stage2 LLVM debug info

doc/langref.html.in

@@ -1317,7 +1317,7 @@ const @"identifier with spaces in it" = 0xff;
 const @"1SmallStep4Man" = 112358;
 
 const c = @import("std").c;
-pub extern "c" fn @"error"() anyopaque;
+pub extern "c" fn @"error"() void;
 pub extern "c" fn @"fstat$INODE64"(fd: c.fd_t, buf: *c.Stat) c_int;
 
 const Color = enum {

lib/std/dwarf.zig

@@ -226,6 +226,21 @@ pub const LNCT = struct {
     pub const hi_user = 0x3fff;
 };
 
+pub const CC = enum(u8) {
+    normal = 0x1,
+    program = 0x2,
+    nocall = 0x3,
+
+    pass_by_reference = 0x4,
+    pass_by_value = 0x5,
+
+    lo_user = 0x40,
+    hi_user = 0xff,
+
+    GNU_renesas_sh = 0x40,
+    GNU_borland_fastcall_i386 = 0x41,
+};
+
 const PcRange = struct {
     start: u64,
     end: u64,

src/Compilation.zig

@@ -898,7 +898,7 @@ pub fn create(gpa: Allocator, options: InitOptions) !*Compilation {
         // We put the `Compilation` itself in the arena. Freeing the arena will free the module.
         // It's initialized later after we prepare the initialization options.
         const comp = try arena.create(Compilation);
-        const root_name = try arena.dupe(u8, options.root_name);
+        const root_name = try arena.dupeZ(u8, options.root_name);
 
         const ofmt = options.object_format orelse options.target.getObjectFormat();
 

src/Sema.zig

@@ -12405,7 +12405,7 @@ fn zirTypeName(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!Ai
     var anon_decl = try block.startAnonDecl(LazySrcLoc.unneeded);
     defer anon_decl.deinit();
 
-    const bytes = try ty.nameAlloc(anon_decl.arena());
+    const bytes = try ty.nameAllocArena(anon_decl.arena());
 
     const new_decl = try anon_decl.finish(
         try Type.Tag.array_u8_sentinel_0.create(anon_decl.arena(), bytes.len),