[PATCH] D54411: [Codegen] Merge tail blocks with no successors after block placement
Simon Pilgrim via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 3 02:19:16 PDT 2019
RKSimon added inline comments.
================
Comment at: test/CodeGen/X86/tail-opts.ll:439
+ %1 = icmp eq i32 undef, 0
+ br i1 %1, label %return, label %bb12
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dmgreen wrote:
> Can you explain this change? The comment makes it look like it should be the same test as above.
>
> But it somehow has different fall-through branches with the switches?
icmp with undef will now constant fold in SelectionDAG - you're probably being affected by that
Repository:
rL LLVM
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D54411/new/
https://reviews.llvm.org/D54411
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