[llvm] r258400 - [mips] Allowed dla instructions on 32-bit architectures.

Scott Egerton via llvm-commits llvm-commits at lists.llvm.org
Thu Jan 21 07:11:02 PST 2016


Author: s.egerton
Date: Thu Jan 21 09:11:01 2016
New Revision: 258400

URL: http://llvm.org/viewvc/llvm-project?rev=258400&view=rev
Log:
[mips] Allowed dla instructions on 32-bit architectures.

Summary:
This is now the same as the behaviour of the GNU assembler. This was done
as it is required in order to build the Linux kernel with the integrated
assembler enabled.

Reviewers: dsanders, vkalintiris

Subscribers: dsanders, llvm-commits

Differential Revision: http://reviews.llvm.org/D13594

Added:
    llvm/trunk/test/MC/Mips/macro-dla-32bit.s
Modified:
    llvm/trunk/include/llvm/MC/MCRegisterInfo.h
    llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp

Modified: llvm/trunk/include/llvm/MC/MCRegisterInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/MC/MCRegisterInfo.h?rev=258400&r1=258399&r2=258400&view=diff
==============================================================================
--- llvm/trunk/include/llvm/MC/MCRegisterInfo.h (original)
+++ llvm/trunk/include/llvm/MC/MCRegisterInfo.h Thu Jan 21 09:11:01 2016
@@ -440,6 +440,11 @@ public:
     return RegA == RegB || isSuperRegister(RegA, RegB);
   }
 
+  /// \brief Returns true if RegB is a super-register or sub-register of RegA
+  /// or if RegB == RegA.
+  bool isSuperOrSubRegisterEq(unsigned RegA, unsigned RegB) const {
+    return isSubRegisterEq(RegA, RegB) || isSuperRegister(RegA, RegB);
+  }
 };
 
 //===----------------------------------------------------------------------===//

Modified: llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp?rev=258400&r1=258399&r2=258400&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp (original)
+++ llvm/trunk/lib/Target/Mips/AsmParser/MipsAsmParser.cpp Thu Jan 21 09:11:01 2016
@@ -2180,7 +2180,8 @@ bool MipsAsmParser::loadImmediate(int64_
     UseSrcReg = true;
 
   unsigned TmpReg = DstReg;
-  if (UseSrcReg && (DstReg == SrcReg)) {
+  if (UseSrcReg &&
+      getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, SrcReg)) {
     // At this point we need AT to perform the expansions and we exit if it is
     // not available.
     unsigned ATReg = getATReg(IDLoc);
@@ -2344,7 +2345,7 @@ bool MipsAsmParser::expandLoadAddress(un
   }
 
   // dla requires 64-bit addresses.
-  if (!Is32BitAddress && !ABI.ArePtrs64bit()) {
+  if (!Is32BitAddress && !hasMips3()) {
     Error(IDLoc, "instruction requires a 64-bit architecture");
     return true;
   }
@@ -2353,6 +2354,11 @@ bool MipsAsmParser::expandLoadAddress(un
     return loadAndAddSymbolAddress(Offset.getExpr(), DstReg, BaseReg,
                                    Is32BitAddress, IDLoc, Instructions);
 
+  if (!ABI.ArePtrs64bit()) {
+    // Continue as if we had 'la' whether we had 'la' or 'dla'.
+    Is32BitAddress = true;
+  }
+
   return loadImmediate(Offset.getImm(), DstReg, BaseReg, Is32BitAddress, true,
                        IDLoc, Instructions);
 }
@@ -2383,7 +2389,9 @@ bool MipsAsmParser::loadAndAddSymbolAddr
     const MipsMCExpr *HigherExpr = MipsMCExpr::create(
         MCSymbolRefExpr::VK_Mips_HIGHER, Symbol, getContext());
 
-    if (UseSrcReg && (DstReg == SrcReg)) {
+    if (UseSrcReg &&
+        getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg,
+                                                               SrcReg)) {
       // If $rs is the same as $rd:
       // (d)la $rd, sym($rd) => lui    $at, %highest(sym)
       //                        daddiu $at, $at, %higher(sym)
@@ -2441,7 +2449,8 @@ bool MipsAsmParser::loadAndAddSymbolAddr
   //                            ori   $rd, $rd, %lo(sym)
   //                            (addu $rd, $rd, $rs)
   unsigned TmpReg = DstReg;
-  if (UseSrcReg && (DstReg == SrcReg)) {
+  if (UseSrcReg &&
+      getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, SrcReg)) {
     // If $rs is the same as $rd, we need to use AT.
     // If it is not available we exit.
     unsigned ATReg = getATReg(IDLoc);
@@ -2457,7 +2466,8 @@ bool MipsAsmParser::loadAndAddSymbolAddr
   if (UseSrcReg)
     emitRRR(Mips::ADDu, DstReg, TmpReg, SrcReg, IDLoc, Instructions);
   else
-    assert(DstReg == TmpReg);
+    assert(
+        getContext().getRegisterInfo()->isSuperOrSubRegisterEq(DstReg, TmpReg));
 
   return false;
 }

Added: llvm/trunk/test/MC/Mips/macro-dla-32bit.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/Mips/macro-dla-32bit.s?rev=258400&view=auto
==============================================================================
--- llvm/trunk/test/MC/Mips/macro-dla-32bit.s (added)
+++ llvm/trunk/test/MC/Mips/macro-dla-32bit.s Thu Jan 21 09:11:01 2016
@@ -0,0 +1,228 @@
+# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r2 | \
+# RUN:   FileCheck %s
+# RUN: llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips32r6 | \
+# RUN:   FileCheck %s
+
+.set mips64r2
+
+dla $5, 0x00000001 # CHECK: addiu $5, $zero, 1      # encoding: [0x24,0x05,0x00,0x01]
+dla $5, 0x00000002 # CHECK: addiu $5, $zero, 2      # encoding: [0x24,0x05,0x00,0x02]
+dla $5, 0x00004000 # CHECK: addiu $5, $zero, 16384  # encoding: [0x24,0x05,0x40,0x00]
+dla $5, 0x00008000 # CHECK: ori   $5, $zero, 32768  # encoding: [0x34,0x05,0x80,0x00]
+dla $5, 0xffffffff # CHECK: addiu $5, $zero, -1     # encoding: [0x24,0x05,0xff,0xff]
+dla $5, 0xfffffffe # CHECK: addiu $5, $zero, -2     # encoding: [0x24,0x05,0xff,0xfe]
+dla $5, 0xffffc000 # CHECK: addiu $5, $zero, -16384 # encoding: [0x24,0x05,0xc0,0x00]
+dla $5, 0xffff8000 # CHECK: addiu $5, $zero, -32768 # encoding: [0x24,0x05,0x80,0x00]
+
+dla $5, 0x00010000 # CHECK: lui $5, 1      # encoding: [0x3c,0x05,0x00,0x01]
+dla $5, 0x00020000 # CHECK: lui $5, 2      # encoding: [0x3c,0x05,0x00,0x02]
+dla $5, 0x40000000 # CHECK: lui $5, 16384  # encoding: [0x3c,0x05,0x40,0x00]
+dla $5, 0x80000000 # CHECK: lui $5, 32768  # encoding: [0x3c,0x05,0x80,0x00]
+dla $5, 0xffff0000 # CHECK: lui $5, 65535  # encoding: [0x3c,0x05,0xff,0xff]
+dla $5, 0xfffe0000 # CHECK: lui $5, 65534  # encoding: [0x3c,0x05,0xff,0xfe]
+dla $5, 0xc0000000 # CHECK: lui $5, 49152  # encoding: [0x3c,0x05,0xc0,0x00]
+dla $5, 0x80000000 # CHECK: lui $5, 32768  # encoding: [0x3c,0x05,0x80,0x00]
+
+dla $5, 0x00010001 # CHECK: lui $5, 1        # encoding: [0x3c,0x05,0x00,0x01]
+                   # CHECK: ori $5, $5, 1    # encoding: [0x34,0xa5,0x00,0x01]
+dla $5, 0x00020001 # CHECK: lui $5, 2        # encoding: [0x3c,0x05,0x00,0x02]
+                   # CHECK: ori $5, $5, 1    # encoding: [0x34,0xa5,0x00,0x01]
+dla $5, 0x40000001 # CHECK: lui $5, 16384    # encoding: [0x3c,0x05,0x40,0x00]
+                   # CHECK: ori $5, $5, 1    # encoding: [0x34,0xa5,0x00,0x01]
+dla $5, 0x80000001 # CHECK: lui $5, 32768    # encoding: [0x3c,0x05,0x80,0x00]
+                   # CHECK: ori $5, $5, 1    # encoding: [0x34,0xa5,0x00,0x01]
+dla $5, 0x00010002 # CHECK: lui $5, 1        # encoding: [0x3c,0x05,0x00,0x01]
+                   # CHECK: ori $5, $5, 2    # encoding: [0x34,0xa5,0x00,0x02]
+dla $5, 0x00020002 # CHECK: lui $5, 2        # encoding: [0x3c,0x05,0x00,0x02]
+                   # CHECK: ori $5, $5, 2    # encoding: [0x34,0xa5,0x00,0x02]
+dla $5, 0x40000002 # CHECK: lui $5, 16384    # encoding: [0x3c,0x05,0x40,0x00]
+                   # CHECK: ori $5, $5, 2    # encoding: [0x34,0xa5,0x00,0x02]
+dla $5, 0x80000002 # CHECK: lui $5, 32768    # encoding: [0x3c,0x05,0x80,0x00]
+                   # CHECK: ori $5, $5, 2    # encoding: [0x34,0xa5,0x00,0x02]
+dla $5, 0x00014000 # CHECK: lui $5, 1        # encoding: [0x3c,0x05,0x00,0x01]
+                   # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+dla $5, 0x00024000 # CHECK: lui $5, 2            # encoding: [0x3c,0x05,0x00,0x02]
+                   # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+dla $5, 0x40004000 # CHECK: lui $5, 16384        # encoding: [0x3c,0x05,0x40,0x00]
+                   # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+dla $5, 0x80004000 # CHECK: lui $5, 32768        # encoding: [0x3c,0x05,0x80,0x00]
+                   # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+dla $5, 0x00018000 # CHECK: lui $5, 1            # encoding: [0x3c,0x05,0x00,0x01]
+                   # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+dla $5, 0x00028000 # CHECK: lui $5, 2            # encoding: [0x3c,0x05,0x00,0x02]
+                   # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+dla $5, 0x40008000 # CHECK: lui $5, 16384        # encoding: [0x3c,0x05,0x40,0x00]
+                   # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+dla $5, 0x80008000 # CHECK: lui $5, 32768        # encoding: [0x3c,0x05,0x80,0x00]
+                   # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+dla $5, 0xffff4000 # CHECK: lui $5, 65535        # encoding: [0x3c,0x05,0xff,0xff]
+                   # CHECK: ori $5, $5, 16384    # encoding: [0x34,0xa5,0x40,0x00]
+dla $5, 0xfffe8000 # CHECK: lui $5, 65534        # encoding: [0x3c,0x05,0xff,0xfe]
+                   # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+dla $5, 0xc0008000 # CHECK: lui $5, 49152        # encoding: [0x3c,0x05,0xc0,0x00]
+                   # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+dla $5, 0x80008000 # CHECK: lui $5, 32768        # encoding: [0x3c,0x05,0x80,0x00]
+                   # CHECK: ori $5, $5, 32768    # encoding: [0x34,0xa5,0x80,0x00]
+
+dla $5, 0x00000001($6) # CHECK: addiu $5, $6, 1         # encoding: [0x24,0xc5,0x00,0x01]
+dla $5, 0x00000002($6) # CHECK: addiu $5, $6, 2         # encoding: [0x24,0xc5,0x00,0x02]
+dla $5, 0x00004000($6) # CHECK: addiu $5, $6, 16384     # encoding: [0x24,0xc5,0x40,0x00]
+dla $5, 0x00008000($6) # CHECK: ori   $5, $zero, 32768  # encoding: [0x34,0x05,0x80,0x00]
+                       # CHECK: addu $5, $5, $6         # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0xffffffff($6) # CHECK: addiu $5, $6, -1        # encoding: [0x24,0xc5,0xff,0xff]
+dla $5, 0xfffffffe($6) # CHECK: addiu $5, $6, -2        # encoding: [0x24,0xc5,0xff,0xfe]
+dla $5, 0xffffc000($6) # CHECK: addiu $5, $6, -16384    # encoding: [0x24,0xc5,0xc0,0x00]
+dla $5, 0xffff8000($6) # CHECK: addiu $5, $6, -32768    # encoding: [0x24,0xc5,0x80,0x00]
+
+dla $5, 0x00010000($6) # CHECK: lui $5, 1       # encoding: [0x3c,0x05,0x00,0x01]
+                       # CHECK: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x00020000($6) # CHECK: lui $5, 2       # encoding: [0x3c,0x05,0x00,0x02]
+                       # CHECK: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x40000000($6) # CHECK: lui $5, 16384   # encoding: [0x3c,0x05,0x40,0x00]
+                       # CHECK: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x80000000($6) # CHECK: lui $5, 32768   # encoding: [0x3c,0x05,0x80,0x00]
+                       # CHECK: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0xffff0000($6) # CHECK: lui $5, 65535   # encoding: [0x3c,0x05,0xff,0xff]
+                       # CHECK: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0xfffe0000($6) # CHECK: lui $5, 65534   # encoding: [0x3c,0x05,0xff,0xfe]
+                       # CHECK: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0xc0000000($6) # CHECK: lui $5, 49152   # encoding: [0x3c,0x05,0xc0,0x00]
+                       # CHECK: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x80000000($6) # CHECK: lui $5, 32768   # encoding: [0x3c,0x05,0x80,0x00]
+                       # CHECK: addu $5, $5, $6 # encoding: [0x00,0xa6,0x28,0x21]
+
+dla $5, 0x00010001($6) # CHECK: lui $5, 1         # encoding: [0x3c,0x05,0x00,0x01]
+                       # CHECK: ori $5, $5, 1     # encoding: [0x34,0xa5,0x00,0x01]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x00020001($6) # CHECK: lui $5, 2         # encoding: [0x3c,0x05,0x00,0x02]
+                       # CHECK: ori $5, $5, 1     # encoding: [0x34,0xa5,0x00,0x01]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x40000001($6) # CHECK: lui $5, 16384     # encoding: [0x3c,0x05,0x40,0x00]
+                       # CHECK: ori $5, $5, 1     # encoding: [0x34,0xa5,0x00,0x01]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x80000001($6) # CHECK: lui $5, 32768     # encoding: [0x3c,0x05,0x80,0x00]
+                       # CHECK: ori $5, $5, 1     # encoding: [0x34,0xa5,0x00,0x01]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x00010002($6) # CHECK: lui $5, 1         # encoding: [0x3c,0x05,0x00,0x01]
+                       # CHECK: ori $5, $5, 2     # encoding: [0x34,0xa5,0x00,0x02]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x00020002($6) # CHECK: lui $5, 2         # encoding: [0x3c,0x05,0x00,0x02]
+                       # CHECK: ori $5, $5, 2     # encoding: [0x34,0xa5,0x00,0x02]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x40000002($6) # CHECK: lui $5, 16384     # encoding: [0x3c,0x05,0x40,0x00]
+                       # CHECK: ori $5, $5, 2     # encoding: [0x34,0xa5,0x00,0x02]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x80000002($6) # CHECK: lui $5, 32768     # encoding: [0x3c,0x05,0x80,0x00]
+                       # CHECK: ori $5, $5, 2     # encoding: [0x34,0xa5,0x00,0x02]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x00014000($6) # CHECK: lui $5, 1         # encoding: [0x3c,0x05,0x00,0x01]
+                       # CHECK: ori $5, $5, 16384 # encoding: [0x34,0xa5,0x40,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x00024000($6) # CHECK: lui $5, 2         # encoding: [0x3c,0x05,0x00,0x02]
+                       # CHECK: ori $5, $5, 16384 # encoding: [0x34,0xa5,0x40,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x40004000($6) # CHECK: lui $5, 16384     # encoding: [0x3c,0x05,0x40,0x00]
+                       # CHECK: ori $5, $5, 16384 # encoding: [0x34,0xa5,0x40,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x80004000($6) # CHECK: lui $5, 32768     # encoding: [0x3c,0x05,0x80,0x00]
+                       # CHECK: ori $5, $5, 16384 # encoding: [0x34,0xa5,0x40,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x00018000($6) # CHECK: lui $5, 1         # encoding: [0x3c,0x05,0x00,0x01]
+                       # CHECK: ori $5, $5, 32768 # encoding: [0x34,0xa5,0x80,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x00028000($6) # CHECK: lui $5, 2         # encoding: [0x3c,0x05,0x00,0x02]
+                       # CHECK: ori $5, $5, 32768 # encoding: [0x34,0xa5,0x80,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x40008000($6) # CHECK: lui $5, 16384     # encoding: [0x3c,0x05,0x40,0x00]
+                       # CHECK: ori $5, $5, 32768 # encoding: [0x34,0xa5,0x80,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x80008000($6) # CHECK: lui $5, 32768     # encoding: [0x3c,0x05,0x80,0x00]
+                       # CHECK: ori $5, $5, 32768 # encoding: [0x34,0xa5,0x80,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0xffff4000($6) # CHECK: lui $5, 65535     # encoding: [0x3c,0x05,0xff,0xff]
+                       # CHECK: ori $5, $5, 16384 # encoding: [0x34,0xa5,0x40,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0xfffe8000($6) # CHECK: lui $5, 65534     # encoding: [0x3c,0x05,0xff,0xfe]
+                       # CHECK: ori $5, $5, 32768 # encoding: [0x34,0xa5,0x80,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0xc0008000($6) # CHECK: lui $5, 49152     # encoding: [0x3c,0x05,0xc0,0x00]
+                       # CHECK: ori $5, $5, 32768 # encoding: [0x34,0xa5,0x80,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+dla $5, 0x80008000($6) # CHECK: lui $5, 32768     # encoding: [0x3c,0x05,0x80,0x00]
+                       # CHECK: ori $5, $5, 32768 # encoding: [0x34,0xa5,0x80,0x00]
+                       # CHECK: addu $5, $5, $6   # encoding: [0x00,0xa6,0x28,0x21]
+# There are no further interesting immediates.
+
+symbol:           # CHECK-LABEL: symbol:
+.extern extern_sym
+.option pic0      # CHECK-LABEL: .option pic0
+dla $5, extern_sym
+
+# CHECK: lui $5, %hi(extern_sym)         # encoding: [0x3c,0x05,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym), kind: fixup_Mips_HI16
+# CHECK: addiu $5, $5, %lo(extern_sym)   # encoding: [0x24,0xa5,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym), kind: fixup_Mips_LO16
+
+dla $5, extern_sym($8)
+
+# CHECK: lui $5, %hi(extern_sym)         # encoding: [0x3c,0x05,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym), kind: fixup_Mips_HI16
+# CHECK: addiu $5, $5, %lo(extern_sym)   # encoding: [0x24,0xa5,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym), kind: fixup_Mips_LO16
+# CHECK: addu $5, $5, $8                 # encoding: [0x00,0xa8,0x28,0x21]
+
+dla $5, extern_sym($5)
+
+# CHECK: lui $1, %hi(extern_sym)         # encoding: [0x3c,0x01,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym), kind: fixup_Mips_HI16
+# CHECK: addiu $1, $1, %lo(extern_sym)   # encoding: [0x24,0x21,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym), kind: fixup_Mips_LO16
+# CHECK: addu $5, $1, $5                 # encoding: [0x00,0x25,0x28,0x21]
+
+dla $5, extern_sym+8
+
+# CHECK: lui $5, %hi(extern_sym+8)       # encoding: [0x3c,0x05,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym+8), kind: fixup_Mips_HI16
+# CHECK: addiu $5, $5, %lo(extern_sym+8) # encoding: [0x24,0xa5,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym+8), kind: fixup_Mips_LO16
+
+dla $5, extern_sym+8($8)
+
+# CHECK: lui $5, %hi(extern_sym+8)       # encoding: [0x3c,0x05,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym+8), kind: fixup_Mips_HI16
+# CHECK: addiu $5, $5, %lo(extern_sym+8) # encoding: [0x24,0xa5,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym+8), kind: fixup_Mips_LO16
+# CHECK: addu $5, $5, $8                 # encoding: [0x00,0xa8,0x28,0x21]
+
+dla $5, extern_sym-8($5)
+
+# CHECK: lui $1, %hi(extern_sym-8)       # encoding: [0x3c,0x01,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym-8), kind: fixup_Mips_HI16
+# CHECK: addiu $1, $1, %lo(extern_sym-8) # encoding: [0x24,0x21,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym-8), kind: fixup_Mips_LO16
+# CHECK: addu $5, $1, $5                 # encoding: [0x00,0x25,0x28,0x21]
+
+dla $5, extern_sym-8
+
+# CHECK: lui $5, %hi(extern_sym-8)       # encoding: [0x3c,0x05,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym-8), kind: fixup_Mips_HI16
+# CHECK: addiu $5, $5, %lo(extern_sym-8) # encoding: [0x24,0xa5,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym-8), kind: fixup_Mips_LO16
+
+dla $5, extern_sym-8($8)
+
+# CHECK: lui $5, %hi(extern_sym-8)       # encoding: [0x3c,0x05,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym-8), kind: fixup_Mips_HI16
+# CHECK: addiu $5, $5, %lo(extern_sym-8) # encoding: [0x24,0xa5,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym-8), kind: fixup_Mips_LO16
+# CHECK: addu $5, $5, $8                 # encoding: [0x00,0xa8,0x28,0x21]
+
+dla $5, extern_sym-8($5)
+
+# CHECK: lui $1, %hi(extern_sym-8)       # encoding: [0x3c,0x01,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %hi(extern_sym-8), kind: fixup_Mips_HI16
+# CHECK: addiu $1, $1, %lo(extern_sym-8) # encoding: [0x24,0x21,A,A]
+# CHECK:                                 #   fixup A - offset: 0, value: %lo(extern_sym-8), kind: fixup_Mips_LO16
+# CHECK: addu $5, $1, $5                 # encoding: [0x00,0x25,0x28,0x21]
+
+.option pic2




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