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Fix unsafe_op_in_unsafe_fn in compiler

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This commit is contained in:
Michael Goulet 2024-07-14 14:27:57 -04:00
parent 71eb49c318
commit 28503d69ac
15 changed files with 386 additions and 311 deletions
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18
compiler/rustc_span/src/analyze_source_file.rs
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@ -89,13 +89,13 @@ cfg_match! {
let ptr = src_bytes.as_ptr() as *const __m128i;
// We don't know if the pointer is aligned to 16 bytes, so we
// use `loadu`, which supports unaligned loading.
let chunk = _mm_loadu_si128(ptr.add(chunk_index));
let chunk = unsafe { _mm_loadu_si128(ptr.add(chunk_index)) };
// For character in the chunk, see if its byte value is < 0, which
// indicates that it's part of a UTF-8 char.
let multibyte_test = _mm_cmplt_epi8(chunk, _mm_set1_epi8(0));
let multibyte_test = unsafe { _mm_cmplt_epi8(chunk, _mm_set1_epi8(0)) };
// Create a bit mask from the comparison results.
let multibyte_mask = _mm_movemask_epi8(multibyte_test);
let multibyte_mask = unsafe { _mm_movemask_epi8(multibyte_test) };
// If the bit mask is all zero, we only have ASCII chars here:
if multibyte_mask == 0 {
@ -104,19 +104,19 @@ cfg_match! {
// Check if there are any control characters in the chunk. All
// control characters that we can encounter at this point have a
// byte value less than 32 or ...
let control_char_test0 = _mm_cmplt_epi8(chunk, _mm_set1_epi8(32));
let control_char_mask0 = _mm_movemask_epi8(control_char_test0);
let control_char_test0 = unsafe { _mm_cmplt_epi8(chunk, _mm_set1_epi8(32)) };
let control_char_mask0 = unsafe { _mm_movemask_epi8(control_char_test0) };
// ... it's the ASCII 'DEL' character with a value of 127.
let control_char_test1 = _mm_cmpeq_epi8(chunk, _mm_set1_epi8(127));
let control_char_mask1 = _mm_movemask_epi8(control_char_test1);
let control_char_test1 = unsafe { _mm_cmpeq_epi8(chunk, _mm_set1_epi8(127)) };
let control_char_mask1 = unsafe { _mm_movemask_epi8(control_char_test1) };
let control_char_mask = control_char_mask0 | control_char_mask1;
if control_char_mask != 0 {
// Check for newlines in the chunk
let newlines_test = _mm_cmpeq_epi8(chunk, _mm_set1_epi8(b'\n' as i8));
let newlines_mask = _mm_movemask_epi8(newlines_test);
let newlines_test = unsafe { _mm_cmpeq_epi8(chunk, _mm_set1_epi8(b'\n' as i8)) };
let newlines_mask = unsafe { _mm_movemask_epi8(newlines_test) };
if control_char_mask == newlines_mask {
// All control characters are newlines, record them