Eliminate exception throwing from Path::renamePathOnDisk and adjust its
users correspondingly.

llvm-svn: 29843

portion fo the program name via sys::Path().getLast(). This makes error
messages more readable since this is invariably used only in error
messages.  Instead of:
  /path/to/llvm/bin/directory/toolname: error message
we will now get:
  toolname: error message
Also, since we always have a program name (even if its defaulted), don't
check to see if it is set or not when generating error messages. This
eliminates a bunch of constant strings, saving a little under 1K of data.

llvm-svn: 29842

Remove exception throwing from Path::getDirectoryContents and its users.

llvm-svn: 29841

Remove exceptions from the Path::create*OnDisk methods. Update their users
to handle error messages via arguments and result codes.

llvm-svn: 29840

Adjust code to compensate for Path class interface change.

llvm-svn: 29837

Change the Path::make*OnDisk methods exception free and adjust their usage.

llvm-svn: 29836

llvm-svn: 29834

adjust users of it to compensate.

llvm-svn: 29831

defines each value# tracked by the interval.  This will be used to improve
coallescing.

llvm-svn: 29830

llvm-svn: 29828

a null pointer when there is an error.

llvm-svn: 29827

just return MinTime if that should ever happen.

llvm-svn: 29826

Adjust the use of MappedFile to its new non-throwing interface. We just
propagate the exceptions if an error occurs. This will get cleaned up
later, incrementally.

llvm-svn: 29820

Make the Bytecode Reader use setjmp/longjump instead of exceptions to handle
errors. The alternative was even uglier than setjmp/longjump as it would
impact the interface and workings of nearly every function in the reader.

llvm-svn: 29819

Adjust to new interface for MappedFile. Note that the new "throw"
statements will be removed later.

llvm-svn: 29818

Adjust users of MappedFile to its new non-throwing interface.  Note that in
most cases the lazy step of just throwing after a call to MappedFile was
installed. This was done in the name of incremental changes. Getting rid of
the new throw statements will take adjustment of interfaces and propagation
of errors to higher levels.  Those changes will come in subsequent patches.

llvm-svn: 29817

Make MappedFile not throw any exceptions.

llvm-svn: 29816

Fix a bug in my last patch that botched file redirection by using explicit
scoping of if statements.

llvm-svn: 29815

llvm-svn: 29814

llvm-svn: 29808

llvm-svn: 29805

*** Register mapping ***
  reg 1024 -> %reg1028
  reg 1026 -> EAX
  reg 1027 -> %reg1028

instead of:

*** Register mapping ***
  reg 1024 -> reg 1028
  reg 1026 -> reg 15
  reg 1027 -> reg 1028

llvm-svn: 29803

llvm-svn: 29802

llvm-svn: 29799

llvm-svn: 29798

llvm-svn: 29796

llvm-svn: 29794

llvm-svn: 29793

    MOV R0, R1
    MOV R1, R0

the second machine instruction is removed. Added a regression test.

llvm-svn: 29792

Adjust usage of the ExecuteAndWait function to use the last argument which
is the ErrMsg string. This is necessitated because this function no longer
throws exceptions on error.

llvm-svn: 29791

Remove all exception code from Program.inc and implement its new interface
with an ErrMsg string argument.

llvm-svn: 29790

Make sys::Program::ExecuteAndWait not throw exceptions and update any
affected code. It now return -9999 to signal that the program couldn't be
executed. Only one case (in bugpoint) actually examines the result code.

llvm-svn: 29785

llvm-svn: 29780

llvm-svn: 29771

llvm-svn: 29770

llvm-svn: 29769

1. Actually turn on -fno-exceptions in libraries that do not have the
   REQUIRES_EH option in their Makefile. The following library file size
   savings were made (DEBUG):
      libLLVMDataStructure.a  525K
      libLLVMCore.a           380K
      libLLVMCodeGen.a        350K
      libLLVMTransformUtils.a 305K
      libLLVMScalarOpts.a     270K
      libLLVMAnalysis.a       247K
      libLLVMSelectionDAG.a   233K
      libLLVMipo.a            175K
      LLVMX86.o               123K
      LLVMPPC.o                81K
      libLLVMipa.a             17K
                 TOTAL      2,706K
      Note that the savings is actually a little larger than this because
      I didn't count any of the libraries that had small changes.

2. Remove REQUIRES_EH from the AsmParser library as it is now exception
   free. This resulted in a nearly 78K drop in the size of the debug
   library for AsmParser.

llvm-svn: 29767

llvm-svn: 29765

Rid the Assembly Parser of exceptions. This is a really gross hack but it
will do until the Assembly Parser is re-written as a recursive descent.
The basic premise is that wherever the old "ThrowException" function was
called (new name: GenerateError) we set a flag (TriggerError). Every
production checks that flag and calls YYERROR if it is set. Additionally,
each call to ThrowException in the grammar is replaced with GEN_ERROR
which calls GenerateError and then YYERROR immediately. This prevents
the remaining production from continuing after an error condition.

llvm-svn: 29763

llvm-svn: 29756