[LLVMdev] arithmetical operands signedness (original) (raw)
Jonas Paulsson jnspaulsson at hotmail.com
Mon Sep 5 07:35:37 PDT 2011
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Hi,
my target handles operands of multiplying instructions differently based on signedness.
I wonder then how I would do instruction selection based on the operands signs?
The mul instruction sets a nsw for signed, but when i try unsigned ops, there is no wrap flag at all. I'm not sure this is enough information to work with, or?
Jonas
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