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feat: support fallible results and scoped cleanup

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This commit is contained in:
Valdemar Høgsvig Lorenzen
2026-10-26 12:37:15 +01:00
parent cd64afbb40
commit 9058135326
15 changed files with 1732 additions and 76 deletions
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source/llvm/llvm.hon
+26 -2
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@@ -118,8 +118,32 @@ emit proc(
try io.write_all(output, " ")
try function_symbol(output, module, entry)
try io.write_all(output, "()\n")
if (result.kind != .void and result.kind != .invalid) {
try print_call(output, module, result, 0)
printable := result
operand usize := 0
if (function.result_fallible) {
shape :: module.arrays.items[usize(result.shape)]
success :: shape.fields[0]
try io.write_all(output, " %result = alloca ")
try write_type(output, module, result)
try io.write_all(output, "\n store ")
try write_type(output, module, result)
try io.write_all(output, " %r0, ptr %result\n %tag = load ")
try write_type(output, module, Type{ kind = shape.tag_type })
try io.write_all(output, ", ptr %result\n %success = icmp eq ")
try write_type(output, module, Type{ kind = shape.tag_type })
try io.write_all(output, " %tag, ")
try write_constant(output, module, success.tag)
try io.write_all(output, "\n br i1 %success, label %ok, label %error\nerror:\n call void @report(i64 -1)\n ret i32 1\nok:\n")
printable = Type{ kind = success.type, shape = success.array_type }
operand = 1
if (printable.kind != .void) {
try io.print(" %payload = getelementptr i8, ptr %result, i64 {}\n %r1 = load ", output, {shape.payload_offset})
try write_type(output, module, printable)
try io.write_all(output, ", ptr %payload\n")
}
}
if (printable.kind != .void and printable.kind != .invalid) {
try print_call(output, module, printable, operand)
try io.write_all(output, " call void @out(i32 1, ptr @newline, i64 1)\n")
}
try io.write_all(output, " call void @report(i64 -1)\n")