Removal of redundant mod operation in _mm256_alignr_epi8

satiscugcat · Amanieu · commit e122c8d650c1 · 2025-06-17T19:28:07.000Z
diff --git a/crates/core_arch/src/x86/avx2.rs b/crates/core_arch/src/x86/avx2.rs
@@ -191,7 +191,7 @@ pub fn _mm256_alignr_epi8<const IMM8: i32>(a: __m256i, b: __m256i) -> __m256i {
             return transmute(a);
         }
 
-        let r: i8x32 = match IMM8 % 16 {
+        let r: i8x32 = match IMM8 {
             0 => simd_shuffle!(
                 b,
                 a,

Original file line number	Diff line number	Diff line change
`@@ -191,7 +191,7 @@ pub fn _mm256_alignr_epi8<const IMM8: i32>(a: __m256i, b: __m256i) -> __m256i {`
`191`	`191`	`return transmute(a);`
`192`	`192`	`}`
`193`	`193`
`194`		`- let r: i8x32 = match IMM8 % 16 {`
	`194`	`+ let r: i8x32 = match IMM8 {`
`195`	`195`	`0 => simd_shuffle!(`
`196`	`196`	`b,`
`197`	`197`	`a,`