tree dcae723c0bd9b46907e8ce74337e09cf58af043a
parent 3533ad6801e5f52b0ec6d554529a7caca8df2ba5
author Diana Picus <diana.picus@linaro.org> 1554887672 +0000
committer Diana Picus <diana.picus@linaro.org> 1554887672 +0000

[ARM GlobalISel] Select G_FCONSTANT for VFP3

Make it possible to TableGen code for FCONSTS and FCONSTD.

We need to make two changes to the TableGen descriptions of vfp_f32imm
and vfp_f64imm respectively:
* add GISelPredicateCode to check that the immediate fits in 8 bits;
* extract the SDNodeXForms into separate definitions and create a
GISDNodeXFormEquiv and a custom renderer function for each of them.

There's a lot of boilerplate to get the actual value of the immediate,
but it basically just boils down to calling ARM_AM::getFP32Imm or
ARM_AM::getFP64Imm.

llvm-svn: 358063