[dev.ssa] cmd/compile: add likely annotations to blocks in html

This was missing from CL 13472
due to a badly synced client.

Change-Id: If59fc669125dd1caa335dacfbf0f8dbd7b074312
Reviewed-on: https://go-review.googlesource.com/13639Reviewed-by: Keith Randall <khr@golang.org>

src/cmd/compile/internal/ssa/html.go

@@ -389,6 +389,12 @@ func (b *Block) LongHTML() string {
 			s += " " + c.HTML()
 		}
 	}
+	switch b.Likely {
+	case BranchUnlikely:
+		s += " (unlikely)"
+	case BranchLikely:
+		s += " (likely)"
+	}
 	return s
 }