Carl Ritson 5139299618 [AMDGPU] Track physical VGPRs used for SGPR spills (#75573) ...

Physical VGPRs used for SGPR spills need to be tracked independent of
WWM reserved registers. The WWM reserved set contains extra registers
allocated during WWM pre-allocation pass.

This causes SGPR spills allocated after WWM pre-allocation to overlap
with WWM register usage, e.g. if frame pointer is spilt during
prologue/epilog insertion.

2023-12-17 16:44:16 +09:00

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