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llvm-6502/lib/Transforms
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Benjamin Kramer 9589ff8949 Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types 
If the type isn't trivially moveable emplace can skip a potentially
expensive move. It also saves a couple of characters.


Call sites were found with the ASTMatcher + some semi-automated cleanup.

memberCallExpr(
    argumentCountIs(1), callee(methodDecl(hasName("push_back"))),
    on(hasType(recordDecl(has(namedDecl(hasName("emplace_back")))))),
    hasArgument(0, bindTemporaryExpr(
                       hasType(recordDecl(hasNonTrivialDestructor())),
                       has(constructExpr()))),
    unless(isInTemplateInstantiation()))

No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@238602 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-29 19:43:39 +00:00
..
Hello
InstCombine Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types 2015-05-29 19:43:39 +00:00
Instrumentation
IPO Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types 2015-05-29 19:43:39 +00:00
ObjCARC
Scalar Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types 2015-05-29 19:43:39 +00:00
Utils Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types 2015-05-29 19:43:39 +00:00
Vectorize Replace push_back(Constructor(foo)) with emplace_back(foo) for non-trivial types 2015-05-29 19:43:39 +00:00
CMakeLists.txt
LLVMBuild.txt
Makefile