[llvm] [NVPTX] support immediate values in st.param instructions (PR #91523)

[Artem Belevich via llvm-commits]

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@@ -2637,25 +2637,46 @@ class LoadParamRegInst<NVPTXRegClass regclass, string opstr> :
                 [(set regclass:$dst, (LoadParam (i32 0), (i32 imm:$b)))]>;
 
 let mayStore = true in {
-  class StoreParamInst<NVPTXRegClass regclass, string opstr> :
-        NVPTXInst<(outs), (ins regclass:$val, i32imm:$a, i32imm:$b),
-                  !strconcat("st.param", opstr, " \t[param$a+$b], $val;"),
-                  []>;
 
-  class StoreParamV2Inst<NVPTXRegClass regclass, string opstr> :
-        NVPTXInst<(outs), (ins regclass:$val, regclass:$val2,
-                               i32imm:$a, i32imm:$b),
-                  !strconcat("st.param.v2", opstr,
-                             " \t[param$a+$b], {{$val, $val2}};"),
-                  []>;
+  multiclass StoreParamInst<NVPTXRegClass regclass, Operand IMMType, string opstr, bit support_imm = true> {
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Artem-B wrote:

Nice. I like it even better.

https://github.com/llvm/llvm-project/pull/91523