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93799292c1
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883 Commits

Author SHA1 Message Date
Chris Lattner
93799292c1 There is no reason to align the stack pointer if there are no callees of this function! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11449 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 20:10:59 +00:00
Chris Lattner
cc42d2c3cc A target that doesn't support these intrinsics will still meet spec (the 
intrinsic will always produce zero), but it will behave unexpectedly, so
warn like GCC does.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11444 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 04:52:06 +00:00
Chris Lattner
cf89908381 Add llvm.memset/frameaddress/returnaddress intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11431 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 02:47:17 +00:00
Alkis Evlogimenos
f81af21caf Use newly added next() and prior() utility functions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11430 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 01:18:34 +00:00
Alkis Evlogimenos
6ab5c15962 Use std::numeric_limits<float>::infinity() instead of 
std::numeric_limits<float>::max() for weighting preallocated
intervals.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11427 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 00:44:07 +00:00
Alkis Evlogimenos
be766c7246 Remove getAllocatedRegNum(). Use getReg() instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11393 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 21:01:20 +00:00
Alkis Evlogimenos
4de473bc59 Use getNumVirtualRegs(). 
Whitespace cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11389 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 18:20:47 +00:00
Brian Gaeke
90421cd8f9 Refactor MachineFunction::print() into MachineBasicBlock::print(). 
Add MachineBasicBlock::dump().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11364 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 04:39:55 +00:00
Brian Gaeke
21326fc2ad Add head-of-file comments and Doxygen comments. Tighten up a lot of whitespace. 
Rename SetMachineOperandConst's formal parameters to match other methods here.
Mark some methods as being used only by the SPARC back-end.
Fix a missing-paren bug in OutputValue().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11363 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 04:39:32 +00:00
Alkis Evlogimenos
ab8672c8bb Add parent pointer to MachineInstr that points to owning 
MachineBasicBlock. Also change opcode to a short and numImplicitRefs
to an unsigned char so that overall MachineInstr's size stays the
same.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11357 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 18:49:07 +00:00
Chris Lattner
2751e76a70 Add support for the llvm.memmove intrinsic 
Patch graciously contributed by Reid Spencer!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11355 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 18:11:20 +00:00
Chris Lattner
5fe51cc2c4 Implement the llvm.memcpy intrinsic 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11349 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 17:01:09 +00:00
Chris Lattner
2a90ba6017 Rename the opCode instance variable to Opcode 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11348 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 16:09:53 +00:00
Chris Lattner
3081db8d01 This field is never read 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11346 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 16:04:49 +00:00
Alkis Evlogimenos
c0b9dc5be7 Change MachineBasicBlock's vector of MachineInstr pointers into an 
ilist of MachineInstr objects. This allows constant time removal and
insertion of MachineInstr instances from anywhere in each
MachineBasicBlock. It also allows for constant time splicing of
MachineInstrs into or out of MachineBasicBlocks.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11340 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 02:27:10 +00:00
Brian Gaeke
918cdd420b getOpCode() --> getOpcode(). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11339 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 01:34:05 +00:00
Chris Lattner
61b08f193a Add #include 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11285 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-10 21:18:55 +00:00
Chris Lattner
1cbe4d0ad0 Do not use MachineOperand::isVirtualRegister either! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11283 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-10 21:12:22 +00:00
Chris Lattner
3d878d80d6 Eliminate users of MachineOperand::isPhysicalRegister 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11278 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-10 20:41:10 +00:00
Brian Gaeke
f738db0818 Move InstrSchedule's iterator begin/end methods inline. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11239 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 18:42:46 +00:00
Brian Gaeke
0dc5753f2b Make SchedGraph::dump() use SchedGraphNodeCommon's const_iterator 
instead of randomly groping about inside its outEdges array.
Make SchedGraph::addDummyEdges() use getNumOutEdges() instead of
outEdges.size().
Get rid of ifdefed-out code in SchedGraph::buildGraph().


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11238 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 18:42:05 +00:00
Chris Lattner
ecea5635f8 Another nice speedup for the register allocator. This time, we replace 
the Virt2PhysRegMap std::map with an std::vector.  This speeds up the
register allocator another (almost) 40%, from .72->.45s in a release build
of LLC on 253.perlbmk.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11219 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 02:12:04 +00:00
Chris Lattner
499487742e Ugh, perform an optimization that GCC should be able to do itself. This 
speeds up livevar from .48/.32s -> .45/.31s in LLC on perlbmk


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11217 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 01:43:23 +00:00
Chris Lattner
96aef89338 Only do stuff for the REAL number of physical registers we have, not 1024. 
This speeds up live variables a lot, from .60/.39s -> .47/.26s in LLC, for
the first/second pass respectively.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11216 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 01:35:21 +00:00
Chris Lattner
64667b6418 Change the PhysRegsUsed map into a dense array. Seeing that this is a mapping 
from physical registers, and they are always dense, it makes sense to not have
a ton of RBtree overhead.  This change speeds up regalloclocal about ~30% on
253.perlbmk, from .35s -> .27s in the JIT (in LLC, it goes from .74 -> .55).

Now live variable analysis is the slowest codegen pass.  Of course it doesn't
help that we have to run it twice, because regalloclocal doesn't update it,
but even if it did it would be the slowest pass (now it's just the 2x slowest
pass :(


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11215 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-09 01:26:13 +00:00
Alkis Evlogimenos
f5eaf16b94 Increase code clarity. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11151 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-06 18:08:18 +00:00
Alkis Evlogimenos
54d23c754a Eliminate uneeded lookups by passing a Virt2PhysMap::iterator instead 
of the virtual register to certain functions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11143 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-06 03:15:40 +00:00
Alkis Evlogimenos
0b8cb2bc47 Change live interval representation. Machine instructions now have two 
slots each. As a concequence they get numbered as 0, 2, 4 and so
on. The first slot is used for operand uses and the second for
defs. Here's an example:

0: A = ...
2: B = ...
4: C = A + B ;; last use of A

The live intervals should look like:

A = [1, 5)
B = [3, x)
C = [5, y)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11141 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-05 22:55:25 +00:00
Alkis Evlogimenos
ad48cd6327 We don't need to scan the blocks that we are live-in on every 
access. Rather we only have to do it on the creation of the interval.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11135 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-05 20:45:40 +00:00
Tanya Lattner
5a5960978a Added missing include. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11129 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-05 05:04:39 +00:00
Alkis Evlogimenos
14be64018f Modify the two address instruction pass to remove the duplicate 
operand of the instruction and thus simplify the register allocation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11124 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-04 22:17:40 +00:00
Alkis Evlogimenos
4e7854407c When an instruction like: A += B had both A and B virtual registers 
spilled, A was loaded from its stack location twice. This fixes the bug.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11093 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-03 01:13:07 +00:00
Alkis Evlogimenos
9fe7602862 Revert changes. Will implement this using a different set of primitives 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11091 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 23:08:58 +00:00
Alkis Evlogimenos
cc6a1290fc Fix debugging output. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11088 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 22:00:32 +00:00
Alkis Evlogimenos
eea81bafd6 Correctly update def/use information for modified machine operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11087 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 21:56:40 +00:00
Alkis Evlogimenos
b606eaca1b Should be more careful. The previously applied change made all counts 
outside of loops = 0.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11085 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 20:29:57 +00:00
Alkis Evlogimenos
22b7e44bb0 Create an object for tracking physical register usage. This will look 
much better when I get rid of the reserved registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11066 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-02 07:30:36 +00:00
Alkis Evlogimenos
04667297af Change weight array into a vector and make it as big as the number of 
registers (not as the max number of registers).

Change toSpill from a std::set into a std::vector<bool>.

Use the reverse iterator adapter to do a reverse scan of allocatable
registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11061 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 20:13:26 +00:00
Alkis Evlogimenos
f440cc19c9 Use std::map::count() instead of std::map::find() != std::map::end() 
where appropriate.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11060 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 18:39:53 +00:00
Alkis Evlogimenos
b180e3e92b Change string for joined intervals. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11057 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 16:13:05 +00:00
Alkis Evlogimenos
b0b0ebaac0 Change xor to ^. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11054 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 08:19:25 +00:00
Chris Lattner
d4baf0f74c Fix a bug in a recent checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11050 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 05:25:07 +00:00
Alkis Evlogimenos
676cf8cb1d Missed one silly assert :-) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11048 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 02:21:31 +00:00
Alkis Evlogimenos
01e74a2aab Simplify joinIntervals() code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11047 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 02:18:31 +00:00
Alkis Evlogimenos
4f67b86648 Use MRegisterInfo::isPhysicalRegister and 
MRegisterInfo::isVirtualRegister.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11045 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-01 01:27:01 +00:00
Alkis Evlogimenos
52220f61bb Apply final part of Chris' patch. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11040 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-31 23:48:47 +00:00
Alkis Evlogimenos
02ba13c989 Be a little smarter on the way we handle physical register defs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11038 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-31 23:13:30 +00:00
Chris Lattner
ef09c63e7b Finegrainify namespacification, use new MRegisterInfo::isVirtualRegister 
method


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11037 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-31 21:27:19 +00:00
Chris Lattner
6b50767905 Fix, correctly this time, the computation of the return value 
Fix a spello
Tighten up the assertion checking

No functionality changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11036 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-31 21:21:43 +00:00
Chris Lattner
163c1e7a69 * Fix incorrect computation of the runOnMachineFunction return value 
* Turn a bunch of instance variables into automatic variables


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11035 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-01-31 21:14:04 +00:00