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2326 Commits

Author SHA1 Message Date
Chris Lattner
e23afcfd6d Create SUnits directly from the SelectionDAG. 
llvm-svn: 26683
 2006-03-10 07:13:32 +00:00
Chris Lattner
ed528a5652 Push PrepareNodeInfo/IdentifyGroups down the inheritance hierarchy 
llvm-svn: 26682
 2006-03-10 06:34:51 +00:00
Chris Lattner
920325db0a Teach the latency scheduler some new tricks. In particular, to break ties, 
keep track of a sense of "mobility", i.e. how many other nodes scheduling one
node will free up.  For something like this:

float testadd(float *X, float *Y, float *Z, float *W, float *V) {
  return (*X+*Y)*(*Z+*W)+*V;
}

For example, this makes us schedule *X then *Y, not *X then *Z.  The former
allows us to issue the add, the later only lets us issue other loads.

This turns the above code from this:

_testadd:
        lfs f0, 0(r3)
        lfs f1, 0(r6)
        lfs f2, 0(r4)
        lfs f3, 0(r5)
        fadds f0, f0, f2
        fadds f1, f3, f1
        lfs f2, 0(r7)
        fmadds f1, f0, f1, f2
        blr

into this:

_testadd:
        lfs f0, 0(r6)
        lfs f1, 0(r5)
        fadds f0, f1, f0
        lfs f1, 0(r4)
        lfs f2, 0(r3)
        fadds f1, f2, f1
        lfs f2, 0(r7)
        fmadds f1, f1, f0, f2
        blr

llvm-svn: 26680
 2006-03-10 05:51:05 +00:00
Chris Lattner
1bb3ae8dae add an aggregate method for reinserting scheduled nodes, add a callback for 
priority impls that want to be notified when a node is scheduled

llvm-svn: 26678
 2006-03-10 04:32:49 +00:00
Jeff Cohen
5002cf68b4 Fix VC++ build breakage. 
llvm-svn: 26676
 2006-03-10 03:57:45 +00:00
Chris Lattner
dc7268f6a3 remove dbg_declare, it's not used yet. 
llvm-svn: 26659
 2006-03-09 20:02:42 +00:00
Chris Lattner
d00d6b4f23 back out my previous hack 
llvm-svn: 26650
 2006-03-09 17:48:46 +00:00
Chris Lattner
4fe39d8f9e remove temporary option 
llvm-svn: 26646
 2006-03-09 17:31:22 +00:00
Chris Lattner
f6937476d0 temporary hack to get the build working again, apparently a header 
commit was forgotten

llvm-svn: 26642
 2006-03-09 17:11:08 +00:00
Jim Laskey
7fcf238500 Move bit field endianness to backend. 
llvm-svn: 26639
 2006-03-09 13:28:47 +00:00
Chris Lattner
f35a70d050 yes yes, enabled debug output is bad 
llvm-svn: 26637
 2006-03-09 07:39:25 +00:00
Chris Lattner
0020b50bac switch the t-d scheduler to use a really dumb and trivial critical path 
latency priority function.

llvm-svn: 26636
 2006-03-09 07:38:27 +00:00
Chris Lattner
074a604a1b Pull latency information for target instructions out of the latency tables. :) 
Only enable this with -use-sched-latencies, I'll enable it by default with a
clean nightly tester run tonight.

PPC is the only target that provides latency info currently.

llvm-svn: 26634
 2006-03-09 07:15:18 +00:00
Chris Lattner
34bfd7da1f don't copy all itinerary data 
llvm-svn: 26633
 2006-03-09 07:13:00 +00:00
Chris Lattner
b1f716a6d1 PriorityQueue is an instance var, use it. 
llvm-svn: 26632
 2006-03-09 06:48:37 +00:00
Chris Lattner
1d9c1edaa8 add some comments 
llvm-svn: 26631
 2006-03-09 06:37:29 +00:00
Chris Lattner
2dd7bcc95b Refactor the priority mechanism one step further: now that it is a separate 
class, sever its implementation from the interface.  Now we can provide new
implementations of the same interface (priority computation) without touching
the scheduler itself.

llvm-svn: 26630
 2006-03-09 06:35:14 +00:00
Jim Laskey
a1ad999bba Get rid of the multiple copies of getStringValue. Now a Constant:: method. 
llvm-svn: 26616
 2006-03-08 18:11:07 +00:00
Chris Lattner
133ec8c3f0 Split the priority function computation and priority queue management out 
of the ScheduleDAGList class into a new SchedulingPriorityQueue class.

llvm-svn: 26613
 2006-03-08 05:18:27 +00:00
Chris Lattner
46a80382ce switch from an explicitly managed list of SUnits to a simple vector of sunits 
llvm-svn: 26612
 2006-03-08 04:54:34 +00:00
Chris Lattner
427dbaccca Shrinkify some fields, fit to 80 columns 
llvm-svn: 26611
 2006-03-08 04:41:06 +00:00
Chris Lattner
c2fede6ffb revert the previous patch, didn't mean to check it in yet 
llvm-svn: 26610
 2006-03-08 04:39:05 +00:00
Chris Lattner
7965026ed9 remove "Slot", it is dead 
llvm-svn: 26609
 2006-03-08 04:37:58 +00:00
Chris Lattner
3f23d22d3f Change the interface for getting a target HazardRecognizer to be more clean. 
llvm-svn: 26608
 2006-03-08 04:25:59 +00:00
Jim Laskey
aae3375a2b libstdc++-v3 was failing to build. Needed to handle composite types with empty 
members (running into a zero initializer.)

llvm-svn: 26607
 2006-03-08 02:07:02 +00:00
Jim Laskey
91d5ce2531 Use "llvm.metadata" section for debug globals. Filter out these globals in the 
asm printer.

llvm-svn: 26599
 2006-03-07 22:00:35 +00:00
Jim Laskey
eec3faecde Switch to using a numeric id for anchors. 
llvm-svn: 26598
 2006-03-07 20:53:47 +00:00
Jim Laskey
da7873525e Bitfield support. 
llvm-svn: 26593
 2006-03-07 15:51:33 +00:00
Chris Lattner
ced780efee Fix some formatting, when looking for hazards, prefer target nodes over 
things like copyfromreg.

llvm-svn: 26586
 2006-03-07 05:40:43 +00:00
Chris Lattner
86375c060a update file comment 
llvm-svn: 26573
 2006-03-06 17:58:04 +00:00
Evan Cheng
2fad0ea044 Remove some code that doesn't make sense 
llvm-svn: 26572
 2006-03-06 07:31:44 +00:00
Evan Cheng
8fd9503fbd Remove SUnit::Priority1: it is re-calculated on demand as number of live 
range to be generated.

llvm-svn: 26570
 2006-03-06 06:08:54 +00:00
Chris Lattner
c6d1fbab70 Hoist the HazardRecognizer out of the ScheduleDAGList.cpp file to where 
targets can implement them.  Make the top-down scheduler non-g5-specific.

Remove the old testing hazard recognizer.

llvm-svn: 26569
 2006-03-06 00:22:00 +00:00
Chris Lattner
ca7ed30ee6 Comment fixes 
llvm-svn: 26567
 2006-03-05 23:59:20 +00:00
Chris Lattner
101ce8f304 Don't depend on the C99 copysign function, implement it ourselves. 
llvm-svn: 26566
 2006-03-05 23:57:58 +00:00
Chris Lattner
5c28fdcae8 When a hazard recognizer needs noops to be inserted, do so. This represents 
noops as null pointers in the instruction sequence.

llvm-svn: 26564
 2006-03-05 23:51:47 +00:00
Chris Lattner
0ee7522721 Implement G5HazardRecognizer as a trivial thing that wants 5 cycles between 
copyfromreg nodes.  Clearly useful!

llvm-svn: 26559
 2006-03-05 23:13:56 +00:00
Chris Lattner
ccda7ffffd Add basic hazard recognizer support. noop insertion isn't complete yet though. 
llvm-svn: 26558
 2006-03-05 22:45:01 +00:00
Jeff Cohen
578bf37e22 Fix VC++ compilation error. 
llvm-svn: 26554
 2006-03-05 21:43:37 +00:00
Chris Lattner
ef4bef419b Split the list scheduler into top-down and bottom-up pieces. The priority 
function of the top-down scheduler are completely bogus currently, and
having (future) PPC specific in this file is also wrong, but this is a
small incremental step.

llvm-svn: 26552
 2006-03-05 21:10:33 +00:00
Chris Lattner
49ccda9563 Move the available queue to being inside the ListSchedule method, since it 
bounds its lifetime.

llvm-svn: 26550
 2006-03-05 20:21:55 +00:00
Chris Lattner
f2bed5f46e Reinstate this now that the offending opposite xform has been removed. 
llvm-svn: 26548
 2006-03-05 19:53:55 +00:00
Chris Lattner
93ad7177b4 print arbitrary constant pool entries 
llvm-svn: 26545
 2006-03-05 09:38:03 +00:00
Evan Cheng
e0a6cf78f8 Back out fold (shl (add x, c1), c2) -> (add (shl x, c2), c1<<c2) for now. 
It's causing an infinite loop compiling ldecod on x86 / Darwin.

llvm-svn: 26544
 2006-03-05 07:30:16 +00:00
Chris Lattner
827e3f62b0 Add some simple copysign folds 
llvm-svn: 26543
 2006-03-05 05:30:57 +00:00
Chris Lattner
4b4b3e6cbb Codegen copysign[f] into a FCOPYSIGN node 
llvm-svn: 26542
 2006-03-05 05:09:38 +00:00
Chris Lattner
cd57ff4fb6 fold (mul (add x, c1), c2) -> (add (mul x, c2), c1*c2) 
fold (shl (add x, c1), c2) -> (add (shl x, c2), c1<<c2)

This allows us to compile CodeGen/PowerPC/addi-reassoc.ll into:

_test1:
        slwi r2, r4, 4
        add r2, r2, r3
        lwz r3, 36(r2)
        blr
_test2:
        mulli r2, r4, 5
        add r2, r2, r3
        lbz r2, 11(r2)
        extsb r3, r2
        blr

instead of:

_test1:
        addi r2, r4, 2
        slwi r2, r2, 4
        add r2, r3, r2
        lwz r3, 4(r2)
        blr
_test2:
        addi r2, r4, 2
        mulli r2, r2, 5
        add r2, r3, r2
        lbz r2, 1(r2)
        extsb r3, r2
        blr

llvm-svn: 26535
 2006-03-04 23:33:26 +00:00
Jim Laskey
dc6f528739 Added support for dwarf block data entries. 
llvm-svn: 26509
 2006-03-03 21:00:14 +00:00
Jim Laskey
f915b6b08b Adding basic structure support. 
llvm-svn: 26505
 2006-03-03 15:06:57 +00:00
Evan Cheng
4afe769361 Add more vector NodeTypes: VSDIV, VUDIV, VAND, VOR, and VXOR. 
llvm-svn: 26504
 2006-03-03 07:01:07 +00:00