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fixes a layering violation in lib/Basic/Targets.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73318 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73317 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73316 91177308-0d34-0410-b5e6-96231b3b80d8
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PCH files now contain complete information about builtins, including
any declarations that have been synthesized as part of building the
PCH file. When using a PCH file, we do not initialize builtins at all;
when needed, they'll be found in the PCH file.
This optimization translations into a 9% speedup for "Hello, World!"
with Carbon.h as a prefix header and roughly a 5% speedup for 403.gcc
with its prefix header. We're also reading less of the PCH file for
"Hello, World!":
*** PCH Statistics:
286/20693 types read (1.382110%)
1630/59230 declarations read (2.751984%)
764/44914 identifiers read (1.701029%)
1/32954 statements read (0.003035%)
5/6187 macros read (0.080815%)
down from
*** PCH Statistics:
411/20693 types read (1.986179%)
2553/59230 declarations read (4.310316%)
1093/44646 identifiers read (2.448148%)
1/32954 statements read (0.003035%)
21/6187 macros read (0.339421%)
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69815 91177308-0d34-0410-b5e6-96231b3b80d8
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builtins from marking IdentifierInfos as builtins. No functionality change
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69774 91177308-0d34-0410-b5e6-96231b3b80d8
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etc and make freestanding imply it.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66972 91177308-0d34-0410-b5e6-96231b3b80d8
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- Define pow[lf]?, sqrt[lf]? as builtins.
- Add -fmath-errno option which binds to LangOptions.MathErrno
- Add new builtin flag Builtin::Context::isConstWithoutErrno for
functions which can be marked as const if errno isn't respected for
math functions. Sema automatically marks these functions as const
when they are defined, if MathErrno=0.
- IRgen uses const attribute on sqrt and pow library functions to
decide if it can use the llvm intrinsic.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64689 91177308-0d34-0410-b5e6-96231b3b80d8
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to the LIBBUILTIN macro
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64676 91177308-0d34-0410-b5e6-96231b3b80d8
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like printf and malloc. Fixes PR3586
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64566 91177308-0d34-0410-b5e6-96231b3b80d8
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we can define builtins such as fprintf, vfprintf, and
__builtin___fprintf_chk. Give a nice error message when we need to
implicitly declare a function like fprintf.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64526 91177308-0d34-0410-b5e6-96231b3b80d8
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printf-like functions, both builtin functions and those in the
C library. The function-call checker now queries this attribute do
determine if we have a printf-like function, rather than scanning
through the list of "known functions IDs". However, there are 5
functions they are not yet "builtins", so the function-call checker
handles them specifically still:
- fprintf and vfprintf: the builtins mechanism cannot (yet)
express FILE* arguments, so these can't be encoded.
- NSLog: the builtins mechanism cannot (yet) express NSString*
arguments, so this (and NSLogv) can't be encoded.
- asprintf and vasprintf: these aren't part of the C99 standard
library, so we really shouldn't be defining them as builtins in
the general case (and we don't seem to have the machinery to make
them builtins only on certain targets and depending on whether
extensions are enabled).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64512 91177308-0d34-0410-b5e6-96231b3b80d8
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etc.) when we perform name lookup on them. This ensures that we
produce the correct signature for these functions, which has two
practical impacts:
1) When we're supporting the "implicit function declaration" feature
of C99, these functions will be implicitly declared with the right
signature rather than as a function returning "int" with no
prototype. See PR3541 for the reason why this is important (hint:
GCC always predeclares these functions).
2) If users attempt to redeclare one of these library functions with
an incompatible signature, we produce a hard error.
This patch does a little bit of work to give reasonable error
messages. For example, when we hit case #1 we complain that we're
implicitly declaring this function with a specific signature, and then
we give a note that asks the user to include the appropriate header
(e.g., "please include <stdlib.h> or explicitly declare 'malloc'"). In
case #2, we show the type of the implicit builtin that was incorrectly
declared, so the user can see the problem. We could do better here:
for example, when displaying this latter error message we say
something like:
'strcpy' was implicitly declared here with type 'char *(char *, char
const *)'
but we should really print out a fake code line showing the
declaration, like this:
'strcpy' was implicitly declared here as:
char *strcpy(char *, char const *)
This would also be good for printing built-in candidates with C++
operator overloading.
The set of C library functions supported by this patch includes all
functions from the C99 specification's <stdlib.h> and <string.h> that
(a) are predefined by GCC and (b) have signatures that could cause
codegen issues if they are treated as functions with no prototype
returning and int. Future work could extend this set of functions to
other C library functions that we know about.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64504 91177308-0d34-0410-b5e6-96231b3b80d8
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builtins.
Also, a minor tweak to va_copy for consistency.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62574 91177308-0d34-0410-b5e6-96231b3b80d8
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depend on the value of this flag, it should depend on whether
tryEvaluate is able to *actually* fold a builtin.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@57160 91177308-0d34-0410-b5e6-96231b3b80d8
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- Enabled for builtins which are always constant expressions
(__builtin_huge_val*, __builtin_inf*, __builtin_constant_p,
__builtin_classify_type, __builtin___CFStringMakeConstantString).
Added Builtin::Context::isConstantExpr.
- Currently overly simply interface which only works for builtins
whose constantexprness does not depend on their arguments.
CallExpr::isBuiltinConstantExpr now takes an ASTContext argument.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56983 91177308-0d34-0410-b5e6-96231b3b80d8
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wasn't covering checking builtins like __builtin___vsnprintf_chk) with
a check that won't get out of date.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@56767 91177308-0d34-0410-b5e6-96231b3b80d8
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discussion of this change.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45410 91177308-0d34-0410-b5e6-96231b3b80d8
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just as efficient and much more succinct.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43614 91177308-0d34-0410-b5e6-96231b3b80d8
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git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@43574 91177308-0d34-0410-b5e6-96231b3b80d8
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attribute.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@41631 91177308-0d34-0410-b5e6-96231b3b80d8
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