Add the "ForceSizeOpt" attribute.

Patch by Quentin Colombet <qcolombet@apple.com>

Original description:
"""
The attached patch is the first step to have a better control on Oz related optimizations.
The Oz optimization level focuses on code size, thus I propose to add an attribute called ForceSizeOpt.
"""

llvm-svn: 166422

3 files changed, 4 insertions, 0 deletions

diff --git a/llvm/lib/AsmParser/LLLexer.cpp b/llvm/lib/AsmParser/LLLexer.cpp
index 2ad0010fd12..464dfd51d67 100644
--- a/llvm/lib/AsmParser/LLLexer.cpp
+++ b/llvm/lib/AsmParser/LLLexer.cpp
@@ -557,6 +557,7 @@ lltok::Kind LLLexer::LexIdentifier() {
   KEYWORD(naked);
   KEYWORD(nonlazybind);
   KEYWORD(address_safety);
+  KEYWORD(forcesizeopt);
 
   KEYWORD(type);
   KEYWORD(opaque);
diff --git a/llvm/lib/AsmParser/LLParser.cpp b/llvm/lib/AsmParser/LLParser.cpp
index 60e1741d694..cc7cc312460 100644
--- a/llvm/lib/AsmParser/LLParser.cpp
+++ b/llvm/lib/AsmParser/LLParser.cpp
@@ -953,6 +953,7 @@ bool LLParser::ParseOptionalAttrs(AttrBuilder &B, unsigned AttrKind) {
     case lltok::kw_naked:           B.addAttribute(Attributes::Naked); break;
     case lltok::kw_nonlazybind:     B.addAttribute(Attributes::NonLazyBind); break;
     case lltok::kw_address_safety:  B.addAttribute(Attributes::AddressSafety); break;
+    case lltok::kw_forcesizeopt:    B.addAttribute(Attributes::ForceSizeOpt); break;
 
     case lltok::kw_alignstack: {
       unsigned Alignment;
@@ -1011,6 +1012,7 @@ bool LLParser::ParseOptionalAttrs(AttrBuilder &B, unsigned AttrKind) {
     case lltok::kw_nonlazybind:
     case lltok::kw_returns_twice:
     case lltok::kw_address_safety:
+    case lltok::kw_forcesizeopt:
       if (AttrKind != 2)
         HaveError |= Error(AttrLoc, "invalid use of function-only attribute");
       break;
diff --git a/llvm/lib/AsmParser/LLToken.h b/llvm/lib/AsmParser/LLToken.h
index 0859f6a288f..ff6d68f0da4 100644
--- a/llvm/lib/AsmParser/LLToken.h
+++ b/llvm/lib/AsmParser/LLToken.h
@@ -109,6 +109,7 @@ namespace lltok {
     kw_naked,
     kw_nonlazybind,
     kw_address_safety,
+    kw_forcesizeopt,
 
     kw_type,
     kw_opaque,