a65b4eac3b
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
693244fb33
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
9a60c532a8
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
c85535c8be
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
449af59c7e
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
a47455dbd3
Instance var no longer exists
...
llvm-svn: 14520
2004-07-01 06:02:07 +00:00
6c375e4926
Start using MBB numbers directly instead of going through the live variables
...
map.
llvm-svn: 14518
2004-07-01 04:29:47 +00:00
7c77fd50e7
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
4cda555346
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
49b34f3f51
Do not dereference end iterators. It hurts when you do that.
...
llvm-svn: 14474
2004-06-29 06:56:51 +00:00
d22d9cb800
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
23dbc8170c
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
7d11fbf971
Convert tabs to spaces.
...
llvm-svn: 14373
2004-06-24 21:31:16 +00:00
cec9d0bcad
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
be667731ae
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
4fbff990b0
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
bcdadf3765
Move the IntrinsicLowering header into the CodeGen directory, as per PR346
...
llvm-svn: 14266
2004-06-20 07:49:54 +00:00
4300ca9d32
Make debugging dumps w/ multiple MachineBBs for a given LLVM BB readable.
...
llvm-svn: 14205
2004-06-17 22:26:53 +00:00
6b7275996c
Rename Type::PrimitiveID to TypeId and ::getPrimitiveID() to ::getTypeID()
...
llvm-svn: 14201
2004-06-17 18:19:28 +00:00
6f4a596234
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
5888b5d4b1
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
175532bb1e
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
7b4d0f9c22
Oops, this was not to go in
...
llvm-svn: 13958
2004-06-02 06:06:45 +00:00
2805c189dc
Adjust to the new TargetMachine interface
...
llvm-svn: 13957
2004-06-02 06:06:20 +00:00
2150542af9
Adjust to new TargetMachine interface
...
llvm-svn: 13956
2004-06-02 05:57:12 +00:00
185fa54c68
Inline findOptimalStorageSize into it's caller, both of which are sparc specific
...
llvm-svn: 13955
2004-06-02 05:56:52 +00:00
560b5e42ab
Finegrainify namespacification
...
llvm-svn: 13948
2004-06-02 04:28:06 +00:00
71f1d6d9d8
Fix a trivial but blatant bug
...
llvm-svn: 13947
2004-06-02 03:57:43 +00:00
fbe799cfa2
Pull Interval class out of LiveIntervals.
...
llvm-svn: 13910
2004-05-30 07:46:27 +00:00
a5268e8199
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
a8b396fe29
Fix typo in head-of-file comment.
...
llvm-svn: 13903
2004-05-30 03:33:48 +00:00
fd735bcf28
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
e3cec71bdc
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
1010116a8f
Remove defs vector from live intervals.
...
llvm-svn: 13892
2004-05-29 16:18:57 +00:00
50cbb9ad3e
updates to ModuloSched
...
llvm-svn: 13881
2004-05-28 20:14:12 +00:00
642685a400
Adding scheduling class.
...
llvm-svn: 13783
2004-05-26 06:27:36 +00:00
a066df6bd7
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
91fa3a9908
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
a578cb7a65
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
18dad6ed52
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
bcee21b491
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
9953d86e63
Fixed up my changes to add support for cloning Machine Instructions.
...
llvm-svn: 13665
2004-05-23 20:58:02 +00:00
e6a4a7dbcf
Adding support to clone MachineInstr
...
llvm-svn: 13661
2004-05-23 19:35:12 +00:00
6307b8d061
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
4cf17775e8
Start NextMBBNumber out at zero.
...
llvm-svn: 13515
2004-05-12 21:35:23 +00:00
cb5d22a0cb
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
24f200ad7b
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
39a1e0a33e
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
a2f7b9bddc
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
5eb8094c2d
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
Chris Lattner