MIPS: Use JIC/JIALC offset when possible

src/crankshaft/mips/lithium-codegen-mips.cc

Index: src/crankshaft/mips/lithium-codegen-mips.cc
diff --git a/src/crankshaft/mips/lithium-codegen-mips.cc b/src/crankshaft/mips/lithium-codegen-mips.cc
index 8be7d297d469ef0d2c875048c1e0b1f0abb91b29..ba3fc213ba1b023819642e60430733ad51ed612c 100644
--- a/src/crankshaft/mips/lithium-codegen-mips.cc
+++ b/src/crankshaft/mips/lithium-codegen-mips.cc
@@ -372,9 +372,21 @@ bool LCodeGen::GenerateJumpTable() {
     }
 
     // Add the base address to the offset previously loaded in entry_offset.
-    __ Addu(entry_offset, entry_offset,
-            Operand(ExternalReference::ForDeoptEntry(base)));
-    __ Jump(entry_offset);
+    if (IsMipsArchVariant(kMips32r6)) {
+      uint32_t lui_offset, jic_offset;
+      Assembler::UnpackTargetAddressUnsigned(
+          Operand(ExternalReference::ForDeoptEntry(base)).immediate(),
+          lui_offset, jic_offset);
+      masm()->RecordRelocInfo(
+          RelocInfo::EXTERNAL_REFERENCE,
+          Operand(ExternalReference::ForDeoptEntry(base)).immediate());
+      __ aui(entry_offset, entry_offset, lui_offset);
+      __ Jump(entry_offset, jic_offset);
+    } else {
+      __ Addu(entry_offset, entry_offset,
+              Operand(ExternalReference::ForDeoptEntry(base)));
+      __ Jump(entry_offset);
+    }
   }
   __ RecordComment("]");