link:clarification & enable MachO getGlobalSymbol

This adds clarification to the getGlobalSymbol doc comments,
as well as renames the `addExternFn` function for MachO to `getGlobalSymbol`.
This function will now be called from 'src/link.zig' as well.

Finally, this also enables compiling zig's libc using LLVM even though
the `fno-LLVM` flag is given.

2 files changed, 3 insertions, 2 deletions

diff --git a/src/link/MachO.zig b/src/link/MachO.zig
index a7681e976d..0c44901d29 100644
--- a/src/link/MachO.zig
+++ b/src/link/MachO.zig
@@ -5366,7 +5366,7 @@ fn addAtomToSection(self: *MachO, atom: *Atom, match: MatchingSection) !void {
     }
 }
 
-pub fn addExternFn(self: *MachO, name: []const u8) !u32 {
+pub fn getGlobalSymbol(self: *MachO, name: []const u8) !u32 {
     const sym_name = try std.fmt.allocPrint(self.base.allocator, "_{s}", .{name});
     defer self.base.allocator.free(sym_name);
     const n_strx = try self.makeString(sym_name);
diff --git a/src/link/Wasm.zig b/src/link/Wasm.zig
index d10690142f..4357a588a1 100644
--- a/src/link/Wasm.zig
+++ b/src/link/Wasm.zig
@@ -864,7 +864,8 @@ pub fn lowerUnnamedConst(self: *Wasm, tv: TypedValue, decl_index: Module.Decl.In
     return atom.sym_index;
 }
 
-/// Returns the symbol index from the name of an intrinsic.
+/// Returns the symbol index from a symbol of which its flag is set global,
+/// such as an exported or imported symbol.
 /// If the symbol does not yet exist, creates a new one symbol instead
 /// and then returns the index to it.
 pub fn getGlobalSymbol(self: *Wasm, name: []const u8) !u32 {