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b5041b3085
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3050 Commits

Author SHA1 Message Date
Nate Begeman
b5041b3085 readme updates 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47051 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 07:06:12 +00:00
Evan Cheng
a4d16a1f0d commuteInstr() can now commute non-ssa machine instrs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47043 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 02:46:49 +00:00
Dan Gohman
fd29e0eb06 Convert SelectionDAG::ComputeMaskedBits to use APInt instead of uint64_t. 
Add an overload that supports the uint64_t interface for use by clients
that haven't been updated yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47039 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-13 00:35:47 +00:00
Dale Johannesen
3006c39e3a __DATA not __DATA__ is the right segment name on darwin. 
Spotted by Nick Kledzik.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47037 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 23:35:09 +00:00
Nate Begeman
cdd1eeca2c SSE4.1 64b integer insert/extract pattern support 
Move formats into the formats file


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47035 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 22:51:28 +00:00
Evan Cheng
9f143ce989 Only using x86-64 rip relative addressing in non-staic mode? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47019 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 19:20:46 +00:00
Evan Cheng
add251754c Update comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47002 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 07:59:55 +00:00
Evan Cheng
5ae45caf79 Unbreak various insert_vector_elt and extract_vector_elt tests in presence of SSE4. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47001 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-12 07:59:45 +00:00
Nate Begeman
14d12caf1d Enable SSE4 codegen and pattern matching. 
Add some notes to the README.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46949 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-11 04:19:36 +00:00
Nate Begeman
ab5d56c6b9 xmm0 variable blends 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46931 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 18:47:57 +00:00
Dan Gohman
6f0d024a53 Rename MRegisterInfo to TargetRegisterInfo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46930 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-10 18:45:23 +00:00
Nate Begeman
fea2be50b9 memopv16i8 had wrong alignment requirement, would have broken pabsb 
pabs{b,w,d} are not two address
fix extract-to-mem sse4 ops
add sse4 vector sign extend nodes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46915 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 23:46:37 +00:00
Nate Begeman
1426d52cab Skeleton of insert and extract matching, more to come 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46902 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-09 01:38:08 +00:00
Evan Cheng
5fd79d0560 It's not always safe to fold movsd into xorpd, etc. Check the alignment of the load address first to make sure it's 16 byte aligned. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46893 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 21:20:40 +00:00
Dale Johannesen
0c191872ab 64-bit (MMX) vectors do not need restrictive alignment. 
128-bit vectors need it only when SSE is on.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46890 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 19:48:20 +00:00
Dan Gohman
60783304f6 Avoid needlessly casting away const qualifiers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46877 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 03:29:40 +00:00
Evan Cheng
33663fc104 Added missing entries in X86 load / store folding tables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46866 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-08 00:12:56 +00:00
Dan Gohman
3069b87437 Follow Chris' suggestion; change the PseudoSourceValue accessors 
to return pointers instead of references, since this is always what
is needed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46857 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 18:41:25 +00:00
Dan Gohman
4fdad172de Add SourceValue information for outgoing argument stores on x86. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46854 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 16:28:05 +00:00
Evan Cheng
be3bf42331 Fix a x86-64 codegen deficiency. Allow gv + offset when using rip addressing mode. 
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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46850 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 08:53:49 +00:00
Evan Cheng
15246738f2 In some cases, e.g. ADD32ri, no transformation is made. Guide against it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46849 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-07 08:29:53 +00:00
Dan Gohman
69de1932b3 Re-apply the memory operand changes, with a fix for the static 
initializer problem, a minor tweak to the way the
DAGISelEmitter finds load/store nodes, and a renaming of the
new PseudoSourceValue objects.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46827 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-06 22:27:42 +00:00
Dale Johannesen
e672af15d6 Implement sseregparm. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46764 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-05 20:46:33 +00:00
Evan Cheng
4e3f5a4e9c Dwarf requires variable entries to be in the source order. Right now, since we are recording variable information at isel time this means parameters would appear in the reverse order. The short term fix is to issue recordVariable() at asm printing time instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46724 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 23:06:48 +00:00
Nate Begeman
204e84e138 The rest of the SSE4.1 intrinsic patterns that are obvious to me. Getting 
Evan's help with the rest.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46697 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 06:00:24 +00:00
Nate Begeman
2f6f1c02ca Some more SSE 4.1 intrinsic patterns. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46696 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-04 05:34:34 +00:00
Nate Begeman
63ec90a6a8 SSE 4.1 Intrinsics and detection 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46681 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-03 07:18:54 +00:00
Evan Cheng
4eecdeb3fa Get rid of the annoying blank lines before labels. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46667 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-02 08:39:46 +00:00
Nick Lewycky
916a9f071f Don't use uninitialized values. Fixes vec_align.ll on X86 Linux. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46666 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-02 08:29:58 +00:00
Evan Cheng
a844bdeab3 SDIsel processes llvm.dbg.declare by recording the variable debug information descriptor and its corresponding stack frame index in MachineModuleInfo. This only works if the local variable is "homed" in the stack frame. It does not work for byval parameter, etc. 
Added ISD::DECLARE node type to represent llvm.dbg.declare intrinsic. Now the intrinsic calls are lowered into a SDNode and lives on through out the codegen passes.
For now, since all the debugging information recording is done at isel time, when a ISD::DECLARE node is selected, it has the side effect of also recording the variable. This is a short term solution that should be fixed in time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46659 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-02 04:07:54 +00:00
Evan Cheng
b8033e821d Frame index can be negative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46655 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-02 00:17:00 +00:00
Evan Cheng
1b08bbca55 Remove the nasty LABEL hack with a much less evil one. Now llvm.dbg.func.start implies a stoppoint is set. SelectionDAGISel records a new source line but does not create a ISD::LABEL node for this special stoppoint. Asm printer will magically print this label. This ensures nothing is emitted before. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46635 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-02-01 09:10:45 +00:00
Evan Cheng
334dc1f58d Revert 46556 and 46585. Dan please fix the PseudoSourceValue problem and re-commit. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46623 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 21:00:00 +00:00
Evan Cheng
bb81d97feb Add an extra operand to LABEL nodes which distinguishes between debug, EH, or misc labels. This fixes the EH breakage. However I am not convinced this is *the* solution. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46609 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 09:59:15 +00:00
Evan Cheng
c67aa7cbd5 Add x86 specific getFrameIndexOffset(). This fixes local variable debugging info. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46598 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 04:06:00 +00:00
Dan Gohman
bbfb9c57c7 Avoid unnecessarily casting away const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46590 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 01:01:48 +00:00
Dan Gohman
1a0248690a Rename ISD::FLT_ROUNDS to ISD::FLT_ROUNDS_ to avoid conflicting 
with the real FLT_ROUNDS (defined in <float.h>).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46587 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 00:41:03 +00:00
Dan Gohman
c6c391dadd Create a new class, MemOperand, for describing memory references 
in the backend. Introduce a new SDNode type, MemOperandSDNode, for
holding a MemOperand in the SelectionDAG IR, and add a MemOperand
list to MachineInstr, and code to manage them. Remove the offset
field from SrcValueSDNode; uses of SrcValueSDNode that were using
it are all all using MemOperandSDNode now.

Also, begin updating some getLoad and getStore calls to use the
PseudoSourceValue objects.

Most of this was written by Florian Brander, some
reorganization and updating to TOT by me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46585 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-31 00:25:39 +00:00
Evan Cheng
965d1b4bba Treat the label for the first @llvm.dbg.stoppoint the same way as the dbg_func_start label. Make sure nothing else is inserted before them. 
Note this solution might be somewhat fragile since ISD::LABEL may be used for other
purposes. If that ends up to be an issue, we may need to introduce a different node
for debug labels.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46571 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 20:08:35 +00:00
Evan Cheng
ff9b373e8f Even though InsertAtEndOfBasicBlock is an ugly hack it still deserves a proper name. Rename it to EmitInstrWithCustomInserter since it does not necessarily insert 
instruction at the end.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46562 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 18:18:23 +00:00
Evan Cheng
d2c860cef1 Skip over the label which marks the beginning of the function before inserting prologue code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46546 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-30 03:57:33 +00:00
Evan Cheng
0d9e976ad2 Work in progress. This patch *fixes* x86-64 calls which are modelled as StructRet but really should be return in registers, e.g. _Complex long double, some 128-bit aggregates. This is a short term solution that is necessary only because llvm, for now, cannot model i128 nor call's with multiple results. 
Status: This only works for direct calls, and only the caller side is done. Disabled for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46527 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 19:34:22 +00:00
Dale Johannesen
ba2a0b960e Handle 'X' constraint in asm's better. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46485 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-29 02:21:21 +00:00
Chris Lattner
f6b935d8e6 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46413 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 07:31:41 +00:00
Chris Lattner
71d07a0dac Use fldz and fld1 for long double constants instead of a constant pool load. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46411 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-27 06:19:31 +00:00
Chris Lattner
4d53049c92 Add some notes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46405 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 20:12:07 +00:00
Chris Lattner
ba96fbc164 Remove some code for inferring alignment info from the x86 backend 
now that the dag combiner does it.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46404 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 20:07:42 +00:00
Bill Wendling
824a721560 If there's no instructions being emitted on X86 for a function, emit a 
nop. Emit the nop directly for PPC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46398 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-26 09:03:52 +00:00
Chris Lattner
6cf73267c6 optimize fxor like for 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46345 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-25 06:14:17 +00:00
Chris Lattner
af723b9ae4 Add target-specific dag combines for FAND(x,0) and FOR(x,0). This allows 
us to compile:

double test(double X) {
  return copysign(0.0, X);
}

into:

_test:
	andpd	LCPI1_0(%rip), %xmm0
	ret

instead of:
_test:
	pxor	%xmm1, %xmm1
	andpd	LCPI1_0(%rip), %xmm1
	movapd	%xmm0, %xmm2
	andpd	LCPI1_1(%rip), %xmm2
	movapd	%xmm1, %xmm0
	orpd	%xmm2, %xmm0
	ret



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46344 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-01-25 05:46:26 +00:00