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await sets the await bit

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This commit is contained in:
Andrew Kelley 2018-07-27 17:47:15 -04:00
parent 0b7a9c0722
commit 341bd0dfa4
1 changed files with 10 additions and 6 deletions
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16
src/ir.cpp
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@ -6791,9 +6791,15 @@ static IrInstruction *ir_gen_await_expr(IrBuilder *irb, Scope *scope, AstNode *n
atomic_state_field_name);
IrInstruction *const_bool_false = ir_build_const_bool(irb, scope, node, false);
IrInstruction *undefined_value = ir_build_const_undefined(irb, scope, node);
IrInstruction *usize_type_val = ir_build_const_type(irb, scope, node, irb->codegen->builtin_types.entry_usize);
IrInstruction *zero = ir_build_const_usize(irb, scope, node, 0);
IrInstruction *inverted_ptr_mask = ir_build_const_usize(irb, scope, node, 0x7); // 0b111
IrInstruction *ptr_mask = ir_build_un_op(irb, scope, node, IrUnOpBinNot, inverted_ptr_mask); // 0b111...000
IrInstruction *await_mask = ir_build_const_usize(irb, scope, node, 0x4); // 0b100
VariableTableEntry *result_var = ir_create_var(irb, node, scope, nullptr,
false, false, true, const_bool_false);
IrInstruction *undefined_value = ir_build_const_undefined(irb, scope, node);
IrInstruction *target_promise_type = ir_build_typeof(irb, scope, node, target_inst);
IrInstruction *promise_result_type = ir_build_promise_result_type(irb, scope, node, target_promise_type);
ir_build_await_bookkeeping(irb, scope, node, promise_result_type);
@ -6801,14 +6807,12 @@ static IrInstruction *ir_gen_await_expr(IrBuilder *irb, Scope *scope, AstNode *n
IrInstruction *my_result_var_ptr = ir_build_var_ptr(irb, scope, node, result_var);
ir_build_store_ptr(irb, scope, node, result_ptr_field_ptr, my_result_var_ptr);
IrInstruction *save_token = ir_build_coro_save(irb, scope, node, irb->exec->coro_handle);
IrInstruction *usize_type_val = ir_build_const_type(irb, scope, node, irb->codegen->builtin_types.entry_usize);
IrInstruction *coro_handle_addr = ir_build_ptr_to_int(irb, scope, node, irb->exec->coro_handle);
IrInstruction *mask_bits = ir_build_bin_op(irb, scope, node, IrBinOpBinOr, coro_handle_addr, await_mask, false);
IrInstruction *prev_atomic_value = ir_build_atomic_rmw(irb, scope, node,
usize_type_val, atomic_state_ptr, nullptr, coro_handle_addr, nullptr,
usize_type_val, atomic_state_ptr, nullptr, mask_bits, nullptr,
AtomicRmwOp_or, AtomicOrderSeqCst);
IrInstruction *zero = ir_build_const_usize(irb, scope, node, 0);
IrInstruction *inverted_ptr_mask = ir_build_const_usize(irb, scope, node, 0x7); // 0b111
IrInstruction *ptr_mask = ir_build_un_op(irb, scope, node, IrUnOpBinNot, inverted_ptr_mask); // 0b111...000
IrInstruction *await_handle_addr = ir_build_bin_op(irb, scope, node, IrBinOpBinAnd, prev_atomic_value, ptr_mask, false);
IrInstruction *is_non_null = ir_build_bin_op(irb, scope, node, IrBinOpCmpNotEq, await_handle_addr, zero, false);
IrBasicBlock *yes_suspend_block = ir_create_basic_block(irb, scope, "YesSuspend");