mirrors/Odin
1
0
Fork 0
mirror of https://github.com/odin-lang/Odin.git synced 2026-04-20 05:20:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

Improve emit store for large constants

Browse Source
This commit is contained in:
gingerBill
2022-08-11 15:19:27 +01:00
parent a5a56e061c
commit 03f683f9e7
1 changed files with 35 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
src/llvm_backend_general.cpp
View File

@@ -567,6 +567,13 @@ void lb_emit_slice_bounds_check(lbProcedure *p, Token token, lbValue low, lbValu
}
}
unsigned lb_try_get_alignment(LLVMValueRef addr_ptr, unsigned default_alignment) {
if (LLVMIsAGlobalValue(addr_ptr) || LLVMIsAAllocaInst(addr_ptr) || LLVMIsALoadInst(addr_ptr)) {
return LLVMGetAlignment(addr_ptr);
}
return default_alignment;
}
bool lb_try_update_alignment(LLVMValueRef addr_ptr, unsigned alignment) {
if (LLVMIsAGlobalValue(addr_ptr) || LLVMIsAAllocaInst(addr_ptr) || LLVMIsALoadInst(addr_ptr)) {
if (LLVMGetAlignment(addr_ptr) < alignment) {
@@ -914,16 +921,35 @@ void lb_emit_store(lbProcedure *p, lbValue ptr, lbValue value) {
enum {MAX_STORE_SIZE = 64};
if (LLVMIsALoadInst(value.value) && lb_sizeof(LLVMTypeOf(value.value)) > MAX_STORE_SIZE) {
LLVMValueRef dst_ptr = ptr.value;
LLVMValueRef src_ptr = LLVMGetOperand(value.value, 0);
src_ptr = LLVMBuildPointerCast(p->builder, src_ptr, LLVMTypeOf(dst_ptr), "");
if (lb_sizeof(LLVMTypeOf(value.value)) > MAX_STORE_SIZE) {
if (LLVMIsALoadInst(value.value)) {
LLVMValueRef dst_ptr = ptr.value;
LLVMValueRef src_ptr_original = LLVMGetOperand(value.value, 0);
LLVMValueRef src_ptr = LLVMBuildPointerCast(p->builder, src_ptr_original, LLVMTypeOf(dst_ptr), "");
LLVMBuildMemMove(p->builder,
dst_ptr, 1,
src_ptr, 1,
LLVMConstInt(LLVMInt64TypeInContext(p->module->ctx), lb_sizeof(LLVMTypeOf(value.value)), false));
return;
LLVMBuildMemMove(p->builder,
dst_ptr, lb_try_get_alignment(dst_ptr, 1),
src_ptr, lb_try_get_alignment(src_ptr_original, 1),
LLVMConstInt(LLVMInt64TypeInContext(p->module->ctx), lb_sizeof(LLVMTypeOf(value.value)), false));
return;
} else if (LLVMIsConstant(value.value)) {
lbAddr addr = lb_add_global_generated(p->module, value.type, value, nullptr);
LLVMValueRef global_data = addr.addr.value;
// make it truly private data
LLVMSetLinkage(global_data, LLVMPrivateLinkage);
LLVMSetUnnamedAddress(global_data, LLVMGlobalUnnamedAddr);
LLVMSetGlobalConstant(global_data, true);
LLVMValueRef dst_ptr = ptr.value;
LLVMValueRef src_ptr = global_data;
src_ptr = LLVMBuildPointerCast(p->builder, src_ptr, LLVMTypeOf(dst_ptr), "");
LLVMBuildMemMove(p->builder,
dst_ptr, lb_try_get_alignment(dst_ptr, 1),
src_ptr, lb_try_get_alignment(global_data, 1),
LLVMConstInt(LLVMInt64TypeInContext(p->module->ctx), lb_sizeof(LLVMTypeOf(value.value)), false));
return;
}
}
if (lb_is_type_proc_recursive(a)) {