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

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri accepted this revision.
lebedev.ri added a comment.
This revision is now accepted and ready to land.

LG.
@nikic ?



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Comment at: llvm/lib/Transforms/InstCombine/InstCombineCalls.cpp:2155
+    if (match(Arg1, m_Constant(C)) && C->isNotMinSignedValue()) {
+      // Create a copy of the original constant and negate it.
+      Value *NegVal = ConstantExpr::getNeg(C);
----------------
This does not create a //copy// of the original constant though, it just negates it.


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https://reviews.llvm.org/D60061