https://llvm.org/bugs/show_bug.cgi?id=28983
Bug ID: 28983
Summary: Regression(278661:278653): casting assertion in
InstCombine on SSE2 QCMS code
Product: libraries
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: Scalar Optimizations
Assignee: unassignedb...@nondot.org
Reporter: r...@google.com
CC: llvm-bugs@lists.llvm.org
Classification: Unclassified
Appears here in Chromium:
https://build.chromium.org/p/chromium.fyi/builders/ClangToTLinux/builds/6037/steps/compile/logs/stdio
LLVM changes inside the blamelist:
$ git log --format=oneline
24088baa9daf1df2482084741d28729d2278c385..47a3de7f4db76bd34b6a9b1202841d4b85294ca5
47a3de7f4db76bd34b6a9b1202841d4b85294ca5 MachineLoop: add methods
findLoopControlBlock and findLoopPreheader
7bc6001b578c682790e28bd8031d9f3641f10603 [SimplifyCFG] Rewrite
SinkThenElseCodeToEnd
91c19fbe6c94facc80531437d32f8015c16c3752 [Thumb] Validate branch target for
CBZ/CBNZ instructions.
bd7c3fb3bf8a73e669d80ab5c30d53e7de573a2e [LSR] Don't try and create post-inc
expressions on non-rotated loops
I suspect the SimplifyCFG and LSR changes, since the other changes are in
CodeGen, not IR.
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