Index: ELF/LinkerScript.cpp
===================================================================
--- ELF/LinkerScript.cpp
+++ ELF/LinkerScript.cpp
@@ -1217,8 +1217,13 @@
       setError("unknown command " + Tok);
   }
   Cmd->Phdrs = readOutputSectionPhdrs();
-  if (peek().startswith("="))
-    Cmd->Filler = readOutputSectionFiller(next().drop_front());
+  if (peek().startswith("=")) {
+    StringRef Filler = next().drop_front();
+    // GNU linkers accepts a space between '=' and fill expression.
+    if (Filler.empty())
+      Filler = next();
+    Cmd->Filler = readOutputSectionFiller(Filler);
+  }
   return Cmd;
 }
 
Index: test/ELF/linkerscript/sections-padding.s
===================================================================
--- test/ELF/linkerscript/sections-padding.s
+++ test/ELF/linkerscript/sections-padding.s
@@ -31,6 +31,11 @@
 # RUN:   | FileCheck --check-prefix=ERR2 %s
 # ERR2: invalid filler expression: 0x99XX
 
+## Check case with space between '=' and expression:
+# RUN: echo "SECTIONS { .mysec : { *(.mysec*) } = 0x1122 }" > %t.script
+# RUN: ld.lld -o %t.out --script %t.script %t
+# RUN: llvm-objdump -s %t.out | FileCheck -check-prefix=YES %s
+
 .section        .mysec.1,"a"
 .align  16
 .byte   0x66