tree c3f4b7cfd0378a308a1591a7ba235d27902be831
parent e86c5a7b9dbff5383cf9c81aa9eff38a92ce73aa
author Shilei Tian <i@tianshilei.me> 1741444100 -0800
committer GitHub <noreply@github.com> 1741444100 -0500
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[AMDGPU] Change SGPR layout to striped caller/callee saved (#127353)

This PR updates the SGPR layout to a striped caller/callee-saved design,
similar
to the VGPR layout.

To ensure that s30-s31 (return address), s32 (stack pointer), s33 (frame
pointer), and s34 (base pointer) remain callee-saved, the striped layout
starts
from s40, with a stripe width of 8. The last stripe is 10 wide instead
of 8 to
avoid ending with a 2-wide stripe.

Fixes #113782.