Fix sign masks of narrow vectors.

The SignMask intrinsic returns the most significant bit of each byte in a 128-bit vector. For 'emulated' 8-byte vectors we expect the upper half to be ignored. Change-Id: I994e35fb9c21710c35a89add42297c3c9bad07a4 Reviewed-on: https://swiftshader-review.googlesource.com/10988Reviewed-by: Alexis Hétu <sugoi@google.com> Reviewed-by: Nicolas Capens <nicolascapens@google.com> Tested-by: Nicolas Capens <nicolascapens@google.com>

Fix sign masks of narrow vectors.
0f70a7fa · Nicolas Capens · Nicolas Capens · 9f737d37 · 0f70a7fa
Commit 0f70a7fa authored Jul 26, 2017 by Nicolas Capens Committed by Nicolas Capens Jul 26, 2017
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SubzeroReactor.cpp src/Reactor/SubzeroReactor.cpp +2 -3

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--- a/src/Reactor/SubzeroReactor.cpp
+++ b/src/Reactor/SubzeroReactor.cpp
@@ -289,7 +289,6 @@ namespace sw
 			}
 		}

-
 		return symbolValue;
 	}

@@ -2865,7 +2864,7 @@ namespace sw
 			movmsk->addArg(x.value);
 			::basicBlock->appendInst(movmsk);

-			return RValue<Int>(V(result));
+			return RValue<Int>(V(result)) & 0xFF;
 		}
 	}

@@ -3141,7 +3140,7 @@ namespace sw
 			movmsk->addArg(x.value);
 			::basicBlock->appendInst(movmsk);

-			return RValue<Int>(V(result));
+			return RValue<Int>(V(result)) & 0xFF;
 		}
 	}