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Author SHA1 Message Date
Brian Gaeke
560c89141f Replaced by include/Support/iterator.in. 
llvm-svn: 11753
 2004-02-23 18:16:10 +00:00
Brian Gaeke
c84da72de7 Regenerated with autoheader-2.57. 
llvm-svn: 11752
 2004-02-23 18:16:09 +00:00
Brian Gaeke
3d8b2af8a7 Add include/Support/iterator as an AC_OUTPUT file. 
llvm-svn: 11751
 2004-02-23 18:16:08 +00:00
Brian Gaeke
6385dd7b00 Make all iterator checks use AC_SUBST instead of AC_DEFINE. 
llvm-svn: 11750
 2004-02-23 18:16:07 +00:00
Brian Gaeke
7bee706526 Regenerated with autoconf-2.57. 
llvm-svn: 11749
 2004-02-23 18:16:06 +00:00
Alkis Evlogimenos
9b103024ef Refactor rewinding code for finding the first terminator of a basic 
block into MachineBasicBlock::getFirstTerminator().

This also fixes a bug in the implementation of the above in both
RegAllocLocal and InstrSched, where instructions where added after the
terminator if the basic block's only instruction was a terminator (it
shouldn't matter for RegAllocLocal since this case never occurs in
practice).

llvm-svn: 11748
 2004-02-23 18:14:48 +00:00
Chris Lattner
40e15a6000 Simplify code a bit, don't go off the end of the block, now that the current 
block we are in might be empty

llvm-svn: 11744
 2004-02-23 07:42:19 +00:00
Chris Lattner
28e4e925eb We were forgetting to add FP_REG_KILL instructions to basic blocks which will 
eventually get an assignment due to elimination of PHIs.

llvm-svn: 11743
 2004-02-23 07:29:45 +00:00
Chris Lattner
74418a30aa Implement cast.ll::test14/15 
llvm-svn: 11742
 2004-02-23 07:16:20 +00:00
Chris Lattner
fe1e1787c8 Add tests for casts that should be eliminated 
llvm-svn: 11741
 2004-02-23 07:16:03 +00:00
Chris Lattner
a65e5e3df1 Refactor some code. In the mul - setcc folding case, we really care about 
whether this is the sign bit or not, so check unsigned comparisons as well.

llvm-svn: 11740
 2004-02-23 06:38:22 +00:00
Chris Lattner
4a306afab5 Handle the unsigned form as well 
llvm-svn: 11739
 2004-02-23 06:37:33 +00:00
Alkis Evlogimenos
50598d1135 Improved PhysRegTracker interface. RegAlloc lazily allocates the register tracker using a std::auto_ptr 
llvm-svn: 11738
 2004-02-23 06:10:13 +00:00
Chris Lattner
9ecc3fc3c1 Implement mul.ll:test11 
llvm-svn: 11737
 2004-02-23 06:00:11 +00:00
Chris Lattner
c4076cb09d Add a slight variant of test10 
llvm-svn: 11736
 2004-02-23 05:59:52 +00:00
Chris Lattner
51b37305d9 Implement "strength reduction" of X <= C and X >= C 
llvm-svn: 11735
 2004-02-23 05:47:48 +00:00
Chris Lattner
c31a2e26ab Implement InstCombine/mul.ll:test10, which is a case that occurs when dealing 
with "predication"

llvm-svn: 11734
 2004-02-23 05:39:21 +00:00
Chris Lattner
ca8a8b6c3a This multiply can be eliminated 
llvm-svn: 11733
 2004-02-23 05:38:47 +00:00
Alkis Evlogimenos
99af6ca36b Simplify iterator usage now that we have next(). Also don't pass iterators by reference now that MachineInstr* are in an ilist 
llvm-svn: 11732
 2004-02-23 04:12:30 +00:00
Chris Lattner
d1828a306f Update the 'new features' section 
llvm-svn: 11731
 2004-02-23 03:51:34 +00:00
Chris Lattner
d1425828a3 Bug fixed 
llvm-svn: 11730
 2004-02-23 03:36:36 +00:00
Chris Lattner
b200638dc4 Work around a gas bug. Print '-9223372036854775808' as unsigned. 
llvm-svn: 11729
 2004-02-23 03:27:05 +00:00
Chris Lattner
85f13fae06 Implement cast fp -> bool 
llvm-svn: 11728
 2004-02-23 03:21:41 +00:00
Chris Lattner
2ec31046bc Add testcase for the casts that are missing in PR249 
llvm-svn: 11727
 2004-02-23 03:21:09 +00:00
Chris Lattner
795ca35cde Stop passing iterators around by reference now that we have ilists! 
Implement cast Type::ULongTy -> double

llvm-svn: 11726
 2004-02-23 03:10:10 +00:00
Alkis Evlogimenos
976f485826 Some code cleanups from Chris 
llvm-svn: 11724
 2004-02-23 01:57:39 +00:00
Alkis Evlogimenos
1525e120a6 Fix comments in PhysRegTracker and rename isPhysRegAvail to isRegAvail to be consistent with the other two 
llvm-svn: 11723
 2004-02-23 01:25:05 +00:00
Chris Lattner
f9acb33dfd Add a new cmove instruction 
llvm-svn: 11722
 2004-02-23 01:16:05 +00:00
Alkis Evlogimenos
ee3ef42726 Move LiveIntervals.h up to be the first included header 
llvm-svn: 11721
 2004-02-23 01:01:21 +00:00
Alkis Evlogimenos
ba2b9aec71 Pull PhysRegTracker out of RegAllocLinearScan as it can be used by other allocators as well 
llvm-svn: 11720
 2004-02-23 00:53:31 +00:00
Alkis Evlogimenos
850bd0819f Move LiveIntervals.h to lib/CodeGen since it shouldn't be exposed to other parts of the compiler 
llvm-svn: 11719
 2004-02-23 00:50:15 +00:00
Chris Lattner
cf8db3e8aa Only insert FP_REG_KILL instructions in MachineBasicBlocks that actually 
use FP instructions.  This reduces the number of instructions inserted in
176.gcc (for example) from 58074 to 101 (it doesn't use much FP, which
is typical).  This reduction speeds up the entire code generator.  In the
case of 176.gcc, llc went from taking 31.38s to 24.78s.  The passes that
sped up the most are the register allocator and the 2 live variable analysis
passes, which sped up 2.3, 1.3, and 1.5s respectively.  The asmprinter
pass also sped up because it doesn't print the instructions in comments :)

Note that this patch is likely to expose latent bugs in machine code passes,
because now basicblock can be empty, where they were never empty before.  I
cleaned out regalloclocal, but who knows about linscan :)

llvm-svn: 11717
 2004-02-22 19:47:26 +00:00
Chris Lattner
5485375e5d Another bug fix for empty MBB's 
llvm-svn: 11716
 2004-02-22 19:37:31 +00:00
Alkis Evlogimenos
7f7d70a53c Move MOTy::UseType enum into MachineOperand. This eliminates the 
switch statements in the constructors and simplifies the
implementation of the getUseType() member function. You will have to
specify defs using MachineOperand::Def instead of MOTy::Def though
(similarly for Use and UseAndDef).

llvm-svn: 11715
 2004-02-22 19:23:26 +00:00
Chris Lattner
56a7886c8a Fix a bug where we were implicitly assuming that there would be at least 
one terminator instruction in each basic block.

llvm-svn: 11714
 2004-02-22 19:08:15 +00:00
Chris Lattner
cc9a188e0a Reduce the number of pointless copies inserted due to constant pointer refs. 
Also, make an assertion actually fireable!

llvm-svn: 11713
 2004-02-22 17:35:42 +00:00
Chris Lattner
ed03319931 Fix bug in previous checkout: leave the iterator at the first instruction 
AFTER the GEP that was emitted.  :(

llvm-svn: 11712
 2004-02-22 17:05:38 +00:00
Alkis Evlogimenos
abc8efe386 Fix silly bug in implementation of getUseType(). Thanks Misha. 
llvm-svn: 11711
 2004-02-22 07:24:19 +00:00
Chris Lattner
ade64c9839 Completely rewrite how getelementptr instructions are expanded. This has two 
(minor) benefits right now:

1. An extra dummy MOVrr32 is gone.  This move would often be coallesced by
   both allocators anyway.
2. The code now uses the gep_type_iterator to walk the gep, which should future
   proof it a bit.  It still assumes that array indexes are Longs though.

These don't really justify rewriting the code.  The big benefit will come later
though.

llvm-svn: 11710
 2004-02-22 07:04:00 +00:00
Alkis Evlogimenos
6998610eda When folding memory operands in machine instructions be careful to 
leave register operands with the same use/def flags as the original
instruction.

llvm-svn: 11709
 2004-02-22 06:54:26 +00:00
Chris Lattner
a3f44e7098 Significantly simplify gep_type_iterator, and make its interface more general/powerful 
llvm-svn: 11708
 2004-02-22 06:27:03 +00:00
Chris Lattner
63b79422f3 Fix a soon-to-be-missing #include 
llvm-svn: 11707
 2004-02-22 06:26:17 +00:00
Chris Lattner
727748b382 Get all instruction definitions 
llvm-svn: 11706
 2004-02-22 06:25:38 +00:00
Chris Lattner
3392d316e9 Wow this is out of date. When we have _real_ code generator documentation, 
this should be folded into it.

llvm-svn: 11705
 2004-02-22 05:53:54 +00:00
Alkis Evlogimenos
ba33a0ab9b Print basic block boundaries in machine instruction debug output. 
llvm-svn: 11704
 2004-02-22 05:46:04 +00:00
Chris Lattner
f3e342dc45 Link to most recent "LLVM document" 
llvm-svn: 11703
 2004-02-22 05:45:02 +00:00
Chris Lattner
69bb1545d1 Implement Transforms/InstCombine/cast.ll:test13, a case which occurs in a 
hot 164.gzip loop.

llvm-svn: 11702
 2004-02-22 05:25:17 +00:00
Chris Lattner
6636526f53 Test that the instruction combiner can fold away a cast in a GEP instruction. 
This occurs in 164.gzip, as a result of it declaring arrays extern.

llvm-svn: 11701
 2004-02-22 05:24:09 +00:00
Chris Lattner
cf8afa52b8 The two address pass cannot handle two addr instructions where one incoming 
value is a physreg and one is a virtreg.  For this reason, disable copy folding
entirely for physregs.  Also, use the new isMoveInstr target hook which gives us
folding of FP moves as well.

llvm-svn: 11700
 2004-02-22 04:44:58 +00:00
Alkis Evlogimenos
32d12d31ae Abstract merging of ranges away from number of slots per instruction. 
Also make it less aggressive as the current implementation breaks in
some cases.

llvm-svn: 11696
 2004-02-22 04:05:13 +00:00