[TableGen] Replace instructions() with getInstructionsByEnumValue(). No need to make an iterator_range when we already have a function that returns an ArrayRef. NFC

llvm-svn: 258019
diff --git a/llvm/utils/TableGen/AsmMatcherEmitter.cpp b/llvm/utils/TableGen/AsmMatcherEmitter.cpp
index 6e9a948..80da342 100644
--- a/llvm/utils/TableGen/AsmMatcherEmitter.cpp
+++ b/llvm/utils/TableGen/AsmMatcherEmitter.cpp
@@ -1400,7 +1400,7 @@
         AsmVariant->getValueAsString("BreakCharacters");
     Variant.AsmVariantNo = AsmVariant->getValueAsInt("Variant");
 
-    for (const CodeGenInstruction *CGI : Target.instructions()) {
+    for (const CodeGenInstruction *CGI : Target.getInstructionsByEnumValue()) {
 
       // If the tblgen -match-prefix option is specified (for tblgen hackers),
       // filter the set of instructions we consider.