language-servers/roc
1
0
Fork 0
mirror of https://github.com/roc-lang/roc.git synced 2025-09-26 21:39:07 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

align alloca

Browse source
This commit is contained in:
Folkert 2022-07-23 17:07:43 +02:00
parent 48e0938e8b
commit aa08256aef
No known key found for this signature in database
GPG key ID: 1F17F6FFD112B97C
1 changed files with 8 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

8
crates/compiler/gen_llvm/src/llvm/bitcode.rs
View file

@ -181,7 +181,15 @@ pub fn call_bitcode_fn_fixing_for_convention<'a, 'ctx, 'env>(
.try_into() .try_into()
.expect("Zig bitcode return type is not a basic type!"); .expect("Zig bitcode return type is not a basic type!");
// when we write an i128 into this (happens in NumToInt), zig expects this pointer to
// be 16-byte aligned. Not doing so is UB and will immediately fail on CI
let cc_return_value_ptr = env.builder.build_alloca(cc_return_type, "return_value"); let cc_return_value_ptr = env.builder.build_alloca(cc_return_type, "return_value");
cc_return_value_ptr
.as_instruction()
.unwrap()
.set_alignment(16)
.unwrap();
let fixed_args: Vec<BasicValueEnum<'ctx>> = [cc_return_value_ptr.into()] let fixed_args: Vec<BasicValueEnum<'ctx>> = [cc_return_value_ptr.into()]
.iter() .iter()
.chain(args) .chain(args)