Sjoerd Meijer 05488db23f This implements a more optimal algorithm for selecting a base constant in ... constant hoisting. It not only takes into account the number of uses and the cost of expressions in which constants appear, but now also the resulting integer range of the offsets. Thus, the algorithm maximizes the number of uses within an integer range that will enable more efficient code generation. On ARM, for example, this will enable code size optimisations because less negative offsets will be created. Negative offsets/immediates are not supported by Thumb1 thus preventing more compact instruction encoding. Differential Revision: http://reviews.llvm.org/D21183 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275382 91177308-0d34-0410-b5e6-96231b3b80d8		2016-07-14 07:44:20 +00:00
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AArch64
ARM	This implements a more optimal algorithm for selecting a base constant in	2016-07-14 07:44:20 +00:00
PowerPC
X86	[PM] Port ConstantHoisting to the new Pass Manager	2016-07-02 00:16:47 +00:00