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from 297d728cd59 [NewGVN] Fix verification of MemoryPhis in verifyMemoryCong [...] new 8b48b0420b9 The patch adds CTLZ idiom recognition. new f0a3e25eca9 [InstSimplify] restrict icmp fold with 2 sdiv exact operand [...]
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Summary of changes: lib/Analysis/InstructionSimplify.cpp | 13 +- lib/Transforms/Scalar/LoopIdiomRecognize.cpp | 295 ++++++++++++++++++++++++++- test/Transforms/InstSimplify/compare.ll | 7 +- test/Transforms/LoopIdiom/ARM/ctlz.ll | 185 +++++++++++++++++ test/Transforms/LoopIdiom/X86/ctlz.ll | 185 +++++++++++++++++ 5 files changed, 680 insertions(+), 5 deletions(-) create mode 100644 test/Transforms/LoopIdiom/ARM/ctlz.ll create mode 100644 test/Transforms/LoopIdiom/X86/ctlz.ll