tree 5f0da14a93817c94f6dcef9d2c2c2cbc9af41986
parent e4b27869c60cb1311c4396e057c21573e19e62cd
author Matt Arsenault <Matthew.Arsenault@amd.com> 1558640294 +0000
committer Matt Arsenault <Matthew.Arsenault@amd.com> 1558640294 +0000

AMDGPU: Correct maximum possible private allocation size

We were assuming a much larger possible per-wave visible stack
allocation than is possible:

https://github.com/RadeonOpenCompute/ROCR-Runtime/blob/faa3ae51388517353afcdaf9c16621f879ef0a59/src/core/runtime/amd_gpu_agent.cpp#L70

Based on this, we can assume the high 15 bits of a frame index or sret
are 0. The frame index value is the per-lane offset, so the maximum
frame index value is MAX_WAVE_SCRATCH / wavesize.

Remove the corresponding subtarget feature and option that made
this configurable.

llvm-svn: 361541