Akira Hatanaka 0fb89f87e0 Reduce the size of MCRelaxableFragment. ... MCRelaxableFragment previously kept a copy of MCSubtargetInfo and MCInst to enable re-encoding the MCInst later during relaxation. A copy of MCSubtargetInfo (instead of a reference or pointer) was needed because the feature bits could be modified by the parser. This commit replaces the MCSubtargetInfo copy in MCRelaxableFragment with a constant reference to MCSubtargetInfo. The copies of MCSubtargetInfo are kept in MCContext, and the target parsers are now responsible for asking MCContext to provide a copy whenever the feature bits of MCSubtargetInfo have to be toggled. With this patch, I saw a 4% reduction in peak memory usage when I compiled verify-uselistorder.lto.bc using llc. rdar://problem/21736951 Differential Revision: http://reviews.llvm.org/D14346 llvm-svn: 253127		2015-11-14 06:35:56 +00:00
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CMakeLists.txt
LLVMBuild.txt
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SystemZAsmParser.cpp	Reduce the size of MCRelaxableFragment.	2015-11-14 06:35:56 +00:00