diff options
Diffstat (limited to 'src/codegen.cpp')
| -rw-r--r-- | src/codegen.cpp | 25 |
1 files changed, 13 insertions, 12 deletions
diff --git a/src/codegen.cpp b/src/codegen.cpp index 5d98b22ab8..8fec6a4c51 100644 --- a/src/codegen.cpp +++ b/src/codegen.cpp @@ -1473,19 +1473,20 @@ static LLVMValueRef ir_render_elem_ptr(CodeGen *g, IrExecutable *executable, IrI if (canon_child_type->id == TypeTableEntryIdStruct && canon_child_type->data.structure.layout == ContainerLayoutPacked) { - LLVMTypeRef ptr_u8_type_ref = LLVMPointerType(LLVMInt8Type(), 0); - LLVMValueRef u8_array_ptr = LLVMBuildBitCast(g->builder, array_ptr, ptr_u8_type_ref, ""); size_t unaligned_bit_count = instruction->base.value.type->data.pointer.unaligned_bit_count; - assert(unaligned_bit_count != 0); - assert(unaligned_bit_count % 8 == 0); - LLVMValueRef elem_size_bytes = LLVMConstInt(g->builtin_types.entry_usize->type_ref, - unaligned_bit_count / 8, false); - LLVMValueRef byte_offset = LLVMBuildNUWMul(g->builder, subscript_value, elem_size_bytes, ""); - LLVMValueRef indices[] = { - byte_offset - }; - LLVMValueRef elem_byte_ptr = LLVMBuildInBoundsGEP(g->builder, u8_array_ptr, indices, 1, ""); - return LLVMBuildBitCast(g->builder, elem_byte_ptr, LLVMPointerType(canon_child_type->type_ref, 0), ""); + if (unaligned_bit_count != 0) { + LLVMTypeRef ptr_u8_type_ref = LLVMPointerType(LLVMInt8Type(), 0); + LLVMValueRef u8_array_ptr = LLVMBuildBitCast(g->builder, array_ptr, ptr_u8_type_ref, ""); + assert(unaligned_bit_count % 8 == 0); + LLVMValueRef elem_size_bytes = LLVMConstInt(g->builtin_types.entry_usize->type_ref, + unaligned_bit_count / 8, false); + LLVMValueRef byte_offset = LLVMBuildNUWMul(g->builder, subscript_value, elem_size_bytes, ""); + LLVMValueRef indices[] = { + byte_offset + }; + LLVMValueRef elem_byte_ptr = LLVMBuildInBoundsGEP(g->builder, u8_array_ptr, indices, 1, ""); + return LLVMBuildBitCast(g->builder, elem_byte_ptr, LLVMPointerType(canon_child_type->type_ref, 0), ""); + } } LLVMValueRef indices[] = { LLVMConstNull(g->builtin_types.entry_usize->type_ref), |