================
@@ -379,6 +513,12 @@ bool AMDGPUPromoteAllocaImpl::run(Function &F, bool
PromoteToLDS) {
MaxVGPRs = getMaxVGPRs(CurrentLocalMemUsage, TM, F);
setFunctionLimits(F);
+ // "VGPR as memory" is only enabled on the gfx940/gfx950 (CDNA3+) parts and
on
+ // GFX12 and later. On any other target the objects fall back to scratch.
+ const GCNSubtarget &ST = TM.getSubtarget<GCNSubtarget>(F);
+ const bool TargetSupportsVGPRAsMemory =
----------------
arsenm wrote:
This shouldn't depend on the subtarget
https://github.com/llvm/llvm-project/pull/205435
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