[ELF] INSERT [AFTER|BEFORE]: support quoted names

Author: MaskRay

lld/ELF/ScriptParser.cpp

@@ -660,7 +660,7 @@ void ScriptParser::readSections() {
     isAfter = true;
   else if (!consume("BEFORE"))
     setError("expected AFTER/BEFORE, but got '" + next() + "'");
-  StringRef where = next();
+  StringRef where = readName();
   SmallVector<StringRef, 0> names;
   for (SectionCommand *cmd : v)
     if (auto *os = dyn_cast<OutputDesc>(cmd))

lld/test/ELF/linkerscript/insert-after.test

@@ -41,7 +41,7 @@
 
 SECTIONS { .byte : { BYTE(0) } } INSERT AFTER .data;
 
-SECTIONS { .foo.data : { *(.foo.data) } } INSERT AFTER .data;
+SECTIONS { .foo.data : { *(.foo.data) } } INSERT AFTER ".data";
 
 ## The input section .foo.text is an orphan. It will be placed in .foo.text
 SECTIONS { .foo.text : {} } INSERT AFTER .text;

lld/test/ELF/linkerscript/insert-before.test

@@ -50,4 +50,4 @@ SECTIONS { .byte : { BYTE(0) } } INSERT BEFORE .data;
 SECTIONS { .foo.data : { *(.foo.data) } } INSERT BEFORE .data;
 
 ## The input section .foo.text is an orphan. It will be placed in .foo.text
-SECTIONS { .foo.text : { x0 = .; } } INSERT BEFORE .text;
+SECTIONS { .foo.text : { x0 = .; } } INSERT BEFORE ".text";