Change the x86 backend to use extract_subreg for truncation operations. Passes DejaGnu, SingleSource and MultiSource.

llvm-svn: 40578

llvm-svn: 40501

llvm-svn: 40499

llvm-svn: 40441

llvm-svn: 37716

llvm-svn: 37574

llvm-svn: 37419

some small cleanup was made.

llvm-svn: 36780

should be taught to deal with protected symbols.

llvm-svn: 36565

llvm-svn: 36495

llvm-svn: 36355

X86 32 bits.

llvm-svn: 36283

it is defined in.

llvm-svn: 36196

Allow the b/h/w/k constraints to be applied to values that have multiple alternatives, and end up not being registers.

llvm-svn: 35320

llvm-svn: 35318

llvm-svn: 34519

confusion with external linkage types.

llvm-svn: 33663

for debugging and exception handling.

llvm-svn: 33550

says that no $ prefix should be emitted on X86.

llvm-svn: 33495

- In x86-64 mode, symbols with external linkage (not just symbols which are
  defined externally) requires GOT indirect reference.
- Stylistic code clean up.

llvm-svn: 33345

llvm-svn: 33323

non-statics.
* Introduce new option to output zero-initialized data to .bss section.
This can reduce size of binaries. Enable it by default for ELF &
Cygwin/Mingw targets. Probably, Darwin should be also added.

llvm-svn: 33299

llvm-svn: 33256

llvm-svn: 33198

       movq ___dso_handle@GOTPCREL(%rip)(%rip), %rsi

instead of:
        movq ___dso_handle@GOTPCREL(%rip), %rsi

llvm-svn: 33196

llvm-svn: 33191

llvm-svn: 33189

llvm-svn: 33187

* PIC-aware internal structures in X86 Codegen have been refactored
* Visibility (default/weak) has been added
* Docs fixes (external weak linkage, visibility, formatting)

llvm-svn: 33136

llvm-svn: 32969

gnu.linkonce.t.FunctionName). Convert them to "normal" LLVM names,
otherwise linker won't be able to merge them.

llvm-svn: 32958

- New target type "mingw" was introduced
- Same things for both mingw & cygwin are marked as "cygming" (as in
gcc)
- .lcomm is supported here, so allow LLVM to use it
- Correctly use underscored versions of setjmp & _longjmp for both mingw
& cygwin

llvm-svn: 32833

llvm-svn: 32703

llvm-svn: 32648

- Re-enable some codegen niceties for X86-64 static relocation model codegen.
- Clean ups, etc.

llvm-svn: 32238

llvm-svn: 32218

llvm-svn: 32067

llvm-svn: 32052

llvm-svn: 32026

llvm-svn: 31813