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1030 Commits

Author SHA1 Message Date
Chris Lattner
5b96ed7d1b Revert patches 1.79 and 1.80 which had to do with dead MBB's. Now that they 
don't exist, we don't have to pretend to handle them.

llvm-svn: 14567
 2004-07-02 05:52:23 +00:00
Chris Lattner
1e20aefbcb Add a trivially simple pass to delete unreachable blocks from the CFG. This 
pass is required to paper over problems in the code generator (primarily
live variables and its clients) which doesn't really have any well defined
semantics for unreachable code.

The proper solution to this problem is to have instruction selectors not
select blocks that are unreachable.  Until we have a instruction selection
framework available for use, however, we can't expect all instruction
selector writers to do this.  Until then, this pass should be used.

llvm-svn: 14563
 2004-07-02 05:46:10 +00:00
Chris Lattner
91662f48b8 Make sure that we destroy the MBB's, with all of their instructions, before 
any other data structures

llvm-svn: 14524
 2004-07-01 06:29:07 +00:00
Chris Lattner
93bf3a5985 Now that MachineFunction/MachineBasicBlock keep a mapping of blocks to ID #'s 
use them instead of a local LiveVariables numbering

llvm-svn: 14523
 2004-07-01 06:15:32 +00:00
Chris Lattner
43e765d61c Change MBB autonumber a bit to get the reverse mapping as well as a forward 
mapping

llvm-svn: 14521
 2004-07-01 06:02:27 +00:00
Chris Lattner
a2481b7e82 Instance var no longer exists 
llvm-svn: 14520
 2004-07-01 06:02:07 +00:00
Chris Lattner
ae4f21e30a Start using MBB numbers directly instead of going through the live variables 
map.

llvm-svn: 14518
 2004-07-01 04:29:47 +00:00
Chris Lattner
0bb956cda7 Instead of building a private numbering of MBB's use brg's nifty auto-numbering. 
Also convert df_iterator -> df_ext_iterator for subsequent stuff I'm doing.

llvm-svn: 14517
 2004-07-01 04:24:29 +00:00
Chris Lattner
41c3157c70 In line with the previous patch, do not assert out if analyzing a dead basic block. 
llvm-svn: 14475
 2004-06-29 07:16:23 +00:00
Chris Lattner
27c176234c Do not dereference end iterators. It hurts when you do that. 
llvm-svn: 14474
 2004-06-29 06:56:51 +00:00
Chris Lattner
fd25f66f50 Do not find these ugly sparc-specific objects by using the annotation API on 
instructions.  Instead, keep a map of instructions -> MCFI objects in the
already sparc-specific class MachineFunctionInfo.  This will slow down the
sparc backend a bit, but it does not penalize the rest of LLVM!

llvm-svn: 14438
 2004-06-27 18:52:17 +00:00
Tanya Lattner
da38dc5180 Made a fix so that you can print out MachineInstrs that belong to a MachineBasicBlock that is not yet attached to a MachineFunction. This change includes changing the third operand (TargetMachine) to a pointer for the MachineInstr::print function. 
llvm-svn: 14389
 2004-06-25 00:13:11 +00:00
Misha Brukman
0a98455ab9 Convert tabs to spaces. 
llvm-svn: 14373
 2004-06-24 21:31:16 +00:00
Misha Brukman
f1da4cac4b Making an archive version of the CodeGen library is unnecessary if we just 
move InstructionLowering itself.

llvm-svn: 14324
 2004-06-22 17:52:30 +00:00
Misha Brukman
261c779bd6 Provide archive version of CodeGen library (for those tools that only need 
IntrinsicLowering, for instance).

llvm-svn: 14323
 2004-06-22 17:28:43 +00:00
Chris Lattner
6be1c456a8 Rename Interval class to LiveInterval to avoid conflicting with the already 
existing llvm::Interval class.

Patch contributed by Vladimir Prus!
http://mail.cs.uiuc.edu/pipermail/llvmbugs/2004-June/000710.html

llvm-svn: 14281
 2004-06-21 13:10:56 +00:00
Chris Lattner
cc465361d9 Move the IntrinsicLowering header into the CodeGen directory, as per PR346 
llvm-svn: 14266
 2004-06-20 07:49:54 +00:00
Brian Gaeke
6f6eb93de3 Make debugging dumps w/ multiple MachineBBs for a given LLVM BB readable. 
llvm-svn: 14205
 2004-06-17 22:26:53 +00:00
Chris Lattner
0cd29ae2cd Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID() 
llvm-svn: 14201
 2004-06-17 18:19:28 +00:00
Chris Lattner
1b8f37597d Fix a recent regression in Applications/sgefa that Alkis pointed out to me. 
The vector may actually be empty if the register that we are marking as
recently used is not actually allocatable.  This happens for physical registers
that are not allocatable, like the ST(x) registers on X86.

llvm-svn: 14195
 2004-06-16 06:57:29 +00:00
Chris Lattner
84269aa91e Fix fallout from getOffsetOfLocalArea() being negated. Debugging dumps were being 
printed incorrectly, and we were reserving 8 extra bytes of stack space for functions
on X86.

llvm-svn: 14152
 2004-06-11 06:37:11 +00:00
Chris Lattner
71f351ddf9 Fix the prolog epilog code inserter to match the documentation and support 
targets whose stack grows up.

Patch contributed by Vladimir Prus

llvm-svn: 14111
 2004-06-10 06:23:35 +00:00
Chris Lattner
a764d77ed3 Oops, this was not to go in 
llvm-svn: 13958
 2004-06-02 06:06:45 +00:00
Chris Lattner
ee2687a351 Adjust to the new TargetMachine interface 
llvm-svn: 13957
 2004-06-02 06:06:20 +00:00
Chris Lattner
0046ea7105 Adjust to new TargetMachine interface 
llvm-svn: 13956
 2004-06-02 05:57:12 +00:00
Chris Lattner
1dbe919e91 Inline findOptimalStorageSize into it's caller, both of which are sparc specific 
llvm-svn: 13955
 2004-06-02 05:56:52 +00:00
Chris Lattner
7d6b37af05 Finegrainify namespacification 
llvm-svn: 13948
 2004-06-02 04:28:06 +00:00
Chris Lattner
98a6bb89cf Fix a trivial but blatant bug 
llvm-svn: 13947
 2004-06-02 03:57:43 +00:00
Alkis Evlogimenos
f410424283 Pull Interval class out of LiveIntervals. 
llvm-svn: 13910
 2004-05-30 07:46:27 +00:00
Alkis Evlogimenos
2598a63586 When spilling an register, introduce a new temporary for each of its 
spills. This allows for more flexibility when allocating registers for
spill code.

llvm-svn: 13907
 2004-05-30 07:24:39 +00:00
Brian Gaeke
2281858cf6 Fix typo in head-of-file comment. 
llvm-svn: 13903
 2004-05-30 03:33:48 +00:00
Alkis Evlogimenos
516e16441b Add method to assign stack slot to virtual register without creating a 
new one.

llvm-svn: 13895
 2004-05-29 20:38:05 +00:00
Alkis Evlogimenos
c5923ac8b1 Add grow() member that grows the maps when the number of virtual 
registers in the function has changed.

llvm-svn: 13893
 2004-05-29 19:03:29 +00:00
Alkis Evlogimenos
d50a5109ff Remove defs vector from live intervals. 
llvm-svn: 13892
 2004-05-29 16:18:57 +00:00
Tanya Lattner
a275dfcce4 updates to ModuloSched 
llvm-svn: 13881
 2004-05-28 20:14:12 +00:00
Tanya Lattner
8c5d9dcc42 Adding scheduling class. 
llvm-svn: 13783
 2004-05-26 06:27:36 +00:00
Tanya Lattner
bd1298d574 Updating my cvs versions. THis is still in progress and much will be changed. 
llvm-svn: 13782
 2004-05-26 06:27:18 +00:00
Tanya Lattner
7cf16701f7 Moved MachineBasicBlock deconstructor to cpp file and removed it from LeakDetector to fix memory leak bug. 
llvm-svn: 13718
 2004-05-24 07:14:35 +00:00
Tanya Lattner
aabaaec037 Added MachineFunction parent* to MachineBasicBlock. Customized ilist template 
to set the parent when a MachineBasicBlock is added to a MachineFunction.

llvm-svn: 13716
 2004-05-24 06:11:51 +00:00
Chris Lattner
f38d51ea42 Eliminate an explicit use of the LLVM basic block, using getParent instead, 
which simplifies the code

llvm-svn: 13707
 2004-05-24 03:44:52 +00:00
Tanya Lattner
55477a5af1 Changed clone to be const. 
Changed copy constructor to set parent, prev, and next pointers to null.

llvm-svn: 13706
 2004-05-24 03:14:18 +00:00
Tanya Lattner
e755fc6689 Fixed up my changes to add support for cloning Machine Instructions. 
llvm-svn: 13665
 2004-05-23 20:58:02 +00:00
Tanya Lattner
2848065a29 Adding support to clone MachineInstr 
llvm-svn: 13661
 2004-05-23 19:35:12 +00:00
Chris Lattner
f29acd5214 Fix a really nasty bug from my changes on Monday to PHIElim. These changes 
broke obsequi and a lot of other things.  It all boiled down to MBB being
overloaded in an inner scope and me confusing it with the one in the outer
scope.  Ugh!

llvm-svn: 13517
 2004-05-12 21:47:57 +00:00
Brian Gaeke
79c7de0723 Start NextMBBNumber out at zero. 
llvm-svn: 13515
 2004-05-12 21:35:23 +00:00
Brian Gaeke
6009468edd Add non-const MachineBasicBlock::getParent() accessor method. 
MBBs start out as #-1. When a MBB is added to a MachineFunction, it
gets the next available unique MBB number. If it is removed from a
MachineFunction, it goes back to being #-1.

llvm-svn: 13514
 2004-05-12 21:35:22 +00:00
Chris Lattner
279d8e8e2d Switch this from using an std::map to using a DenseMap. This speeds up 
phi-elimination from 0.6 to 0.54s on kc++.

llvm-svn: 13454
 2004-05-10 19:17:36 +00:00
Chris Lattner
3fb5488b5e Use a new VRegPHIUseCount to compute uses of PHI values by other phi values 
in the basic block being processed.  This fixes PhiElimination on kimwitu++
from taking 105s to taking a much more reasonable 0.6s (in a debug build).

llvm-svn: 13453
 2004-05-10 19:06:37 +00:00
Chris Lattner
8b57a31ff4 Now that we use an ilist of machine instructions, iterators are more robust 
than before.  Because this is the case, we can compute the first non-phi
instruction once when de-phi'ing a block.  This shaves ~4s off of
phielimination of _Z7yyparsev in kimwitu++ from 109s -> 105s.  There are
still much more important gains to come.

llvm-svn: 13452
 2004-05-10 18:47:18 +00:00
Chris Lattner
b37490a331 Patch to fix PR337. Make sure to mark all aliased physical registers as used 
when we see a read of a register.  This is important in cases like:

AL = ...
AH = ...

   = AX

The read of AX must make both the AL and AH defs live until the use.

llvm-svn: 13444
 2004-05-10 05:12:43 +00:00