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| author | iximeow <me@iximeow.net> | 2026-06-10 05:09:47 +0000 |
|---|---|---|
| committer | iximeow <me@iximeow.net> | 2026-07-05 00:09:22 +0000 |
| commit | 1862b315950a477390435a52b6061bf5948977c4 (patch) | |
| tree | 622330334c0cbb9c82ab687db8c294b6c8534eb8 /CHANGELOG | |
| parent | 9b98d9052a18b69bc080d106539d886ee28ab57c (diff) | |
pextr*/pinsr*/insertps/extrps immediate is now u8 instead of i8
Diffstat (limited to 'CHANGELOG')
| -rw-r--r-- | CHANGELOG | 4 |
1 files changed, 4 insertions, 0 deletions
@@ -20,6 +20,10 @@ * fix incorrect index-vector-register size choice for vgatherdpd. the index register is xmm, not depends-on-L xmm/ymm. * fix SEAM and {rd,wr}{fs,gs}base instructions being decoded in 32-bit and 16-bit modes. +* the pextr*/pinsr*/insertps/extrps immediate is now an unsigned 8-bit immediate, rather than signed. + these instructions consume 8 bit of immediate as several fields compressed into 8 bits, rather + than as a numeric value, so sign extension is not useful. further, extending the immediate makes + it more difficult to round-trip disassembly through other assemblers. testing instruction round-tripping through `masm` found a few bugs, which are also fixed in this release: |