Fix vector packing regression.

When SSE4.1 isn't available, we were infinitely calling PackUnsigned() recursively. Bug b/37496082 Change-Id: Ie1fa8150d64740776c5b80baf07d997dde9d51be Reviewed-on: https://swiftshader-review.googlesource.com/12929Tested-by: Nicolas Capens <nicolascapens@google.com> Reviewed-by: Casey Dahlin <sadmac@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com>

Fix vector packing regression.
75b9c1c8 · Nicolas Capens · Nicolas Capens · 1165812d · 75b9c1c8
Commit 75b9c1c8 authored Oct 02, 2017 by Nicolas Capens Committed by Nicolas Capens Oct 02, 2017
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SubzeroReactor.cpp src/Reactor/SubzeroReactor.cpp +1 -1

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--- a/src/Reactor/SubzeroReactor.cpp
+++ b/src/Reactor/SubzeroReactor.cpp
@@ -5983,7 +5983,7 @@ namespace sw
 			RValue<Int4> sy = As<Int4>(y);
 			RValue<Int4> by = (sy & ~(sy >> 31)) - Int4(0x8000);
-			return PackUnsigned(bx, by) + UShort8(0x8000u);
+			return As<UShort8>(PackSigned(bx, by) + Short8(0x8000u));
 		}
 	}