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wasm linker: don't try to lower nav zcu data before updateNav is called

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This commit is contained in:
Andrew Kelley 2025-01-08 22:18:54 -08:00
parent 21a2888561
commit 7a4d4357e8
1 changed files with 15 additions and 46 deletions
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61
src/link/Wasm.zig
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@ -178,7 +178,7 @@ preloaded_strings: PreloadedStrings,
/// This field is used when emitting an object; `navs_exe` used otherwise.
navs_obj: std.AutoArrayHashMapUnmanaged(InternPool.Nav.Index, ZcuDataObj) = .empty,
/// This field is unused when emitting an object; `navs_exe` used otherwise.
/// This field is unused when emitting an object; `navs_obj` used otherwise.
navs_exe: std.AutoArrayHashMapUnmanaged(InternPool.Nav.Index, ZcuDataExe) = .empty,
/// Tracks all InternPool values referenced by codegen. Needed for outputting
/// the data segment. This one does not track ref count because object files
@ -794,7 +794,6 @@ pub const ZcuDataExe = extern struct {
/// are populated.
const ZcuDataStarts = struct {
uavs_i: u32,
navs_i: u32,
fn init(wasm: *const Wasm) ZcuDataStarts {
const comp = wasm.base.comp;
@ -805,14 +804,12 @@ const ZcuDataStarts = struct {
fn initObj(wasm: *const Wasm) ZcuDataStarts {
return .{
.uavs_i = @intCast(wasm.uavs_obj.entries.len),
.navs_i = @intCast(wasm.navs_obj.entries.len),
};
}
fn initExe(wasm: *const Wasm) ZcuDataStarts {
return .{
.uavs_i = @intCast(wasm.uavs_exe.entries.len),
.navs_i = @intCast(wasm.navs_exe.entries.len),
};
}
@ -823,51 +820,19 @@ const ZcuDataStarts = struct {
}
fn finishObj(zds: ZcuDataStarts, wasm: *Wasm, pt: Zcu.PerThread) !void {
const zcu = wasm.base.comp.zcu.?;
const ip = &zcu.intern_pool;
var uavs_i = zds.uavs_i;
var navs_i = zds.navs_i;
while (true) {
while (navs_i < wasm.navs_obj.entries.len) : (navs_i += 1) {
const elem_nav = ip.getNav(wasm.navs_obj.keys()[navs_i]);
const elem_nav_init = switch (ip.indexToKey(elem_nav.status.fully_resolved.val)) {
.variable => |variable| variable.init,
else => elem_nav.status.fully_resolved.val,
};
// Call to `lowerZcuData` here possibly creates more entries in these tables.
wasm.navs_obj.values()[navs_i] = try lowerZcuData(wasm, pt, elem_nav_init);
}
while (uavs_i < wasm.uavs_obj.entries.len) : (uavs_i += 1) {
// Call to `lowerZcuData` here possibly creates more entries in these tables.
wasm.uavs_obj.values()[uavs_i] = try lowerZcuData(wasm, pt, wasm.uavs_obj.keys()[uavs_i]);
}
if (navs_i >= wasm.navs_obj.entries.len) break;
while (uavs_i < wasm.uavs_obj.entries.len) : (uavs_i += 1) {
// Call to `lowerZcuData` here possibly creates more entries in these tables.
wasm.uavs_obj.values()[uavs_i] = try lowerZcuData(wasm, pt, wasm.uavs_obj.keys()[uavs_i]);
}
}
fn finishExe(zds: ZcuDataStarts, wasm: *Wasm, pt: Zcu.PerThread) !void {
const zcu = wasm.base.comp.zcu.?;
const ip = &zcu.intern_pool;
var uavs_i = zds.uavs_i;
var navs_i = zds.navs_i;
while (true) {
while (navs_i < wasm.navs_exe.entries.len) : (navs_i += 1) {
const elem_nav = ip.getNav(wasm.navs_exe.keys()[navs_i]);
const elem_nav_init = switch (ip.indexToKey(elem_nav.status.fully_resolved.val)) {
.variable => |variable| variable.init,
else => elem_nav.status.fully_resolved.val,
};
// Call to `lowerZcuData` here possibly creates more entries in these tables.
const zcu_data = try lowerZcuData(wasm, pt, elem_nav_init);
assert(zcu_data.relocs.len == 0);
wasm.navs_exe.values()[navs_i].code = zcu_data.code;
}
while (uavs_i < wasm.uavs_exe.entries.len) : (uavs_i += 1) {
// Call to `lowerZcuData` here possibly creates more entries in these tables.
const zcu_data = try lowerZcuData(wasm, pt, wasm.uavs_exe.keys()[uavs_i]);
wasm.uavs_exe.values()[uavs_i].code = zcu_data.code;
}
if (navs_i >= wasm.navs_exe.entries.len) break;
while (uavs_i < wasm.uavs_exe.entries.len) : (uavs_i += 1) {
// Call to `lowerZcuData` here possibly creates more entries in these tables.
const zcu_data = try lowerZcuData(wasm, pt, wasm.uavs_exe.keys()[uavs_i]);
wasm.uavs_exe.values()[uavs_i].code = zcu_data.code;
}
}
};
@ -3135,7 +3100,7 @@ pub fn updateNav(wasm: *Wasm, pt: Zcu.PerThread, nav_index: InternPool.Nav.Index
.variable => |variable| .{ variable.init, variable.owner_nav },
else => .{ nav.status.fully_resolved.val, nav_index },
};
//log.debug("updateNav {} {}", .{ nav.fqn.fmt(ip), chased_nav_index });
//log.debug("updateNav {} {d}", .{ nav.fqn.fmt(ip), chased_nav_index });
assert(!wasm.imports.contains(chased_nav_index));
if (nav_init != .none and !Value.fromInterned(nav_init).typeOf(zcu).hasRuntimeBits(zcu)) {
@ -3149,11 +3114,15 @@ pub fn updateNav(wasm: *Wasm, pt: Zcu.PerThread, nav_index: InternPool.Nav.Index
if (is_obj) {
const zcu_data_starts: ZcuDataStarts = .initObj(wasm);
_ = try refNavObj(wasm, chased_nav_index); // Possibly creates an entry in `Wasm.navs_obj`.
const navs_i = try refNavObj(wasm, chased_nav_index);
const zcu_data = try lowerZcuData(wasm, pt, nav_init);
navs_i.value(wasm).* = zcu_data;
try zcu_data_starts.finishObj(wasm, pt);
} else {
const zcu_data_starts: ZcuDataStarts = .initExe(wasm);
_ = try refNavExe(wasm, chased_nav_index); // Possibly creates an entry in `Wasm.navs_exe`.
const navs_i = try refNavExe(wasm, chased_nav_index);
const zcu_data = try lowerZcuData(wasm, pt, nav_init);
navs_i.value(wasm).code = zcu_data.code;
try zcu_data_starts.finishExe(wasm, pt);
}
}