Subzero. X8664. Fixes various small bugs.

src/IceInstX86BaseImpl.h

Index: src/IceInstX86BaseImpl.h
diff --git a/src/IceInstX86BaseImpl.h b/src/IceInstX86BaseImpl.h
index 5bcd8697a678c67ec3b19247bc0882bde3d83241..e9d3c8681650b20ac3e84e447a9b3515e33708fc 100644
--- a/src/IceInstX86BaseImpl.h
+++ b/src/IceInstX86BaseImpl.h
@@ -601,10 +601,7 @@ void InstImpl<TraitsType>::InstX86Jmp::emitIAS(const Cfg *Func) const {
     // NaCl trampoline calls refer to an address within the sandbox directly.
     // This is usually only needed for non-IRT builds and otherwise not very
     // portable or stable. Usually this is only done for "calls" and not jumps.
-    // TODO(jvoung): Support this when there is a lowering that actually
-    // triggers this case.
-    (void)Imm;
-    llvm::report_fatal_error("Unexpected jmp to absolute address");
+    Asm->jmp(AssemblerImmediate(Imm->getValue()));
   } else {
     llvm::report_fatal_error("Unexpected operand type");
   }