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| author | David Majnemer <david.majnemer@gmail.com> | 2015-11-04 03:40:30 +0000 |
|---|---|---|
| committer | David Majnemer <david.majnemer@gmail.com> | 2015-11-04 03:40:30 +0000 |
| commit | d9b1a4fb710d45b2acba65d6248d91af22788c6e (patch) | |
| tree | c5343ab0425c83973e966e4fb34959b609a31263 /clang/lib/Serialization/ASTReader.cpp | |
| parent | 40d3570c4470bd7c6dde62669a7192d7ffe900b6 (diff) | |
| download | bcm5719-llvm-d9b1a4fb710d45b2acba65d6248d91af22788c6e.tar.gz bcm5719-llvm-d9b1a4fb710d45b2acba65d6248d91af22788c6e.zip | |
[Sema] Implement __make_integer_seq
This new builtin template allows for incredibly fast instantiations of
templates like std::integer_sequence.
Performance numbers follow:
My work station has 64 GB of ram + 20 Xeon Cores at 2.8 GHz.
__make_integer_seq<std::integer_sequence, int, 90000> takes 0.25
seconds.
std::make_integer_sequence<int, 90000> takes unbound time, it is still
running. Clang is consuming gigabytes of memory.
Differential Revision: http://reviews.llvm.org/D13786
llvm-svn: 252036
Diffstat (limited to 'clang/lib/Serialization/ASTReader.cpp')
| -rw-r--r-- | clang/lib/Serialization/ASTReader.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/Serialization/ASTReader.cpp b/clang/lib/Serialization/ASTReader.cpp index c09e97c1584..b7b56f68b81 100644 --- a/clang/lib/Serialization/ASTReader.cpp +++ b/clang/lib/Serialization/ASTReader.cpp @@ -6412,6 +6412,9 @@ static Decl *getPredefinedDecl(ASTContext &Context, PredefinedDeclIDs ID) { case PREDEF_DECL_EXTERN_C_CONTEXT_ID: return Context.getExternCContextDecl(); + + case PREDEF_DECL_MAKE_INTEGER_SEQ_ID: + return Context.getMakeIntegerSeqDecl(); } llvm_unreachable("PredefinedDeclIDs unknown enum value"); } |
