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stage2: move link.File.ELF.SrcFn field from Module.Fn to Module.Decl 

SrcFn represents the function in the linked output file, if the
`Decl` is a function. This is stored here and not in `Fn` because `Decl`
survives across updates but `Fn` does not.

TODO Look into making `Fn` a longer lived structure and moving this field there
to save on memory usage.
master
Andrew Kelley 2020-08-03 22:22:47 -07:00
parent 0c598100d8
commit 9b3a70c8aa
2 changed files with 8 additions and 4 deletions
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10
src-self-hosted/Module.zig
View File

@ -176,6 +176,13 @@ pub const Decl = struct {
/// This is populated regardless of semantic analysis and code generation.
link: link.File.Elf.TextBlock = link.File.Elf.TextBlock.empty,
/// Represents the function in the linked output file, if the `Decl` is a function.
/// This is stored here and not in `Fn` because `Decl` survives across updates but
/// `Fn` does not.
/// TODO Look into making `Fn` a longer lived structure and moving this field there
/// to save on memory usage.
fn_link: link.File.Elf.SrcFn = link.File.Elf.SrcFn.empty,
contents_hash: std.zig.SrcHash,
/// The shallow set of other decls whose typed_value could possibly change if this Decl's
@ -280,9 +287,6 @@ pub const Fn = struct {
},
owner_decl: *Decl,
/// Represents the function in the linked output file.
link: link.File.Elf.SrcFn = link.File.Elf.SrcFn.empty,
/// This memory is temporary and points to stack memory for the duration
/// of Fn analysis.
pub const Analysis = struct {

2
src-self-hosted/link.zig
View File

@ -1922,7 +1922,7 @@ pub const File = struct {
// Now we have the full contents and may allocate a region to store it.
const debug_line_sect = &self.sections.items[self.debug_line_section_index.?];
const src_fn = &typed_value.val.cast(Value.Payload.Function).?.func.link;
const src_fn = &decl.fn_link;
if (self.dbg_line_fn_last) |last| {
if (src_fn.prev == null and src_fn.next == null) {
// Append new function.