diff options
Diffstat (limited to 'src/ir.cpp')
| -rw-r--r-- | src/ir.cpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/ir.cpp b/src/ir.cpp index bc3ef11481..c94efdf61f 100644 --- a/src/ir.cpp +++ b/src/ir.cpp @@ -6907,16 +6907,24 @@ static IrInstruction *ir_gen_suspend(IrBuilder *irb, Scope *parent_scope, AstNod IrBasicBlock *cleanup_block = ir_create_basic_block(irb, parent_scope, "SuspendCleanup"); IrBasicBlock *resume_block = ir_create_basic_block(irb, parent_scope, "SuspendResume"); IrBasicBlock *suspended_block = ir_create_basic_block(irb, parent_scope, "AlreadySuspended"); + IrBasicBlock *not_canceled_block = ir_create_basic_block(irb, parent_scope, "NotCanceled"); IrBasicBlock *not_suspended_block = ir_create_basic_block(irb, parent_scope, "NotAlreadySuspended"); IrInstruction *const_bool_false = ir_build_const_bool(irb, parent_scope, node, false); IrInstruction *usize_type_val = ir_build_const_type(irb, parent_scope, node, irb->codegen->builtin_types.entry_usize); + IrInstruction *is_canceled_mask = ir_build_const_usize(irb, parent_scope, node, 0x1); // 0b001 IrInstruction *is_suspended_mask = ir_build_const_usize(irb, parent_scope, node, 0x2); // 0b010 IrInstruction *zero = ir_build_const_usize(irb, parent_scope, node, 0); IrInstruction *prev_atomic_value = ir_build_atomic_rmw(irb, parent_scope, node, usize_type_val, irb->exec->atomic_state_field_ptr, nullptr, is_suspended_mask, nullptr, AtomicRmwOp_or, AtomicOrderSeqCst); + + IrInstruction *is_canceled_value = ir_build_bin_op(irb, parent_scope, node, IrBinOpBinAnd, prev_atomic_value, is_canceled_mask, false); + IrInstruction *is_canceled_bool = ir_build_bin_op(irb, parent_scope, node, IrBinOpCmpNotEq, is_canceled_value, zero, false); + ir_build_cond_br(irb, parent_scope, node, is_canceled_bool, cleanup_block, not_canceled_block, const_bool_false); + + ir_set_cursor_at_end_and_append_block(irb, not_canceled_block); IrInstruction *is_suspended_value = ir_build_bin_op(irb, parent_scope, node, IrBinOpBinAnd, prev_atomic_value, is_suspended_mask, false); IrInstruction *is_suspended_bool = ir_build_bin_op(irb, parent_scope, node, IrBinOpCmpNotEq, is_suspended_value, zero, false); ir_build_cond_br(irb, parent_scope, node, is_suspended_bool, suspended_block, not_suspended_block, const_bool_false); |