[LLVM] Skip dumping inline SDag children (#141359)

If they're simple enough to render inline, we don't need to dump them
again in the recursive walk.

Author: jroelofs

llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp

@@ -1165,6 +1165,9 @@ static void printrWithDepthHelper(raw_ostream &OS, const SDNode *N,
     // Don't follow chain operands.
     if (Op.getValueType() == MVT::Other)
       continue;
+    // Don't print children that were fully rendered inline.
+    if (shouldPrintInline(*Op.getNode(), G))
+      continue;
     OS << '\n';
     printrWithDepthHelper(OS, Op.getNode(), G, depth - 1, indent + 2);
   }

llvm/test/CodeGen/PowerPC/ppc64-icbt-pwr7.ll

@@ -11,9 +11,6 @@ entry:
 
 ; FIXME: Crashing is not really the correct behavior here, we really should just emit nothing
 ; CHECK: Cannot select: {{0x[0-9,a-f]+|t[0-9]+}}: ch = Prefetch
-; CHECK: {{0x[0-9,a-f]+|t[0-9]+}}: i32 = TargetConstant<0>
-; CHECK-NEXT: {{0x[0-9,a-f]+|t[0-9]+}}: i32 = TargetConstant<3>
-; CHECK-NEXT: {{0x[0-9,a-f]+|t[0-9]+}}: i32 = TargetConstant<0>
 
 }