[mips][mips64r6] Test that paired single instructions are invalid

[dsanders]

Summary

These emit the 'unknown instruction' instead of the correct error
because they have not been implemented in LLVM for any MIPS ISA.

[vmedic]

LGTM

lib/Target/Mips/Mips32r6InstrInfo.td

 // Reencoded: jr -> jalr
 // Reencoded: jr.hb -> jalr.hb
 // Reencoded: ldc2
 // Reencoded: ll, sc
 // Reencoded: lwc2
 // Reencoded: sdbbp
 // Reencoded: sdc2
 // Reencoded: swc2
-// Removed: /.ps$/, cvt.ps.s, cvt.ps.pw
 // Removed: addi
 // Removed: bc1any2, bc1any4
 // Removed: bc2[ft]
 // Removed: bc2f, bc2t
 // Removed: bgezal
 // Removed: bltzal
 // Removed: c.cond.fmt, bc1[ft]
 // Removed: div, divu

test/MC/Mips/mips64r6/invalid-mips5-wrong-error.s

+# Instructions that are invalid
+#
+# RUN: not llvm-mc %s -triple=mips64-unknown-linux -show-encoding -mcpu=mips64r6 \
+# RUN:     2>%t1
+# RUN: FileCheck %s < %t1
+
+  .set noat
+        abs.ps          $f22,$f8            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        add.ps          $f25,$f27,$f13      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        alnv.ps         $f12,$f18,$f30,$12  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.eq.ps         $fcc5,$f0,$f9       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.f.ps          $fcc6,$f11,$f11     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.le.ps         $fcc1,$f7,$f20      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.lt.ps         $f19,$f5            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.nge.ps        $f1,$f26            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.ngl.ps        $f21,$f30           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.ngle.ps       $fcc7,$f12,$f20     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.ngt.ps        $fcc5,$f30,$f6      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.ole.ps        $fcc7,$f21,$f8      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.olt.ps        $fcc3,$f7,$f16      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.seq.ps        $fcc6,$f31,$f14     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.sf.ps         $fcc6,$f4,$f6       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.ueq.ps        $fcc1,$f5,$f29      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.ule.ps        $fcc6,$f17,$f3      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.ult.ps        $fcc7,$f14,$f0      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        c.un.ps         $fcc4,$f2,$f26      # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        cvt.ps.s        $f3,$f18,$f19       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        cvt.ps.pw       $f3,$f18            # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        madd.ps         $f22,$f3,$f14,$f3   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        mov.ps          $f22,$f17           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        movf.ps         $f10,$f28,$fcc6     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        movn.ps         $f31,$f31,$s3       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        movt.ps         $f20,$f25,$fcc2     # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        movz.ps         $f18,$f17,$ra       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        msub.ps         $f12,$f14,$f29,$f17 # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        mul.ps          $f14,$f0,$f16       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        neg.ps          $f19,$f13           # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        nmadd.ps        $f27,$f4,$f9,$f25   # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        nmsub.ps        $f6,$f12,$f14,$f17  # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        pll.ps          $f25,$f9,$f30       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        plu.ps          $f1,$f26,$f29       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        pul.ps          $f9,$f30,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        puu.ps          $f24,$f9,$f2        # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction
+        sub.ps          $f5,$f14,$f26       # CHECK: :[[@LINE]]:{{[0-9]+}}: error: Unknown instruction