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[NFC][InstCombine] R38708 - inefficient pattern for high-bits checking.
99359f391e98
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Authored by lebedev.ri on Sep 12 2018, 7:11 AM.

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[NFC][InstCombine] R38708 - inefficient pattern for high-bits checking.

The simplest pattern for now:
https://rise4fun.com/Alive/LYjY
https://godbolt.org/z/o4RB8D

https://bugs.llvm.org/show_bug.cgi?id=38708

llvm-svn: 342054

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Sep 12 2018, 7:11 AM

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rGbe0c5b6d3c41: [CodeGen] Align rtti and vtable data

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lebedev.ri committed rG99359f391e98: [NFC][InstCombine] R38708 - inefficient pattern for high-bits checking. (authored by lebedev.ri).Sep 12 2018, 7:11 AM

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llvm/

test/

Transforms/

InstCombine/

icmp-ugt-of-shl-1-by-bits-and-val-to-icmp-eq-of-lshr-val-by-bits-and-0.ll

icmp-ule-of-shl-1-by-bits-and-val-to-icmp-ne-of-lshr-val-by-bits-and-0.ll

rG99359f391e98

llvm/test/Transforms/InstCombine/icmp-ugt-of-shl-1-by-bits-and-val-to-icmp-eq-of-lshr-val-by-bits-and-0.ll

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llvm/test/Transforms/InstCombine/icmp-ule-of-shl-1-by-bits-and-val-to-icmp-ne-of-lshr-val-by-bits-and-0.ll

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