motiejus/zig
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implementation of await

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but it has bugs
This commit is contained in:
Andrew Kelley
2018-03-01 03:28:13 -05:00
parent 834e992a7c
commit 253d988e7c
7 changed files with 266 additions and 23 deletions
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32
src/codegen.cpp
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@@ -1081,6 +1081,23 @@ static LLVMValueRef get_coro_save_fn_val(CodeGen *g) {
return g->coro_save_fn_val;
}
static LLVMValueRef get_coro_promise_fn_val(CodeGen *g) {
if (g->coro_promise_fn_val)
return g->coro_promise_fn_val;
LLVMTypeRef param_types[] = {
LLVMPointerType(LLVMInt8Type(), 0),
LLVMInt32Type(),
LLVMInt1Type(),
};
LLVMTypeRef fn_type = LLVMFunctionType(LLVMPointerType(LLVMInt8Type(), 0), param_types, 3, false);
Buf *name = buf_sprintf("llvm.coro.promise");
g->coro_promise_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
assert(LLVMGetIntrinsicID(g->coro_promise_fn_val));
return g->coro_promise_fn_val;
}
static LLVMValueRef get_return_address_fn_val(CodeGen *g) {
if (g->return_address_fn_val)
return g->return_address_fn_val;
@@ -4002,6 +4019,16 @@ static LLVMValueRef ir_render_coro_save(CodeGen *g, IrExecutable *executable, Ir
return LLVMBuildCall(g->builder, get_coro_save_fn_val(g), &coro_handle, 1, "");
}
static LLVMValueRef ir_render_coro_promise(CodeGen *g, IrExecutable *executable, IrInstructionCoroPromise *instruction) {
LLVMValueRef coro_handle = ir_llvm_value(g, instruction->coro_handle);
LLVMValueRef params[] = {
coro_handle,
LLVMConstInt(LLVMInt32Type(), get_coro_frame_align_bytes(g), false),
LLVMConstNull(LLVMInt1Type()),
};
return LLVMBuildCall(g->builder, get_coro_promise_fn_val(g), params, 3, "");
}
static LLVMValueRef get_coro_alloc_helper_fn_val(CodeGen *g, LLVMTypeRef alloc_fn_type_ref, TypeTableEntry *fn_type) {
if (g->coro_alloc_helper_fn_val != nullptr)
return g->coro_alloc_helper_fn_val;
@@ -4064,7 +4091,7 @@ static LLVMValueRef get_coro_alloc_helper_fn_val(CodeGen *g, LLVMTypeRef alloc_f
LLVMValueRef coro_size = LLVMGetParam(fn_val, next_arg);
next_arg += 1;
LLVMValueRef alignment_val = LLVMConstInt(g->builtin_types.entry_u29->type_ref,
2 * g->pointer_size_bytes, false);
get_coro_frame_align_bytes(g), false);
ZigList<LLVMValueRef> args = {};
args.append(sret_ptr);
@@ -4218,6 +4245,7 @@ static LLVMValueRef ir_render_instruction(CodeGen *g, IrExecutable *executable,
case IrInstructionIdTagType:
case IrInstructionIdExport:
case IrInstructionIdErrorUnion:
case IrInstructionIdPromiseResultType:
zig_unreachable();
case IrInstructionIdReturn:
@@ -4360,6 +4388,8 @@ static LLVMValueRef ir_render_instruction(CodeGen *g, IrExecutable *executable,
return ir_render_coro_resume(g, executable, (IrInstructionCoroResume *)instruction);
case IrInstructionIdCoroSave:
return ir_render_coro_save(g, executable, (IrInstructionCoroSave *)instruction);
case IrInstructionIdCoroPromise:
return ir_render_coro_promise(g, executable, (IrInstructionCoroPromise *)instruction);
case IrInstructionIdCoroAllocHelper:
return ir_render_coro_alloc_helper(g, executable, (IrInstructionCoroAllocHelper *)instruction);
case IrInstructionIdAtomicRmw: