- I think we should get rid of this distinction though, but I need to discuss with the interested parties.
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- We aren't going to fix these since they haven't caused problems in practice.
- Similarly, don't forward -object to Darwin ld.
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using -traditional and -traditional-cpp with clang an error because
it's unsupported in clang and causes a significant change in the
semantics of the language.
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with a particular system root directory and can be used with a different
system root directory when the headers it depends on have been installed.
Relocatable precompiled headers rewrite the file names of the headers used
when generating the PCH file into the corresponding file names of the
headers available when using the PCH file.
Addresses <rdar://problem/7001604>.
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function attributes. There are predefined macros that are defined when stack
protectors are used: __SSP__=1 with -fstack-protector and __SSP_ALL__=2 with
-fstack-protector-all.
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compiled with -fobjc-sender-dependent-dispatch. This is used in AOP, COP, implementing object
planes, and a few other things.
Patch by David Chisnall.
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- We could just warn about -fno-unit-at-a-time, but in practice people using it
probably aren't going to get what they want out of clang.
Also, use "clang" specified error for unsupported things instead of driver
unsupported error.
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- Default to yonah on Darwin (to get SSE3).
- Default to Pentium4 (32-bit) and x86-64 (64-bit) on
non-Darwin. Welcome to the 21st century.
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- This is a WIP...
- This adds -march= handling to the driver, and fixes the defaulting
of -mcpu on Darwin (which was using the wrong test).
Instead of handling -m{sse, ...} in the driver, pass them to clang-cc as
-target-feature [+-]name
In clang-cc, communicate with the (clang) target to discover the legal
features of a target, and the features which are enabled based on
-mcpu. This is currently hardcoded just enough to not be a feature
regression, we need to get this information from the backend's
TableGen information somehow.
This is used to construct the full list of features which are being
used, which is in turn used to initialize the predefines.
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- This implements gcc style Objective-C interface layout (I
think). Currently it is always off, there is no functionality
change unless this is passed.
For the curious, the deal is that gcc lays out the fields of a
subclass as if they were part of the superclass. That is, the
subclass fields immediately follow the super class fields instead
of being padded to the alignment of the superclass structure.
- Currently gcc uses the tight layout in 32-bit and 64-bit modes, and
llvm-gcc uses it in 32-bit only, for reasons which aren't clear
yet. We probably want to switch to matching gcc, once this makes it
through testing... my hope is that we can also fix llvm-gcc in
order to maintain compatibility between the compilers.
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Also, put a line of whitespace between the diagnostic and the source
code/caret line when the start of the actual source code text lines up
(or nearly lines up) with the most recent line of the diagnostic. For
example, here it's okay for the last line of the diagnostic to be
(vertically) next to the source line, because there is horizontal
whitespace to separate them:
decl-expr-ambiguity.cpp:12:16: error: function-style cast to a builtin
type can only take one argument
typeof(int)(a,5)<<a;
However, here is a case where we need the vertical separation (since
there is no horizontal separation):
message-length.c:10:46: warning: incompatible pointer types initializing 'void
(int, float, char, float)', expected 'int (*)(int, float, short,
float)'
int (*fp1)(int, float, short, float) = f;
This is part one of <rdar://problem/6711348>.
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regardless of extension.
- Otherwise we can't expect that just plugging in -ccc-pch-is-pch
will work.
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- This can be used to supply a default value for -std=; the idea is
that this can be used in conjunction with CCC_ADD_ARGS or
QA_OVERRIDE_GCC3_OPTIONS to change the default without having to
modify the build system.
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- Otherwise, we will end up with stray .dSYM files which don't get
lipo'ed or removed.
- Ideally we would run dsymutil on the result, but we don't have the
infrastructure for that yet. Note that gcc doesn't handle this case
either.
- <rdar://problem/6809621> [driver] clang leaves .dSYM files lying
around in tmp.
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-funsigned-bitfields for now (clang defaults to -fsigned-bitfields).
- <rdar://problem/6790309> ER: Support
-fsigned-bitfields/-funsigned-bitfields
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up adding them twice when running with -no-integrated-cpp or
-save-temps.
- <rdar://problem/6766636> -save-temps falls over with prefix headers
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- Add -static-define option driver can use when __STATIC__ should be
defined (instead of __DYNAMIC__).
- Don't set __OPTIMIZE_SIZE__ on Os, __OPTIMIZE_SIZE__ is tied to Oz.
- Set __NO_INLINE__ following GCC 4.2.
- Set __GNU_GNU_INLINE__ or __GNU_STDC_INLINE__ following GCC 4.2.
- Set __EXCEPTIONS for Objective-C NonFragile ABI.
- Set __STRICT_ANSI__ for standard conforming modes.
- I added a clang style test case in utils for this, but its not
particularly portable and I don't think it belongs in the test
suite.
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- This is pretty ugly, but the most obvious solution. Chime in if you
have a nicer one.
- The problem is that with -save-temps, clang-cc has no idea what the
name of the original input file is. However, the user expects to be
able to set breakpoints based on the input file name.
- We support this by providing a new option -main-file-name (similar
to -dumpbase used by gcc) which allows the driver to pass in the
original file name.
- <rdar://problem/6753383> building with clang using --save-temps
gets the compile unit name from the .i file...
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- Add -pic-level clang-cc option to specify the value for the define,
updated driver to pass this.
- Added __pic__
- Added OBJC_ZEROCOST_EXCEPTIONS define while I was here (to match gcc).
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- Groups are really just intended to hold inherent structure of the
options, not be abused for individual tool argument translation.
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clang.
- We will eventually want some more driver infrastructre for this
probably.
- For now, the clang-cc interface stays relatively the same, but we
don't accept multiple instances anymore, or the [no-] variants
directly.
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- Ignore some more -W options and -[fm] options which we can somewhat
safely ignore.
- Recognize that -W is an alias for -Wextra
W: -Wdeclaration-after-statement -Werror-implicit-function-declaration -Wfour-char-constants -Winit-self -Wmissing-format-attribute -Wno-#warnings -Wno-comment -Wno-long-long -Wno-variadic-macros -Wold-style-definition -Wstrict-prototypes -Wunused-parameter
f: -fconstant-cfstrings -fdollars-in-identifiers -finline -finline-functions -fno-inline -fno-keep-inline-functions -fno-strict-aliasing -fobjc-atdefs -fobjc-call-cxx-cdtors -fobjc-new-property -fstack-protector
m: -mconstant-cfstrings -mfix-and-continue
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preceeded by a linker input flag.
- <rdar://problem/6757236> clang should make a dSYM when going
straight from source to binary
- This still matches gcc, but the right way to solve this would be to
detect the situation we care about (we are compiling from source
and linking in one step), instead of looking at the suffix of the
input file. The Tool doesn't quite have enough information to do
this yet, however.
- Also, find the suffix correctly.
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- PR3922
- I have a clean solution for this in flight, but it may take a while
to come to fruition so we'll take a quick fix for now.
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Daniel Dunbar
Mike Stump
David Chisnall
Edward O'Callaghan
Benjamin Kramer
Ted Kremenek
Eli Friedman
Douglas Gregor
Bill Wendling
Devang Patel
Torok Edwin
Fariborz Jahanian
Chris Lattner
Ed Schouten