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25 Commits

Author SHA1 Message Date
Reid Spencer
8bf21cd984 Fix stack size processing now that the return address isn't an implied 
push onto the top of the stack like x86, which uses the local area
offset.  This will allow the removal of PowerPCPEI.cpp soon.

llvm-svn: 15573
 2004-08-09 01:24:32 +00:00
Chris Lattner
bbf11b1e1d Changes commited for Nate Begeman: 
Use a PowerPC specific prolog epilog inserter to control where spilled
callee save regs are placed on the stack.
Get rid of implicit return address stack slot, save return address reg
(LR) in appropriate slot
Improve code generated for functions that don't have calls or access
globals


Note from Chris: PowerPCPEI will eventually be eliminated, once the
functionality is merged into CodeGen/PrologEpilogInserter.cpp

llvm-svn: 15536
 2004-08-06 06:58:50 +00:00
Misha Brukman
27ced926da * Temporarily suspend LR save/restore optimization as it is not quite correct 
* Implement large fixed-size allocas            Entire patch by Nate Begeman.

llvm-svn: 15345
 2004-07-30 15:50:45 +00:00
Misha Brukman
0f26a3309f Remove empty unused method processFunctionBeforeFrameFinalized() 
llvm-svn: 15284
 2004-07-27 18:38:40 +00:00
Misha Brukman
adb86dba29 Save and restore LR just like any other register and ONLY if we actually modify 
it (due to calls or globals access).  We now compile `void empty(){}' to `blr'.

llvm-svn: 15274
 2004-07-27 17:17:18 +00:00
Misha Brukman
6272268028 Do not store the stack pointer if the stack size is 0. 
Also, convert C-style comments to C++ and make sure code wraps at 80 cols.

llvm-svn: 15245
 2004-07-26 22:00:26 +00:00
Misha Brukman
29efda2e6b Fix subtracting values > 2^15 in the prologue/epilogue, by Nate Begeman. 
llvm-svn: 15234
 2004-07-26 16:22:52 +00:00
Misha Brukman
752584b520 Use addSImm() instead of addImm() for stack offsets, which may be negative. 
llvm-svn: 15081
 2004-07-21 19:36:57 +00:00
Misha Brukman
0a12f91274 Fix stack frame layout in prologue/epilogue. Patch courtesy of Nate Begeman. 
llvm-svn: 15026
 2004-07-20 02:23:09 +00:00
Misha Brukman
3a720bbeaa * Store all non-volatile int registers R13-31 on the stack, restore on exit 
* Fix comment formatting

llvm-svn: 14900
 2004-07-16 20:55:20 +00:00
Chris Lattner
773f2d65c2 Delete the allocate*TargetMachine function, which is now dead. 
The shared command line options are now in a header that makes sense.

llvm-svn: 14757
 2004-07-11 04:17:58 +00:00
Chris Lattner
164659f141 Add compilability 
llvm-svn: 14744
 2004-07-11 02:48:28 +00:00
Misha Brukman
1881beb0b3 Read/write the offset value for stack-relative loads via correct instr operand. 
llvm-svn: 14722
 2004-07-09 15:37:16 +00:00
Misha Brukman
607dd868a8 Add FIXME notes for spilling int/fp regs (need to calculate stack space). 
llvm-svn: 14581
 2004-07-02 17:54:38 +00:00
Misha Brukman
c9ecaeb69d * Follow the PowerPC convention of leaving 24 bytes for linking on the stack. 
* Also leave space for spilling integer registers (this should be calculated)

llvm-svn: 14554
 2004-07-01 21:35:00 +00:00
Misha Brukman
49e6aa1ba7 Always assume a function may have calls because the printer may add `bl' to get 
the PC in a code sequence for global variables.

llvm-svn: 14506
 2004-06-30 00:09:12 +00:00
Misha Brukman
79a92e35b4 Set up the prologue and epilogue to be more like the manual and GCC output. 
llvm-svn: 14502
 2004-06-29 23:38:26 +00:00
Misha Brukman
01841234e8 * Fix saving LR in function prologue 
* Adjust epilogue restore sequence to match the PowerPC documentation

llvm-svn: 14480
 2004-06-29 17:14:42 +00:00
Misha Brukman
981cf1f1b4 Convert tabs to spaces. 
llvm-svn: 14412
 2004-06-25 18:45:07 +00:00
Misha Brukman
91ffab9644 Use DEBUG() guard for printing out debug info. 
llvm-svn: 14386
 2004-06-24 23:54:05 +00:00
Misha Brukman
5d0be46fb7 * Tabs to spaces 
* Send an error message to std::cerr before abort()ing

llvm-svn: 14381
 2004-06-24 23:19:36 +00:00
Misha Brukman
ae07b686fa Spell out `NoFramePointerElim'. 
llvm-svn: 14300
 2004-06-21 21:18:48 +00:00
Misha Brukman
a2ac4e4345 Use the common `NoFPElim' setting instead of our own. 
llvm-svn: 14298
 2004-06-21 21:10:24 +00:00
Misha Brukman
76b4796e7c Type::getPrimitiveID() -> getTypeID() 
llvm-svn: 14287
 2004-06-21 17:19:08 +00:00
Misha Brukman
269034c151 Initial revision 
llvm-svn: 14283
 2004-06-21 16:55:25 +00:00