Revert "Define 'swiftcorocc' calling convention."

This reverts commit 6c453dd.

Author: ahmedbougacha

llvm/include/llvm/AsmParser/LLToken.h

@@ -161,7 +161,6 @@ enum Kind {
   kw_anyregcc,
   kw_swiftcc,
   kw_swifttailcc,
-  kw_swiftcorocc,
   kw_preserve_mostcc,
   kw_preserve_allcc,
   kw_preserve_nonecc,

llvm/include/llvm/IR/CallingConv.h

@@ -270,10 +270,6 @@ namespace CallingConv {
     /// Preserve X1-X15, X19-X29, SP, Z0-Z31, P0-P15.
     AArch64_SME_ABI_Support_Routines_PreserveMost_From_X1 = 111,
 
-    /// This follows the Swift calling convention in how arguments are passed
-    /// but doesn't clean up the stack on a return.
-    SwiftCoro = 112, // FIXME: allocate
-
     /// The highest possible ID. Must be some 2^k - 1.
     MaxID = 1023
   };

llvm/lib/AsmParser/LLLexer.cpp

@@ -619,7 +619,6 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(x86_regcallcc);
   KEYWORD(swiftcc);
   KEYWORD(swifttailcc);
-  KEYWORD(swiftcorocc);
   KEYWORD(anyregcc);
   KEYWORD(preserve_mostcc);
   KEYWORD(preserve_allcc);

llvm/lib/AsmParser/LLParser.cpp

@@ -2187,7 +2187,6 @@ void LLParser::parseOptionalDLLStorageClass(unsigned &Res) {
 ///   ::= 'ghccc'
 ///   ::= 'swiftcc'
 ///   ::= 'swifttailcc'
-///   ::= 'swiftcorocc'
 ///   ::= 'x86_intrcc'
 ///   ::= 'hhvmcc'
 ///   ::= 'hhvm_ccc'
@@ -2253,7 +2252,6 @@ bool LLParser::parseOptionalCallingConv(unsigned &CC) {
   case lltok::kw_ghccc:          CC = CallingConv::GHC; break;
   case lltok::kw_swiftcc:        CC = CallingConv::Swift; break;
   case lltok::kw_swifttailcc:    CC = CallingConv::SwiftTail; break;
-  case lltok::kw_swiftcorocc:    CC = CallingConv::SwiftCoro; break;
   case lltok::kw_x86_intrcc:     CC = CallingConv::X86_INTR; break;
   case lltok::kw_hhvmcc:
     CC = CallingConv::DUMMY_HHVM;

llvm/lib/IR/AsmWriter.cpp

@@ -343,7 +343,6 @@ static void PrintCallingConv(unsigned cc, raw_ostream &Out) {
   case CallingConv::SPIR_KERNEL:   Out << "spir_kernel"; break;
   case CallingConv::Swift:         Out << "swiftcc"; break;
   case CallingConv::SwiftTail:     Out << "swifttailcc"; break;
-  case CallingConv::SwiftCoro:     Out << "swiftcorocc"; break;
   case CallingConv::X86_INTR:      Out << "x86_intrcc"; break;
   case CallingConv::DUMMY_HHVM:
     Out << "hhvmcc";