[llvm] [AMDGPU][GISel] Fold 'min(min(x,y),z)' and 'max(max(x,y),z)' into min3 and max3 (PR #200410)

[Petar Avramovic via llvm-commits]

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@@ -519,10 +519,10 @@ bool AMDGPURegBankCombinerImpl::matchMinMaxToMinMax3(
     return false;
 
   Register R0, R1, R2;
-  auto P1 = m_BinOp(Opc, m_OneNonDBGUse(m_BinOp(Opc, m_Reg(R0), m_Reg(R1))),
+  auto P1 = m_CommutativeBinOp(Opc, m_OneNonDBGUse(m_CommutativeBinOp(Opc, m_Reg(R0), m_Reg(R1))),
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petar-avramovic wrote:

the point was to use one matcher, commutative one should match both a b and b a

https://github.com/llvm/llvm-project/pull/200410