skip 16bit register for wmm reg sorting

broxigarchen · broxigarchen · commit 3aeb9e4819fa · 2025-04-23T13:42:45.000-04:00
diff --git a/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp b/llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
@@ -1650,7 +1650,7 @@ void SIFrameLowering::determineCalleeSaves(MachineFunction &MF,
     // are of 32-bit size. SIPreAllocateWWMRegs pass can add tuples into WWM
     // reserved registers.
     const TargetRegisterClass *RC = TRI->getPhysRegBaseClass(Reg);
-    if (TRI->getRegSizeInBits(*RC) > 32)
+    if (TRI->getRegSizeInBits(*RC) != 32)
       continue;
     SortedWWMVGPRs.push_back(Reg);
   }

Original file line number	Diff line number	Diff line change
`@@ -1650,7 +1650,7 @@ void SIFrameLowering::determineCalleeSaves(MachineFunction &MF,`
`1650`	`1650`	`// are of 32-bit size. SIPreAllocateWWMRegs pass can add tuples into WWM`
`1651`	`1651`	`// reserved registers.`
`1652`	`1652`	`const TargetRegisterClass *RC = TRI->getPhysRegBaseClass(Reg);`
`1653`		`- if (TRI->getRegSizeInBits(*RC) > 32)`
	`1653`	`+ if (TRI->getRegSizeInBits(*RC) != 32)`
`1654`	`1654`	`continue;`
`1655`	`1655`	`SortedWWMVGPRs.push_back(Reg);`
`1656`	`1656`	`}`