Petar Avramovic ded69779be Fix SGPR + VGPR + offset Scratch offset folding ...

Values in SGPR and VGPR register are treated as unsigned by hardware.

When value in 32-bit SGPR or VGPR base can be negative calculate offset
using 32-bit add instructions, otherwise use
sgpr(unsigned) + vgpr(unsigned) + offset.

LoopStrengthReduce.cpp changes offsets to negative and in some
iterations value in SGPR or VGPR register could be negative.

Differential Revision: https://reviews.llvm.org/D144957

2023-03-09 10:53:41 +01:00

172 KiB

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