OpenE2K/rust
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Fix another endian-ness issue in i128 trans

Browse Source 
Apparently LLVMArbitraryPrecisionInteger demands integers to be in low-endian 64-bytes, rather than
host-endian 64-bytes. This is weird, and obviously, not documented. Also, fixed now. And rustc now
works a teeny bit more on big endians.
This commit is contained in:
Simonas Kazlauskas 2017-01-27 04:36:12 +02:00
parent 07fe04c1e2
commit b8036b6908
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/librustc_trans/common.rs
View File

@ -234,7 +234,8 @@ pub fn C_integral(t: Type, u: u64, sign_extend: bool) -> ValueRef {
pub fn C_big_integral(t: Type, u: u128, sign_extend: bool) -> ValueRef {
if ::std::mem::size_of::<u128>() == 16 {
unsafe {
llvm::LLVMConstIntOfArbitraryPrecision(t.to_ref(), 2, &u as *const u128 as *const u64)
let words = [u as u64, u.wrapping_shr(64) as u64];
llvm::LLVMConstIntOfArbitraryPrecision(t.to_ref(), 2, words.as_ptr())
}
} else {
// SNAP: remove after snapshot