This implements a new flag -fcatch-undefined-behavior.  The flag turns
on additional runtime checks for:

  T a[I];

  a[i]    abort when i < 0 or i >= I.

Future stuff includes shifts by >= bitwidth amounts.

llvm-svn: 91198

(fixes radar 7465023).

llvm-svn: 91171

llvm-svn: 91156

llvm-svn: 91152

llvm-svn: 91149

correctly.

llvm-svn: 91136

llvm-svn: 91129

llvm-svn: 91127

llvm-svn: 91119

for logical not.

llvm-svn: 91112

llvm-svn: 91108

Improve linkage of RTTI data structures. Introduce CodeGenModule::GetAddrOfRTTI which figures out the right linkage of the RTTI information for the given type and whether it should be defined or not. I will migrate clients over to GetAddrOfRTTI in subsequent commits (with tests).

llvm-svn: 91098

llvm-svn: 91088

When extending the lifetime of a temporary, make sure to emit a branch to the cleanup exit block. This fixes a broken module error in LLVMCConfigurationEmitter.cpp.

llvm-svn: 91086

When an exception needs to be freed by calling __cxa_exception_free, make sure to stash away the exception pointer somewhere. 

This fixes an "Instruction does not dominate all uses!" verification error when compiling TableGen.

llvm-svn: 91084

llvm-svn: 91078

this construct, but might as well for completeness.

llvm-svn: 91071

llvm-svn: 91069

Mangle static variables inside Objective-C methods in Objective-C++. We currently mangle them the same way as gcc does.

llvm-svn: 91042

llvm-svn: 91041

llvm-svn: 91036

during throw to deallocate the exception object.  WIP.

llvm-svn: 91035

llvm-svn: 91027

llvm-svn: 91026

llvm-svn: 91012

llvm-svn: 91006

llvm-svn: 91001

llvm-svn: 91000

llvm-svn: 90998

llvm-svn: 90997

llvm-svn: 90996

(fixes radar 7457534).

llvm-svn: 90995

llvm-svn: 90994

llvm-svn: 90991

llvm-svn: 90982

was not needed (fixes radar 7453430).

llvm-svn: 90981

llvm-svn: 90940

type of the builtin when generating the function declaration for a builtin
library call.

llvm-svn: 90936

in objective-c++ mode without being too lenient.

llvm-svn: 90895

llvm-svn: 90884