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fix(qbe): QBE_EnsureLocal — add % prefix to bare identifiers in store/call/ret

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dimgigov
2026-06-02 13:18:15 +03:00
parent a61cd198a8
commit 6fdbc139d0
2 changed files with 42 additions and 18 deletions
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_selfhost/src/qbe_backend.bux
+21 -9
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@@ -160,6 +160,18 @@ func QBE_LocalName(name: String) -> String {
return String_Concat(prefix, name);
}
// Ensure a value used as variable/argument has % prefix for bare identifiers
func QBE_EnsureLocal(val: String) -> String {
if String_Eq(val, "") { return "0"; }
let c: char8 = val[0];
if c == 37 as char8 || c == 36 as char8 || c == 64 as char8 { return val; } // %, $, @
if c == 45 as char8 { return val; } // negative number
if c >= 48 as char8 && c <= 57 as char8 { return val; } // digit
// Bare identifier: add % prefix
var prefix: String = "%";
return String_Concat(prefix, val);
}
// ---------------------------------------------------------------------------
// String literal → data section
// ---------------------------------------------------------------------------
@@ -326,9 +338,9 @@ func QBE_EmitExpr(qbe: *QbeEmitter, node: *HirNode) -> String {
QBE_Emit(qbe, "store");
QBE_Emit(qbe, ty);
QBE_Emit(qbe, " ");
QBE_Emit(qbe, val);
QBE_Emit(qbe, QBE_EnsureLocal(val));
QBE_Emit(qbe, ", ");
QBE_EmitLine(qbe, target);
QBE_EmitLine(qbe, QBE_EnsureLocal(target));
return val;
}
@@ -526,14 +538,14 @@ func QBE_EmitExpr(qbe: *QbeEmitter, node: *HirNode) -> String {
let a1ty: String = QbeBackend_TypeWord(node.child1.typeKind);
QBE_Emit(qbe, a1ty);
QBE_Emit(qbe, " ");
QBE_Emit(qbe, arg1);
QBE_Emit(qbe, QBE_EnsureLocal(arg1));
}
if node.child2 != null as *HirNode {
let a2ty: String = QbeBackend_TypeWord(node.child2.typeKind);
QBE_Emit(qbe, ", ");
QBE_Emit(qbe, a2ty);
QBE_Emit(qbe, " ");
QBE_Emit(qbe, arg2);
QBE_Emit(qbe, QBE_EnsureLocal(arg2));
}
QBE_EmitLine(qbe, ")");
return tmp;
@@ -615,9 +627,9 @@ func QBE_EmitStmt(qbe: *QbeEmitter, node: *HirNode) {
QBE_Emit(qbe, "store");
QBE_Emit(qbe, varTy);
QBE_Emit(qbe, " ");
QBE_Emit(qbe, val);
QBE_Emit(qbe, QBE_EnsureLocal(val));
QBE_Emit(qbe, ", ");
QBE_EmitLine(qbe, varName);
QBE_EmitLine(qbe, QBE_EnsureLocal(varName));
}
return;
}
@@ -631,9 +643,9 @@ func QBE_EmitStmt(qbe: *QbeEmitter, node: *HirNode) {
QBE_Emit(qbe, "store");
QBE_Emit(qbe, ty);
QBE_Emit(qbe, " ");
QBE_Emit(qbe, val);
QBE_Emit(qbe, QBE_EnsureLocal(val));
QBE_Emit(qbe, ", ");
QBE_EmitLine(qbe, target);
QBE_EmitLine(qbe, QBE_EnsureLocal(target));
return;
}
@@ -642,7 +654,7 @@ func QBE_EmitStmt(qbe: *QbeEmitter, node: *HirNode) {
let val: String = QBE_EmitExpr(qbe, node.child1);
QBE_EmitIndent(qbe);
QBE_Emit(qbe, "ret ");
QBE_EmitLine(qbe, val);
QBE_EmitLine(qbe, QBE_EnsureLocal(val));
} else {
QBE_EmitIndent(qbe);
QBE_EmitLine(qbe, "ret");