[PATCH] D35635: Optimize {s,u}{add,sub}.with.overflow on ARM

[Eli Friedman via Phabricator via llvm-commits]

efriedma added inline comments.


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Comment at: test/CodeGen/ARM/su-addsub-overflow.ll:49
+; CHECK:    cmp r0, r1
+; CHECK-NEXT:    subvc r0, r0, r1
+; CHECK-NEXT:    movvc pc, lr
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This looks weird; we're generating a cmp, then a sub with exactly the same operands?


https://reviews.llvm.org/D35635