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...e and easily parallelized task. I got the A9 manual that has the cost of all instructions (including NEON and VFP), that should give us a head start. Renato, Thanks for working on this! Some of the costs for the arithmetic operations should be handled automatically by the BasicTTI (which asks TartetLowering if the type and operations are legal). We need to have cost tables for things like "trunk <4 x i64> to <4 x i8>" because even TLI does not know how custom operations gets lowered. > > I'm guessing the cost you already have for Intel and the BasicTTI is in &qu...

On 10 January 2013 23:00, Nadav Rotem <nrotem at apple.com> wrote: > Some of the costs for the arithmetic operations should be handled > automatically by the BasicTTI (which asks TartetLowering if the type and > operations are legal). We need to have cost tables for things like "trunk > <4 x i64> to <4 x i8>" because even TLI does not know how custom operations > gets lowered. > BasicTTI::getCastInstrCost() assumes that they're free, which is pr...

On 9 January 2013 17:10, Nadav Rotem <nrotem at apple.com> wrote: > For example: > "opt -cost-model -analyze dumper.ll -mtriple=thumbv7 > -mcpu=cortex-a15" > > I also run the vectorizer with -debug-only=loop-vectorize because it dumps > the costs of all of the instructions with different vectorization factors, > and it also detects the different kinds

On Jan 11, 2013, at 7:36 AM, Renato Golin Linaro <renato.golin at linaro.org> wrote: > On 10 January 2013 23:00, Nadav Rotem <nrotem at apple.com> wrote: > Some of the costs for the arithmetic operations should be handled automatically by the BasicTTI (which asks TartetLowering if the type and operations are legal). We need to have cost tables for things like "trunk <4 x i64> to <4 x i8>" because even TLI does not know how custom operations gets lowered. > > BasicTTI::getCastInstrCost() assumes that they're free, which is probably so...