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2019 Commits

Author SHA1 Message Date
Alkis Evlogimenos
743d0a1f83 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11748 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-23 18:14:48 +00:00
Alkis Evlogimenos
a2f6a408dc Move LiveIntervals.h to lib/CodeGen since it shouldn't be exposed to other parts of the compiler 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11719 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-23 00:50:15 +00:00
Alkis Evlogimenos
890f92328d 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).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11715 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-22 19:23:26 +00:00
Alkis Evlogimenos
e33da36cbd Fix silly bug in implementation of getUseType(). Thanks Misha. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11711 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-22 07:24:19 +00:00
Alkis Evlogimenos
f216421181 When folding memory operands in machine instructions be careful to 
leave register operands with the same use/def flags as the original
instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11709 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-22 06:54:26 +00:00
Chris Lattner
2425f8c629 Significantly simplify gep_type_iterator, and make its interface more general/powerful 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11708 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-22 06:27:03 +00:00
Alkis Evlogimenos
7200c6b82a Abstract merging of ranges away from number of slots per instruction. 
Also make it less aggressive as the current implementation breaks in
some cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11696 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-22 04:05:13 +00:00
Chris Lattner
9c0b9bf2b5 Update comments and add warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11691 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-21 22:27:20 +00:00
Brian Gaeke
0c80389498 Regenerated using autoheader-2.57. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11657 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-20 06:40:58 +00:00
Alkis Evlogimenos
39a0d5c112 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11654 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-20 06:15:40 +00:00
Chris Lattner
bbdfe40ba7 Add a method useful for updating DSA 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11636 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-19 21:27:50 +00:00
Chris Lattner
9717ee9e6c Add a new function 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11630 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-19 20:03:08 +00:00
Chris Lattner
da8ab2ea45 ADd a method for when an instruction moves 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11626 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-19 18:28:22 +00:00
Chris Lattner
5e61fa9519 Add a MachineBasicBlock::getParent() method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11622 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-19 16:13:54 +00:00
Alkis Evlogimenos
1d29a6d6c7 Make ToolExecutionError inherit std::exception and implement its 
interface: getMessage() is gone, use what() instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11621 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-19 07:39:26 +00:00
Alkis Evlogimenos
04319bb2bd This is needed by assignment verification in linear-scan. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11618 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-19 01:10:55 +00:00
Chris Lattner
f03715c6a8 Add support for just compiling a program 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11610 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-18 23:24:29 +00:00
Alkis Evlogimenos
52f8f56ef4 Move unused typedefs in private section. Add method to return interval 
given a register.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11608 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-18 23:14:52 +00:00
Chris Lattner
c8580b2aee Byebye method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11598 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-18 20:38:12 +00:00
Chris Lattner
8c56be5e2b When an error occurs executing a tool, we now throw an exception instead 
of calling exit(1).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11593 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-18 20:21:57 +00:00
Chris Lattner
f5c8146a7c Change the order of the arguments to the ctor, allowing us to make the boolean default to true 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11592 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-18 20:20:52 +00:00
Chris Lattner
f1e3285f3a Move a helper class out of bugpoint to here. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11582 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-18 17:16:17 +00:00
Chris Lattner
9b2c31c5cb eliminate a pair of really inefficient methods now that noone uses them 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11579 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-18 16:45:22 +00:00
Chris Lattner
df2cf418a8 The CBE is no longer in llvm-dis 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11532 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-17 06:39:48 +00:00
Chris Lattner
8026a6982e Simplify and document the new interface 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11524 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-17 05:54:26 +00:00
Alkis Evlogimenos
7093d37304 Add LiveIntervals::Interval::empty() member function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11520 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-17 05:14:37 +00:00
Alkis Evlogimenos
b499866c05 Add API to check and fold memory operands into instructions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11519 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-17 04:33:18 +00:00
Chris Lattner
fcdb2c2a7f Add two missing pieces from last checkin 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11513 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-17 03:03:36 +00:00
Chris Lattner
3e3bcbd222 Rearrange code to eliminate warnings 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11512 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-17 02:58:36 +00:00
Alkis Evlogimenos
aad5c05051 Add LeakDetection to MachineInstr. 
Move out of line member functions of MachineBasicBlock to
MachineBasicBlock.cpp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11497 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-16 07:17:43 +00:00
Alkis Evlogimenos
843b160a20 Eliminate the use of spill (reserved) registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11476 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-15 10:24:21 +00:00
Chris Lattner
40bbeb5d07 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11470 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-15 05:53:04 +00:00
Chris Lattner
46ccf6d382 finegrainify namespacification 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11469 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-15 05:52:36 +00:00
Chris Lattner
ca705fa31d 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11467 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-15 04:14:47 +00:00
Chris Lattner
8604e75721 The prologue/epilogue related method calls have no reason to return a value, 
make them return void.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11447 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 19:49:05 +00:00
Chris Lattner
cf89908381 Add llvm.memset/frameaddress/returnaddress intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11431 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 02:47:17 +00:00
Alkis Evlogimenos
bc79471be1 Add next() and prior() iterator utility functions. Unlike std::advance 
they do not modify the passed iterator but return a copy.

next(myIt) returns copy of myIt incremented once
next(myIt, n) returns copy of myIt incremented n times
prior(myIt) returns copy of myIt decremented once
prior(myIt, n) returns copy of myIt decremented n times

While at it remove obsolete implementation of mapped_iterator.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11429 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 01:17:28 +00:00
Chris Lattner
d11e647257 Add method 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11425 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-14 00:30:31 +00:00
Chris Lattner
8ff9a8639a Make sure to provide a prototype for the cbackend 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11419 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 23:36:03 +00:00
Chris Lattner
8e3eb5542b The cbackend has never had anything to do with llvm assembly writing 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11411 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 23:19:51 +00:00
Chris Lattner
208d638fa4 Change access to the cwriter 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11406 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 23:00:45 +00:00
Alkis Evlogimenos
be766c7246 Remove getAllocatedRegNum(). Use getReg() instead. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11393 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 21:01:20 +00:00
Alkis Evlogimenos
903b22cd51 Mark MachineBasicBlock::operator[] deprecated. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11392 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 20:05:56 +00:00
Alkis Evlogimenos
87af94b291 Add getNumVirtualRegs(). 
Whitespace cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11388 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 18:07:06 +00:00
Misha Brukman
a92666decd Fix spelling of `tendency'. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11378 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 16:23:14 +00:00
Chris Lattner
fdd13f6afe Expose a pass ID for lower-invoke 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11377 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 16:16:35 +00:00
Brian Gaeke
a0031cc08c Update the example here in the header file. 
I don't know about you guys, but I rarely read the .html manuals :-)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11366 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 04:49:04 +00:00
Brian Gaeke
f13a3f4dd1 Include <iosfwd>. 
Add prototypes for MachineBasicBlock's dump() and print() methods.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11365 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-13 04:40:15 +00:00
Alkis Evlogimenos
94dc07728f Move ilist_trairs<MachineInstr> in MachineBasicBlock. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11358 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 19:12:03 +00:00
Alkis Evlogimenos
ab8672c8bb 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@11357 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-02-12 18:49:07 +00:00