From: Craig Topper <craig.topper@sifive.com>
Date: Sat, 1 Apr 2023 06:35:43 +0000 (-0700)
Subject: [TableGen] Simplify some code. NFC
X-Git-Tag: upstream/17.0.6~12987
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e971ca8765741b1d5c4d2d3b79c0be49a55a1b28;p=platform%2Fupstream%2Fllvm.git

[TableGen] Simplify some code. NFC

This code was creating 1 entry or 0 entry std::array to pass to
to ArrayRef arguments. ArrayRef has a constructor from a single
object and we can use std::nullopt for an empty ArrayRef.
---

diff --git a/llvm/utils/TableGen/DAGISelMatcherGen.cpp b/llvm/utils/TableGen/DAGISelMatcherGen.cpp
index ab75181d..9992535 100644
--- a/llvm/utils/TableGen/DAGISelMatcherGen.cpp
+++ b/llvm/utils/TableGen/DAGISelMatcherGen.cpp
@@ -695,12 +695,11 @@ void MatcherGen::EmitResultLeafAsOperand(const TreePatternNode *N,
     }
 
     if (Def->getName() == "undef_tied_input") {
-      std::array<MVT::SimpleValueType, 1> ResultVTs = {{ N->getSimpleType(0) }};
-      std::array<unsigned, 0> InstOps;
+      MVT::SimpleValueType ResultVT = N->getSimpleType(0);
       auto IDOperandNo = NextRecordedOperandNo++;
       AddMatcher(new EmitNodeMatcher("TargetOpcode::IMPLICIT_DEF",
-                                     ResultVTs, InstOps, false, false, false,
-                                     false, -1, IDOperandNo));
+                                     ResultVT, std::nullopt, false, false,
+                                     false, false, -1, IDOperandNo));
       ResultOps.push_back(IDOperandNo);
       return;
     }