Prakhar Bahuguna <prakhar.bahug...@arm.com> writes: > On 31/05/2017 09:19:40, Richard Sandiford wrote: >> const_ints are supposed to be stored in sign-extended form, so a 32-bit >> integer with the MSB set should be 0xffffffff80000000|x instead of >> 0x80000000|x. It's a bug if you have one where that isn't true. >> >> In the patch it looks like this could come from: >> ...these two splits, where the GEN_INTs should probably be: >> >> gen_int_mode (..., SImode); >> >> instead. > > Hi Richard, thanks for the tip. Is there a test case that could produce an > incorrect result? I've attempted to create one using negative doubles and > floats but haven't succeeded.
Just to check, are you testing with --enable-checking=yes,rtl? When the values you tried were split, did you get the sign-extended form or the zero-extended form? Thanks, Richard
