Alkis Evlogimenos
9fe7602862
Revert changes. Will implement this using a different set of primitives
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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.
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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.
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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
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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
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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
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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()
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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.
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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 ^.
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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
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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 :-)
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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.
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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
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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.
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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.
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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
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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
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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
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* 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
Chris Lattner
bd91c1c376
Remove unneeded #includes
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Move Passes.h (which defines the interface to this file) to the top.
Move statistics to the top of the file.
Add a comment
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11034 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31 21:07:15 +00:00
Alkis Evlogimenos
08cec00588
Merge safe parts from last night's buggy commit. These do not break
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any test cases :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11032 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31 19:59:32 +00:00
Alkis Evlogimenos
97017de187
Optimize liveAt() and overlaps(). We now use a binary search instead
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of a linear search to find the first range for comparisons. This cuts
down the linear scan register allocator running time by a factor of 3
in 254.perlbmk and by a factor of 2.2 in 176.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11030 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31 16:54:54 +00:00
Alkis Evlogimenos
4d46e1e521
Revert last night's changes as they broke some tests. Will remerge parts of the patch.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11029 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31 14:37:41 +00:00
Alkis Evlogimenos
32bdd4ea65
Several performance enhancements and cleanups from Chris.
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Simplification of LiveIntervals::Interval::overlaps() and addition of
examples to overlaps() and liveAt() to make them clearer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11028 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-31 04:56:07 +00:00
Chris Lattner
49a5aaacef
Finegrainify namespacification
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Implement LiveVariables::getIndexMachineBasicBlock
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11018 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-30 22:08:53 +00:00
Brian Gaeke
09caa3751f
Give clients of MachineFunctionPrinter the ability to specify a banner and
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choose an ostream.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11016 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-30 21:53:46 +00:00
Alkis Evlogimenos
79b0c3f0b9
Fix failing test cases with joined live intervals. It turns out that
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when joining we need to check if we overlap with the second interval
or any of its aliases.
Also make joining intervals the default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10973 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-23 13:37:51 +00:00
Alkis Evlogimenos
e88280a422
Add option to join live intervals. Two intervals are joined if there
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is a move between two registers, at least one of the registers is
virtual and the two live intervals do not overlap.
This results in about 40% reduction in intervals, 30% decrease in the
register allocators running time and a 20% increase in peephole
optimizations (mainly move eliminations).
The option can be enabled by passing -join-liveintervals where
appropriate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10965 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-22 23:08:45 +00:00
Alkis Evlogimenos
84dc5fb6ba
Remove unneeded check. An interval in active, by definition overlaps
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with the current one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10959 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-22 20:07:18 +00:00
Alkis Evlogimenos
ce50115006
Improve debugging output. Remove unneeded virtReg->0 mapping when
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virtReg lives on the stack. Now a virtual register has an entry in the
virtual->physical map or the virtual->stack slot map but never in
both.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10958 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-22 19:24:43 +00:00
Alkis Evlogimenos
1075ecd32f
Revert previous change. The code was correct...
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10957 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-22 19:17:52 +00:00
Alkis Evlogimenos
e1a210777d
Fix incorrect negatives in LiveIntervals::Interval::liveAt().
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10956 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-22 18:33:50 +00:00
Tanya Lattner
06723077ed
Moved iterators around.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10926 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-20 17:51:13 +00:00
Tanya Lattner
a105c802b2
Moved iterators to common file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10925 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-20 17:49:42 +00:00
Alkis Evlogimenos
a12c7bb06f
Handle printing of intervals that are not assign to any physical
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register yet (2nd try).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10896 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-16 20:33:13 +00:00
Alkis Evlogimenos
a6d8c3f845
Handle printing of intervals that are not assign to any physical
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register yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10895 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-16 20:29:42 +00:00
Alkis Evlogimenos
3b02cbe752
Fold open interval ends handling into
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LiveIntervals::Interval::expiredAt() and simplify regalloc code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10894 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-16 20:17:05 +00:00
Alkis Evlogimenos
1893a05b28
Add asserts to previous change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10893 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-16 16:23:23 +00:00
Alkis Evlogimenos
f5f1689ed2
Use a list instead of a vector to store intervals. This will be needed
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when we join intervals and one of the two will need to be removed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10892 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-16 16:06:59 +00:00
Chris Lattner
f907bac068
Hrm, apparently I missed lowering this intrinsic. :(
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10858 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-14 20:41:29 +00:00
Alkis Evlogimenos
d6e40a6cbc
Properly update #intervals statistic.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10847 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-14 10:44:29 +00:00
Alkis Evlogimenos
9739736b94
Fix bug in LiveIntervals::Interval::overlaps and
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LiveIntervals::Interval::liveAt. Both were considering the live ranges
closed in the end, when they are actually open.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10835 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-14 00:20:09 +00:00
Alkis Evlogimenos
5ab20273a4
Improve debugging output.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10834 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-14 00:09:36 +00:00
Alkis Evlogimenos
af25473d5e
Fix miscomputation of live intervals. The catch is that registers can
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be dead at the defining instruction but can only be killed in
subsequent ones.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10833 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13 22:26:14 +00:00
Alkis Evlogimenos
1a119e2410
Remove allocatable registers vector. It is already provided by
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LiveVariables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10830 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13 22:10:43 +00:00
Alkis Evlogimenos
a3a6524965
Cleanup debugging output.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10824 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13 21:53:20 +00:00
Alkis Evlogimenos
63841bc85d
Fix output of live intervals to show correctly its closed, open
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ranges, i.e. [a,b)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10822 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13 21:17:47 +00:00
Alkis Evlogimenos
c55640f019
Remove unneeded check (with the recent change in live variables a use
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of a physical register is always dominated by a def).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10821 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13 21:16:25 +00:00
Alkis Evlogimenos
b7be115140
Indentation and whitespace cleanups.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10820 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13 20:42:08 +00:00
Alkis Evlogimenos
f7df173e3b
Fix bug introduced by previous commit: check if fixed intervals
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overlap before adding their spill weight.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10819 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13 20:37:01 +00:00
Alkis Evlogimenos
19b6486d38
Correctly compute live variable information for physical registers
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when an implicitely defined register is later used by an alias. For example:
call foo
%reg1024 = mov %AL
The call implicitely defines EAX but only AL is used. Before this fix
no information was available on AL. Now EAX and all its aliases except
AL get defined and die at the call instruction whereas AL lives to be
killed by the assignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10813 91177308-0d34-0410-b5e6-96231b3b80d8
2004-01-13 06:24:30 +00:00