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18090 Commits

Author SHA1 Message Date
Chris Lattner 747eee2707 Don't make this require loopsimplify. It works BETTER with loop simplify 
but should not require it.

llvm-svn: 21123
 2005-04-06 21:45:00 +00:00
Nate Begeman b067492535 Teach ExpandShift how to handle shifts by a constant. This allows targets 
like PowerPC to codegen long shifts in many fewer instructions.

llvm-svn: 21122
 2005-04-06 21:13:14 +00:00
Andrew Lenharth df3256aa7f fix copy/paste errors, and add imm support to SxADDQ and SxSUBQ 
llvm-svn: 21121
 2005-04-06 20:59:59 +00:00
Chris Lattner bd32728a98 Fix SingleSource/Regression/C/2005-05-06-LongLongSignedShift.c, we were not 
properly sign extending the top of the result of a 64-bit shift right by
a constant > 32.

llvm-svn: 21120
 2005-04-06 20:59:35 +00:00
Andrew Lenharth 249bf7bee4 simplified 
llvm-svn: 21119
 2005-04-06 20:59:03 +00:00
Andrew Lenharth 99edcfe3f8 added first alpha codegen regression test 
llvm-svn: 21117
 2005-04-06 20:39:17 +00:00
Andrew Lenharth 1d4747c302 Added Nate's div by constant stuff, also scaled operations! 
llvm-svn: 21116
 2005-04-06 20:25:34 +00:00
Chris Lattner 70b8b96d6c Fix a namespace issue, reported by Vladimir Merzliakov! 
llvm-svn: 21115
 2005-04-06 19:45:39 +00:00
Duraid Madina c36b6c3b1a steal sampo's div-by-constant-power-of-2 stuff 
thanks sampo!!

llvm-svn: 21113
 2005-04-06 09:55:17 +00:00
Duraid Madina 03c530786c add fms instruction 
llvm-svn: 21112
 2005-04-06 09:54:09 +00:00
Nate Begeman 39ef2f1d43 Fixed version of optimized integer divide is now fixed. Calculate the 
quotient, not the remainder.  Also, make sure to remove the old div operand
from the ExprMap and let SelectExpr insert the new one.

llvm-svn: 21111
 2005-04-06 06:44:57 +00:00
Duraid Madina c0e9adf3cc lie a bit and say that r1/r12 (GP/SP) _aren't_ callee-save, as we take 
care of this ourselves

llvm-svn: 21110
 2005-04-06 06:18:36 +00:00
Duraid Madina df0ecbd4cc make sure 'special' registers don't get allocated 
llvm-svn: 21109
 2005-04-06 06:17:54 +00:00
Chris Lattner 9953d17a44 document these nodes, as they are nonobvious 
llvm-svn: 21108
 2005-04-06 04:21:29 +00:00
Chris Lattner 4fbb4af5d1 Add (untested) support for MULHS and MULHU. 
llvm-svn: 21107
 2005-04-06 04:21:07 +00:00
Chris Lattner c21db6b15c add signed versions of the extra precision multiplies 
llvm-svn: 21106
 2005-04-06 04:19:22 +00:00
Nate Begeman dd397119b0 Turn off the div -> mul optimization until it works correctly 100% of the 
time.

llvm-svn: 21105
 2005-04-06 03:36:33 +00:00
Nate Begeman 4164c4baac Add support for MULHS and MULHU nodes 
Have LegalizeDAG handle SREM and UREM for us
Codegen SDIV and UDIV by constant as a multiply by magic constant instead
of integer divide, which is very slow.

llvm-svn: 21104
 2005-04-06 00:25:27 +00:00
Nate Begeman 20b7d2a36f Expand SREM and UREM for targets that claim not to have them, like PowerPC 
llvm-svn: 21103
 2005-04-06 00:23:54 +00:00
Nate Begeman 55e8625c69 Add MULHU and MULHS nodes for the high part of an (un)signed 32x32=64b 
multiply.

llvm-svn: 21102
 2005-04-05 22:36:56 +00:00
Andrew Lenharth 43f78bc2da added lowerargs support for varargs 
llvm-svn: 21101
 2005-04-05 20:51:46 +00:00
Nate Begeman 524417357c Behold, rlwinm with certain immediate arguments is printed as the much more 
readable slwi or srwi (shift left/right word immediate).

llvm-svn: 21099
 2005-04-05 18:19:50 +00:00
Nate Begeman a188b698a2 Fix cut & paste errors (32->64), and codegen float->int more optimally. 
llvm-svn: 21098
 2005-04-05 17:32:30 +00:00
Tanya Lattner 8d64e9a90d Updated to use dep analyzer. 
llvm-svn: 21097
 2005-04-05 16:36:44 +00:00
Nate Begeman 9203e169a7 Remove 64 bit simple ISel, it never worked correctly 
Add initial (buggy) implementation of 64 bit pattern ISel

llvm-svn: 21096
 2005-04-05 08:51:15 +00:00
Nate Begeman 4bde071216 Back out the previous change to SelectBranchCC, since there are cases it 
could miscompile.  A correct solution will be found in the near future.

llvm-svn: 21095
 2005-04-05 04:32:16 +00:00
Nate Begeman 9049e4beec Rename canUseAsImmediateForOpcode to getImmediateForOpcode to better 
indicate that it is not a boolean function.
Properly emit the pseudo instruction for conditional branch, so that we
  can fix up conditional branches whose displacements are too large.
Reserve the right amount of opcode space for said pseudo instructions.

llvm-svn: 21094
 2005-04-05 04:22:58 +00:00
Chris Lattner 7e0a534cba do not crash when using -debug 
llvm-svn: 21092
 2005-04-05 01:12:03 +00:00
Nate Begeman d6933f5078 Implement SDIV by power of 2 as srawi/addze rather than load imm, divw 
llvm-svn: 21091
 2005-04-05 00:15:08 +00:00
Nate Begeman 1d5d767a09 Pattern match fp mul-add, mul-sub, neg-mul-add, and neg-mul-sub 
llvm-svn: 21090
 2005-04-04 23:40:36 +00:00
Nate Begeman d96350095c Add support for multiply-add, multiply-sub, and their negated versions 
llvm-svn: 21089
 2005-04-04 23:01:51 +00:00
Chris Lattner b919b21777 do not dereference an extra layer of pointers to determine if an external 
call can modify a memory location.  This fixes
test/Regression/Analysis/Andersens/modreftest.ll

llvm-svn: 21088
 2005-04-04 22:23:21 +00:00
Chris Lattner 0933766e2b new testcase 
llvm-svn: 21087
 2005-04-04 22:22:30 +00:00
Nate Begeman 1194531057 Make sure that arg regs used by the call instruction are marked as such, so 
that regalloc doesn't cleverly reuse early arg regs loading later arg regs.
This fixes almost all outstanding failures in the pattern isel.

llvm-svn: 21086
 2005-04-04 22:17:48 +00:00
Nate Begeman c7186025de Remove unnecessary register copy now that regalloc is fixed 
llvm-svn: 21085
 2005-04-04 21:48:13 +00:00
Chris Lattner 6a6056e93d Make sure to notice that explicit physregs are used in the function 
llvm-svn: 21084
 2005-04-04 21:35:34 +00:00
Nate Begeman d753765460 i1 loads should also be from the low byte of the argument word. 
llvm-svn: 21077
 2005-04-04 09:09:00 +00:00
Nate Begeman 1ce4839890 Fix i64 return, fix CopyFromReg 
llvm-svn: 21076
 2005-04-04 06:52:38 +00:00
Duraid Madina 9935f44fb8 fix SREM/UREM, which gave incorrect results for x%y if x was zero. This is 
an ugly hack, but it seems to work. I should fix this properly and add a test
as well.

fixes multisource/obsequi (maybe others)

llvm-svn: 21075
 2005-04-04 05:05:52 +00:00
Duraid Madina dbc810022b add implicit use op 
llvm-svn: 21074
 2005-04-04 04:50:57 +00:00
Nate Begeman cc00a7c42d Handle expanding arguments to ISD::TRUNCATE. This happens on PowerPC when 
you have something like i16 = truncate i64.  This fixes Regression/C/casts

llvm-svn: 21073
 2005-04-04 00:57:08 +00:00
Chris Lattner 4784489de2 Fix sign_extend and zero_extend of promoted value types to expanded value 
types.  This occurs when casting short to long on PPC for example.

llvm-svn: 21072
 2005-04-03 23:41:52 +00:00
Nate Begeman 629cdaea39 Full varargs support. All of UnitTests now passes 
llvm-svn: 21070
 2005-04-03 23:11:17 +00:00
Nate Begeman 7a3e929efc Pass the correct value for the chain to the store 
llvm-svn: 21066
 2005-04-03 22:22:56 +00:00
Nate Begeman f6dc43bd46 Fix SHL_PARTS 
Start implementation of integer varargs

llvm-svn: 21065
 2005-04-03 22:13:27 +00:00
Andrew Lenharth 79e727e8a7 is this simpler? I think it is simpler. 
llvm-svn: 21064
 2005-04-03 20:35:21 +00:00
Andrew Lenharth 7ce5740de9 fix 101 regressions 
llvm-svn: 21063
 2005-04-03 18:24:50 +00:00
Duraid Madina 2f472ecb11 a wise man once said: 
"!!!!!!!! IF YOU CHANGE SPACES TO TABS, YOU WILL BE KILLED!!!!!!"

llvm-svn: 21062
 2005-04-03 14:57:35 +00:00
Duraid Madina 6c9afaead4 .bss is no problem here. 
llvm-svn: 21061
 2005-04-03 14:52:01 +00:00
Nate Begeman 34cc5b329f Keeping up with the Joneses. 
Implement not, nor, nand, and eqv

llvm-svn: 21060
 2005-04-03 11:20:20 +00:00