volatile memory references are safe to move.

llvm-svn: 56948

local register allocator's physreg liveness doesn't recognize subregs,
so it doesn't know that defs of %ecx that are immediately followed by
uses of %cl aren't dead. This comes up due to the way fast-isel emits
shift instructions.

This is a temporary workaround. Arguably, local regalloc should
handle subreg references correctly. On the other hand, perhaps
fast-isel should use INSERT_SUBREG instead of just assigning to the
most convenient super-register of %cl when lowering shifts.

This fixes MultiSource/Benchmarks/MallocBench/espresso,
MultiSource/Applications/hexxagon, and others, under -fast.

llvm-svn: 56947

a constant vector ("{0x123, 0x456}" syntax).  The fix is to simplify the
_mm_srli_si128 macro, and  move the "* 8" from the macro into the compiler
back-end.  I can't change the existing __builtins because so many people are
using them :-(."
Patch by Stuart Hastings!

llvm-svn: 56944

OS version part to that of the host on darwin.

llvm-svn: 56943

& version as strings.
 - Win32 code is untested.

llvm-svn: 56942

llvm-svn: 56941

number of instructions.

llvm-svn: 56940

llvm-svn: 56939

Expand checking to include functions, not just methods.

llvm-svn: 56938

llvm-svn: 56937

llvm-svn: 56936

llvm-svn: 56930

patch provided by Tomas Lindquist Olsen!

llvm-svn: 56929

llvm-svn: 56927

This fixes failures on configurations that don't have one or the
other targets enabled.

llvm-svn: 56926

This allows the 64-bit forms to use+def RSP instead of ESP. This
doesn't fix any real bugs today, but it is more precise and it
makes the debug dumps on x86-64 look more consistent.

Also, add some comments describing the CALL instructions' physreg
operand uses and defs.

llvm-svn: 56925

llvm-svn: 56924

pointer bitcasts and GEP's", and centralize the
logic in Value::getUnderlyingObject.  The
difference with stripPointerCasts is that
stripPointerCasts only strips GEPs if all
indices are zero, while getUnderlyingObject
strips GEPs no matter what the indices are.

llvm-svn: 56922

immediately.

llvm-svn: 56921

llvm-svn: 56920

llvm-svn: 56919

llvm-svn: 56918

llvm-svn: 56917

llvm-svn: 56916

llvm-svn: 56915

llvm-svn: 56912

llvm-svn: 56911

llvm-svn: 56910

llvm-svn: 56909

instruction, not after. This fixes some uses of free'd memory.

llvm-svn: 56908

 - So far this works fairly well for me for building applications
   using clang as a gcc substitute. If you are using ccc for a
   different purpose and this is a problem, speak up! Note you can
   also use CCC_NATIVE=0 to disable.

 - Also, turn CCC_ECHO off as default.

 - Also, pass through -Wl, to linker.

llvm-svn: 56904

llvm-svn: 56902

llvm-svn: 56901

llvm-svn: 56900

collisions.
 - Provide CodeGenModule::CreateRuntimeFunction which guarantees that
   the function it creates will have the provided name in the final
   module. This allows the runtime to have its functions protected
   from declarations of the same name in the source code.

 - One could argue that this is a reason to abuse the llvm::Module
   namespace for dealing with function redeclarations. However, that
   approach seems conceptually flawed to me. This one also happens to
   be somewhat more efficient.

No functionality change.

llvm-svn: 56899

llvm-svn: 56896

Use this updated interface when invalidating arguments passed by reference; the type of symbol is of the object passed by reference, not the reference itself.

llvm-svn: 56894

llvm-svn: 56893

llvm-svn: 56892

llvm-svn: 56891