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70113e8a1b
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8220 Commits

Author SHA1 Message Date
Nick Lewycky
70113e8a1b Remove VISIBILITY_HIDDEN from the classes in this directory. Fixes bug 5507. 
llvm-svn: 89075
 2009-11-17 09:17:08 +00:00
Nick Lewycky
549b6439f3 Revert r88939. 
llvm-svn: 89066
 2009-11-17 08:11:44 +00:00
Bill Wendling
dcecc143ae Refactor the code that creates the "dot-label" difference. This may be used in 
more than one place. No intended functionality change.

llvm-svn: 89024
 2009-11-17 01:23:53 +00:00
Jakob Stoklund Olesen
6ac8f7ec34 Enable -split-phi-edges by default 
llvm-svn: 89021
 2009-11-17 01:07:22 +00:00
Dan Gohman
fc21555ca5 Remove the optimizations that convert BRCOND and BR_CC into 
unconditional branches or fallthroghes. Instcombine/SimplifyCFG
should be simplifying branches with known conditions.

This fixes some problems caused by these transformations not
updating the MachineBasicBlock CFG.

llvm-svn: 89017
 2009-11-17 00:47:23 +00:00
Dan Gohman
04717dcf0a Initialize the new AsmPrinterFlags field to 0, fixing uses of 
uninitialized memory.

llvm-svn: 88985
 2009-11-16 22:49:38 +00:00
Devang Patel
aad93dd4c0 Revert r88939. 
llvm-svn: 88973
 2009-11-16 21:53:40 +00:00
Dan Gohman
22377c8327 Sink a #include <map> to where it's actually needed. 
llvm-svn: 88956
 2009-11-16 20:40:47 +00:00
Dan Gohman
0679a637b3 Fix a typo in a comment. 
llvm-svn: 88953
 2009-11-16 20:35:59 +00:00
Bob Wilson
ead1392ff4 Fix a comment. 
llvm-svn: 88940
 2009-11-16 19:33:27 +00:00
Devang Patel
9263c9d854 Add VISIBILITY_HIDDEN marker. 
llvm-svn: 88939
 2009-11-16 19:20:48 +00:00
Bob Wilson
72925c0154 Fix some comments. 
llvm-svn: 88932
 2009-11-16 18:54:08 +00:00
Bob Wilson
eca4a0c2e4 Whitespace: be consistent with pointer syntax. 
llvm-svn: 88929
 2009-11-16 18:08:46 +00:00
Bob Wilson
04825f6c4b Clean up whitespace. 
llvm-svn: 88927
 2009-11-16 17:56:13 +00:00
David Greene
6469fa6824 Support spill comments. 
Have the asm printer emit a comment if an instruction is a spill or
reload and have the spiller mark copies it introdues so the asm printer
can also annotate those.

llvm-svn: 88911
 2009-11-16 15:12:23 +00:00
Evan Cheng
ea46259f53 Check if subreg index is zero. 
llvm-svn: 88899
 2009-11-16 06:31:49 +00:00
Evan Cheng
2fa416debd For some targets, a copy can use a register multiple times, e.g. ppc. 
llvm-svn: 88895
 2009-11-16 05:52:06 +00:00
Lang Hames
bd7b181f94 Fixes the bug exposed by Anton's test case in PR 5495: 
Make sure when ProcessImplicitDefs removes a copy which kills its source reg that it
removes the copy from said reg's Kills list.

llvm-svn: 88881
 2009-11-16 02:07:31 +00:00
Lang Hames
ce9d705846 Fix for the original bug in PR5495 - Look at uses as well as defs when determining the PHI-copy insert point. 
- Patch by Andrew Canis!

llvm-svn: 88880
 2009-11-16 02:00:09 +00:00
Lang Hames
4d30650e61 Added an assert to the PBQP allocator to catch infinite cost solutions which might otherwise lead to miscompilations. 
llvm-svn: 88829
 2009-11-15 04:39:51 +00:00
Jim Grosbach
b81732e2f7 Do not merge jump tables this early. Branch folding will do any necessary 
merges, and until then, it's useful to keep the tables separate for ease
of manipulation.

llvm-svn: 88806
 2009-11-14 20:15:03 +00:00
Jim Grosbach
e4dfaf99cd Add function to replace a destination MBB in a single jump table 
llvm-svn: 88804
 2009-11-14 20:09:13 +00:00
Sanjiv Gupta
b38d6287b8 revert 88761 as it fails builds. 
llvm-svn: 88762
 2009-11-14 07:22:25 +00:00
Sanjiv Gupta
3db18af363 Fix debug info crashes for PIC16. 
llvm-svn: 88761
 2009-11-14 06:19:49 +00:00
Evan Cheng
b8c04e1226 Added getSubRegIndex(A,B) that returns subreg index of A to B. Use it to replace broken code in VirtRegRewriter. 
llvm-svn: 88753
 2009-11-14 03:42:17 +00:00
Evan Cheng
9b46e74f42 - Change TargetInstrInfo::reMaterialize to pass in TargetRegisterInfo. 
- If destination is a physical register and it has a subreg index, use the
  sub-register instead.
This fixes PR5423.

llvm-svn: 88745
 2009-11-14 02:55:43 +00:00
Evan Cheng
c56b0a0f14 Fix PR5412: Fix an inverted check and another missing sub-register check. 
llvm-svn: 88738
 2009-11-14 02:09:09 +00:00
Dan Gohman
b36274632d Enable the tail call optimization when the caller returns undef. 
llvm-svn: 88737
 2009-11-14 02:06:30 +00:00
Jakob Stoklund Olesen
2ece9d4854 Fix bug in -split-phi-edges. 
When splitting an edge after a machine basic block with fall-through, we
forgot to insert a jump instruction. Fix this by calling updateTerminator() on
the fall-through block when relevant.

Also be more precise in PHIElimination::isLiveIn.

llvm-svn: 88728
 2009-11-14 00:38:13 +00:00
Jakob Stoklund Olesen
28f746c6fa Update MachineDominator information 
llvm-svn: 88727
 2009-11-14 00:38:06 +00:00
Lang Hames
8b2d2c7537 Added an API to the SlotIndexes pass to allow new instructions to be inserted into the numbering. 
PreAllocSplitting is now using this API to insert code.

llvm-svn: 88725
 2009-11-14 00:02:51 +00:00
Evan Cheng
e2907b91de Fix PR5411. Bug in UpdateKills. A reg def partially define its super-registers. 
llvm-svn: 88719
 2009-11-13 23:16:41 +00:00
Jakob Stoklund Olesen
a8d26951eb Fix PHIElimination optimization that uses MBB->getBasicBlock. 
The BasicBlock associated with a MachineBasicBlock does not necessarily
correspond to the code in the MBB.

Don't insert a new IR BasicBlock when splitting critical edges. We are not
supposed to modify the IR during codegen, and we should be able to do just
fine with a NULL BB.

llvm-svn: 88707
 2009-11-13 21:56:15 +00:00
Jakob Stoklund Olesen
ec4eff6c6a Add MachineFunction::verify() to call the machine code verifier directly. 
llvm-svn: 88706
 2009-11-13 21:56:09 +00:00
Jakob Stoklund Olesen
28a81d4c5a Fix polarity of a CFG check in machine verifier. 
llvm-svn: 88704
 2009-11-13 21:55:54 +00:00
Dan Gohman
30f404fb4a Use .data() instead of .c_str() when nul-termination is not needed. 
llvm-svn: 88703
 2009-11-13 21:55:31 +00:00
David Greene
97a1f550d1 Move DebugInfo checks into EmitComments and remove them from 
target-specific AsmPrinters.  Not all comments need DebugInfo.

Re-enable the line numbers comment test.

llvm-svn: 88697
 2009-11-13 21:34:57 +00:00
Dan Gohman
972293611d When optimizing for size, don't tail-merge unless it's likely to be a 
code-size win, and not when it's only likely to be code-size neutral,
such as when only a single instruction would be eliminated and a new
branch would be required.

This fixes rdar://7392894.

llvm-svn: 88692
 2009-11-13 21:02:15 +00:00
Evan Cheng
f629fdcab2 Fix PR5410: LiveVariables lost subreg def: 
D0<def,dead> = ...
...
             = S0<use, kill>
S0<def>      = ...
...
D0<def>      = 

The first D0 def is correctly marked dead, however, livevariables should have
added an implicit def of S0 or we end up with a use without a def.

llvm-svn: 88690
 2009-11-13 20:36:40 +00:00
David Goodwin
e1d06f2239 Allow target to specify regclass for which antideps will only be broken along the critical path. 
llvm-svn: 88682
 2009-11-13 19:52:48 +00:00
Dan Gohman
01b65e1e48 Don't let a noalias difference disrupt the tailcall optimization. 
llvm-svn: 88672
 2009-11-13 18:49:38 +00:00
Devang Patel
7f5ae01388 Ignore nameless variables. 
llvm-svn: 87069
 2009-11-13 02:25:26 +00:00
Dale Johannesen
f57a58c4fe Adjust isConstantSplat to allow for big-endian targets. 
PPC is such a target; make it work.

llvm-svn: 87060
 2009-11-13 01:45:18 +00:00
Bill Wendling
af38b4195e Simplify code a bit 
llvm-svn: 87040
 2009-11-12 23:13:08 +00:00
Bill Wendling
507f0b33a6 Refactor code that checks if it's a call to a "nounwind" function. 
llvm-svn: 87036
 2009-11-12 21:59:20 +00:00
David Greene
1e8e66866e Do some cleanups suggested by Chris. 
llvm-svn: 87034
 2009-11-12 21:49:55 +00:00
David Greene
7c84128066 Set the ReloadReuse AsmPrinter flag where appropriate. 
llvm-svn: 87030
 2009-11-12 21:07:54 +00:00
Daniel Dunbar
be0325cd14 Fix -Asserts warning. 
llvm-svn: 87024
 2009-11-12 20:53:43 +00:00
Bill Wendling
63f6c52635 If there's more than one function operand to a call instruction, be conservative 
and don't assume that the call doesn't throw. It would be nice if there were a
way to determine which is the callee and which is a parameter. In practice, the
architecture we care about normally only have one operand for a call instruction
(x86 and arm).

llvm-svn: 87023
 2009-11-12 20:51:53 +00:00
David Greene
58e7c6145b Add a bool flag to StackObjects telling whether they reference spill 
slots.  The AsmPrinter will use this information to determine whether to
print a spill/reload comment.

Remove default argument values.  It's too easy to pass a wrong argument
value when multiple arguments have default values.  Make everything
explicit to trap bugs early.

Update all targets to adhere to the new interfaces..

llvm-svn: 87022
 2009-11-12 20:49:22 +00:00