[llvm] [NVPTX] Enhance `mul.wide` and `mad.wide` peepholes (PR #150477)

[Alex MacLean via llvm-commits]

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@@ -859,7 +859,7 @@ def MULWIDEU32Imm :
 def MULWIDEU32Imm32 :
   BasicNVPTXInst<(outs B32:$dst), (ins B16:$a, i32imm:$b), "mul.wide.u16">;
 
-def SDTMulWide : SDTypeProfile<1, 2, [SDTCisSameAs<1, 2>]>;
+def SDTMulWide : SDTypeProfile<1, 2, [SDTCisInt<0>, SDTCisInt<1>, SDTCisSameAs<1, 2>]>;
 def mul_wide_signed : SDNode<"NVPTXISD::MUL_WIDE_SIGNED", SDTMulWide>;
 def mul_wide_unsigned : SDNode<"NVPTXISD::MUL_WIDE_UNSIGNED", SDTMulWide>;
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AlexMaclean wrote:

While your here you may as well mark these nodes as commutative. 

https://github.com/llvm/llvm-project/pull/150477