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llvm-project/llvm/test/MC/RISCV/lla-invalid.s

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[RISCV] Add "lla" pseudo-instruction to assembler This pseudo-instruction is similar to la but uses PC-relative addressing unconditionally. This is, la is only different to lla when using -fPIC. This pseudo-instruction seems often forgotten in several specs but it is definitely mentioned in binutils opcodes/riscv-opc.c. The semantics are defined both in page 37 of the "RISC-V Reader" book but also in function macro found in gas/config/tc-riscv.c. This is a very first step towards adding PIC support for Linux in the RISC-V backend. The lla pseudo-instruction expands to a sequence of auipc + addi with a couple of pc-rel relocations where the second points to the first one. This is described in https://github.com/riscv/riscv-elf-psabi-doc/blob/master/riscv-elf.md#pc-relative-symbol-addresses For now, this patch only introduces support of that pseudo instruction at the assembler parser. Differential Revision: https://reviews.llvm.org/D49661 llvm-svn: 339314
2018-08-09 15:08:20 +08:00
# RUN: not llvm-mc -triple=riscv32 < %s 2>&1 | FileCheck %s
# RUN: not llvm-mc -triple=riscv64 < %s 2>&1 | FileCheck %s
# Non bare symbols must be rejected
lla a2, %lo(a_symbol) # CHECK: :[[@LINE]]:9: error: operand must be a bare symbol name
lla a2, %hi(a_symbol) # CHECK: :[[@LINE]]:9: error: operand must be a bare symbol name
[RISCV] Support assembling @plt symbol operands This patch allows symbols appended with @plt to parse and assemble with the R_RISCV_CALL_PLT relocation. Differential Revision: https://reviews.llvm.org/D55335 Patch by Lewis Revill. llvm-svn: 357470
2019-04-02 20:47:20 +08:00
lla a2, foo@plt # CHECK: :[[@LINE]]:17: error: '@plt' operand not valid for instruction