Commit 81c441f885
Changed files (1)
src
src/analyze.cpp
@@ -6051,12 +6051,12 @@ ZigType *make_int_type(CodeGen *g, bool is_signed, uint32_t size_in_bits) {
entry->abi_size = LLVMABISizeOfType(g->target_data_ref, entry->llvm_type);
entry->abi_align = LLVMABIAlignmentOfType(g->target_data_ref, entry->llvm_type);
- if (size_in_bits >= 128) {
+ if (size_in_bits >= 128 && entry->abi_align < 16) {
// Override the incorrect alignment reported by LLVM. Clang does this as well.
// On x86_64 there are some instructions like CMPXCHG16B which require this.
// On all targets, integers 128 bits and above have ABI alignment of 16.
+ // However for some targets, LLVM incorrectly reports this as 8.
// See: https://github.com/ziglang/zig/issues/2987
- assert(entry->abi_align == 8); // if this trips we can remove the workaround
entry->abi_align = 16;
}
}