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Author SHA1 Message Date
Daniel Dunbar
59040c2825 Add llvm::sys::getHostCPUName, for detecting the LLVM name for the host CPU. 
- This is an initial step towards -march=native support in Clang, and towards
   eliminating host dependencies in the targets. See PR5389.

 - Patch by Roman Divacky!

llvm-svn: 88768
 2009-11-14 10:09:12 +00:00
Nick Lewycky
316e082216 Remove LLVMContext from reassociate. It was threaded through every function but 
ultimately never used.

llvm-svn: 88763
 2009-11-14 07:25:54 +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
Nick Lewycky
fba1efd298 Teach BasicAA that a constant expression can't alias memory provably not 
allocated until runtime (such as an alloca). Patch by Hans Wennborg!

llvm-svn: 88760
 2009-11-14 06:15:14 +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
Dan Gohman
406baaac43 Add an option for running GVN with redundant load processing disabled. 
llvm-svn: 88742
 2009-11-14 02:27:51 +00:00
Evan Cheng
3781b2e7b3 Add radar number. 
llvm-svn: 88739
 2009-11-14 02:11:32 +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
Evan Cheng
e43198c166 When expanding t2STRDi8 r, r to two stores, add kill markers correctly. 
llvm-svn: 88734
 2009-11-14 01:50:00 +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
Eric Christopher
9b6ef0d374 Remove extraneous commit. 
llvm-svn: 88716
 2009-11-13 23:08:47 +00:00
Eric Christopher
14bf8d4de6 Print out something, even if it's non-parseable later when we've 
got ghost linkage. It's better than aborting.

llvm-svn: 88715
 2009-11-13 23:00:14 +00:00
Dan Gohman
ae5b3a399e Move the FixedStackPseudoSourceValueVal enum value before InstructionVal 
so that isa<Instructon> doesn't return true for FixedStackPseudoSourceValue
values. This fixes a variety of problems, including crashes with -debug
and -print-machineinstrs. Also, add a comment to warn about this.

llvm-svn: 88711
 2009-11-13 22:24:13 +00:00
Bill Wendling
2b0d1f6495 Disable the JITTest.NoStubs test for Darwin PPC. It apparently doesn't implement 
emitFunctionStubAtAddr.

llvm-svn: 88708
 2009-11-13 21:58:54 +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
a077364caa The instruction pointer %RIP is a reserved register on x86_64. 
llvm-svn: 88705
 2009-11-13 21:56:01 +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
Devang Patel
20069bcd4d Do not use value handle to wrap MDNode in DIDescriptor. 
llvm-svn: 88700
 2009-11-13 21:45:04 +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
Bruno Cardoso Lopes
e3686712f7 Support fp64 immediate zero, this fixes only part of PR5445 
because the testcase is triggering one more bug.

llvm-svn: 88674
 2009-11-13 18:49:59 +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
David Greene
7eb9716603 Remove duplicate APIs and state WRT spill objects. 
llvm-svn: 87106
 2009-11-13 14:42:06 +00:00
Rafael Espindola
bece8d9ae7 Distinguish "a," from "a". The first one splits into "a" + "" and the second one into 
"a" + 0.

llvm-svn: 87084
 2009-11-13 04:55:09 +00:00
Devang Patel
3e2aba2402 Revert r87059 for now. It is failing clang tests. 
llvm-svn: 87070
 2009-11-13 02:27:33 +00:00
Devang Patel
7f5ae01388 Ignore nameless variables. 
llvm-svn: 87069
 2009-11-13 02:25:26 +00:00
Rafael Espindola
11ceba8119 Switch to smallvector. Also fix issue with using unsigend for MaxSplit. 
llvm-svn: 87068
 2009-11-13 02:18:25 +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
Victor Hernandez
0be9d07279 Remove unnecessary llvm.dbg.declare bitcast 
llvm-svn: 87059
 2009-11-13 01:44:55 +00:00
Rafael Espindola
22f040b797 Add a new split method to StringRef that puts the substrings in a vector. 
llvm-svn: 87058
 2009-11-13 01:24:40 +00:00
Jim Grosbach
c15c777f81 Block renumbering 
llvm-svn: 87056
 2009-11-13 01:19:24 +00:00
Jim Grosbach
85faa3cff1 use lower case for readability 
llvm-svn: 87054
 2009-11-13 01:17:22 +00:00
Daniel Dunbar
cdeab5257c Update test. 
llvm-svn: 87049
 2009-11-13 01:01:58 +00:00
David Greene
1a5969d74c Fix a bootstrap failure. 
Provide special isLoadFromStackSlotPostFE and isStoreToStackSlotPostFE
interfaces to explicitly request checking for post-frame ptr elimination
operands.  This uses a heuristic so it isn't reliable for correctness.

llvm-svn: 87047
 2009-11-13 00:29:53 +00:00
Owen Anderson
81f2ff1d61 Re-enable this code, since redundant PHIs are now being better nuked. 
llvm-svn: 87042
 2009-11-12 23:22:41 +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
Chris Lattner
9a1f2aaff0 use isInstructionTriviallyDead, as pointed out by Duncan 
llvm-svn: 87035
 2009-11-12 21:58:18 +00:00
David Greene
1e8e66866e Do some cleanups suggested by Chris. 
llvm-svn: 87034
 2009-11-12 21:49:55 +00:00
Daniel Dunbar
880dfd38d8 StringRef(const char*) should not be used to turn null pointers into empty 
strings.

llvm-svn: 87031
 2009-11-12 21:26:11 +00:00