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| author | Diego Novillo <dnovillo@google.com> | 2013-05-24 12:26:52 +0000 |
|---|---|---|
| committer | Diego Novillo <dnovillo@google.com> | 2013-05-24 12:26:52 +0000 |
| commit | 77226a03dca98e6237c1068f2652fe41bea7b687 (patch) | |
| tree | 3a8cb78a478d9e82735484091ae29647e3ec9002 /lib/AsmParser | |
| parent | 49a6a8d8f2994249c81b7914b07015714748a55c (diff) | |
| download | external_llvm-77226a03dca98e6237c1068f2652fe41bea7b687.zip external_llvm-77226a03dca98e6237c1068f2652fe41bea7b687.tar.gz external_llvm-77226a03dca98e6237c1068f2652fe41bea7b687.tar.bz2 | |
Add a new function attribute 'cold' to functions.
Other than recognizing the attribute, the patch does little else.
It changes the branch probability analyzer so that edges into
blocks postdominated by a cold function are given low weight.
Added analysis and code generation tests. Added documentation for the
new attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182638 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/AsmParser')
| -rw-r--r-- | lib/AsmParser/LLLexer.cpp | 1 | ||||
| -rw-r--r-- | lib/AsmParser/LLParser.cpp | 2 | ||||
| -rw-r--r-- | lib/AsmParser/LLToken.h | 1 |
3 files changed, 4 insertions, 0 deletions
diff --git a/lib/AsmParser/LLLexer.cpp b/lib/AsmParser/LLLexer.cpp index e7a9f2a..82d9975 100644 --- a/lib/AsmParser/LLLexer.cpp +++ b/lib/AsmParser/LLLexer.cpp @@ -564,6 +564,7 @@ lltok::Kind LLLexer::LexIdentifier() { KEYWORD(alwaysinline); KEYWORD(byval); + KEYWORD(cold); KEYWORD(inlinehint); KEYWORD(inreg); KEYWORD(minsize); diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp index 62d8070..b22d251f 100644 --- a/lib/AsmParser/LLParser.cpp +++ b/lib/AsmParser/LLParser.cpp @@ -909,6 +909,7 @@ bool LLParser::ParseFnAttributeValuePairs(AttrBuilder &B, continue; } case lltok::kw_alwaysinline: B.addAttribute(Attribute::AlwaysInline); break; + case lltok::kw_cold: B.addAttribute(Attribute::Cold); break; case lltok::kw_inlinehint: B.addAttribute(Attribute::InlineHint); break; case lltok::kw_minsize: B.addAttribute(Attribute::MinSize); break; case lltok::kw_naked: B.addAttribute(Attribute::Naked); break; @@ -1222,6 +1223,7 @@ bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) { case lltok::kw_alignstack: case lltok::kw_alwaysinline: + case lltok::kw_cold: case lltok::kw_inlinehint: case lltok::kw_minsize: case lltok::kw_naked: diff --git a/lib/AsmParser/LLToken.h b/lib/AsmParser/LLToken.h index 3bf54fa..e889a2b 100644 --- a/lib/AsmParser/LLToken.h +++ b/lib/AsmParser/LLToken.h @@ -96,6 +96,7 @@ namespace lltok { kw_alwaysinline, kw_sanitize_address, kw_byval, + kw_cold, kw_inlinehint, kw_inreg, kw_minsize, |