diff --git a/src/cmd/link/internal/ld/objfile.go b/src/cmd/link/internal/ld/objfile.go
index dffb7a3d9b..566c949040 100644
--- a/src/cmd/link/internal/ld/objfile.go
+++ b/src/cmd/link/internal/ld/objfile.go
@@ -112,6 +112,8 @@ import (
 	"bytes"
 	"cmd/internal/bio"
 	"cmd/internal/obj"
+	"crypto/sha1"
+	"encoding/base64"
 	"io"
 	"log"
 	"strconv"
@@ -555,6 +557,28 @@ func (r *objReader) readSymName() string {
 				r.readFull(r.rdBuf[:n])
 			}
 			r.rdBuf = adjName[:0] // in case 2*n wasn't enough
+
+			if DynlinkingGo() {
+				// These types are included in the symbol
+				// table when dynamically linking. To keep
+				// binary size down, we replace the names
+				// with SHA-1 prefixes.
+				//
+				// Keep the type.. prefix, which parts of the
+				// linker (like the DWARF generator) know means
+				// the symbol is not decodable.
+				//
+				// Leave type.runtime. symbols alone, because
+				// other parts of the linker manipulates them.
+				if strings.HasPrefix(s, "type.") && !strings.HasPrefix(s, "type.runtime.") {
+					hash := sha1.Sum([]byte(s))
+					prefix := "type."
+					if s[5] == '.' {
+						prefix = "type.."
+					}
+					s = prefix + base64.StdEncoding.EncodeToString(hash[:6])
+				}
+			}
 			return s
 		}
 		adjName = append(adjName, origName[:i]...)