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Edwin was asking about how we should handle PR3328, how we should make GEP respect -fwrapv etc. I wrote up some thoughts here if anyone is interested: http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt -Chris

On 07 Feb 2009, at 23:17, Chris Lattner wrote: > Edwin was asking about how we should handle PR3328, how we should make > GEP respect -fwrapv etc. I wrote up some thoughts here if anyone is > interested: > http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt The proposal suggests to change/split the existing sub/add/mul opcodes. This makes me wonder to what extent it is (currently,...

...be a concern, as Sub, Mul, Div, and Rem would all have variants, but there are plenty of bits in SubclassID, and it doesn't look like the bitcode representation uses packed opcode fields. Dan On Feb 7, 2009, at 2:17 PM, Chris Lattner wrote: > Edwin was asking about how we should handle PR3328, how we should make > GEP respect -fwrapv etc. I wrote up some thoughts here if anyone is > interested: > http://nondot.org/sabre/LLVMNotes/IntegerOverflow.txt > > -Chris > _______________________________________________ > LLVM Developers mailing list > LLVMdev at cs.uiuc.e...