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(parent: 78d3af4) | patch
Reimplement r114460 in target-independent DAGCombine rather than target-dependent...
authorOwen Anderson <resistor@mac.com>
Tue, 21 Sep 2010 20:42:50 +0000 (20:42 +0000)
committerOwen Anderson <resistor@mac.com>
Tue, 21 Sep 2010 20:42:50 +0000 (20:42 +0000)
commitbc146b0a4dcee601459eee943b4133d3cf63f1dd
treec57d1b25209b8be14d531b49a1fc0221eefbc2cdtree | snapshot
parent78d3af47f532d67611e7d625b505fa832d713a26commit | diff
Reimplement r114460 in target-independent DAGCombine rather than target-dependent, by using
the predicate to discover the number of sign bits.  Enhance X86's target lowering to provide
a useful response to this query.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114473 91177308-0d34-0410-b5e6-96231b3b80d8
lib/CodeGen/SelectionDAG/DAGCombiner.cpp diff | blob | history
lib/Target/X86/X86ISelLowering.cpp diff | blob | history
lib/Target/X86/X86ISelLowering.h diff | blob | history
C/C++ LLVM-based compilers that forbids OOTA behaviors