[llvm-branch-commits] [llvm] AMDGPU/GlobalISel: RegBankLegalize rules for load (PR #112882)

[Nicolai Hähnle via llvm-branch-commits]

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@@ -233,6 +327,126 @@ RegBankLegalizeRules::getRulesForOpc(MachineInstr &MI) const {
   return GRules.at(GRulesAlias.at(Opc));
 }
 
+// Syntactic sugar wrapper for predicate lambda that enables '&&', '||' and '!'.
+class Predicate {
+public:
+  struct Elt {
+    // Save formula composed of Pred, '&&', '||' and '!' as a jump table.
+    // Sink ! to Pred. For example !((A && !B) || C) -> (!A || B) && !C
+    // Sequences of && and || will be represented by jumps, for example:
+    // (A && B && ... X) or (A && B && ... X) || Y
+    //   A == true jump to B
+    //   A == false jump to end or Y, result is A(false) or Y
+    // (A || B || ... X) or (A || B || ... X) && Y
+    //   A == true jump to end or Y, result is B(true) or Y
----------------
nhaehnle wrote:

```suggestion
    //   A == true jump to end or Y, result is A(true) or Y
```

https://github.com/llvm/llvm-project/pull/112882