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Compiler projects using llvm 
# Instructions that are invalid
#
# RUN: not llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips2 \
# RUN:     2>%t1
# RUN: FileCheck %s < %t1

        .set noat
        bc1f      $fcc1, 4        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: non-zero fcc register doesn't exist in current ISA level
        bc1t      $fcc1, 4        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: non-zero fcc register doesn't exist in current ISA level
        ceil.l.d  $f1,$f3         # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        ceil.l.s  $f18,$f13       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        cvt.d.l   $f4,$f16        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        cvt.l.d   $f24,$f15       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        cvt.l.s   $f11,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        cvt.s.l   $f15,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dadd      $s3,$at,$ra     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        daddi     $sp,$s4,-27705  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        daddiu    $k0,$s6,-4586   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        daddu     $s3,$at,$ra     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        ddiv      $zero,$k0,$s3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        ddivu     $zero,$s0,$s1   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dmfc1     $12,$f13        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dmtc1     $s0,$f14        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dmult     $s7,$9          # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dmultu    $a1,$a2         # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsll      $zero,$s4,$12   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsll      $zero,$s4,18    # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsll      $zero,18        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsll32    $zero,$zero,18  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsll32    $zero,18        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsllv     $zero,$s4,$12   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsra      $gp,$s2,$s3     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsra      $gp,$s2,10      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsra      $gp,10          # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsra32    $gp,$s2,10      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsra32    $gp,10          # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsrav     $gp,$s2,$s3     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsrl      $s3,$6,$s4      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsrl      $s3,$6,23       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsrl      $s3,23          # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsrl32    $s3,$6,23       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsrl32    $s3,23          # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsrlv     $s3,$14,$s4     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsub      $a3,$s6,$8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsubu     $a1,$a1,$k0     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        eret                      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        floor.l.d $f26,$f7        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        floor.l.s $f12,$f5        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        ldxc1     $f8,$s7($15)    # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        lwxc1     $f12,$s1($s8)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        lwu       $s3,-24086($v1) # CHECK: :[[@LINE]]:23: error: invalid operand for instruction
        movf      $gp,$8,$fcc0    # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movf      $gp,$8,$fcc7    # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movf.d    $f6,$f11,$fcc0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movf.d    $f6,$f11,$fcc5  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movf.s    $f23,$f5,$fcc0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movf.s    $f23,$f5,$fcc6  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movn      $v1,$s1,$s0     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movn.d    $f27,$f21,$k0   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movn.s    $f12,$f0,$s7    # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movt      $zero,$s4,$fcc0 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movt      $zero,$s4,$fcc5 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movt.d    $f0,$f2,$fcc0   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movt.s    $f30,$f2,$fcc0  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movt.s    $f30,$f2,$fcc1  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movz      $a1,$s6,$9      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movz.d    $f12,$f29,$9    # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        movz.s    $f25,$f7,$v1    # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        round.l.d $f12,$f1        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        round.l.s $f25,$f5        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        sdxc1     $f11,$10($14)   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        trunc.l.d $f23,$f23       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        trunc.l.s $f28,$f31       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled