[llvm] [AMDGPU] Support true16 spill restore with sram-ecc (PR #165320)

[Stanislav Mekhanoshin via llvm-commits]

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@@ -1863,6 +1873,15 @@ void SIRegisterInfo::buildSpillLoadStore(
       MIB.addImm(0); // swz
     MIB.addMemOperand(NewMMO);
 
+    if (FinalValueReg != ValueReg) {
+      // Extract 16-bit from the loaded 32-bit value.
+      ValueReg = getSubReg(ValueReg, AMDGPU::lo16);
+      MIB = BuildMI(MBB, MI, DL, TII->get(AMDGPU::V_MOV_B16_t16_e32))
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rampitec wrote:

Done, thanks!

https://github.com/llvm/llvm-project/pull/165320