[AMDGPU] gfx1250 has fixed GETPC bug and also extended VA to 57 bits (#152373)

Author: rampitec

llvm/lib/Target/AMDGPU/GCNSubtarget.h

@@ -1566,8 +1566,9 @@ class GCNSubtarget final : public AMDGPUGenSubtargetInfo,
   bool hasSetPrioIncWgInst() const { return HasSetPrioIncWgInst; }
 
   // \returns true if S_GETPC_B64 zero-extends the result from 48 bits instead
-  // of sign-extending.
-  bool hasGetPCZeroExtension() const { return GFX12Insts; }
+  // of sign-extending. Note that GFX1250 has not only fixed the bug but also
+  // extended VA to 57 bits.
+  bool hasGetPCZeroExtension() const { return GFX12Insts && !GFX1250Insts; }
 
   /// \returns SGPR allocation granularity supported by the subtarget.
   unsigned getSGPRAllocGranule() const {