James Clarke 7a9885b553 [RISCV] Don't force Local Exec TLS for non-PIC ... Summary: Forcing Local Exec TLS requires the use of copy relocations. Copy relocations need special handling in the runtime linker when being used against TLS symbols, which is present in glibc, but not in FreeBSD nor musl, and so cannot be relied upon. Moreover, copy relocations are a hack that embed the size of an object in the ABI when it otherwise wouldn't be, and break protected symbols (which are expected to be DSO local), whilst also wasting space, thus they should be avoided whenever possible. As discussed in D70398, RISC-V should move away from forcing Local Exec, and instead use Initial Exec like other targets, with possible linker relaxation to follow. The RISC-V GCC maintainers also intend to adopt this more-conventional behaviour (see https://github.com/riscv/riscv-elf-psabi-doc/issues/122). Reviewers: asb, MaskRay Reviewed By: MaskRay Subscribers: emaste, krytarowski, hiraditya, rbar, johnrusso, simoncook, sabuasal, niosHD, kito-cheng, shiva0217, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, rkruppe, PkmX, jocewei, psnobl, benna, Jim, lenary, s.egerton, pzheng, sameer.abuasal, apazos, llvm-commits, bsdjhb Tags: #llvm Differential Revision: https://reviews.llvm.org/D70649		2019-12-03 22:04:54 +00:00
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AsmParser	[cmake] Explicitly mark libraries defined in lib/ as "Component Libraries"	2019-11-21 10:48:08 -08:00
Disassembler	[cmake] Explicitly mark libraries defined in lib/ as "Component Libraries"	2019-11-21 10:48:08 -08:00
MCTargetDesc	[cmake] Explicitly mark libraries defined in lib/ as "Component Libraries"	2019-11-21 10:48:08 -08:00
TargetInfo	[cmake] Explicitly mark libraries defined in lib/ as "Component Libraries"	2019-11-21 10:48:08 -08:00
Utils	[cmake] Explicitly mark libraries defined in lib/ as "Component Libraries"	2019-11-21 10:48:08 -08:00
CMakeLists.txt
LLVMBuild.txt
RISCV.h
RISCV.td	[RISCV] Add support for -ffixed-xX flags	2019-10-22 21:25:01 +01:00
RISCVAsmPrinter.cpp
RISCVCallingConv.td
RISCVCallLowering.cpp
RISCVCallLowering.h
RISCVExpandPseudoInsts.cpp	[RISCV] Use addi rather than add x0	2019-11-14 18:43:38 +00:00
RISCVFrameLowering.cpp	[RISCV] Handle variable sized objects with the stack need to be realigned	2019-11-16 12:39:53 +08:00
RISCVFrameLowering.h	[RISCV] Handle variable sized objects with the stack need to be realigned	2019-11-16 12:39:53 +08:00
RISCVInstrFormats.td
RISCVInstrFormatsC.td
RISCVInstrInfo.cpp	Use MCRegister in copyPhysReg	2019-11-11 14:42:33 +05:30
RISCVInstrInfo.h	Use MCRegister in copyPhysReg	2019-11-11 14:42:33 +05:30
RISCVInstrInfo.td	[RISCV] Lower llvm.trap and llvm.debugtrap	2019-10-28 09:54:33 +00:00
RISCVInstrInfoA.td
RISCVInstrInfoC.td
RISCVInstrInfoD.td	[RISCV] Handle fcopysign(f32, f64) and fcopysign(f64, f32)	2019-11-26 14:26:31 +00:00
RISCVInstrInfoF.td
RISCVInstrInfoM.td
RISCVInstructionSelector.cpp
RISCVISelDAGToDAG.cpp	Fix uninitialized variable warning. NFCI.	2019-11-13 14:40:21 +00:00
RISCVISelLowering.cpp	[RISCV] Don't force Local Exec TLS for non-PIC	2019-12-03 22:04:54 +00:00
RISCVISelLowering.h	[RISCV] Implement the TargetLowering::getRegisterByName hook	2019-11-04 11:23:54 +00:00
RISCVLegalizerInfo.cpp
RISCVLegalizerInfo.h
RISCVMachineFunctionInfo.h
RISCVMCInstLower.cpp
RISCVMergeBaseOffset.cpp
RISCVRegisterBankInfo.cpp
RISCVRegisterBankInfo.h
RISCVRegisterBanks.td
RISCVRegisterInfo.cpp	[RISCV] Handle variable sized objects with the stack need to be realigned	2019-11-16 12:39:53 +08:00
RISCVRegisterInfo.h	[RISCV] Add support for -ffixed-xX flags	2019-10-22 21:25:01 +01:00
RISCVRegisterInfo.td
RISCVSubtarget.cpp	[RISCV] Add support for -ffixed-xX flags	2019-10-22 21:25:01 +01:00
RISCVSubtarget.h	[RISCV] Add support for -ffixed-xX flags	2019-10-22 21:25:01 +01:00
RISCVSystemOperands.td
RISCVTargetMachine.cpp	Sink all InitializePasses.h includes	2019-11-13 16:34:37 -08:00
RISCVTargetMachine.h
RISCVTargetObjectFile.cpp
RISCVTargetObjectFile.h
RISCVTargetTransformInfo.cpp
RISCVTargetTransformInfo.h