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2009-04-29tweak warning options to be more like gcc:Chris Lattner
1. All all variants of -Wformat*, make them imply -Wformat. GCC warns if you use -Wformatfoo without -Wformat. We just make one imply the other. 2. Make -Wformat-nonliteral default to off, like gcc. It is an incredible nuisance. 3. Accept but currently ignore -Wformat-extra-args. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70362 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-29Implement sema checking for noreturn.Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70353 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28add support for -Wendif-labels, PR4101Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70335 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Make all PCH-incompatibility warnings into errors, and abortDouglas Gregor
compilation if the user requested a PCH file but no such PCH file exists. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70332 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Make the PCH reader use the diagnostics system for its complaints.Douglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70330 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Implement -Wfour-char-constants, which is an extension, not an extwarn,Chris Lattner
and apparently not part of -Wall git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70329 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Fix a typo noticed by GaborDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70323 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Replace a lame fprintf with a slightly-less lame diagnosticDouglas Gregor
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70322 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Implement checking for macro definitions that occur on the commandDouglas Gregor
line when using a PCH that were not provided when building the PCH file. If those names were used as identifiers somewhere in the PCH file, reject the PCH file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70321 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Allow some differences between the predefines buffer used to build aDouglas Gregor
PCH file and the predefines buffer used when including the PCH file. We (explicitly) detect conflicting macro definitions (rejecting the PCH file) and about missing macro definitions (they'll be automatically pulled from the PCH file anyway). We're missing some checking to make sure that new macro definitions won't have any impact on the PCH file itself (e.g., #define'ing an identifier that the PCH file used). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70316 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28implement -WmulticharChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70315 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Remove unused LangOptions NoExtensions and Boolean.Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70282 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Simplify the scheme used for keywords, and change the classification Eli Friedman
scheme to be more useful. The new scheme introduces a set of categories that should be more readable, and also reflects what we want to consider as an extension more accurately. Specifically, it makes the "what is a keyword" determination accurately reflect whether the keyword is a GNU or Microsoft extension. I also introduced separate flags for keyword aliases; this is useful because the classification of the aliases is mostly unrelated to the classification of the original keyword. This patch treats anything that's in the implementation namespace (prefixed with "__", or "_X" where "X" is any upper-case letter) as a keyword without marking it as an extension. This is consistent with the standards in that an implementation is allowed to define arbitrary extensions in the implementation namespace without violating the standard. This gets rid of all the nasty "extension used" warnings for stuff like __attribute__ in -pedantic mode. We still warn for extensions outside of the the implementation namespace, like typeof. If someone wants to implement -Wextensions or something like that, we could add additional information to the keyword table. This also removes processing for the unused "Boolean" language option; such an extension isn't supported on any other C implementation, so I don't see any point to adding it. The changes to test/CodeGen/inline.c are required because previously, we weren't actually disabling the "inline" keyword in -std=c89 mode. I'll remove Boolean and NoExtensions from LangOptions in a follow-up commit. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70281 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-28Don't allow blocks to be declared as returning an array. Radar 6441502Mike Stump
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70277 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Add a header containing the Clang version; make the driver use thisDouglas Gregor
Clang version value rather than hard-coding "1.0". Add PCH and Clang version information into the PCH file. Reject PCH files with the wrong version information. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70264 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Track down return statements in the handlers of a function-try-block of ↵Sebastian Redl
constructors. Meh ... git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70256 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Be more careful in our teardown of the PCHReader after deciding toDouglas Gregor
ignore a PCH file. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70251 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Improve validation of C++ exception handling: diagnose throwing incomplete ↵Sebastian Redl
types and jumps into protected try-catch scopes. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70242 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Implement caching of stat() calls for precompiled headers, which isDouglas Gregor
essentially the same thing we do with pretokenized headers. stat() caching improves performance of the Cocoa-prefixed "Hello, World" by 45%. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70223 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Load most of the source manager's information lazily from the PCHDouglas Gregor
file. In particular, only eagerly load source location entries for files and for the predefines buffer. Other buffers and macro-instantiation source location entries are loaded lazily. With the Cocoa-prefixed "Hello, World", we only load 815/26555 source location entities. This halves the amount of user time we spend in this "Hello, World" program with -fsyntax-only (down to .007s). This optimization is part 1 of 2 for the source manager. This eliminates most of the user time in loading a PCH file. We still spend too much time initialize File structures (especially in the calls to stat), so we need to either make the loading of source location entries for files lazy or import the stat cache from the PTH implementation. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70196 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27rdar://6827200 - [sema] reject statically allocated arrays of interface typesChris Lattner
Upgrade "array of interface" warning to an error. In addition to being a terrible idea, this crashes codegen. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70178 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27Change our silencing of C typedef redefinition handling to what we hadChris Lattner
before r69391: typedef redefinition is an error by default, but if *either* the old or new definition are from a system header, we silence it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70177 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27make -Wtypedef-redefinition an extwarn instead of defaultingChris Lattner
to error, doing this breaks too many programs (e.g. Adium). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70170 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26Some fixes for PCH (de-)serialization of Objective-C AST nodes:Douglas Gregor
- Deal with the Receiver/ClassInfo shared storage in ObjCMessageExpr - Implement PCH support for ImplicitParamDecl - Fix the handling of the body of an ObjCMethodDecl - Several cast -> cast_or_null fixes - Make Selector::getIdentifierInfoForSlot work for 1-argument, NULL selectors. - Make Selector::getAsString() work with NULL selectors. - Fix the names of VisitObjCAtCatchStmt and VisitObjCAtFinallyStmt in the PCH reader and writer; these were never getting called. At this point, all of the pch-test tests pass for C and Objective-C. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70163 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26Add a bit more handling for declarations like "int a[*]".Eli Friedman
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70162 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26Implement function-try-blocks. However, there's a very subtle bug that I ↵Sebastian Redl
can't track down. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70155 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26implement PR4077: [Linux kernel] inscrutable error on inline asm ↵Chris Lattner
input/output constraint mismatch Before we emitted: $ clang t.c -S -m64 llvm: error: Unsupported asm: input constraint with a matching output constraint of incompatible type! Now we produce: $ clang t.c -S -m64 t.c:5:40: error: unsupported inline asm: input with type 'unsigned long' matching output with type 'int' asm volatile("foo " : "=a" (a) :"0" (b)); ~~~ ~^~ git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70142 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26in a tied operand, don't copy over the name or constraint string, just the ↵Chris Lattner
flags. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70137 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26pull operands names "[foo]" into ConstraintInfo.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70136 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26pull the constraint string into the ConstraintInfo structChris Lattner
instead of passing it around in addition to it. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70135 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26Add missing include. This fixes the build with gcc 4.3.3.Torok Edwin
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70115 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-26change TargetInfo::ConstraintInfo to be a struct that containsChris Lattner
the enum along with some other data. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70114 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Fix for PR4074: allow subscripting non-lvalue arrays in C90 mode.Eli Friedman
I wasn't originally going to use this approach, but cases like test/Sema/expr-comma.c make things difficult. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70096 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Lazily load the controlling macros for all of the headers known in theDouglas Gregor
PCH file. In the Cocoa-prefixed "Hello, World" benchmark, this takes us from reading 503 identifiers down to 37 and from 470 macros down to 4. It also results in an 8% performance improvement. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70094 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25minor diagnostics improvements.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70092 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25fix PR4073 by making designated initializer checking code useChris Lattner
VerifyIntegerConstantExpression instead of isIntegerConstantExpr. This makes it ext-warn but tolerate things that fold to a constant but that are not valid i-c-e's. There must be a bug in the i-c-e computation though, because it doesn't catch this case even with pedantic. This also switches the later code to use EvaluateAsInt which is simpler and handles everything that evaluate does. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70081 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Revert my changes that try to avoid creating StringMap entries forDouglas Gregor
identifiers. They don't yet work, but will inhibit future optimizations. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70071 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Start implementing the PTH IdentifierInfo-saving trick in PCH,Douglas Gregor
allocating IdentifierInfos with a pointer into the string data stored in the PCH file rather than having an entry in the identifier table's string map. However, we don't actually get these savings at the moment, because we go through the IdentifierTable when loading identifiers from the on-disk hash table. This commit is for record-keeping purposes only. I'll be reverting this change (and the PCH layout tweak that preceded it) because it appears that implementing this optimization will collide with another, future optimization to reduce the size of the on-disk hash table for identifiers. That optimization is likely to provide more benefit (with less voodoo). git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70070 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25improve a diagnostic to make more sense.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70062 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-25Add new checker-specific attribute 'objc_ownership_retain'. This isn't hooked upTed Kremenek
to the checker yet, but essentially it allows a user to specify that an Objective-C method or C function increments the reference count of a passed object. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70005 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24reject explicit pointer arithmetic on interface pointers in 64-bit objc ABIChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@70004 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24PCH support for the global method pool (= instance and factory methodDouglas Gregor
pools, combined). The methods in the global method pool are lazily loaded from an on-disk hash table when Sema looks into its version of the hash tables. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69989 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24Fix rdar://6821047 - clang crashes on subscript of interface in 64-bit modeChris Lattner
Several changes here: 1. We change Type::isIncompleteType to realize that forward declared interfaces are incomplete. This eliminate special case code for this from the sizeof path, and starts us rejecting P[4] when P is a pointer to an incomplete interface. 2. Explicitly reject P[4] when P points to an interface in non-fragile ABI mode. 3. Switch the sizeof(interface) diagnostic back to an error instead of a warning in non-fragile abi mode. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69943 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-23accept and ignore -WconversionChris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69914 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-23Fix rdar://6819438 - -Wmissing-noreturn not recognised by clang,Chris Lattner
by accepting and ignoring it for now. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69897 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-23Add PCH read/write support for Objective-C Selectors.Steve Naroff
Note: This support is non-lazy. Once we get "Cocoa.h" humming, we can optimize this. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69884 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-23Silence warnings about common forms of -Wstrict-aliasing etc.Chris Lattner
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69861 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Remove the serialization code that predates precompiledDouglas Gregor
headers. Future approaches to (de-)serializing ASTs will be based on the PCH infrastructure. git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69828 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-22Fix some mishandling of the attr(gnu_inline) mode when used withChris Lattner
extern. Previously we would warn about it and ignore the attribute. This is incorrect, it should be handled as a c89 "extern inline" function. Many thanks to Matthieu Castet for pointing this out and beating me over the head until I got it. PR3988: extern inline function are not externally visible git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69756 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-21Tighten up blocks type checking. This was discussed back in theMike Stump
r56595 timeframe, but left undone. Radar 6812711 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@69745 91177308-0d34-0410-b5e6-96231b3b80d8
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