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51c3e53eb7
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352 Commits

Author SHA1 Message Date
Evan Cheng
51c3e53eb7 Only safe to use a call-clobbered or spilled callee-saved register as scratch register. 
llvm-svn: 35010
 2007-03-07 20:30:36 +00:00
Anton Korobeynikov
85d6c1ebad Refactoring of formal parameter flags. Enable properly use of 
zext/sext/aext stuff.

llvm-svn: 35008
 2007-03-07 16:25:09 +00:00
Evan Cheng
493960579f ARM always use register scavenger. No longer reserves R12. 
llvm-svn: 34999
 2007-03-07 02:46:23 +00:00
Evan Cheng
4e01b11512 Fix some brittle code. Watch out for cases where register scavenger is pointing to deleted instructions. 
llvm-svn: 34998
 2007-03-07 02:38:05 +00:00
Evan Cheng
9839628fd1 Fix one more Thumb eliminateFrameIndex bug. 
llvm-svn: 34990
 2007-03-07 00:12:18 +00:00
Evan Cheng
63ffd3e17f Register scavenging is now on by default for ARM. 
llvm-svn: 34987
 2007-03-06 22:02:53 +00:00
Evan Cheng
6453ad00d2 Make load / store optimizer use register scavenger. 
llvm-svn: 34986
 2007-03-06 21:59:20 +00:00
Evan Cheng
228403bfcb Code clean up. Prepare to use register scavenger. 
llvm-svn: 34976
 2007-03-06 18:02:41 +00:00
Evan Cheng
7c90fb2d67 Scavenge a register using the register scavenger when needed. 
llvm-svn: 34966
 2007-03-06 10:03:56 +00:00
Anton Korobeynikov
6da6c8c48b Use new SDIselParamAttr enumeration. This removes "magick" constants 
from formal attributes' flags processing.

llvm-svn: 34963
 2007-03-06 08:12:33 +00:00
Lauro Ramos Venancio
3f855f6a54 Use init_array/fini_array sections for static contructors/destructors when the ABI is AAPCS. 
Fix SingleSource/Regression/C/ConstructorDestructorAttributes test on arm-linux-gnueabi.

llvm-svn: 34931
 2007-03-05 17:59:58 +00:00
Dale Johannesen
a6003a9eb6 eliminate unnecessary reset of SP in epilog on darwin 
llvm-svn: 34824
 2007-03-02 01:17:17 +00:00
Evan Cheng
07dcde8ba2 Use a spilled free callee-saved register as scratch register. 
llvm-svn: 34785
 2007-03-01 08:57:52 +00:00
Evan Cheng
8d3d4155e5 - Track which callee-saved registers are spilled. 
- Some code clean up.

llvm-svn: 34783
 2007-03-01 08:26:31 +00:00
Evan Cheng
f771a323c2 Switch from std::vector<bool> to BitVector. 
llvm-svn: 34781
 2007-03-01 07:52:44 +00:00
Bill Wendling
2aabf75e82 Get rid of verboten <iostream> include. 
llvm-svn: 34777
 2007-03-01 06:05:39 +00:00
Dale Johannesen
f38e3d7085 Changes requested in review of last pass. Also pulled isThumb into a 
member, instead of resetting in every function that uses it.

llvm-svn: 34764
 2007-02-28 23:20:38 +00:00
Evan Cheng
5dc0ece7cb Doh. ARM::PC is obvious a reserved register. 
llvm-svn: 34763
 2007-02-28 23:12:34 +00:00
Dale Johannesen
5ec68034ee Add intelligence about where to break large blocks. 
llvm-svn: 34755
 2007-02-28 18:41:23 +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
cfb0f8cfc6 Temporary: make R12 available in ARM mode if RegScavenger is being used. 
llvm-svn: 34709
 2007-02-28 00:22:44 +00:00
Evan Cheng
fa23d8e51f Start making use of RegScavenger. 
llvm-svn: 34708
 2007-02-28 00:21:58 +00:00
Evan Cheng
116f97f2c7 PEI now passes a RegScavenger ptr to eliminateFrameIndex. 
llvm-svn: 34707
 2007-02-28 00:21:17 +00:00
Evan Cheng
4357509984 Minor tweak. Allocate r0 to r3 in reverse order, r3 is least likely to be livein to a function. 
llvm-svn: 34701
 2007-02-27 23:03:55 +00:00
Evan Cheng
a19dd6f388 Let MRegisterInfo now owns RegScavenger; eliminateFrameIndex must preserve register kill info. 
llvm-svn: 34692
 2007-02-27 21:12:35 +00:00
Dale Johannesen
f6f34ec2e0 cosmetic changes from review of last patch. obvious 
llvm-svn: 34598
 2007-02-25 18:31:31 +00:00
Dale Johannesen
6e366a1006 remove crediting of Evan Cheng and me. 
llvm-svn: 34568
 2007-02-25 01:42:36 +00:00
Dale Johannesen
ccecc12da5 Removed WaterListOffset, inserted BBOffsets. Remove TODO item about this 
from README.
When no water available, use end of block if in range.  (More to do here.)

llvm-svn: 34563
 2007-02-25 00:47:03 +00:00
Lauro Ramos Venancio
19040a3f0d bugfix: SP wasn't updated for varargs when frame pointer was eliminated. 
llvm-svn: 34537
 2007-02-23 21:53:48 +00:00
Lauro Ramos Venancio
7c2f17b629 Fix stack alignment in functions with varargs. 
llvm-svn: 34532
 2007-02-23 20:32:57 +00:00
Dale Johannesen
544968d665 rewrite of constant islands 
llvm-svn: 34523
 2007-02-23 05:02:36 +00:00
Evan Cheng
2d4b1cb0ca Added -march=thumb; removed -enable-thumb. 
llvm-svn: 34521
 2007-02-23 03:14:31 +00:00
Evan Cheng
bd3219f5bf Add option to turn on register scavenger; By default, spills kills the register being stored. 
llvm-svn: 34514
 2007-02-23 01:09:11 +00:00
Jim Laskey
b57ee1fc37 Simplify lowering and selection of exception ops. 
llvm-svn: 34488
 2007-02-22 14:56:36 +00:00
Jim Laskey
6a937ad320 Support to provide exception and selector registers. 
llvm-svn: 34482
 2007-02-21 22:54:50 +00:00
Evan Cheng
e4ab9c032b Re-apply my liveintervalanalysis changes. Now with PR1207 fixes. 
llvm-svn: 34428
 2007-02-19 21:49:54 +00:00
Reid Spencer
b27fcf3482 For PR1207: 
Revert patches that caused the problem. Evan, please investigate and reapply
when you've discovered the problem.

llvm-svn: 34399
 2007-02-19 03:20:00 +00:00
Evan Cheng
8c2508f1ac Added getReservedRegs(). 
llvm-svn: 34376
 2007-02-17 11:06:00 +00:00
Chris Lattner
5cece73ec8 Generalize TargetData strings, to support more interesting forms of data. 
Patch by Scott Michel.

llvm-svn: 34266
 2007-02-14 05:52:17 +00:00
Lauro Ramos Venancio
81f86314e6 Add space between // and the comment. 
llvm-svn: 34246
 2007-02-13 20:06:15 +00:00
Lauro Ramos Venancio
ff9f78e230 Add ABI information to ARM subtarget. 
llvm-svn: 34245
 2007-02-13 19:52:28 +00:00
Lauro Ramos Venancio
02ba8f20e3 According to ARM EABI, 8-bytes function arguments must be 8-bytes aligned. 
llvm-svn: 34241
 2007-02-13 14:07:13 +00:00
Evan Cheng
af3b119b29 These vectors are frequently large. Use std::vector instead. 
llvm-svn: 34109
 2007-02-09 23:59:14 +00:00
Evan Cheng
5e8eb0c198 Add reference counting to constantpool entries. Delete the unused ones. 
llvm-svn: 34105
 2007-02-09 20:54:44 +00:00
Evan Cheng
dc15bc54a4 isLowRegister() expects input is a physical register. 
llvm-svn: 34013
 2007-02-07 21:44:33 +00:00
Evan Cheng
03ffd4a6d5 Rename. 
llvm-svn: 34011
 2007-02-07 21:24:09 +00:00
Evan Cheng
2bbe03a4df If sp offset will be materialized in a register. Clear the offset field of str / ldr. 
llvm-svn: 34010
 2007-02-07 21:19:58 +00:00
Evan Cheng
fe7242e9bb Get rid of references to iostream. 
llvm-svn: 34009
 2007-02-07 21:18:32 +00:00
Evan Cheng
808cf2b6a1 New entry. 
llvm-svn: 34000
 2007-02-07 09:22:15 +00:00
Evan Cheng
d5921e8a32 In thumb mode, R3 is reserved, but it can be live in to the function. If 
that is the case, whenever we use it as a scratch register, save it to R12
first and then restore it after the use.
This is a temporary and truly horrible workaround!

llvm-svn: 33999
 2007-02-07 09:17:36 +00:00