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496 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
7a2dca07a8 Add a TRI::getLargestLegalSuperClass hook to provide an upper limit on register class inflation. 
The hook will be used by the register allocator when recomputing register
classes after removing constraints.

Thumb1 code doesn't allow anything larger than tGPR, and x86 needs to ensure
that the spill size doesn't change.

llvm-svn: 130228
 2011-04-26 18:52:33 +00:00
Chris Lattner
0304b82f80 Fix a ton of comment typos found by codespell. Patch by 
Luis Felipe Strano Moraes!

llvm-svn: 129558
 2011-04-15 05:18:47 +00:00
Evan Cheng
a3a7a7e364 Re-commit 127368 and 127371. They are exonerated. 
llvm-svn: 127380
 2011-03-10 00:16:32 +00:00
Evan Cheng
d7a2008a55 Revert 127368 and 127371 for now. 
llvm-svn: 127376
 2011-03-09 23:53:17 +00:00
Evan Cheng
b717770dfe Change the definition of TargetRegisterInfo::getCrossCopyRegClass to be more 
flexible.

If it returns a register class that's different from the input, then that's the
register class used for cross-register class copies.
If it returns a register class that's the same as the input, then no cross-
register class copies are needed (normal copies would do).
If it returns null, then it's not at all possible to copy registers of the
specified register class.

llvm-svn: 127368
 2011-03-09 22:47:38 +00:00
Cameron Zwarich
a1920d7f51 Move getRegPressureLimit() from TargetLoweringInfo to TargetRegisterInfo. 
llvm-svn: 127175
 2011-03-07 21:56:36 +00:00
NAKAMURA Takumi
8ace7260cc Target/X86: Tweak win64's tailcall. 
llvm-svn: 124272
 2011-01-26 02:04:09 +00:00
NAKAMURA Takumi
a3d094f248 lib/Target/X86/X86RegisterInfo.cpp: Fix whitespace. 
llvm-svn: 124268
 2011-01-26 01:28:06 +00:00
NAKAMURA Takumi
1557668f7b lib/Target/X86/X86RegisterInfo.cpp: Fix a typo in comment. 
llvm-svn: 124267
 2011-01-26 01:27:58 +00:00
Anton Korobeynikov
cf5967630b Rename TargetFrameInfo into TargetFrameLowering. Also, put couple of FIXMEs and fixes here and there. 
llvm-svn: 123170
 2011-01-10 12:39:04 +00:00
Jakob Stoklund Olesen
e2e0850651 Fix the last virtual register enumerations. 
llvm-svn: 123102
 2011-01-08 23:11:11 +00:00
Evan Cheng
ea28d16e36 Code clean up. No functionality change. 
llvm-svn: 122528
 2010-12-23 23:54:17 +00:00
Anton Korobeynikov
598465c605 Move more PEI-related hooks to TFI 
llvm-svn: 120229
 2010-11-27 23:05:25 +00:00
Anton Korobeynikov
ff8c52bd51 Move some more hooks to TargetFrameInfo 
llvm-svn: 119904
 2010-11-20 15:59:32 +00:00
Anton Korobeynikov
ce676f96e1 Move getInitialFrameState() to TargetFrameInfo 
llvm-svn: 119754
 2010-11-18 23:25:52 +00:00
Anton Korobeynikov
269e7d3be1 Move hasFP() and few related hooks to TargetFrameInfo. 
llvm-svn: 119740
 2010-11-18 21:19:35 +00:00
Anton Korobeynikov
76c52dcf44 First step of huge frame-related refactoring: move emit{Prologue,Epilogue} out of TargetRegisterInfo to TargetFrameInfo, which is definitely much better suitable place 
llvm-svn: 119097
 2010-11-15 00:06:54 +00:00
Jakob Stoklund Olesen
7f38b44415 Fix obvious mistake pointed out by Michael Spencer. 
llvm-svn: 115952
 2010-10-07 18:47:10 +00:00
Jakob Stoklund Olesen
8c1eafb4cb Properly handle GR32_NOSP in X86RegisterInfo::getMatchingSuperRegClass. 
This function looks like it is about ready to be generated by TebleGen.

llvm-svn: 115876
 2010-10-06 23:56:46 +00:00
Anton Korobeynikov
31b3b2ca41 Properly emit stack probe on win64 (for non-mingw targets). 
Based on the patch by Cameron Esfahani!

llvm-svn: 115479
 2010-10-03 22:02:38 +00:00
Cameron Esfahani
662193bddc Fix PR8201: Update the code to call via X86::CALL64pcrel32 in the 64-bit case. 
llvm-svn: 114597
 2010-09-22 22:35:21 +00:00
Chris Lattner
1ff3935290 fix rdar://8456412 - llvm-mc crash in encoder on "mov %rdx, %cr8" 
Teaching the code generator about CR8-15, how to rex them up, etc.

llvm-svn: 114533
 2010-09-22 05:29:50 +00:00
Anton Korobeynikov
32cecc0ecc Properly emit __chkstk call instead of __alloca on non-mingw windows targets. 
Patch by Cameron Esfahani!

llvm-svn: 112902
 2010-09-02 23:03:46 +00:00
Anton Korobeynikov
a65910e5ca Revert win64 changes. They seem to be incomplete 
llvm-svn: 112885
 2010-09-02 22:31:32 +00:00
Anton Korobeynikov
339ab60a5b Properly allocate win64 shadow reg area. 
Patch by Jan Sjodin!

llvm-svn: 112875
 2010-09-02 22:16:28 +00:00
Jim Grosbach
2b81a07dc7 Simplify eliminateFrameIndex() interface back down now that PEI doesn't need 
to try to re-use scavenged frame index reference registers. rdar://8277890

llvm-svn: 112241
 2010-08-26 23:32:16 +00:00
Anton Korobeynikov
1544f79e36 Fix nasty mingw32 bug, which e.g. prevented llvm-gcc bootstrap there. 
Mark _alloca call as clobberring EFLAGS, otherwise some DCE might remove
other flags-clobberring stuff (e.g. cmp instructions) occuring after
_alloca call.

llvm-svn: 112034
 2010-08-25 07:50:11 +00:00
Owen Anderson
f2fea95f2f Reapply r110396, with fixes to appease the Linux buildbot gods. 
llvm-svn: 110460
 2010-08-06 18:33:48 +00:00
Owen Anderson
aadd8a89ca Revert r110396 to fix buildbots. 
llvm-svn: 110410
 2010-08-06 00:23:35 +00:00
Eric Christopher
cf17d8dfa7 Add an option to always emit realignment code for a particular module. 
llvm-svn: 110404
 2010-08-05 23:57:43 +00:00
Owen Anderson
b9762c07cb Don't use PassInfo* as a type identifier for passes. Instead, use the address of the static 
ID member as the sole unique type identifier.  Clean up APIs related to this change.

llvm-svn: 110396
 2010-08-05 23:42:04 +00:00
Bruno Cardoso Lopes
632295a03c Support x86 "eiz" and "riz" pseudo index registers in the assembler. 
llvm-svn: 109295
 2010-07-24 00:06:39 +00:00
Eric Christopher
ff47f8d94f Constify some arguments. 
llvm-svn: 108812
 2010-07-20 06:52:21 +00:00
Eric Christopher
00b8fa89c8 Remove unnecessary check that was subsumed into canRealignStack. 
llvm-svn: 108588
 2010-07-17 00:33:04 +00:00
Eric Christopher
cfd5cd156c Make comment a bit more clear as well as return statement since 
needsStackRealignment is currently checking the can conditions as well.

llvm-svn: 108581
 2010-07-17 00:25:41 +00:00
Bill Wendling
e2833a21c2 Rename DBG_LABEL PROLOG_LABEL, because it's only used during prolog emission and 
thus is a much more meaningful name.

llvm-svn: 108563
 2010-07-16 22:20:36 +00:00
Bruno Cardoso Lopes
3676e24b67 Start the support for AVX instructions with 256-bit %ymm registers. A couple of 
notes:
- The instructions are being added with dummy placeholder patterns using some 256
  specifiers, this is not meant to work now, but since there are some multiclasses
  generic enough to accept them,  when we go for codegen, the stuff will be already
  there.
- Add VEX encoding bits to support YMM
- Add MOVUPS and MOVAPS in the first round
- Use "Y" as suffix for those Instructions: MOVUPSYrr, ...
- All AVX instructions in X86InstrSSE.td will move soon to a new X86InstrAVX
  file.

llvm-svn: 107996
 2010-07-09 18:27:43 +00:00
Chris Lattner
49ac65543c Change LEA to have 5 operands for its memory operand, just 
like all other instructions, even though a segment is not
allowed.  This resolves a bunch of gross hacks in the 
encoder and makes LEA more consistent with the rest of the
instruction set.

No functionality change.

llvm-svn: 107934
 2010-07-08 23:46:44 +00:00
Evan Cheng
47f3a2db40 Remove isSS argument from CreateFixedObject. Fixed objects cannot be spill slots so it's always false. 
llvm-svn: 107550
 2010-07-03 00:40:23 +00:00
Dale Johannesen
4264f09fe2 Reapply 105986 with fix for bug pointed out by Jakob: 
flag argument to addReg is not the same format as flags attached
to MachineOperand, although both have the same info.  I don't
think this actually mattered; the bootstrap failure did not
reproduce on the next run anyway.

llvm-svn: 106049
 2010-06-15 21:36:43 +00:00
Dale Johannesen
686452222c Revert 105986; looks like I'd better try bootstrapping. 
llvm-svn: 105988
 2010-06-15 04:55:06 +00:00
Dale Johannesen
16d277a32b The form of BuildMI used for TAILJMPr was changing the register 
containing the target address, an input, into an output.  I don't
think this actually broke anything on x86 (it does on ARM), but
it's wrong.

llvm-svn: 105986
 2010-06-15 03:13:49 +00:00
Rafael Espindola
1fa715f6d3 Remove unused function. 
llvm-svn: 105325
 2010-06-02 15:44:20 +00:00
Kevin Enderby
3db5d4603e Fix the use of x86 control and debug registers so that the assertion failure in 
getX86RegNum() does not happen.  Patch by Shantonu Sen!

llvm-svn: 104994
 2010-05-28 19:01:27 +00:00
Kevin Enderby
7eae1aeb51 Fix the x86 move to/from segment register instructions. 
llvm-svn: 104731
 2010-05-26 20:10:45 +00:00
Jakob Stoklund Olesen
1fcfb4a867 Separate unrelated cases that once shared a numeric value 
llvm-svn: 104629
 2010-05-25 19:49:40 +00:00
Jakob Stoklund Olesen
6e7961be11 Ignore NumberHack and give each SubRegIndex instance a unique enum value instead. 
This passes lit tests, but I'll give it a go through the buildbots to smoke out
any remaining places that depend on the old SubRegIndex numbering.

Then I'll remove NumberHack entirely.

llvm-svn: 104615
 2010-05-25 17:21:04 +00:00
Jakob Stoklund Olesen
201408751f Use enums instead of literals for X86 subregisters. 
The cases in getMatchingSuperRegClass cannot be broken up until the enums have
unique values.

llvm-svn: 104611
 2010-05-25 17:04:16 +00:00
Dan Gohman
f3685dcdc9 Factor out the code for picking integer arithmetic with immediate 
opcodes into a helper function. This fixes a few places in the code
which were not properly selecting the 8-bit-immediate opcodes.

llvm-svn: 104091
 2010-05-19 00:53:19 +00:00
Bill Wendling
8a2afec7c1 Several tail call tests apparently rely upon this being "adjusts stack" instead 
of "has calls". That's probably wrong, but it needs further
investigation. Revert to the original behavior until this is settled.

llvm-svn: 103824
 2010-05-14 21:58:35 +00:00