Before:
_main:
        subq    $8, %rsp
        leaq    _X(%rip), %rax
        movsd   8(%rax), %xmm1
        movss   _X(%rip), %xmm0
        call    _t
        xorl    %ecx, %ecx
        movl    %ecx, %eax
        addq    $8, %rsp
        ret
Now:
_main:
        subq    $8, %rsp
        movsd   _X+8(%rip), %xmm1
        movss   _X(%rip), %xmm0
        call    _t
        xorl    %ecx, %ecx
        movl    %ecx, %eax
        addq    $8, %rsp
        ret

Notice there is another idiotic codegen issue that needs to be fixed asap:
xorl    %ecx, %ecx
movl    %ecx, %eax

llvm-svn: 46850

llvm-svn: 46681

llvm-svn: 46198

on 64-bit builds.  Analysis and original patch
by Török Edwin.  Code audit found another place
with the same problem, also fixed here.

llvm-svn: 45746

llvm-svn: 45494

llvm-svn: 45418

Now both subtarget define getMaxInlineSizeThreshold and the expansion uses it.

This should not change generated code.

llvm-svn: 43552

llvm-svn: 40701

Almost all occurrences of "bytecode" in the sources have been eliminated.

llvm-svn: 37913

llvm-svn: 36177

replaced it with a FIXME should have determined what did work.  Then he would have
realized that the code was in fact correct, and would have avoided breaking it.

llvm-svn: 36173

llvm-svn: 35869

llvm-svn: 35292

confusion with external linkage types.

llvm-svn: 33663

1. New parameter attribute called 'inreg'. It has meaning "place this
parameter in registers, if possible". This is some generalization of
gcc's regparm(n) attribute. It's currently used only in X86-32 backend.
2. Completely rewritten CC handling/lowering code inside X86 backend.
Merged stdcall + c CCs and fastcall + fast CC.
3. Dropped CSRET CC. We cannot add struct return variant for each
target-specific CC (e.g. stdcall + csretcc and so on).
4. Instead of CSRET CC introduced 'sret' parameter attribute. Setting in
on first attribute has meaning 'This is hidden pointer to structure
return. Handle it gently'.
5. Fixed small bug in llvm-extract + add new feature to
FunctionExtraction pass, which relinks all internal-linkaged callees
from deleted function to external linkage. This will allow further
linking everything together.

NOTEs: 1. Documentation will be updated soon.
       2. llvm-upgrade should be improved to translate csret => sret.
          Before this, there will be some unexpected test fails.
llvm-svn: 33597

llvm-svn: 33441

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

* 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

- 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

type for distinguish JIT & non-JIT instead of "dirty" hacks :)

llvm-svn: 32745

llvm-svn: 32720

platform should be more or less workable. At least, sim is running fine
under lli :)

llvm-svn: 32711

llvm-svn: 32333

llvm-svn: 32048

llvm-svn: 32004

features autodetected.  This fixes PR1010 and Regression/CodeGen/X86/xmm-r64.ll
on non-x86-64 hosts.

llvm-svn: 31879

llvm-svn: 31572

llvm-svn: 30993

llvm-svn: 30985

llvm-svn: 30770

llvm-svn: 30764

llvm-svn: 30763

It appears the inline asm in GetCpuIDAndInfo() may clobbers some registers if it isn't inlined (at < -O3). Force it to be inlined.

llvm-svn: 30762

llvm-svn: 30722

llvm-svn: 30177

host, it should be affected by the target.  Allow the command line option to
override in either case.

llvm-svn: 30164

llvm-svn: 30146

llvm-svn: 28843

Patch contributed by Anton Korobeynikov!

llvm-svn: 28480

llvm-svn: 26273