Author: tnorthover
Date: Tue May 3 14:22:41 2016
New Revision: 268422
URL: http://llvm.org/viewvc/llvm-project?rev=268422&view=rev
Log:
AArch64: simplify illegal vector check. NFC.
Use a utility function to check whether the number of elements is a power of 2
and drop the redundant upper limit (a 128-bit vector with more than 16 elements
would have each element < 8 bits, not possible).
Modified:
cfe/trunk/lib/CodeGen/TargetInfo.cpp
Modified: cfe/trunk/lib/CodeGen/TargetInfo.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/TargetInfo.cpp?rev=268422&r1=268421&r2=268422&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/TargetInfo.cpp (original)
+++ cfe/trunk/lib/CodeGen/TargetInfo.cpp Tue May 3 14:22:41 2016
@@ -4614,7 +4614,7 @@ bool AArch64ABIInfo::isIllegalVectorType
unsigned NumElements = VT->getNumElements();
uint64_t Size = getContext().getTypeSize(VT);
// NumElements should be power of 2 between 1 and 16.
- if ((NumElements & (NumElements - 1)) != 0 || NumElements > 16)
+ if (!llvm::isPowerOf2_32(NumElements))
return true;
return Size != 64 && (Size != 128 || NumElements == 1);
}
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