Revert "[mips] Add names and tests for the hardware registers"

This reverts commit r221299.

The tests

    LLVM :: MC/Disassembler/Mips/mips32.txt
    LLVM :: MC/Disassembler/Mips/mips32_le.txt

were failing.

llvm-svn: 221307

10 files changed, 8 insertions, 266 deletions

diff --git a/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp b/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
index b8562b6ca77..277850c4deb 100644
--- a/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
+++ b/llvm/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
@@ -222,8 +222,6 @@ class MipsAsmParser : public MCTargetAsmParser {
 
   int matchCPURegisterName(StringRef Symbol);
 
-  int matchHWRegsRegisterName(StringRef Symbol);
-
   int matchRegisterByNumber(unsigned RegNum, unsigned RegClass);
 
   int matchFPURegisterName(StringRef Name);
@@ -861,14 +859,6 @@ public:
     return CreateReg(Index, RegKind_FGR, RegInfo, S, E, Parser);
   }
 
-  /// Create a register that is definitely a HWReg.
-  /// This is typically only used for named registers such as $hwr_cpunum.
-  static std::unique_ptr<MipsOperand>
-  createHWRegsReg(unsigned Index, const MCRegisterInfo *RegInfo,
-                  SMLoc S, SMLoc E, MipsAsmParser &Parser) {
-    return CreateReg(Index, RegKind_HWRegs, RegInfo, S, E, Parser);
-  }
-
   /// Create a register that is definitely an FCC.
   /// This is typically only used for named registers such as $fcc0.
   static std::unique_ptr<MipsOperand>
@@ -1805,20 +1795,6 @@ int MipsAsmParser::matchCPURegisterName(StringRef Name) {
   return CC;
 }
 
-int MipsAsmParser::matchHWRegsRegisterName(StringRef Name) {
-  int CC;
-
-  CC = StringSwitch<unsigned>(Name)
-           .Case("hwr_cpunum", 0)
-           .Case("hwr_synci_step", 1)
-           .Case("hwr_cc", 2)
-           .Case("hwr_ccres", 3)
-           .Case("hwr_ulr", 29)
-           .Default(-1);
-
-  return CC;
-}
-
 int MipsAsmParser::matchFPURegisterName(StringRef Name) {
 
   if (Name[0] == 'f') {
@@ -2302,13 +2278,6 @@ MipsAsmParser::matchAnyRegisterNameWithoutDollar(OperandVector &Operands,
     return MatchOperand_Success;
   }
 
-  Index = matchHWRegsRegisterName(Identifier);
-  if (Index != -1) {
-    Operands.push_back(MipsOperand::createHWRegsReg(
-        Index, getContext().getRegisterInfo(), S, getLexer().getLoc(), *this));
-    return MatchOperand_Success;
-  }
-
   Index = matchFPURegisterName(Identifier);
   if (Index != -1) {
     Operands.push_back(MipsOperand::createFGRReg(
diff --git a/llvm/lib/Target/Mips/MipsRegisterInfo.td b/llvm/lib/Target/Mips/MipsRegisterInfo.td
index f3be37fb9c2..f20a90172a0 100644
--- a/llvm/lib/Target/Mips/MipsRegisterInfo.td
+++ b/llvm/lib/Target/Mips/MipsRegisterInfo.td
@@ -212,14 +212,8 @@ let Namespace = "Mips" in {
   // PC register
   def PC : Register<"pc">;
 
-  // Hardware registers
-  def HWR0 : MipsReg<0, "hwr_cpunum">;
-  def HWR1 : MipsReg<1, "hwr_synci_step">;
-  def HWR2 : MipsReg<2, "hwr_cc">;
-  def HWR3 : MipsReg<3, "hwr_ccres">;
-  def HWR29 : MipsReg<29, "hwr_ulr">;
-
-  foreach I = {4-28,30-31} in
+  // Hardware register $29
+  foreach I = 0-31 in
   def HWR#I : MipsReg<#I, ""#I>;
 
   // Accum registers
diff --git a/llvm/test/CodeGen/Mips/tls.ll b/llvm/test/CodeGen/Mips/tls.ll
index b7c54d8f1f0..b14ad5ba452 100644
--- a/llvm/test/CodeGen/Mips/tls.ll
+++ b/llvm/test/CodeGen/Mips/tls.ll
@@ -23,7 +23,7 @@ entry:
 ; STATIC-LABEL:   f1:
 ; STATIC:   lui     $[[R0:[0-9]+]], %tprel_hi(t1)
 ; STATIC:   addiu   $[[R1:[0-9]+]], $[[R0]], %tprel_lo(t1)
-; STATIC:   rdhwr   $3, $hwr_ulr
+; STATIC:   rdhwr   $3, $29
 ; STATIC:   addu    $[[R2:[0-9]+]], $3, $[[R1]]
 ; STATIC:   lw      $2, 0($[[R2]])
 }
@@ -51,7 +51,7 @@ entry:
 ; STATIC-LABEL:   f2:
 ; STATIC:   lui     $[[R0:[0-9]+]], %hi(__gnu_local_gp)
 ; STATIC:   addiu   $[[GP:[0-9]+]], $[[R0]], %lo(__gnu_local_gp)
-; STATIC:   rdhwr   $3, $hwr_ulr
+; STATIC:   rdhwr   $3, $29
 ; STATIC:   lw      $[[R0:[0-9]+]], %gottprel(t2)($[[GP]])
 ; STATIC:   addu    $[[R1:[0-9]+]], $3, $[[R0]]
 ; STATIC:   lw      $2, 0($[[R1]])
diff --git a/llvm/test/MC/Mips/mips-alu-instructions.s b/llvm/test/MC/Mips/mips-alu-instructions.s
index ccc81ebedea..b25394b39a6 100644
--- a/llvm/test/MC/Mips/mips-alu-instructions.s
+++ b/llvm/test/MC/Mips/mips-alu-instructions.s
@@ -94,7 +94,7 @@
 # CHECK:  move    $7, $8         # encoding: [0x21,0x38,0x00,0x01]
 # CHECK:  .set    push
 # CHECK:  .set    mips32r2
-# CHECK:  rdhwr   $5, $hwr_ulr
+# CHECK:  rdhwr   $5, $29
 # CHECK:  .set    pop            # encoding: [0x3b,0xe8,0x05,0x7c]
     add    $9,$6,$7
     add    $9,$6,17767
diff --git a/llvm/test/MC/Mips/mips-hwr-register-names.s b/llvm/test/MC/Mips/mips-hwr-register-names.s
deleted file mode 100644
index ddb03ae17f2..00000000000
--- a/llvm/test/MC/Mips/mips-hwr-register-names.s
+++ /dev/null
@@ -1,199 +0,0 @@
-# Check the hardware registers
-#
-# FIXME: Use the code generator in order to print the .set directives
-#        instead of the instruction printer.
-#
-# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r2 | \
-# RUN:      FileCheck %s
-        .set noat
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $hwr_cpunum
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x00,0x3b]
-        rdhwr     $a0,$hwr_cpunum
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $hwr_cpunum
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x00,0x3b]
-        rdhwr     $a0,$0
-
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $5, $hwr_synci_step
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x05,0x08,0x3b]
-        rdhwr     $a1,$hwr_synci_step
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $5, $hwr_synci_step
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x05,0x08,0x3b]
-        rdhwr     $a1,$1
-
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $6, $hwr_cc
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x06,0x10,0x3b]
-        rdhwr     $a2,$hwr_cc
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $6, $hwr_cc
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x06,0x10,0x3b]
-        rdhwr     $a2,$2
-
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $7, $hwr_ccres
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x07,0x18,0x3b]
-        rdhwr     $a3,$hwr_ccres
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $7, $hwr_ccres
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x07,0x18,0x3b]
-        rdhwr     $a3,$3
-
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $4
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x20,0x3b]
-        rdhwr     $a0,$4
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $5
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x28,0x3b]
-        rdhwr     $a0,$5
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $6
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x30,0x3b]
-        rdhwr     $a0,$6
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $7
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x38,0x3b]
-        rdhwr     $a0,$7
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $8
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x40,0x3b]
-        rdhwr     $a0,$8
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $9
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x48,0x3b]
-        rdhwr     $a0,$9
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $10
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x50,0x3b]
-        rdhwr     $a0,$10
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $11
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x58,0x3b]
-        rdhwr     $a0,$11
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $12
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x60,0x3b]
-        rdhwr     $a0,$12
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $13
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x68,0x3b]
-        rdhwr     $a0,$13
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $14
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x70,0x3b]
-        rdhwr     $a0,$14
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $15
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x78,0x3b]
-        rdhwr     $a0,$15
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $16
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x80,0x3b]
-        rdhwr     $a0,$16
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $17
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x88,0x3b]
-        rdhwr     $a0,$17
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $18
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x90,0x3b]
-        rdhwr     $a0,$18
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $19
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0x98,0x3b]
-        rdhwr     $a0,$19
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $20
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xa0,0x3b]
-        rdhwr     $a0,$20
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $21
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xa8,0x3b]
-        rdhwr     $a0,$21
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $22
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xb0,0x3b]
-        rdhwr     $a0,$22
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $23
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xb8,0x3b]
-        rdhwr     $a0,$23
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $24
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xc0,0x3b]
-        rdhwr     $a0,$24
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $25
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xc8,0x3b]
-        rdhwr     $a0,$25
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $26
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xd0,0x3b]
-        rdhwr     $a0,$26
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $27
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xd8,0x3b]
-        rdhwr     $a0,$27
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $28
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xe0,0x3b]
-        rdhwr     $a0,$28
-
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $hwr_ulr
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xe8,0x3b]
-        rdhwr     $a0,$hwr_ulr
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $hwr_ulr
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xe8,0x3b]
-        rdhwr     $a0,$29
-
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $30
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xf0,0x3b]
-        rdhwr     $a0,$30
-        # CHECK:      .set    push
-        # CHECK-NEXT: .set    mips32r2
-        # CHECK-NEXT: rdhwr   $4, $31
-        # CHECK-NEXT: .set    pop             # encoding: [0x7c,0x04,0xf8,0x3b]
-        rdhwr     $a0,$31
diff --git a/llvm/test/MC/Mips/mips32r2/valid.s b/llvm/test/MC/Mips/mips32r2/valid.s
index 4ef5aabb87f..2b60be5ddb5 100644
--- a/llvm/test/MC/Mips/mips32r2/valid.s
+++ b/llvm/test/MC/Mips/mips32r2/valid.s
@@ -151,12 +151,7 @@
         or        $2, 4                # CHECK: ori $2, $2, 4           # encoding: [0x34,0x42,0x00,0x04]
         pause                          # CHECK: pause # encoding:  [0x00,0x00,0x01,0x40]
         pref      1, 8($5)             # CHECK: pref 1, 8($5)           # encoding: [0xcc,0xa1,0x00,0x08]
-        # FIXME: Use the code generator in order to print the .set directives
-        #        instead of the instruction printer.
-        rdhwr     $sp,$11              # CHECK:      .set  push
-                                       # CHECK-NEXT: .set  mips32r2
-                                       # CHECK-NEXT: rdhwr $sp, $11
-                                       # CHECK-NEXT: .set  pop          # encoding: [0x7c,0x1d,0x58,0x3b]
+        rdhwr     $sp,$11              
         rotr      $1,15                # CHECK: rotr $1, $1, 15         # encoding: [0x00,0x21,0x0b,0xc2]
         rotr      $1,$14,15            # CHECK: rotr $1, $14, 15        # encoding: [0x00,0x2e,0x0b,0xc2]
         rotrv     $1,$14,$15           # CHECK: rotrv $1, $14, $15      # encoding: [0x01,0xee,0x08,0x46]
diff --git a/llvm/test/MC/Mips/mips32r6/valid.s b/llvm/test/MC/Mips/mips32r6/valid.s
index 362785ba7ef..37e3cb85d4a 100644
--- a/llvm/test/MC/Mips/mips32r6/valid.s
+++ b/llvm/test/MC/Mips/mips32r6/valid.s
@@ -119,12 +119,6 @@
         msubf.s $f2,$f3,$f4      # CHECK: msubf.s $f2, $f3, $f4  # encoding: [0x46,0x04,0x18,0x99]
         msubf.d $f2,$f3,$f4      # CHECK: msubf.d $f2, $f3, $f4  # encoding: [0x46,0x24,0x18,0x99]
         pref    1, 8($5)         # CHECK: pref 1, 8($5)          # encoding: [0x7c,0xa1,0x04,0x35]
-        # FIXME: Use the code generator in order to print the .set directives
-        #        instead of the instruction printer.
-        rdhwr   $sp,$11          # CHECK:      .set  push
-                                 # CHECK-NEXT: .set  mips32r2
-                                 # CHECK-NEXT: rdhwr $sp, $11
-                                 # CHECK-NEXT: .set  pop      # encoding: [0x7c,0x1d,0x58,0x3b]
         sel.d   $f0,$f1,$f2      # CHECK: sel.d $f0, $f1, $f2 # encoding: [0x46,0x22,0x08,0x10]
         sel.s   $f0,$f1,$f2      # CHECK: sel.s $f0, $f1, $f2 # encoding: [0x46,0x02,0x08,0x10]
         seleqz  $2,$3,$4         # CHECK: seleqz $2, $3, $4 # encoding: [0x00,0x64,0x10,0x35]
diff --git a/llvm/test/MC/Mips/mips64-alu-instructions.s b/llvm/test/MC/Mips/mips64-alu-instructions.s
index 262805a5146..19ed1ffad1c 100644
--- a/llvm/test/MC/Mips/mips64-alu-instructions.s
+++ b/llvm/test/MC/Mips/mips64-alu-instructions.s
@@ -87,7 +87,7 @@
 # CHECK:  move    $7, $8         # encoding: [0x2d,0x38,0x00,0x01]
 # CHECK:  .set    push
 # CHECK:  .set    mips32r2
-# CHECK:  rdhwr   $5, $hwr_ulr
+# CHECK:  rdhwr   $5, $29
 # CHECK:  .set    pop            # encoding: [0x3b,0xe8,0x05,0x7c]
 
     dadd    $9,$6,$7
diff --git a/llvm/test/MC/Mips/mips64r2/valid.s b/llvm/test/MC/Mips/mips64r2/valid.s
index 77172380bdf..b846cf818f0 100644
--- a/llvm/test/MC/Mips/mips64r2/valid.s
+++ b/llvm/test/MC/Mips/mips64r2/valid.s
@@ -213,12 +213,7 @@
         or        $2, 4                # CHECK: ori $2, $2, 4           # encoding: [0x34,0x42,0x00,0x04]
         pause                          # CHECK: pause # encoding:  [0x00,0x00,0x01,0x40]
         pref      1, 8($5)             # CHECK: pref 1, 8($5)           # encoding: [0xcc,0xa1,0x00,0x08]
-        # FIXME: Use the code generator in order to print the .set directives
-        #        instead of the instruction printer.
-        rdhwr     $sp,$11              # CHECK:      .set  push
-                                       # CHECK-NEXT: .set  mips32r2
-                                       # CHECK-NEXT: rdhwr $sp, $11
-                                       # CHECK-NEXT: .set  pop          # encoding: [0x7c,0x1d,0x58,0x3b]
+        rdhwr     $sp,$11
         rotr      $1,15                # CHECK: rotr $1, $1, 15         # encoding: [0x00,0x21,0x0b,0xc2]
         rotr      $1,$14,15            # CHECK: rotr $1, $14, 15        # encoding: [0x00,0x2e,0x0b,0xc2]
         rotrv     $1,$14,$15           # CHECK: rotrv $1, $14, $15      # encoding: [0x01,0xee,0x08,0x46]
diff --git a/llvm/test/MC/Mips/mips64r6/valid.s b/llvm/test/MC/Mips/mips64r6/valid.s
index 3e8fc415626..bd583a253b8 100644
--- a/llvm/test/MC/Mips/mips64r6/valid.s
+++ b/llvm/test/MC/Mips/mips64r6/valid.s
@@ -155,12 +155,6 @@
         seleqz.d $f0, $f2, $f4   # CHECK: seleqz.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x14]
         selnez.s $f0, $f2, $f4   # CHECK: selnez.s $f0, $f2, $f4 # encoding: [0x46,0x04,0x10,0x17]
         selnez.d $f0, $f2, $f4   # CHECK: selnez.d $f0, $f2, $f4 # encoding: [0x46,0x24,0x10,0x17]
-        # FIXME: Use the code generator in order to print the .set directives
-        #        instead of the instruction printer.
-        rdhwr   $sp,$11          # CHECK:      .set  push
-                                 # CHECK-NEXT: .set  mips32r2
-                                 # CHECK-NEXT: rdhwr $sp, $11
-                                 # CHECK-NEXT: .set  pop         # encoding: [0x7c,0x1d,0x58,0x3b]
         rint.s $f2, $f4          # CHECK: rint.s $f2, $f4        # encoding: [0x46,0x00,0x20,0x9a]
         rint.d $f2, $f4          # CHECK: rint.d $f2, $f4        # encoding: [0x46,0x20,0x20,0x9a]
         class.s $f2, $f4         # CHECK: class.s $f2, $f4       # encoding: [0x46,0x00,0x20,0x9b]