From ceaf829339bcd0719a43b3e8c22eaab7a973d37d Mon Sep 17 00:00:00 2001
From: Juergen Ributzka <juergen@apple.com>
Date: Fri, 17 Jan 2014 19:47:03 +0000
Subject: Add two new calling conventions for runtime calls

This patch adds two new target-independent calling conventions for runtime
calls - PreserveMost and PreserveAll.
The target-specific implementation for X86-64 is defined as following:
  - Arguments are passed as for the default C calling convention
  - The same applies for the return value(s)
  - PreserveMost preserves all GPRs - except R11
  - PreserveAll preserves all GPRs and all XMMs/YMMs - except R11

Reviewed by Lang and Philip

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199508 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/AsmParser/LLLexer.cpp  | 2 ++
 lib/AsmParser/LLParser.cpp | 4 ++++
 lib/AsmParser/LLToken.h    | 1 +
 3 files changed, 7 insertions(+)

(limited to 'lib/AsmParser')

diff --git a/lib/AsmParser/LLLexer.cpp b/lib/AsmParser/LLLexer.cpp
index ca3b7902b0..7fb8032ca9 100644
--- a/lib/AsmParser/LLLexer.cpp
+++ b/lib/AsmParser/LLLexer.cpp
@@ -563,6 +563,8 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(x86_64_win64cc);
   KEYWORD(webkit_jscc);
   KEYWORD(anyregcc);
+  KEYWORD(preserve_mostcc);
+  KEYWORD(preserve_allcc);
 
   KEYWORD(cc);
   KEYWORD(c);
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index d4d6f7cee1..a1b5f9946c 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -1369,6 +1369,8 @@ bool LLParser::ParseOptionalDLLStorageClass(unsigned &Res) {
 ///   ::= 'x86_64_win64cc'
 ///   ::= 'webkit_jscc'
 ///   ::= 'anyregcc'
+///   ::= 'preserve_mostcc'
+///   ::= 'preserve_allcc'
 ///   ::= 'cc' UINT
 ///
 bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
@@ -1393,6 +1395,8 @@ bool LLParser::ParseOptionalCallingConv(CallingConv::ID &CC) {
   case lltok::kw_x86_64_win64cc: CC = CallingConv::X86_64_Win64; break;
   case lltok::kw_webkit_jscc:    CC = CallingConv::WebKit_JS; break;
   case lltok::kw_anyregcc:       CC = CallingConv::AnyReg; break;
+  case lltok::kw_preserve_mostcc:CC = CallingConv::PreserveMost; break;
+  case lltok::kw_preserve_allcc: CC = CallingConv::PreserveAll; break;
   case lltok::kw_cc: {
       unsigned ArbitraryCC;
       Lex.Lex();
diff --git a/lib/AsmParser/LLToken.h b/lib/AsmParser/LLToken.h
index 5a6866dd14..50318500bf 100644
--- a/lib/AsmParser/LLToken.h
+++ b/lib/AsmParser/LLToken.h
@@ -92,6 +92,7 @@ namespace lltok {
     kw_spir_kernel, kw_spir_func,
     kw_x86_64_sysvcc, kw_x86_64_win64cc,
     kw_webkit_jscc, kw_anyregcc,
+    kw_preserve_mostcc, kw_preserve_allcc,
 
     // Attributes:
     kw_attributes,
-- 
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