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125 Commits

Author SHA1 Message Date
Evan Cheng
ce7f2618a9 Interface clean up. 
llvm-svn: 34772
 2007-03-01 02:25:51 +00:00
Chris Lattner
5a20764bbb add a newline at end of file 
llvm-svn: 34735
 2007-02-28 06:42:11 +00:00
Evan Cheng
db591ecaa8 Make requiresRegisterScavenging determination on a per MachineFunction basis. 
llvm-svn: 34711
 2007-02-28 00:59:19 +00:00
Evan Cheng
ee2e5de4fb MRegisterInfo disowns RegScavenger. It's immutable. 
llvm-svn: 34706
 2007-02-28 00:17:36 +00:00
Evan Cheng
4c4e56df47 Let MRegisterInfo now owns RegScavenger. 
llvm-svn: 34691
 2007-02-27 21:10:33 +00:00
Evan Cheng
341fc2bf88 forward() should not increment internal iterator. Its client may insert instruction between now and next forward() call. 
llvm-svn: 34649
 2007-02-27 01:58:48 +00:00
Evan Cheng
92429f4cca First potential client of register scavenger. 
llvm-svn: 34516
 2007-02-23 01:11:26 +00:00
Jim Laskey
64f4242072 Change the MachineDebugInfo to MachineModuleInfo to better reflect usage 
for debugging and exception handling.

llvm-svn: 33550
 2007-01-26 21:22:28 +00:00
Evan Cheng
b64363a085 Added a MRegisterInfo hook that tells PEI the target is responsible for 
rounding the stack frame to a multiple of stack alignment.

llvm-svn: 33504
 2007-01-25 22:12:41 +00:00
Evan Cheng
b6a4a7f72a PEI is now responsible for adding MaxCallFrameSize to frame size and align the stack. Each target can further adjust the frame size if necessary. 
llvm-svn: 33460
 2007-01-23 09:38:11 +00:00
Evan Cheng
4e647ad333 Remove an unused variable. 
llvm-svn: 33396
 2007-01-20 09:21:54 +00:00
Evan Cheng
7e02b3a690 We not align the final stack slot but instead let the target do so in emitPrologue(). Each target can make adjustments to the stack frame and re-align the stack as it deem appropriate. Do not align it twice which can end up wasting stack space. 
llvm-svn: 33387
 2007-01-20 02:07:13 +00:00
Evan Cheng
09bcc91be2 - Fixing naming inconsistency: calleesave -> calleesaved. 
- Make use of spillCalleeSavedRegisters() and restoreCalleeSavedRegisters().

llvm-svn: 32822
 2007-01-02 21:31:15 +00:00
Evan Cheng
b5a57532b0 Initialize {Min|Max}CSFrameIndex properly. 
llvm-svn: 32299
 2006-12-07 02:25:34 +00:00
Evan Cheng
5a3f89027f TargetRegisterClass specifies the desired spill alignment. However, it cannot be honored if stack alignment is smaller. 
llvm-svn: 30648
 2006-09-28 18:52:32 +00:00
Evan Cheng
5e8af45ddb PEI now place callee save spills closest to the address pointed to by the 
incoming stack. This allows X86 backend to use push / pop in epilogue /
prologue.

llvm-svn: 30636
 2006-09-28 00:10:27 +00:00
Evan Cheng
310d2abd29 Rename function. It's determining which callee-save registers to save. 
llvm-svn: 30616
 2006-09-26 22:29:31 +00:00
Chris Lattner
33bd5dcfb7 s|llvm/Support/Visibility.h|llvm/Support/Compiler.h| 
llvm-svn: 29911
 2006-08-27 12:54:02 +00:00
Jim Laskey
e9b0e1014e Tidy up. 
llvm-svn: 29888
 2006-08-25 22:56:30 +00:00
Jim Laskey
3af6953257 Consolidate callee saved register information so that it can me used by debug 
information and exception handling.

llvm-svn: 29881
 2006-08-25 19:45:51 +00:00
Chris Lattner
de706b3e3e Shave another 27K off libllvmgcc.dylib with visibility hidden 
llvm-svn: 28973
 2006-06-28 22:17:39 +00:00
Chris Lattner
11064741d3 Remove dead variable 
llvm-svn: 28253
 2006-05-12 18:02:04 +00:00
Jim Laskey
b93bc75add Foundation for call frame information. 
llvm-svn: 27491
 2006-04-07 16:34:46 +00:00
Chris Lattner
4601b86ad0 The stack alignment is now computed dynamically, just verify it is correct. 
llvm-svn: 27380
 2006-04-03 21:39:57 +00:00
Chris Lattner
fc76f9f0c1 Always compute max align. 
llvm-svn: 24227
 2005-11-06 17:43:20 +00:00
Nate Begeman
aecebc076b Add the necessary support to the ISel to allow targets to codegen the new 
alignment information appropriately.  Includes code for PowerPC to support
fixed-size allocas with alignment larger than the stack.  Support for
arbitrarily aligned dynamic allocas coming soon.

llvm-svn: 24224
 2005-11-06 09:00:38 +00:00
Chris Lattner
3fcb5aa250 now that we have a reg class to spill with, get this info from the regclass 
llvm-svn: 23559
 2005-09-30 17:19:22 +00:00
Chris Lattner
738631f389 Now that we have getCalleeSaveRegClasses() info, use it to pass the register 
class into the spill/reload methods.  Targets can now rely on that argument.

llvm-svn: 23556
 2005-09-30 16:59:07 +00:00
Chris Lattner
a9cd99bbc1 Change this code ot pass register classes into the stack slot spiller/reloader 
code.  PrologEpilogInserter hasn't been updated yet though, so targets cannot
use this info.

llvm-svn: 23536
 2005-09-30 01:29:00 +00:00
Chris Lattner
21400573a7 Fix a bug in my previous patch that was using the wrong iterator. This fixes 
Olden/bisort among others.

llvm-svn: 23124
 2005-08-29 00:10:46 +00:00
Chris Lattner
5f55dd72af Make this code safe for when loadRegFromStackSlot inserts multiple instructions. 
llvm-svn: 23108
 2005-08-26 22:18:32 +00:00
Chris Lattner
54bf1cc313 When inserting callee-save register reloads, make sure to skip over any 
terminator instructions before the 'ret' in case the target has a
multi-instruction return sequence.

llvm-svn: 22041
 2005-05-15 03:09:58 +00:00
Chris Lattner
a3e57bd844 Tolerate instrs with extra args 
llvm-svn: 21982
 2005-05-13 21:07:15 +00:00
Misha Brukman
774e55c446 Remove trailing whitespace 
llvm-svn: 21420
 2005-04-21 22:36:52 +00:00
Chris Lattner
65fc8007cd Simplify/speedup the PEI by not having to scan for uses of the callee saved 
registers.  This information is computed directly by the register allocator
now.

llvm-svn: 19795
 2005-01-23 23:13:12 +00:00
Chris Lattner
c187b917f2 Speed this up a bit by making ModifiedRegs a vector<char> not vector<bool> 
llvm-svn: 19787
 2005-01-23 21:45:01 +00:00
Chris Lattner
29d6389d78 Implicitly defined registers can clobber callee saved registers too! 
This fixes the return-address-not-being-saved problem in the Alpha backend.

llvm-svn: 19741
 2005-01-22 00:49:16 +00:00
Chris Lattner
0e7435bc5b Add an assertion that would have made more sense to duraid 
llvm-svn: 19704
 2005-01-19 21:32:07 +00:00
Nate Begeman
efbdaad4b7 Put this change back in after testing from Reid proved its innocence. getSpillSize now returns value in bits 
llvm-svn: 16102
 2004-08-29 22:00:24 +00:00
Nate Begeman
ad24578e7d Back out change to divide getSpillSize by 8 until I figure out why it breaks x86, which has register sizes in bits. 
llvm-svn: 16073
 2004-08-27 16:48:24 +00:00
Nate Begeman
c0e42be976 Register sizes are in bits, not bytes 
llvm-svn: 16070
 2004-08-27 04:28:10 +00:00
Chris Lattner
0df8bcf2fa Register info alignment is in bits, frame object alignment is (currently) in 
bytes.

llvm-svn: 15970
 2004-08-21 20:04:59 +00:00
Chris Lattner
7ead36e4a4 Now that we have per-register spill size/alignment info, remove more uses 
of getRegClass

llvm-svn: 15967
 2004-08-21 19:45:10 +00:00
Chris Lattner
463d46f17a Stop using CreateStackObject(RegClass*) 
llvm-svn: 15775
 2004-08-15 22:02:22 +00:00
Chris Lattner
e58190f5f6 These methods no longer take a TargetRegisterClass* operand. 
llvm-svn: 15774
 2004-08-15 21:56:44 +00:00
Alkis Evlogimenos
dbe432aee7 Make this compile on gc 3.4.1 (static_cast to non-const type was not 
allowed).

llvm-svn: 15766
 2004-08-15 09:18:55 +00:00
Nate Begeman
cbc21460f2 Elminiate MachineFunction& argument from eliminateFrameIndex 
llvm-svn: 15736
 2004-08-14 22:00:10 +00:00
Chris Lattner
1a0fa932e1 Split saveCallerSavedRegisters into two methods for clarity, and add comments. 
Add support for targets that must spill certain physregs at certain locations.

Patch contributed by Nate Begeman, slightly hacked by me.

llvm-svn: 15701
 2004-08-12 19:01:14 +00:00
Chris Lattner
c5f185c269 Ok get rid of the REST of the tabs 
llvm-svn: 15564
 2004-08-07 07:18:41 +00:00
Chris Lattner
560e2f0751 Death to tabs 
llvm-svn: 15563
 2004-08-07 07:07:57 +00:00