[llvm-bugs] [Bug 37952] New: Miscompile with -basicaa-recphi=1 -gvn
llvm-bugs at lists.llvm.org
Wed Jun 27 04:44:36 PDT 2018
Bug ID: 37952
Summary: Miscompile with -basicaa-recphi=1 -gvn
Component: new bugs
Assignee: unassignedbugs at nondot.org
Reporter: bjorn.a.pettersson at ericsson.com
CC: llvm-bugs at lists.llvm.org
Created attachment 20473
The attached llvm-lit adapted test case fails for the RUN line using
"-basicaa-recphi=1 -gvn". Afaict it is a miscompile.
Note that -basicaa-recphi seems to have been defaulted to 0 since it was
introduced in 2015 (r242320). If it turns out that the fault is related to that
option, maybe the easy solution is to remove it?
The problem was detected when doing fuzzy testing using randomized options
(normally we don't use -basicaa-recphi=1).
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