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better coroutine codegen, now passing first coro test

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we have to use the Suspend block with llvm.coro.end to
return from the coro
This commit is contained in:
Andrew Kelley
2018-02-28 18:22:43 -05:00
parent ad2a29ccf2
commit 58dc2b719c
3 changed files with 20 additions and 8 deletions
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9
src/ir.cpp
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@@ -6225,19 +6225,14 @@ bool ir_gen(CodeGen *codegen, AstNode *node, Scope *scope, IrExecutable *ir_exec
ir_build_call(irb, scope, node, nullptr, free_fn, arg_count, args, false, FnInlineAuto, false, nullptr);
IrBasicBlock *resume_block = ir_create_basic_block(irb, scope, "Resume");
IrBasicBlock *return_block = ir_create_basic_block(irb, scope, "Return");
ir_build_cond_br(irb, scope, node, resume_awaiter, resume_block, return_block, const_bool_false);
ir_build_cond_br(irb, scope, node, resume_awaiter, resume_block, irb->exec->coro_suspend_block, const_bool_false);
ir_set_cursor_at_end_and_append_block(irb, resume_block);
IrInstruction *unwrapped_await_handle_ptr = ir_build_unwrap_maybe(irb, scope, node,
irb->exec->coro_awaiter_field_ptr, false);
IrInstruction *awaiter_handle = ir_build_load_ptr(irb, scope, node, unwrapped_await_handle_ptr);
ir_build_coro_resume(irb, scope, node, awaiter_handle);
ir_build_br(irb, scope, node, return_block, const_bool_false);
ir_set_cursor_at_end_and_append_block(irb, return_block);
IrInstruction *undef = ir_build_const_undefined(irb, scope, node);
ir_build_return(irb, scope, node, undef);
ir_build_br(irb, scope, node, irb->exec->coro_suspend_block, const_bool_false);
}
return true;