shader: Add TryInstRecursive utility to values
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@ -57,6 +57,7 @@ public:
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[[nodiscard]] IR::Inst* Inst() const;
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[[nodiscard]] IR::Inst* InstRecursive() const;
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[[nodiscard]] IR::Inst* TryInstRecursive() const;
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[[nodiscard]] IR::Value Resolve() const;
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[[nodiscard]] IR::Reg Reg() const;
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[[nodiscard]] IR::Pred Pred() const;
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@ -308,6 +309,13 @@ inline IR::Inst* Value::InstRecursive() const {
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return inst;
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}
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inline IR::Inst* Value::TryInstRecursive() const {
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if (IsIdentity()) {
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return inst->Arg(0).TryInstRecursive();
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}
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return type == Type::Opaque ? inst : nullptr;
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}
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inline IR::Value Value::Resolve() const {
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if (IsIdentity()) {
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return inst->Arg(0).Resolve();
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