Patch by Jai Menon.

llvm-svn: 126165

Skipping over debugvalue instructions to determine whether the split spot is in a IT block. rdar://9030770

llvm-svn: 126159

In other words, do not keep track of argument's location.  The debugger (gdb) is not prepared to see line table entries for arguments. For the debugger, "second" line table entry marks beginning of function body.
This requires some coordination with debugger to get this working. 
 - The debugger needs to be aware of prolog_end attribute attached with line table entries.
 - The compiler needs to accurately mark prolog_end in line table entries (at -O0 and at -O1+)

llvm-svn: 126155

X86 instruction decode structure was being interpreted as
being in units of bits, although it is actually stored in
units of bytes.

llvm-svn: 126147

llvm-svn: 126132

llvm-svn: 126130

but which is responsible for us doing really bad things to 256.bzip2.

llvm-svn: 126126

"dllimport" function must not be GlobalVariable, but Function. It is enough to check with GlobalValue.
test/CodeGen/X86/dll-linkage.ll is updated to check llc -O0.

llvm-svn: 126110

llvm-svn: 126108

llvm-svn: 126103

llvm-svn: 126101

on Core 2 and Nehalem, so the code we generate is better than GCC's here.

llvm-svn: 126100

of a constant had a minor typo introduced when copying it from the book, which
caused it to favor negative approximations over positive approximations in many
cases. Positive approximations require fewer operations beyond the multiplication.

In the case of division by 3, we still generate code that is a single instruction
larger than GCC's code.

llvm-svn: 126097

since one needs to be a register operand. Just use movss instead of forcing
an operand into a register.

Fixes PR9239

llvm-svn: 126072

of testing for its presence at cmake time.

This way the build automatically regenerates the makefiles when a svn
update brings in a new sublibrary.

llvm-svn: 126068

llvm-svn: 126054

This is reasonable to do since all bt-mem forms do the
same thing.

llvm-svn: 126047

llvm-svn: 126018

llvm-svn: 126004

llvm-svn: 125978

llvm-svn: 125968

query about available library functions.  For now this just has 
memset_pattern16, which exists on darwin, but it can be extended for a 
bunch of other things in the future.

llvm-svn: 125965

llvm-svn: 125949

testcases for the disassembler to make sure it still works for "msr".

llvm-svn: 125948

llvm-svn: 125832

llvm-svn: 125805

Validate encoding of leave in 64bit mode.

llvm-svn: 125795

[AVX] Recorganize X86ShuffleDecode into its own library
(LLVMX86Utils.a) to break cyclic library dependencies between
LLVMX86CodeGen.a and LLVMX86AsmParser.a.  Previously this code was in
a header file and marked static but AVX requires some additional
functionality here that won't be used by all clients.  Since including
unused static functions causes a gcc compiler warning, keeping it as a
header would break builds that use -Werror.  Putting this in its own
library solves both problems at once.

llvm-svn: 125765

these patterns.

llvm-svn: 125759

No one uses *-mingw64. mingw-w64 is represented as {i686|x86_64}-w64-mingw32. In llvm side, i686 and x64 can be treated as similar way.

llvm-svn: 125747

llvm-svn: 125746

llvm-svn: 125738

llvm-svn: 125702

llvm-svn: 125681

other getNode() methods.  Radar 9002173.

llvm-svn: 125665

llvm-svn: 125660

llvm-svn: 125659

llvm-svn: 125658

llvm-svn: 125629

Some single precision VFP instructions may be executed on NEON pipeline, but not double precision ones.

llvm-svn: 125624