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elf: do not pointlessly store zerofill data for TLVs

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This commit is contained in:
Jakub Konka 2023-11-14 16:51:25 +01:00
parent e883907431
commit 4adb8f786f
1 changed files with 7 additions and 2 deletions
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9
src/link/Elf/ZigObject.zig
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@ -933,7 +933,12 @@ fn updateTlv(
{
const gop = try self.tls_variables.getOrPut(gpa, atom_ptr.atom_index);
assert(!gop.found_existing); // TODO incremental updates
gop.value_ptr.* = .{ .symbol_index = sym_index, .code = try gpa.dupe(u8, code) };
gop.value_ptr.* = .{ .symbol_index = sym_index };
// We only store the data for the TLV if it's non-zerofill.
if (elf_file.shdrs.items[shndx].sh_type != elf.SHT_NOBITS) {
gop.value_ptr.code = try gpa.dupe(u8, code);
}
}
{
@ -1514,7 +1519,7 @@ const DeclMetadata = struct {
const TlsVariable = struct {
symbol_index: Symbol.Index,
code: []const u8,
code: []const u8 = &[0]u8{},
fn deinit(tlv: *TlsVariable, allocator: Allocator) void {
allocator.free(tlv.code);