This adds location info for all llvm_unreachable calls (which is a macro now) in
!NDEBUG builds.
In NDEBUG builds location info and the message is off (it only prints
"UREACHABLE executed").

llvm-svn: 75640

--- Reverse-merging r75619 into '.':
U    lib/Target/DarwinTargetAsmInfo.cpp
U    lib/CodeGen/AsmPrinter/AsmPrinter.cpp
--- Reverse-merging r75618 into '.':
U    lib/CodeGen/ELFWriter.cpp
U    lib/CodeGen/MachOCodeEmitter.cpp
U    lib/CodeGen/MachOWriter.cpp
--- Reverse-merging r75617 into '.':
U    lib/Target/CBackend/CBackend.cpp
--- Reverse-merging r75616 into '.':
U    tools/bugpoint/Miscompilation.cpp
U    tools/lto/LTOCodeGenerator.cpp
U    tools/lto/LTOModule.cpp

llvm-svn: 75638

--- Reverse-merging r75615 into '.':
U    lib/Target/XCore/XCoreAsmPrinter.cpp
U    lib/Target/PIC16/PIC16AsmPrinter.cpp
U    lib/Target/X86/AsmPrinter/X86IntelAsmPrinter.cpp
U    lib/Target/MSP430/MSP430AsmPrinter.cpp
U    lib/Target/IA64/AsmPrinter/IA64AsmPrinter.cpp
U    lib/Target/CellSPU/AsmPrinter/SPUAsmPrinter.cpp
U    lib/Target/ARM/AsmPrinter/ARMAsmPrinter.cpp
U    lib/Target/PowerPC/AsmPrinter/PPCAsmPrinter.cpp
U    lib/Target/Alpha/AsmPrinter/AlphaAsmPrinter.cpp
U    lib/Target/MSIL/MSILWriter.cpp
U    lib/Target/Sparc/AsmPrinter/SparcAsmPrinter.cpp
U    lib/Target/Mips/AsmPrinter/MipsAsmPrinter.cpp

llvm-svn: 75637

unbreaking llvm-gcc (on Darwin).

--- Reverse-merging r75620 into '.':
U    include/llvm/Support/Mangler.h
--- Reverse-merging r75610 into '.':
U    test/CodeGen/X86/loop-hoist.ll
G    include/llvm/Support/Mangler.h
U    lib/Target/X86/AsmPrinter/X86ATTAsmPrinter.cpp
U    lib/VMCore/Mangler.cpp

llvm-svn: 75636

users from the Scalars map.

llvm-svn: 75634

This results in the pass manager running IVUsers only once for
indvars, instead of twice.

llvm-svn: 75633

even when they're obvious.

llvm-svn: 75632

Fix by making the LLVM_UNREACHABLE pass __FILE__ and __LINE__ to
llvm_unreachable.

llvm-svn: 75631

llvm-svn: 75630

extension to another bit width. This is needed to get correct singed value.
Patch by Artur Pietrek!

llvm-svn: 75629

llvm-svn: 75628

 - Add getExecutionCount(const Function).

 - Add helper Edge type.

 - constify.

 - No functionality change.

llvm-svn: 75623

dubious looking things that I need to investigate in more detail.

llvm-svn: 75619

llvm-svn: 75618

llvm-svn: 75617

llvm-svn: 75615

llvm-svn: 75611

to symbols instead of doing it with "printSuffixedName".  This gets us to the point
where there is a real separation between computing a symbol name and printing it,
something I need for MC printer stuff.

This patch also fixes a corner case bug where unnamed private globals wouldn't get
the private label prefix.

Next up, rename all uses of getValueName -> getMangledName for better greppability,
and then tackle the ppc/arm backends to eliminate "printSuffixedName".

llvm-svn: 75610

indicates whether the label is private or not, instead of taking
prefix stuff.  One effect of this is that symbols will be generated
with *just* the private prefix, instead of both the private prefix
*and* the user-label-prefix, but this doesn't matter as long as it
is consistent.  For example we'll now get "Lfoo" instead of "L_foo".
These are just assembler temporary labels anyway, so they never even
make it into the .o file.

llvm-svn: 75607

llvm-svn: 75586

2. BX does not "use" the link register, it defines it.
3. Fix a couple more places in thumb td file that still uses pre-UAL syntax.

llvm-svn: 75585

function.

llvm-svn: 75584

llvm-svn: 75581

block has a single unique exiting block.

llvm-svn: 75579

works similar to isLoopInvariant, except that it will do trivial
hoisting to try to make the value loop invariant if it isn't already.
This makes it easier for transformation passes to clear trivial
instructions out of the way (the regular LICM pass doesn't run
until relatively late). This is code factored out of LoopSimplify
and other places.

llvm-svn: 75578

llvm-svn: 75577

llvm-svn: 75576

llvm-svn: 75574

Fix pr4544. When remating, make sure the destination register fits the instruction definition. It may be mismatched due to sub-register coalescing. 
No test case yet because the code doesn't trigger until 75408 is re-applied.

llvm-svn: 75572

xor R, R is a common and valid idiom for zeroing a register, for example.

llvm-svn: 75571

llvm-svn: 75568

llvm-svn: 75567

llvm-svn: 75566

llvm-svn: 75565

llvm-svn: 75564

llvm-svn: 75562

descriptive.  Thange them to keep track of the ID of a global that is
assigned, not the first mangled name returned for it.  Without doing this,
we are required to always use the same suffix for a global that gets 
mangled.  This means that we can mangle the same global once with $stub
and another time with $non_lazy_ptr or whatever.

llvm-svn: 75561

llvm-svn: 75559

local symbols and we haven't had type planes since llvm 1.9.

llvm-svn: 75558

used with globals.

llvm-svn: 75557