mirror/zig
1
0
Fork 0
mirror of https://github.com/ziglang/zig.git synced 2026-02-19 07:48:31 +00:00
Code Issues Packages Projects Releases Wiki Activity

codegen for coro_resume instruction

Browse Source 
See #727
This commit is contained in:
Andrew Kelley 2018-02-25 17:34:05 -05:00
parent 4eac75914b
commit 83f8906449
3 changed files with 25 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/all_types.hpp
View File

@ -1617,6 +1617,7 @@ struct CodeGen {
LLVMValueRef coro_suspend_fn_val;
LLVMValueRef coro_end_fn_val;
LLVMValueRef coro_free_fn_val;
LLVMValueRef coro_resume_fn_val;
bool error_during_imports;
const char **clang_argv;

18
src/codegen.cpp
View File

@ -1051,6 +1051,21 @@ static LLVMValueRef get_coro_free_fn_val(CodeGen *g) {
return g->coro_free_fn_val;
}
static LLVMValueRef get_coro_resume_fn_val(CodeGen *g) {
if (g->coro_resume_fn_val)
return g->coro_resume_fn_val;
LLVMTypeRef param_types[] = {
LLVMPointerType(LLVMInt8Type(), 0),
};
LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), param_types, 1, false);
Buf *name = buf_sprintf("llvm.coro.resume");
g->coro_resume_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
assert(LLVMGetIntrinsicID(g->coro_resume_fn_val));
return g->coro_resume_fn_val;
}
static LLVMValueRef get_return_address_fn_val(CodeGen *g) {
if (g->return_address_fn_val)
return g->return_address_fn_val;
@ -3935,7 +3950,8 @@ static LLVMValueRef ir_render_coro_free(CodeGen *g, IrExecutable *executable, Ir
}
static LLVMValueRef ir_render_coro_resume(CodeGen *g, IrExecutable *executable, IrInstructionCoroResume *instruction) {
zig_panic("TODO ir_render_coro_resume");
LLVMValueRef awaiter_handle = ir_llvm_value(g, instruction->awaiter_handle);
return LLVMBuildCall(g->builder, get_coro_resume_fn_val(g), &awaiter_handle, 1, "");
}
static void set_debug_location(CodeGen *g, IrInstruction *instruction) {

9
src/ir.cpp
View File

@ -6143,14 +6143,19 @@ bool ir_gen(CodeGen *codegen, AstNode *node, Scope *scope, IrExecutable *ir_exec
ir_set_cursor_at_end_and_append_block(irb, end_free_block);
IrBasicBlock *resume_block = ir_create_basic_block(irb, scope, "Resume");
ir_build_cond_br(irb, scope, node, resume_awaiter, resume_block, suspend_block, const_bool_false);
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_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, suspend_block, const_bool_false);
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);
}
return true;