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8251 Commits

Author SHA1 Message Date
Chad Rosier
42726835e3 Fix a regression from r147481. This combine should only happen if there is a 
single use.
rdar://11360370


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156316 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-07 18:47:44 +00:00
Manman Ren
ed57984483 X86: optimization for -(x != 0) 
This patch will optimize -(x != 0) on X86
FROM 
cmpl	$0x01,%edi
sbbl	%eax,%eax
notl	%eax
TO
negl %edi
sbbl %eax %eax

In order to generate negl, I added patterns in Target/X86/X86InstrCompiler.td:
def : Pat<(X86sub_flag 0, GR32:$src), (NEG32r GR32:$src)>;

rdar: 10961709


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156312 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-07 18:06:23 +00:00
Craig Topper
ef2b8bda02 Fix some issues in the f16c instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156287 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-07 06:00:15 +00:00
Craig Topper
5f9cccc509 Add SSE4A MOVNTSS/MOVNTSD instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156281 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-07 05:36:19 +00:00
Craig Topper
d978c54e60 Use MVT instead of EVT as the argument to all the shuffle decode functions. Simplify some of the decode functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156268 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-06 19:46:21 +00:00
Craig Topper
bdcbcb3ae7 Add VPERMQ/VPERMPD to the list of target specific shuffles that can be looked through for DAG combine purposes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156266 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-06 18:54:26 +00:00
Craig Topper
156f5bb56e Add shuffle decode support for VPERMQ/VPERMPD. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156265 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-06 18:44:02 +00:00
Jim Grosbach
e5f31ad55e Nuke a few dead remnants of the CBE. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156241 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-05 17:45:12 +00:00
Benjamin Kramer
aaf723dd2b Add a new target hook "predictableSelectIsExpensive". 
This will be used to determine whether it's profitable to turn a select into a
branch when the branch is likely to be predicted.

Currently enabled for everything but Atom on X86 and Cortex-A9 devices on ARM.

I'm not entirely happy with the name of this flag, suggestions welcome ;)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156233 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-05 12:49:14 +00:00
Preston Gurd
3d142e58ef Adds Intel Atom scheduling latencies to X86InstrSystem.td. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156194 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-04 19:26:37 +00:00
Craig Topper
31a207a3b7 Fix some loops to match coding standards. No functional change intended. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156159 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-04 06:39:13 +00:00
Craig Topper
6643d9c180 Fix up some spacing. No functional change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156158 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-04 06:18:33 +00:00
Craig Topper
5da8a80377 Simplify broadcast lowering code. No functional change intended. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156157 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-04 05:49:51 +00:00
Craig Topper
f3640d7ec1 Allow v16i16 and v32i8 shuffles to be rewritten as narrower shuffles. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156156 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-04 04:44:49 +00:00
Craig Topper
11ac1f81a8 Simplify shuffle narrowing code a bit. No functional change intended. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156154 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-04 04:08:44 +00:00
Jakob Stoklund Olesen
338607ae0d Remove the SubRegClasses field from RegisterClass descriptions. 
This information in now computed by TableGen.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156152 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-04 03:30:34 +00:00
Craig Topper
b607264550 Use 'unsigned' instead of 'int' in a few places dealing with counts of vector elements. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156060 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-03 07:26:59 +00:00
Craig Topper
6b28d356c5 Fix 256-bit vpshuflw and vpshufhw immediate encoding to handle undefs in the lower half correctly. Missed in r155982. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156059 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-03 07:12:59 +00:00
Preston Gurd
c0f0a93936 For Intel Atom, use ILP scheduling always, instead of ILP for 64 bit 
and Hybrid for 32 bit, since benchmarks show ILP scheduling is better
most of the time.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156028 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-02 22:02:02 +00:00
Preston Gurd
79bbe855cd Change the Intel Atom detection code to recognize 
Lincroft and Medfield.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156025 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-02 21:38:46 +00:00
Preston Gurd
95f0cf0438 This patch continues the work of adding instruction latencies for X86 Atom, 
by providing the latencies for the instructions in X86InstrFPStack.td.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155996 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-02 16:03:35 +00:00
Manman Ren
e2849851b2 Revert r155853 
The commit is intended to fix rdar://10961709.
But it is the root cause of PR12720.
Revert it for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155992 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-02 15:24:32 +00:00
Craig Topper
a9a568a79d Add support for selecting AVX2 vpshuflw and vpshufhw. Add decoding support for AsmPrinter. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155982 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-02 08:03:44 +00:00
Jakub Staszak
dca40aa911 Remove unneeded break. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155959 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 23:08:16 +00:00
Jakub Staszak
bf14860572 Remove trailing spaces. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155956 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 23:04:38 +00:00
Preston Gurd
66413b61f0 This patch marks the X86 floating point stack registers ST0-ST7 as reserved 
in order to avoid assertion failures in the register scavenger. The assertion
failures were “Bad machine code: Using an undefined physical register” and
“Bad machine code: MBB exits via unconditional fall-through but its successor
differs from its CFG successor!”.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155930 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 19:50:22 +00:00
Manman Ren
769ea2f93f X86: optimization for max-like struct 
This patch will optimize the following cases on X86
(a > b) ? (a-b) : 0
(a >= b) ? (a-b) : 0
(b < a) ? (a-b) : 0
(b <= a) ? (a-b) : 0

FROM
movl    %edi, %ecx
subl    %esi, %ecx
cmpl    %edi, %esi
movl    $0, %eax
cmovll  %ecx, %eax
TO
xorl    %eax, %eax
subl    %esi, %edi
cmovll  %eax, %edi
movl    %edi, %eax

rdar: 10734411


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155919 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 17:16:15 +00:00
Alexey Samsonov
d07d06ceef X86: Use StackRegister instead of FrameRegister in getFrameIndexReference (to generate debug info for local variables) if stack needs realignment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155917 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 15:16:06 +00:00
Bill Wendling
7c4ce30ea6 Change the PassManager from a reference to a pointer. 
The TargetPassManager's default constructor wants to initialize the PassManager
to 'null'. But it's illegal to bind a null reference to a null l-value. Make the
ivar a pointer instead.
PR12468


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155902 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 08:27:43 +00:00
Craig Topper
c80e7d2ea4 Allow BMI, AES, F16C, POPCNT, FMA3, and CLMUL to be detected on AMD processors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155899 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 07:10:32 +00:00
Craig Topper
e499cdf10c Make XOP and FMA4 require SSE4A to match GCC behavior. Use this to simplify Bulldozer feature list. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155897 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 06:54:48 +00:00
Craig Topper
ff72e74d34 Attempt to handle MRMInitReg in emitVEXOpcodePrefix. Hopefully fixes PR12711. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155896 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 06:34:01 +00:00
Craig Topper
e106d2e2ac Make XOP imply AVX as its needed to legalize the registers types. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155891 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 05:41:41 +00:00
Craig Topper
c49c6e154a Remove HasSSE2 from AES and CLMUL predicates. It's now implied by the HasAES and HasCLMUL predicates. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155890 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 05:35:02 +00:00
Craig Topper
da1a984159 Make CLMUL and AES imply SSE2 since its needed to legalize the type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155888 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 05:28:32 +00:00
Craig Topper
ed39ac5026 Enable AVX and FMA4 for AMD Bulldozer processors. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155885 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-05-01 05:18:13 +00:00
Manman Ren
16a76519a5 X86: optimization for -(x != 0) 
This patch will optimize -(x != 0) on X86
FROM 
cmpl	$0x01,%edi
sbbl	%eax,%eax
notl	%eax
TO
negl %edi
sbbl %eax %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155853 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-30 22:51:25 +00:00
Chad Rosier
238ae31aa3 Tidy up. No functional change intended. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155832 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-30 17:47:15 +00:00
Derek Schuff
ddc693bd22 Fix fastcc structure return with fast-isel on x86-32 
On x86-32, structure return via sret lets the callee pop the hidden
pointer argument off the stack, which the caller then re-pushes.
However if the calling convention is fastcc, then a register is used
instead, and the caller should not adjust the stack. This is
implemented with a check of IsTailCallConvention
X86TargetLowering::LowerCall but is now checked properly in
X86FastISel::DoSelectCall.

(this time, actually commit what was reviewed!)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155825 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-30 16:57:15 +00:00
Craig Topper
7d1e3dcf71 No need to normalize index before calling Extract128BitVector 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155811 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-30 05:17:10 +00:00
Pete Cooper
6942f706aa Copied all the VEX prefix encoding code from X86MCCodeEmitter to the x86 JIT emitter. Needs some major refactoring as these two code emitters are almost identical 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155810 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-30 03:56:44 +00:00
Jakub Staszak
6610b1db55 Remove unneeded casts. No functionality change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155800 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-29 20:52:53 +00:00
Craig Topper
d77d2feb7a Simplify code a bit. No functional change intended. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155798 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-29 20:22:05 +00:00
Derek Schuff
f3db6b855e Revert r155745 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155746 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 23:37:41 +00:00
Derek Schuff
9dc28b0722 Fix fastcc structure return with fast-isel on x86-32 
On x86-32, structure return via sret lets the callee pop the hidden
pointer argument off the stack, which the caller then re-pushes.
However if the calling convention is fastcc, then a register is used
instead, and the caller should not adjust the stack. This is
implemented with a check of IsTailCallConvention
X86TargetLowering::LowerCall but is now checked properly in
X86FastISel::DoSelectCall.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155745 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 23:27:17 +00:00
Craig Topper
66ddd153f6 Use 'unsigned' instead of 'int' in several places when retrieving number of vector elements. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155742 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 22:54:43 +00:00
Chad Rosier
a73b6fc511 Add x86-specific DAG combine to simplify: 
x == -y --> x+y == 0
 x != -y --> x+y != 0

On x86, the generated code goes from
   negl    %esi
   cmpl    %esi, %edi
   je    .LBB0_2
to
   addl    %esi, %edi
   je    .L4

This case is correctly handled for ARM with "cmn".

Patch by Manman Ren.
rdar://11245199
PR12545


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155739 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 22:33:25 +00:00
Craig Topper
b4a8aef96d Tidy up spacing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155733 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 21:05:09 +00:00
Benjamin Kramer
17c836c4b5 X86: Don't emit conditional floating point moves on when targeting pre-pentiumpro architectures. 
* Model FPSW (the FPU status word) as a register.
* Add ISel patterns for the FUCOM*, FNSTSW and SAHF instructions.
* During Legalize/Lowering, build a node sequence to transfer the comparison
result from FPSW into EFLAGS. If you're wondering about the right-shift: That's
an implicit sub-register extraction (%ax -> %ah) which is handled later on by
the instruction selector.

Fixes PR6679. Patch by Christoph Erhardt!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155704 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-27 12:07:43 +00:00
Preston Gurd
c573b1f7ae Trivial change to set UseLeaForSP flag in addition to toggling 
the FeatureLeaForSP feature bit when llvm auto detects Intel Atom.

Patch by Andy Zhang



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@155655 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-04-26 19:52:27 +00:00