Commit645e9f2

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Optimize SipHash by reordering compress instructions

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Lines changed: 6 additions & 5 deletions

Original file line number	Diff line number	Diff line change
`@@ -76,18 +76,19 @@ macro_rules! compress {`
`76`	`76`	`($state:expr) =>{{ compress!($state.v0, $state.v1, $state.v2, $state.v3)}};`
`77`	`77`	`($v0:expr, $v1:expr, $v2:expr, $v3:expr) =>{{`
`78`	`78`	`$v0 = $v0.wrapping_add($v1);`
	`79`	`+ $v2 = $v2.wrapping_add($v3);`
`79`	`80`	`$v1 = $v1.rotate_left(13);`
`80`	`81`	`$v1 ^= $v0;`
`81`		`- $v0 = $v0.rotate_left(32);`
`82`		`- $v2 = $v2.wrapping_add($v3);`
`83`	`82`	`$v3 = $v3.rotate_left(16);`
`84`	`83`	`$v3 ^= $v2;`
`85`		`- $v0 = $v0.wrapping_add($v3);`
`86`		`- $v3 = $v3.rotate_left(21);`
`87`		`- $v3 ^= $v0;`
	`84`	`+ $v0 = $v0.rotate_left(32);`
	`85`	`+`
`88`	`86`	`$v2 = $v2.wrapping_add($v1);`
	`87`	`+ $v0 = $v0.wrapping_add($v3);`
`89`	`88`	`$v1 = $v1.rotate_left(17);`
`90`	`89`	`$v1 ^= $v2;`
	`90`	`+ $v3 = $v3.rotate_left(21);`
	`91`	`+ $v3 ^= $v0;`
`91`	`92`	`$v2 = $v2.rotate_left(32);`
`92`	`93`	`}};`
`93`	`94`	`}`

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