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Use memcpy for local constant slice arrays from a global constant

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gingerBill
2025-09-28 22:50:36 +01:00
parent 17c9e1d76b
commit cbab97fbd7
3 changed files with 30 additions and 195 deletions
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5
src/llvm_backend_general.cpp
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@@ -1493,8 +1493,11 @@ gb_internal lbValue lb_emit_union_tag_ptr(lbProcedure *p, lbValue u) {
unsigned element_count = LLVMCountStructElementTypes(uvt);
GB_ASSERT_MSG(element_count >= 2, "element_count=%u (%s) != (%s)", element_count, type_to_string(ut), LLVMPrintTypeToString(uvt));
LLVMValueRef ptr = u.value;
ptr = LLVMBuildPointerCast(p->builder, ptr, LLVMPointerType(uvt, 0), "");
lbValue tag_ptr = {};
tag_ptr.value = LLVMBuildStructGEP2(p->builder, uvt, u.value, 1, "");
tag_ptr.value = LLVMBuildStructGEP2(p->builder, uvt, ptr, 1, "");
tag_ptr.type = alloc_type_pointer(tag_type);
return tag_ptr;
}