[PATCH] D124951: [DAGCombiner] Fold (max/min X, X) -> X.

[Craig Topper via Phabricator via llvm-commits]

craig.topper added inline comments.


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Comment at: llvm/test/CodeGen/RISCV/min-max.ll:534
+; Tests with undef operands. These should fold to undef for RV32 or 0 for RV64.
+; FIXME: The RV64 cases are hitting pr55178.
 
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We wouldn't hit the bug if we folded sext/zext undef in DAGCombiner. Instead we type legalize and hit the sext_inreg getNode bug.


Repository:
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  https://reviews.llvm.org/D124951/new/

https://reviews.llvm.org/D124951