llvm/test/tools/llvm-objdump/ELF/RISCV/unknown-arch-attr.test

## Handle unrecognized arch attributes.
## Encode an unrecognized arch feature into an object file and try to decode it.
## The expected behavior is to ignore the unrecognized arch feature and
## continue to process the following arch features.
##
## The object file has the "rv32i2p0_x1p0_m2p0" arch feature. "x1p0" is an
## unrecognized architecture extension. llvm-objdump will ignore it and decode
## "mul" instruction correctly according to "m2p0" in the arch feature.
##
## This test cannot be assembly because the test needs an unrecognized arch
## feature and `llvm-mc` will filter out the unrecognized arch feature.

# RUN: yaml2obj %s -D BITS=32 -o %t.32.o
# RUN: llvm-objdump -d %t.32.o \
# RUN:   | FileCheck %s --check-prefixes=DISASM
# RUN: yaml2obj %s -D BITS=64 -o %t.64.o
# RUN: llvm-objdump -d %t.64.o \
# RUN:   | FileCheck %s --check-prefixes=DISASM

# DISASM: mul a0, a1, a2

--- !ELF
FileHeader:
  Class:   ELFCLASS[[BITS]]
  Data:    ELFDATA2LSB
  Type:    ET_REL
  Machine: EM_RISCV
Sections:
  - Name:    .text
    Type:    SHT_PROGBITS
    Flags:   [ SHF_ALLOC, SHF_EXECINSTR ]
## The content is the encoding of "mul a0, a1, a2".
## The encoding could be decoded only when the "m" extension is enabled.
    Content: 3385C502
  - Name:    .riscv.attributes
    Type:    SHT_RISCV_ATTRIBUTES
## The content is the encoding of the arch feature "rv32i2p0_x1p0_m2p0"
    Content: 412300000072697363760001190000000572763332693270305F783170305F6D32703000