Craig Topper 0b4b4e388d [IR] Implement Constant::isNegativeZeroValue/isZeroValue/isAllOnesValue/isOneValue/isMinSignedValue for ConstantDataVector without going through getElementAsConstant ...

Summary:
Currently these methods call ConstantDataVector::getSplatValue which uses getElementsAsConstant to create a Constant object representing the element value. This method incurs a map lookup to see if we already have created such a Constant before and if not allocates a new Constant object.

This patch changes these methods to use getElementAsAPFloat and getElementAsInteger so we can just examine the data values directly.

Reviewers: spatel, pcc, dexonsmith, bogner, craig.topper

Reviewed By: craig.topper

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D35040

llvm-svn: 308112

2017-07-15 22:06:19 +00:00

105 KiB

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