- getSourceRange() can be very expensive, we should try to avoid it if at all possible.
In conjunction with the previous commit I measured a ~2% speedup on 403.gcc/combine.c and a 3% speedup on OmniGroupFrameworks/NSBezierPath-OAExtensions.m.
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- There are probably a lot more of these worth adding, but these are a start at hitting some of the exprs for which getSourceRange().getBegin() is a poor substitute for getLocStart().
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- On -emit-llvm-only of 403.gcc/combine.c, for example, we make 160k calls to
getTypeInfo but only ever deal with 680 some distinct types.
I saw these speedups (user time):
403.gcc/combine.c -- 3.1%
OmniGroupFrameworks/NSBezierPath-OAExtensions.m -- 3.6%
JavaScriptCore/Interpreter.cpp -- 1.4%
which seems pretty sweet.
I ran some histograms on those compiles and we end up doing a ton of
getTypeInfo() on 'char' and 'int'. I tried splitting out a fast path for builtin
types, but this wasn't a win. Still kinda seems like we could be doing better
here.
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- This function is not at all free; pass it around along some hot paths instead
of recomputing it deep inside various VarDecl methods.
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- This change seems to be a tiny loss on 403.gcc/combine.c (.2%), but I think
it is the right thing to do.
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analysis to make the AST representation testable. They are represented by a
new UserDefinedLiteral AST node, which is a sugared CallExpr. All semantic
properties, including full CodeGen support, are achieved for free by this
representation.
UserDefinedLiterals can never be dependent, so no custom instantiation
behavior is required. They are mangled as if they were direct calls to the
underlying literal operator. This matches g++'s apparent behavior (but not its
actual mangling, which is broken for literal-operator-ids).
User-defined *string* literals are now fully-operational, but the semantic
analysis is quite hacky and needs more work. No other forms of user-defined
literal are created yet, but the AST support for them is present.
This patch committed after midnight because we had already hit the quota for
new kinds of literal yesterday.
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NSNumber, and boolean literals. This includes both Sema and Codegen support.
Included is also support for new Objective-C container subscripting.
My apologies for the large patch. It was very difficult to break apart.
The patch introduces changes to the driver as well to cause clang to link
in additional runtime support when needed to support the new language features.
Docs are forthcoming to document the implementation and behavior of these features.
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- These functions are both (a) very commonly called and (b) excellent
candidates for CSE in the callers in which they are commonly used.
- That isHalfType() is hot makes me sad, but it is trivially when inlined (and
a huge waste of time when not!!!).
- The extra IsEnumDeclComplete() function is a hack to break the cycle between
Type.h and Decl.h, I'm not sure of how to do this more cleanly, but am open
to ideas.
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ASTContext::getUnaryTransformType. This can happen if, for example,
an enumeration's underlying type is a typedef.
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Migrate two other places where the same logic is used to use the helper function that already exists.
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early, since their values can be used in constant expressions in C++11. For
odr-use checking, the opposite change is required, since references are
odr-used whether or not they satisfy the requirements for appearing in a
constant expression.
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have matching user defined setter/getter and a warning is issued.
In this case, a fixit note is displayed. // rdar://10267155
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The bug that was caught by Apple's internal buildbots was valid and also showed another bug in my implementation.
These are now fixed, with regression tests added to catch them both (not Darwin-specific).
Original log:
====================
Revert r151638 because it causes assertion hit on PCH creation for Cocoa.h
Original log:
---------------------
Correctly track tags and enum members defined in the prototype of a function, and ensure they are properly scoped.
This fixes code such as:
enum e {x, y};
int f(enum {y, x} n) {
return 0;
}
This finally fixes PR5464 and PR5477.
---------------------
I also reverted r151641 which was enhancement on top of r151638.
====================
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Original log:
---------------------
Correctly track tags and enum members defined in the prototype of a function, and ensure they are properly scoped.
This fixes code such as:
enum e {x, y};
int f(enum {y, x} n) {
return 0;
}
This finally fixes PR5464 and PR5477.
---------------------
I also reverted r151641 which was enhancement on top of r151638.
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This fixes code such as:
enum e {x, y};
int f(enum {y, x} n) {
return 0;
}
This finally fixes PR5464 and PR5477.
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depth and error if we exceed a max value, to make sure we avoid a stack overflow.
This is a hacky temporary fix. rdar://10913206.
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There's more potential here, but these Exprs aren't used that often so I don't feel like doing heroic bit packing right now.
-8 bytes on every class changed (x86_64).
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Original log:
When evaluating integer expressions handle logical operators outside
VisitBinaryOperator() to reduce stack pressure for source with huge number
of logical operators.
Fixes rdar://10913206.
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VisitBinaryOperator() to reduce stack pressure for source with huge number
of logical operators.
Fixes rdar://10913206.
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data members for deleted or user-provided destructors.
Now it's computed in advance, serialize it, and in passing fix all the other
record DefinitionData flags whose serialization was missing.
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the declaration, not at the type of the DeclRefExpr, since within a lambda the
DeclRefExpr can be more const than the declaration is.
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Daniel Dunbar
Richard Smith
Benjamin Kramer
Douglas Gregor
Eli Friedman
Ted Kremenek
Argyrios Kyrtzidis
Peter Collingbourne
James Molloy
Fariborz Jahanian
Sebastian Redl
Ahmed Charles
Nick Lewycky