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Compiler projects using llvm 
# Instructions that are invalid
#
# RUN: not llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips4 \
# RUN:     2>%t1
# RUN: FileCheck %s < %t1

        .set noat
        clo     $t3,$a1             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        clz     $sp,$gp             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dclo    $s2,$a2             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dclz    $s0,$t9             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        deret                       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        di      $s8                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dsbh    $v1,$t6             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        dshd    $v0,$sp             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        ei      $t6                 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        luxc1   $f19,$s6($s5)       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        madd    $s6,$t5             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        madd    $zero,$t1           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        maddu   $s3,$gp             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        maddu   $t8,$s2             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        mfc0    $a2,$14,1           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: selector must be zero for pre-MIPS32 ISAs
        mfhc1   $s8,$f24            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        msub    $s7,$k1             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        msubu   $t7,$a1             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        mtc0    $t1,$29,3           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: selector must be zero for pre-MIPS32 ISAs
        mthc1   $zero,$f16          # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        mul     $s0,$s4,$at         # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        pause                       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        seb     $t9,$t7             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        seh     $v1,$t4             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        suxc1   $f12,$k1($t5)       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled
        wsbh    $k1,$t1             # CHECK: :[[@LINE]]:{{[0-9]+}}: error: instruction requires a CPU feature not currently enabled