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Do not need an extra local copy for the slices

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gingerBill
2025-09-28 23:32:37 +01:00
parent 6db8943efa
commit dd15a5bc8e
1 changed files with 18 additions and 9 deletions
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src/llvm_backend_const.cpp
+11 -2
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@@ -808,16 +808,25 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, lb
unsigned alignment = cast(unsigned)gb_max(type_align_of(t), 16); unsigned alignment = cast(unsigned)gb_max(type_align_of(t), 16);
bool do_local_copy = false;
if (do_local_copy) {
array_data = llvm_alloca(p, llvm_type, alignment);
LLVMValueRef local_copy = llvm_alloca(p, LLVMTypeOf(backing_array.value), alignment); LLVMValueRef local_copy = llvm_alloca(p, LLVMTypeOf(backing_array.value), alignment);
LLVMBuildStore(p->builder, backing_array.value, local_copy); LLVMBuildStore(p->builder, backing_array.value, local_copy);
array_data = llvm_alloca(p, llvm_type, alignment);
LLVMBuildMemCpy(p->builder, LLVMBuildMemCpy(p->builder,
array_data, alignment, array_data, alignment,
local_copy, alignment, local_copy, alignment,
LLVMConstInt(lb_type(m, t_int), type_size_of(t), false) LLVMConstInt(lb_type(m, t_int), type_size_of(t), false)
); );
} else {
array_data = llvm_alloca(p, LLVMTypeOf(backing_array.value), alignment);
LLVMBuildStore(p->builder, backing_array.value, array_data);
array_data = LLVMBuildPointerCast(p->builder, array_data, LLVMPointerType(llvm_type, 0), "");
}
{ {