From fdf510b7b35119739d6e41170abd46204356d58b Mon Sep 17 00:00:00 2001 From: misomosi Date: Sat, 21 Dec 2024 19:59:31 -0500 Subject: Pack struct when needed, use field_align metadata --- src/llvm_backend_utility.cpp | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) (limited to 'src/llvm_backend_utility.cpp') diff --git a/src/llvm_backend_utility.cpp b/src/llvm_backend_utility.cpp index a2a0ba4cc..b86d0773b 100644 --- a/src/llvm_backend_utility.cpp +++ b/src/llvm_backend_utility.cpp @@ -1200,9 +1200,22 @@ gb_internal lbValue lb_emit_struct_ep(lbProcedure *p, lbValue s, i32 index) { lbValue gep = lb_emit_struct_ep_internal(p, s, index, result_type); Type *bt = base_type(t); - if (bt->kind == Type_Struct && bt->Struct.is_packed) { - lb_set_metadata_custom_u64(p->module, gep.value, ODIN_METADATA_IS_PACKED, 1); - GB_ASSERT(lb_get_metadata_custom_u64(p->module, gep.value, ODIN_METADATA_IS_PACKED) == 1); + if (bt->kind == Type_Struct) { + if (bt->Struct.is_packed) { + lb_set_metadata_custom_u64(p->module, gep.value, ODIN_METADATA_IS_PACKED, 1); + GB_ASSERT(lb_get_metadata_custom_u64(p->module, gep.value, ODIN_METADATA_IS_PACKED) == 1); + } + u64 align_max = bt->Struct.custom_max_field_align; + u64 align_min = bt->Struct.custom_min_field_align; + GB_ASSERT(align_min == 0 || align_max == 0 || align_min <= align_max); + if (align_max) { + lb_set_metadata_custom_u64(p->module, gep.value, ODIN_METADATA_MAX_ALIGN, align_max); + GB_ASSERT(lb_get_metadata_custom_u64(p->module, gep.value, ODIN_METADATA_MAX_ALIGN) == align_max); + } + if (align_min) { + lb_set_metadata_custom_u64(p->module, gep.value, ODIN_METADATA_MIN_ALIGN, align_min); + GB_ASSERT(lb_get_metadata_custom_u64(p->module, gep.value, ODIN_METADATA_MIN_ALIGN) == align_min); + } } return gep; -- cgit v1.2.3