer.cpp
HexagonMCELFStreamer.h
HexagonMCExpr.cpp
HexagonMCExpr.h
HexagonMCInstrInfo.cpp
HexagonMCInstrInfo.h
HexagonMCShuffler.cpp
HexagonMCShuffler.h
HexagonMCTargetDesc.cpp
HexagonMCTargetDesc.h
HexagonShuffler.cpp
HexagonShuffler.h
LLVMBuild.txt