Hal Finkel 8846129f6e Update PEI's virtual-register-based scavenging to support multiple simultaneous mappings ... The previous algorithm could not deal properly with scavenging multiple virtual registers because it kept only one live virtual -> physical mapping (and iterated through operands in order). Now we don't maintain a current mapping, but rather use replaceRegWith to completely remove the virtual register as soon as the mapping is established. In order to allow the register scavenger to return a physical register killed by an instruction for definition by that same instruction, we now call RS->forward(I) prior to eliminating virtual registers defined in I. This requires a minor update to forward to ignore virtual registers. These new features will be tested in forthcoming commits. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178058 91177308-0d34-0410-b5e6-96231b3b80d8		2013-03-26 18:56:54 +00:00
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llvm	Update PEI's virtual-register-based scavenging to support multiple simultaneous mappings	2013-03-26 18:56:54 +00:00
llvm-c	Use LLVMBool instead of 'bool' in the C API. Based on a patch by Peter Zotov!	2013-03-10 21:58:22 +00:00