[PATCH] D131117: [X86] Teach PostprocessISelDAG to fold ANDrm+TESTrr when chain result is used.

[LuoYuanke via Phabricator via llvm-commits]

LuoYuanke added inline comments.


================
Comment at: llvm/lib/Target/X86/X86ISelDAGToDAG.cpp:1507
+           N0Opc == X86::AND32rm || N0Opc == X86::AND64rm) &&
+          !And->hasAnyUseOfValue(1)) {
         unsigned NewOpc;
----------------
Is the EFLAGS of `AND32rm` the same to the EFLAGS produced by `TEST32mr`?


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  https://reviews.llvm.org/D131117/new/

https://reviews.llvm.org/D131117