[PATCH] D60061: [InstCombine] ssubo X, C -> saddo X, -C

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added a reviewer: RKSimon.
RKSimon added inline comments.


================
Comment at: llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp:2161
+    if (match(Arg1, m_APInt(C)) &&
+        !(C->isMinSignedValue() || C->isMaxSignedValue())) {
+      // Create a copy of the original constant and negate it.
----------------
Is C->isMaxSignedValue() necessary?


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  https://reviews.llvm.org/D60061/new/

https://reviews.llvm.org/D60061