[Xtensa] Fix register asm parsing. (#95551)

Fix passing temporary string object as argument to the StringRef constructor in "parseRegister" function, because it causes errors in the test "llvm/test/MC/Xtensa/Core/processor-control.s".
llvm · Jun 17, 2024 · 52d87de · 52d87de
1 parent f06d969
commit 52d87de
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diff --git a/llvm/lib/Target/Xtensa/AsmParser/XtensaAsmParser.cpp b/llvm/lib/Target/Xtensa/AsmParser/XtensaAsmParser.cpp
@@ -572,7 +572,7 @@ ParseStatus XtensaAsmParser::parseRegister(OperandVector &Operands,
   case AsmToken::Integer:
     if (!SR)
       return ParseStatus::NoMatch;
-    RegName = StringRef(std::to_string(getLexer().getTok().getIntVal()));
+    RegName = getLexer().getTok().getString();
     RegNo = MatchRegisterName(RegName);
     if (RegNo == 0)
       RegNo = MatchRegisterAltName(RegName);

diff --git a/llvm/test/MC/Xtensa/Core/registers.s b/llvm/test/MC/Xtensa/Core/registers.s
@@ -0,0 +1,14 @@
+# RUN: llvm-mc %s -triple=xtensa -show-encoding \
+# RUN:     | FileCheck -check-prefixes=CHECK,CHECK-INST %s
+
+
+.align	4
+LBL0:
+
+#############################################################
+## Check special registers parsing
+#############################################################
+
+# CHECK-INST: xsr a8, sar
+# CHECK: encoding: [0x80,0x03,0x61]
+xsr a8, 3