https://bugs.llvm.org/show_bug.cgi?id=38428
Bug ID: 38428
Summary: xor i1 (xor i1 %x, %y), true -> icmp eq i1 %x, %y
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: Scalar Optimizations
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
%t = xor i1 %x, %y
%r = xor i1 %t, true
=>
%r = icmp eq i1 %x, %y
https://godbolt.org/g/52qJrW
https://rise4fun.com/Alive/LNo
Not sure, is this for instcombine?
Stumbled into while trying to come with the sign-change test for sanitizer.
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