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4ce5ce25e8
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153 Commits

Author SHA1 Message Date
Misha Brukman
4ce5ce25e8 Branch selection support implemented by Nate Begeman for long branches. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15288 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:43:04 +00:00
Misha Brukman
ab96790f2c Correctly print out long branches, assert on finding pseudo instr COND_BRANCH 
Patch by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15286 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:40:39 +00:00
Misha Brukman
bd2c870539 Run the branch selection pass right before the asm printer. 
Patch by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15285 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:39:34 +00:00
Misha Brukman
596c23134b Remove empty unused method processFunctionBeforeFrameFinalized() 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15284 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:38:40 +00:00
Misha Brukman
f228fa0580 Add COND_BRANCH pseudo instruction, patch by Nate Begeman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15283 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:35:54 +00:00
Misha Brukman
fa20a6dfd7 Build COND_BRANCHes which may become long or short, decided by a later pass. 
Patch by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15282 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:35:23 +00:00
Misha Brukman
8aebe9f96c Moved definition of invertPPCBranchOpcode() into PowerPCInstrInfo class. 
Patch by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15281 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:34:11 +00:00
Misha Brukman
999d9cfde5 Add PowerPCBranchSelector to discover which are `long' branches. 
Contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15280 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 18:33:06 +00:00
Misha Brukman
c91bc30436 Fixed saving/restoring LR unconditionally, only done as necessary. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15275 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:17:48 +00:00
Misha Brukman
9a771d55fe 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'.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15274 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:17:18 +00:00
Misha Brukman
e862f306fb LR is a 32-bit int reg 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15273 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:15:32 +00:00
Misha Brukman
53f567817c MovePCtoLR (which is `bl' in disguise) modifies LR implicitly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15272 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:15:05 +00:00
Misha Brukman
08cc7b30bb Register LR is callee-saved 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15271 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:14:34 +00:00
Misha Brukman
435c785803 Add IMPLICIT_DEF of LR for branch-and-link instrs (calls and global accesses) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15270 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-27 17:13:58 +00:00
Misha Brukman
ab640a5728 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15245 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 22:00:26 +00:00
Misha Brukman
3ada3e3f82 ADDI can take several forms, including: 
addi r1, r2, 0
  addi r1, <frame index #n>, 0

so we must check for the second parameter being a register for this instruction
to be considered a reg-to-reg copy.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15244 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 21:50:38 +00:00
Misha Brukman
8790d47453 assert() on MachineInstr properties instead of checking them dynamically 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15243 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 21:35:58 +00:00
Misha Brukman
774a297c83 * Recognize `addi r1, r2, 0' a move instruction 
* List formats of instructions currently recognized as moves


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15242 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 21:29:00 +00:00
Misha Brukman
b097f216b0 * Rewrote casts 
* Implemented GEP folding
* Dynamically output global address stuff once per function
* Fix casting fp<->short/byte

Patch contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15237 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 18:13:24 +00:00
Misha Brukman
cf8d244394 Increment the label number in runOnFunction() rather than while printing out 
some instruction.  Patch by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15236 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 16:28:33 +00:00
Misha Brukman
bb966a4a59 More notes on bugs, unimplemented features, and suggested code improvements. 
Written by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15235 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 16:23:55 +00:00
Misha Brukman
3c616b45e7 Fix subtracting values > 2^15 in the prologue/epilogue, by Nate Begeman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15234 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-26 16:22:52 +00:00
Misha Brukman
1be339ac4c Running list of bugs, unimplemented features, currently broken tests, until we 
have a nightly tester set up for PowerPC.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15147 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 22:37:22 +00:00
Misha Brukman
4722544855 Eliminate spurious empty space; make code easier to page through. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15146 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 22:35:49 +00:00
Misha Brukman
1245c35935 Simplify boolean test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15145 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 21:43:26 +00:00
Misha Brukman
b160d1f9f7 Implement casting a floating point to 32-bit unsigned value 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15143 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 20:32:59 +00:00
Misha Brukman
e2eceb5c73 * Codegen of GEPs dramatically improved by folding multiplies and adds 
* Function pointers implemented correctly using appropriate stubs

Contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15133 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 16:08:20 +00:00
Misha Brukman
9accb24c89 Bool alignment on MacOSX/PowerPC is 4 bytes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15122 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 01:11:46 +00:00
Misha Brukman
4c14f33844 * Change class of BoolTy back to cInt 
* Fix indentation back to 2 spaces


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15121 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-23 01:11:19 +00:00
Misha Brukman
2ed17cadb4 * Change bool from cInt to cByte (for now) 
* Don't allow negative immediates to users of unsigned immediates
* Fix long compares
* Support <const int>, op as a potential immediate candidate
* Fix sign extension of short and byte loads
* Fix and improve integer casts
* Fix passing of doubles as vararg functions

Patch contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15109 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-22 15:58:04 +00:00
Misha Brukman
a31f1f7cb2 * Add the lost fix to define the second reg of a 2-reg representation of longs 
* Fix opcode RLWNM -> RLWINM since it uses an immediate const shift value


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15087 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:30:18 +00:00
Misha Brukman
17a9000ac8 * Speed up canUseAsImmediateForOpcode() by comparing Operand before 
dyn_cast<>ing and checking Constant's value
* Convert tabs to spaces


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15086 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:22:06 +00:00
Misha Brukman
97a296f743 * Fix printing of signed immediate values (Nate Begeman) 
* Fix printing of `zeroinitializer'
* Fix printing of `linkonce' globals, complete with stubs


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15084 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:11:11 +00:00
Misha Brukman
1013ef5228 * Fix printing of signed immediate values 
* Generation of opcodes that take 16 bit immediates
* Rewrote multiply to be correct for 64 bit values
* Rewrote all the long handling to be correct for PowerPC
* Fix visitSelectInst() to define the upper register of the pair of regs
  representing a long value

Patch contributed by Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15083 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 20:09:08 +00:00
Misha Brukman
e0380e0c42 Use addSImm() instead of addImm() for stack offsets, which may be negative. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15081 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 19:36:57 +00:00
Misha Brukman
53d9a48855 Add SUBI instruction 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15077 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-21 15:53:04 +00:00
Misha Brukman
cd2273f4a7 Shorts are aligned to 2 bytes, bools to 1 byte (in structs). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15048 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 20:59:57 +00:00
Misha Brukman
bf417a6d46 Treat external variables similarly to those with weak linkage: load indirect. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15047 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 20:43:05 +00:00
Misha Brukman
86ddcf9d4f Differentiate between global and weak symbol loads 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15037 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 15:52:25 +00:00
Misha Brukman
ec6319a00c * Differentiate between global and weak symbol loads 
* Fix functions that take more than 32 bytes of args
* Alignment of doubles in structs is 4 bytes, not 8
* Fix passing long args: rN = hi, rN+1 = lo
* Rewrite signed divide
* Rewrite Intrinsic::returnaddress

Patch courtesy of Nate Begeman.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15036 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 15:51:37 +00:00
Misha Brukman
e48178e8a6 Differentiate between global and weak symbol loads 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15035 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 15:45:27 +00:00
Misha Brukman
5c4544160f Double alignment in structs is 4 bytes, not 8. Patch by Nate Begeman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15034 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 15:43:25 +00:00
Misha Brukman
d43b9fd1ae Fix stack frame layout in prologue/epilogue. Patch courtesy of Nate Begeman. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15026 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 02:23:09 +00:00
Misha Brukman
ba1c1da36a Move handing of GlobalValues from getReg() to copyConstantToRegister(), this 
will avoid extra register-to-register copies.  Thanks to Chris for the idea.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15019 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 00:59:38 +00:00
Misha Brukman
61114619bc * Fn args passed in registers are now recorded as used by the call instruction 
`-> asm printer updated to not print out those registers with the call instr

All of Shootout tests now work.  Great thanks to Nate Begeman for the patch!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15015 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 00:42:19 +00:00
Misha Brukman
7e898c3e04 * cFP class split into cFP32 and cFP64 
* Fn args passed in registers are now recorded as used by the call instruction
`-> asm printer updated to not print out those registers with the call instr
* Stack frame layout in prolog/epilog fixed, spills and vararg fns now work
* float/double to signed int codegen now correct
* various single precision float codegen bugs fixed
* const integer multiply codegen fixed
* select and setcc blocks inserted into the correct place in machine CFG
* load of integer constant code optimized

All of Shootout tests now work.  Great thanks to Nate Begeman for the patch!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15014 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-20 00:41:46 +00:00
Chris Lattner
a51e4f6301 Fix infinite loop 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14971 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 18:45:01 +00:00
Chris Lattner
67910e1eb0 CPR Fixes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14961 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-18 07:29:35 +00:00
Misha Brukman
a57b76fece We don't really need to #include IPO.h into this file. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14911 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-17 18:37:46 +00:00
Misha Brukman
bebde759e5 * Use LI(S) to copy constants into registers intead of ADDI(S) as the latter is 
a funky way to "use" R0 for a 0-valued operand
* Add IMPLICIT_DEFs for incoming function arguments via registers to help the
  register allocator not clobber those registers
* Implement comparisons with longs
* Teach emitSelectOperation() to fold the SetCC operation

Patch contributed by Nate Begeman


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14901 91177308-0d34-0410-b5e6-96231b3b80d8
 2004-07-16 21:06:24 +00:00