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1852 Commits

Author SHA1 Message Date
Chris Lattner
9f2c8c7ea5 Add some helpful methods for dealing with switch instructions 
llvm-svn: 11794
 2004-02-24 06:26:00 +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
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
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
Alkis Evlogimenos
abc8efe386 Fix silly bug in implementation of getUseType(). Thanks Misha. 
llvm-svn: 11711
 2004-02-22 07:24:19 +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
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
Chris Lattner
7906b0bc03 Update comments and add warning 
llvm-svn: 11691
 2004-02-21 22:27:20 +00:00
Alkis Evlogimenos
f32239a5c6 Too many changes in one commit: 
1. LiveIntervals now implement a 4 slot per instruction model. Load,
   Use, Def and a Store slot. This is required in order to correctly
   represent caller saved register clobbering on function calls,
   register reuse in the same instruction (def resues last use) and
   also spill code added later by the allocator. The previous
   representation (2 slots per instruction) was insufficient and as a
   result was causing subtle bugs.

2. Fixes in spill code generation. This was the major cause of
   failures in the test suite.

3. Linear scan now has core support for folding memory operands. This
   is untested and not enabled (the live interval update function does
   not attempt to fold loads/stores in instructions).

4. Lots of improvements in the debugging output of both live intervals
   and linear scan. Give it a try... it is beautiful :-)

In summary the above fixes all the issues with the recent reserved
register elimination changes and get the allocator very close to the
next big step: folding memory operands.

llvm-svn: 11654
 2004-02-20 06:15:40 +00:00
Chris Lattner
1316ee07fa Add a method useful for updating DSA 
llvm-svn: 11636
 2004-02-19 21:27:50 +00:00
Chris Lattner
6c338f7627 ADd a method for when an instruction moves 
llvm-svn: 11626
 2004-02-19 18:28:22 +00:00
Chris Lattner
436ab13009 Add a MachineBasicBlock::getParent() method 
llvm-svn: 11622
 2004-02-19 16:13:54 +00:00
Alkis Evlogimenos
59c646da40 Make ToolExecutionError inherit std::exception and implement its 
interface: getMessage() is gone, use what() instead.

llvm-svn: 11621
 2004-02-19 07:39:26 +00:00
Alkis Evlogimenos
ef9c4f4339 This is needed by assignment verification in linear-scan. 
llvm-svn: 11618
 2004-02-19 01:10:55 +00:00
Chris Lattner
00012233a7 Add support for just compiling a program 
llvm-svn: 11610
 2004-02-18 23:24:29 +00:00
Alkis Evlogimenos
d4fd43dee8 Move unused typedefs in private section. Add method to return interval 
given a register.

llvm-svn: 11608
 2004-02-18 23:14:52 +00:00
Chris Lattner
15a1c4c452 Byebye method 
llvm-svn: 11598
 2004-02-18 20:38:12 +00:00
Chris Lattner
72ce97cc95 When an error occurs executing a tool, we now throw an exception instead 
of calling exit(1).

llvm-svn: 11593
 2004-02-18 20:21:57 +00:00
Chris Lattner
34f3bce70c eliminate a pair of really inefficient methods now that noone uses them 
llvm-svn: 11579
 2004-02-18 16:45:22 +00:00
Chris Lattner
f877cd09d0 The CBE is no longer in llvm-dis 
llvm-svn: 11532
 2004-02-17 06:39:48 +00:00
Chris Lattner
affbcb6be5 Simplify and document the new interface 
llvm-svn: 11524
 2004-02-17 05:54:26 +00:00
Alkis Evlogimenos
a479dc4715 Add LiveIntervals::Interval::empty() member function. 
llvm-svn: 11520
 2004-02-17 05:14:37 +00:00
Alkis Evlogimenos
c4ec9111bb Add API to check and fold memory operands into instructions. 
llvm-svn: 11519
 2004-02-17 04:33:18 +00:00
Chris Lattner
0b89611d3f Add two missing pieces from last checkin 
llvm-svn: 11513
 2004-02-17 03:03:36 +00:00
Chris Lattner
e26c3df17f Rearrange code to eliminate warnings 
llvm-svn: 11512
 2004-02-17 02:58:36 +00:00
Alkis Evlogimenos
790b000aa7 Add LeakDetection to MachineInstr. 
Move out of line member functions of MachineBasicBlock to
MachineBasicBlock.cpp.

llvm-svn: 11497
 2004-02-16 07:17:43 +00:00
Alkis Evlogimenos
1026a01d5a Eliminate the use of spill (reserved) registers. 
llvm-svn: 11476
 2004-02-15 10:24:21 +00:00
Chris Lattner
363cd9e4b8 Add a new ConstantAggregateZero class, to fix PR239. This makes zero 
initializers for constant structs and arrays take constant space, instead of
space proportinal to the number of elements.  This reduces the memory usage of
the LLVM compiler by hundreds of megabytes when compiling some nasty SPEC95
benchmarks.

llvm-svn: 11470
 2004-02-15 05:53:04 +00:00
Chris Lattner
bbe538e930 finegrainify namespacification 
llvm-svn: 11469
 2004-02-15 05:52:36 +00:00
Chris Lattner
0f819b9523 ConstantArray::get and ConstantStruct::get now just return pointers to 
'Constant', instead of specific subclass pointers.  In the future, these will
return an instance of ConstantAggregateZero if all of the inputs are zeros.

llvm-svn: 11467
 2004-02-15 04:14:47 +00:00
Chris Lattner
b8bfcaff7e The prologue/epilogue related method calls have no reason to return a value, 
make them return void.

llvm-svn: 11447
 2004-02-14 19:49:05 +00:00
Chris Lattner
cdfcb976c7 Add llvm.memset/frameaddress/returnaddress intrinsics. 
llvm-svn: 11431
 2004-02-14 02:47:17 +00:00
Chris Lattner
1bad051558 Add method 
llvm-svn: 11425
 2004-02-14 00:30:31 +00:00
Chris Lattner
8641f2fb58 Make sure to provide a prototype for the cbackend 
llvm-svn: 11419
 2004-02-13 23:36:03 +00:00
Chris Lattner
c3f1cb677f The cbackend has never had anything to do with llvm assembly writing 
llvm-svn: 11411
 2004-02-13 23:19:51 +00:00
Chris Lattner
d2cd0afd11 Change access to the cwriter 
llvm-svn: 11406
 2004-02-13 23:00:45 +00:00
Alkis Evlogimenos
6d6ab846af Remove getAllocatedRegNum(). Use getReg() instead. 
llvm-svn: 11393
 2004-02-13 21:01:20 +00:00
Alkis Evlogimenos
e504fa6710 Mark MachineBasicBlock::operator[] deprecated. 
llvm-svn: 11392
 2004-02-13 20:05:56 +00:00
Alkis Evlogimenos
c109214f58 Add getNumVirtualRegs(). 
Whitespace cleanups.

llvm-svn: 11388
 2004-02-13 18:07:06 +00:00
Misha Brukman
47df5a35ec Fix spelling of `tendency'. 
llvm-svn: 11378
 2004-02-13 16:23:14 +00:00
Chris Lattner
2b87d0184b Expose a pass ID for lower-invoke 
llvm-svn: 11377
 2004-02-13 16:16:35 +00:00
Brian Gaeke
7707461afa Include <iosfwd>. 
Add prototypes for MachineBasicBlock's dump() and print() methods.

llvm-svn: 11365
 2004-02-13 04:40:15 +00:00
Alkis Evlogimenos
00d97b6a13 Move ilist_trairs<MachineInstr> in MachineBasicBlock. 
llvm-svn: 11358
 2004-02-12 19:12:03 +00:00
Alkis Evlogimenos
3ecdcd18c5 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.

llvm-svn: 11357
 2004-02-12 18:49:07 +00:00
Chris Lattner
7c8aebbdbc Add support for the llvm.memmove intrinsic. 
Patch graciously contributed by Reid Spencer!

llvm-svn: 11354
 2004-02-12 18:10:10 +00:00
Chris Lattner
d2ee2d61ac Urg, check in header I forgot. :( 
llvm-svn: 11353
 2004-02-12 17:57:11 +00:00
Chris Lattner
ef375052c6 Rename the opCode instance variable to Opcode 
llvm-svn: 11348
 2004-02-12 16:09:53 +00:00
Chris Lattner
04c37927bd Remove a dead field from MachineInstr! 
llvm-svn: 11347
 2004-02-12 16:05:03 +00:00
Alkis Evlogimenos
94cab18bdc Change interface so that we can add to the end of a basic block 
without getting an assertion from ilist that we are dereferencing
ilist<T>::end().

llvm-svn: 11345
 2004-02-12 08:11:04 +00:00