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codegen for cancel

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See #727
This commit is contained in:
Andrew Kelley 2018-02-25 14:47:58 -05:00
parent 05bf666eb6
commit 7567448b91
2 changed files with 19 additions and 1 deletions
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1
src/all_types.hpp
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@ -1609,6 +1609,7 @@ struct CodeGen {
LLVMValueRef trap_fn_val;
LLVMValueRef return_address_fn_val;
LLVMValueRef frame_address_fn_val;
LLVMValueRef coro_destroy_fn_val;
bool error_during_imports;
const char **clang_argv;

19
src/codegen.cpp
View File

@ -927,6 +927,21 @@ static LLVMValueRef get_memcpy_fn_val(CodeGen *g) {
return g->memcpy_fn_val;
}
static LLVMValueRef get_coro_destroy_fn_val(CodeGen *g) {
if (g->coro_destroy_fn_val)
return g->coro_destroy_fn_val;
LLVMTypeRef param_types[] = {
LLVMPointerType(LLVMInt8Type(), 0),
};
LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), param_types, 1, false);
Buf *name = buf_sprintf("llvm.coro.destroy");
g->coro_destroy_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
assert(LLVMGetIntrinsicID(g->coro_destroy_fn_val));
return g->coro_destroy_fn_val;
}
static LLVMValueRef get_return_address_fn_val(CodeGen *g) {
if (g->return_address_fn_val)
return g->return_address_fn_val;
@ -3113,7 +3128,9 @@ static LLVMValueRef ir_render_error_return_trace(CodeGen *g, IrExecutable *execu
}
static LLVMValueRef ir_render_cancel(CodeGen *g, IrExecutable *executable, IrInstructionCancel *instruction) {
zig_panic("TODO ir_render_cancel");
LLVMValueRef target_handle = ir_llvm_value(g, instruction->target);
LLVMBuildCall(g->builder, get_coro_destroy_fn_val(g), &target_handle, 1, "");
return nullptr;
}
static LLVMValueRef ir_render_get_implicit_allocator(CodeGen *g, IrExecutable *executable, IrInstructionGetImplicitAllocator *instruction) {