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[instcombine] Fix oss-fuzz 39934 (mul matcher can match non-instruction)
authorPhilip Reames <listmail@philipreames.com>
Sun, 24 Oct 2021 01:07:21 +0000 (18:07 -0700)
committerPhilip Reames <listmail@philipreames.com>
Sun, 24 Oct 2021 21:42:03 +0000 (14:42 -0700)
commit3c06ecaa1e8d0267fe67c1e5c8fa5f294de2aab8
tree6fd25f4ef5d880d6b5769151abc9b231a26f5e4atree | snapshot
parent850217686e211f9515d60f31e31bc4171f544239commit | diff
[instcombine] Fix oss-fuzz 39934 (mul matcher can match non-instruction)

Fixes a crash observed by oss-fuzz in 39934.  Issue at hand is that code expects a pattern match on m_Mul to imply the operand is a mul instruction, however mul constexprs are also valid here.
llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp diff | blob | history
llvm/test/Transforms/InstCombine/icmp-mul.ll diff | blob | history
Domain: System / Toolchain;