A test case to test that -warn-dead-stores does not emit a warning for stores to variables marked with '#pragma unused'.

llvm-svn: 67570

llvm-svn: 67569

On a synthetic command line consisting of almost all defined options,
this drops wall time from .00494 to .00336 and user time from .00258
to .00105.

On the same benchmark, clang-driver is about 15% faster than the
primary gcc driver and almost twice as fast as the gcc driver driver.

llvm-svn: 67564

llvm-svn: 67559

llvm-svn: 67553

llvm-svn: 67552

llvm-svn: 67551

More improvements to abstract type checking. Handle arrays correctly, and make sure to check parameter types before they decay.

llvm-svn: 67550

clang doesn't support, and don't want to warn are unused. Eventually
these should disappear.

Here is a more readable list than is in the diff:

W options: -Wall, -Wcast-align, -Wchar-align, -Wchar-subscripts,
-Werror, -Wextra, -Winline, -Wint-to-pointer-cast, -Wmissing-braces,
-Wmost, -Wnested-externs, -Wno-format-y2k, -Wno-four-char-constants,
-Wno-missing-field-initializers, -Wno-trigraphs, -Wno-unknown-pragmas,
-Wno-unused-parameter, -Wparentheses, -Wpointer-arith,
-Wpointer-to-int-cast, -Wreturn-type, -Wshorten-64-to-32, -Wswitch,
-Wunused-function, -Wunused-label, -Wunused-value, -Wunused-variable,
-Wwrite-strings.

f options: -fasm-blocks, -fmessage-length=.

llvm-svn: 67549

Release-Asserts mode).

Also, avoid searching through option groups (which will never match).

llvm-svn: 67548

llvm-svn: 67543

llvm-svn: 67542

library function, accept this declaration and pretend that we do not
know that this is a library function. autoconf depends on this
(broken) behavior.

llvm-svn: 67541

This matters in assembler mode, where this is silently allowed.
This fixes rdar://6709206.

llvm-svn: 67539

<rdar://problem/6704930> involving SimpleConstraintManager not reasoning well
about symbolic constraint values involving arithmetic operators.

llvm-svn: 67534

prototype. Thanks Eli!

llvm-svn: 67533

llvm-svn: 67532

llvm-svn: 67530

llvm-svn: 67529

 - Patch by Ed Schoeten!

llvm-svn: 67527

values passed-by-reference to unknown functions.

llvm-svn: 67519

llvm-svn: 67517

Evaluate for __extension__ and __builtin_choose_expr.

llvm-svn: 67506

llvm-svn: 67503

llvm-svn: 67501

llvm-svn: 67499

llvm-svn: 67498

llvm-svn: 67497

llvm-svn: 67496

Recognize rvalue references in C++03, but complain about them. This leads to far better error recovery.

llvm-svn: 67495

incompatibilities in assignments from other pointer incompatibilities.  
Based off of the patch in PR3342.  (This doesn't implement -Wno-pointer-sign,
but I don't know the driver code very well.)

llvm-svn: 67494

situation should never occur now that arguments are parsed correctly.

llvm-svn: 67493

llvm-svn: 67492

attempting to illegally modify a BlockDeclRefExpr.

llvm-svn: 67491

llvm-svn: 67490

isObjCObjectPointerType to work with qualified types.  Adjust test for 
changes.

If the SemaExpr changes are wrong or break existing code, feel free to 
delete the "ExprTy.addConst();" line and revert my changes to 
test/Sema/block-literal.c.

llvm-svn: 67489

llvm-svn: 67488

llvm-svn: 67487

llvm-svn: 67486

llvm-svn: 67485