Files
llvm/test/CodeGen/SystemZ
Ulrich Weigand 909ca0c8af [SystemZ] Improve codegen for certain SADDO-immediate cases
When performing an add-with-overflow with an immediate in the
range -2G ... -4G, code currently loads the immediate into a
register, which generally takes two instructions.

In this particular case, it is preferable to load the negated
immediate into a register instead, which always only requires
one instruction, and then perform a subtract.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@357597 91177308-0d34-0410-b5e6-96231b3b80d8
2019-04-03 15:09:19 +00:00
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