Sanjay Patel 368e7e3ad1 [x86] fix cost of SINT_TO_FP for i32 --> float (PR21356, PR28434) ...

This is "cvtdq2ps" which does not appear to be particularly slow on any CPU
according to Agner's tables. Choosing "5" as a cost here as suggested in:
https://llvm.org/bugs/show_bug.cgi?id=21356
...but it seems very conservative given that the instruction is fully pipelined,
and I think these costs are supposed to model throughput.

Note that related costs are also most likely too high, but this fixes PR21356
and partly fixes PR28434.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@274658 91177308-0d34-0410-b5e6-96231b3b80d8

2016-07-06 19:15:54 +00:00

..

AArch64

[AArch64] Reduce vector insert/extract cost for Kryo

2016-02-18 18:35:45 +00:00

AMDGPU

AMDGPU: Cost model for basic integer operations

2016-03-25 01:16:40 +00:00

ARM

[TTI] The cost model should not assume vector casts get completely scalarized

2016-07-06 17:30:56 +00:00

PowerPC

[TTI] The cost model should not assume vector casts get completely scalarized

2016-07-06 17:30:56 +00:00

X86

[x86] fix cost of SINT_TO_FP for i32 --> float (PR21356, PR28434)

2016-07-06 19:15:54 +00:00

no_info.ll

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