a64: Remove static from zero constant

Wunkolo · Wunkolo · commit ba3f7841c8e3 · 2025-01-08T10:43:54.000-08:00
This turns this into a memory-read rather than a `movi`.

Avoid static!
diff --git a/source/CRC/CRC32-a64.cpp b/source/CRC/CRC32-a64.cpp
@@ -269,7 +269,7 @@ std::uint32_t CRC32_PMULL(std::span<const std::byte> Data, std::uint32_t CRC)
 	}
 
 	// Reduce 128 to 64
-	static const uint64x2_t Zero = vdupq_n_u64(0);
+	const uint64x2_t Zero = vdupq_n_u64(0);
 	{
 		const poly64x2_t MulHiLo = pmull_p64<1, 0>(CRCVec.val[0], K3K4);
 

Original file line number	Diff line number	Diff line change
`@@ -269,7 +269,7 @@ std::uint32_t CRC32_PMULL(std::span<const std::byte> Data, std::uint32_t CRC)`
`269`	`269`	`}`
`270`	`270`
`271`	`271`	`// Reduce 128 to 64`
`272`		`- static const uint64x2_t Zero = vdupq_n_u64(0);`
	`272`	`+ const uint64x2_t Zero = vdupq_n_u64(0);`
`273`	`273`	`{`
`274`	`274`	`const poly64x2_t MulHiLo = pmull_p64<1, 0>(CRCVec.val[0], K3K4);`
`275`	`275`