llvm-6502/test/MC/Mips/mips64r6/valid-xfail.s
Daniel Sanders c96096cc0f [mips][mips64r6] Add b[on]vc
Summary:
This required me to implement the disassembler for MIPS64r6 since the encodings
are ambiguous with other instructions. This in turn revealed a few
assembly/disassembly bugs which I have fixed.

* da[ht]i only take two operands according to the spec, not three.
* DecodeBranchTarget2[16] correctly handles wider immediates than simm16
  * Also made non-functional change to DecodeBranchTarget and
    DecodeBranchTargetMM to keep implementation style consistent between
    them.
* Difficult encodings are handled by a custom decode method on the most
  general encoding in the group. This method will convert the MCInst to a
  different opcode if necessary.

DecodeBranchTarget is not currently the inverse of getBranchTargetOpValue
so disassembling some branch instructions emit incorrect output. This seems
to affect branches with delay slots on all MIPS ISA's. I've left this bug
for now and temporarily removed the check for the immediate on
bc[12]eqz/bc[12]nez in the MIPS32r6/MIPS64r6 tests.

jialc and jic crash the disassembler for some reason. I've left these
instructions commented out for the moment.

Depends on D3760

Reviewers: jkolek, zoran.jovanovic, vmedic

Reviewed By: vmedic

Differential Revision: http://reviews.llvm.org/D3761

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209415 91177308-0d34-0410-b5e6-96231b3b80d8
2014-05-22 11:23:21 +00:00

20 lines
1.3 KiB
ArmAsm

# Instructions that should be valid but currently fail for known reasons (e.g.
# they aren't implemented yet).
# This test is set up to XPASS if any instruction generates an encoding.
#
# RUN: not llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips64r6 | not FileCheck %s
# CHECK-NOT: encoding
# XFAIL: *
.set noat
bovc $0, $2, 4 # TODO: bovc $0, $2, 4 # encoding: [0x20,0x40,0x00,0x01]
bovc $2, $4, 4 # TODO: bovc $2, $4, 4 # encoding: [0x20,0x82,0x00,0x01]
bnvc $0, $2, 4 # TODO: bnvc $0, $2, 4 # encoding: [0x60,0x40,0x00,0x01]
bnvc $2, $4, 4 # TODO: bnvc $2, $4, 4 # encoding: [0x60,0x82,0x00,0x01]
beqc $0, $6, 256 # TODO: beqc $6, $zero, 256 # encoding: [0x20,0xc0,0x00,0x40]
beqc $5, $0, 256 # TODO: beqc $5, $zero, 256 # encoding: [0x20,0xa0,0x00,0x40]
beqc $6, $5, 256 # TODO: beqc $5, $6, 256 # encoding: [0x20,0xa6,0x00,0x40]
bnec $0, $6, 256 # TODO: bnec $6, $zero, 256 # encoding: [0x60,0xc0,0x00,0x40]
bnec $5, $0, 256 # TODO: bnec $5, $zero, 256 # encoding: [0x60,0xa0,0x00,0x40]
bnec $6, $5, 256 # TODO: bnec $5, $6, 256 # encoding: [0x60,0xa6,0x00,0x40]