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src/codegen.cpp: @handle(): replace hacky ref chain with llvm intrinsic;

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Tracking Issue #1296 ;
This commit is contained in:
kristopher tate
2018-07-29 12:27:50 +09:00
parent 13ec5db234
commit 92cb330e16
2 changed files with 16 additions and 2 deletions
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17
src/codegen.cpp
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@@ -4146,11 +4146,24 @@ static LLVMValueRef ir_render_frame_address(CodeGen *g, IrExecutable *executable
return LLVMBuildCall(g->builder, get_frame_address_fn_val(g), &zero, 1, "");
}
static LLVMValueRef get_handle_fn_val(CodeGen *g) {
if (g->coro_frame_fn_val)
return g->coro_frame_fn_val;
LLVMTypeRef fn_type = LLVMFunctionType( LLVMPointerType(LLVMInt8Type(), 0)
, nullptr, 0, false);
Buf *name = buf_sprintf("llvm.coro.frame");
g->coro_frame_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
assert(LLVMGetIntrinsicID(g->coro_frame_fn_val));
return g->coro_frame_fn_val;
}
static LLVMValueRef ir_render_handle(CodeGen *g, IrExecutable *executable,
IrInstructionHandle *instruction)
{
LLVMValueRef ptr = ir_llvm_value(g, executable->fn_entry->ir_executable.coro_handle->other);
return LLVMBuildBitCast(g->builder, ptr, g->builtin_types.entry_promise->type_ref, "");
LLVMValueRef zero = LLVMConstNull(g->builtin_types.entry_promise->type_ref);
return LLVMBuildCall(g->builder, get_handle_fn_val(g), &zero, 0, "");
}
static LLVMValueRef render_shl_with_overflow(CodeGen *g, IrInstructionOverflowOp *instruction) {