[AArch64] Print the immediate operand for SPACE pseudo instruction

[dmgreen]

Sounds good to me.

llvm/lib/Target/AArch64/MCTargetDesc/AArch64InstPrinter.cpp

void AArch64InstPrinter::printInst(const MCInst *MI, uint64_t Address,
 
   if (Opcode == AArch64::CompilerBarrier) {
     O << '\t' << MAI.getCommentString() << " COMPILER BARRIER";
     printAnnotation(O, Annot);
     return;
   }
 
   if (Opcode == AArch64::SPACE) {
-    O << '\t' << MAI.getCommentString() << " SPACE";
+    O << '\t' << MAI.getCommentString() << " SPACE "
+      << MI->getOperand(1).getImm();
     printAnnotation(O, Annot);
     return;
   }
 
   // Instruction TSB is specified as a one operand instruction, but 'csync' is
   // not encoded, so for printing it is treated as a special case here:
   if (Opcode == AArch64::TSB) {
     O << "\ttsb\tcsync";

llvm/test/CodeGen/AArch64/space.ll

 ; RUN: llc -mtriple aarch64               %s -o - | FileCheck %s
 ; RUN: llc -mtriple aarch64 -filetype=obj %s -o - | llvm-objdump --arch=aarch64  -d - | FileCheck %s --check-prefix=DUMP
 
 target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
 
 define dso_local void @f(i64 %v) {
 entry:
   %dummy = tail call i64 @llvm.aarch64.space(i32 32684, i64 %v)
   ret void
 }
-; CHECK: // SPACE
+; CHECK: // SPACE 32684
 ; CHECK-NEXT: ret
 ; DUMP-LABEL: <f>:
 ; DUMP-NEXT: ret
 
 declare dso_local i64 @llvm.aarch64.space(i32, i64) local_unnamed_addr #0