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stage2 astgen: make asm outputs count as referencing vars

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This is temporary and putting this as a seperate commit
so that it can easily be reverted as andrewrk suggested.
This commit is contained in:
Jacob G-W 2021-06-09 16:59:20 -04:00 committed by Andrew Kelley
parent 796b420092
commit f8b8f50b63
1 changed files with 27 additions and 0 deletions
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27
src/AstGen.zig
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@ -6472,6 +6472,33 @@ fn asmExpr(
// issues and decide how to handle outputs. Do we want this to be identifiers?
// Or maybe we want to force this to be expressions with a pointer type.
// Until that is figured out this is only hooked up for referencing Decls.
// TODO we have put this as an identifier lookup just so that we don't get
// unused vars for outputs. We need to check if this is correct in the future ^^
// so we just put in this simple lookup. This is a workaround.
{
var s = scope;
while (true) switch (s.tag) {
.local_val => {
const local_val = s.cast(Scope.LocalVal).?;
if (local_val.name == str_index) {
local_val.used = true;
break;
}
s = local_val.parent;
},
.local_ptr => {
const local_ptr = s.cast(Scope.LocalPtr).?;
if (local_ptr.name == str_index) {
local_ptr.used = true;
break;
}
s = local_ptr.parent;
},
.gen_zir => s = s.cast(GenZir).?.parent,
.defer_normal, .defer_error => s = s.cast(Scope.Defer).?.parent,
.namespace, .top => break,
};
}
const operand = try gz.addStrTok(.decl_ref, str_index, ident_token);
outputs[i] = .{
.name = name,