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Author SHA1 Message Date
Chris Lattner
0f611954b6 tweaks suggested by Duncan 
llvm-svn: 92824
 2010-01-06 05:32:15 +00:00
Dale Johannesen
add9a6d765 Reenable debug info on PPC. Works well enough to 
bootstrap.

llvm-svn: 92818
 2010-01-06 02:21:00 +00:00
Dale Johannesen
225c2cfffe Make sure debug info hook gets called when emitting 
synonyms for PPC.

llvm-svn: 92817
 2010-01-06 02:20:18 +00:00
Chris Lattner
0b73344d8a Teach instcombine's sext elimination logic to be more aggressive. 
Previously, instcombine would only promote an expression tree to
the larger type if doing so eliminated two casts.  This is because
a need to manually do the sign extend after the promoted expression
tree with two shifts.  Now, we keep track of whether the result of
the computation is going to be properly sign extended already.  If
so, we can unconditionally promote the expression, which allows us
to zap more sext's.

This implements rdar://6598839 (aka gcc pr38751)

llvm-svn: 92815
 2010-01-06 01:56:21 +00:00
Jakob Stoklund Olesen
03dea01d94 Add <imp-def> and <imp-kill> operands when replacing virtual sub-register defs and kills. 
An instruction like this:

  %reg1097:1<def> = VMOVSR %R3<kill>, 14, %reg0

Must be replaced with this when substituting physical registers:

  %S0<def> = VMOVSR %R3<kill>, 14, %reg0, %D0<imp-def>

llvm-svn: 92812
 2010-01-06 00:29:28 +00:00
Bill Wendling
b4f0d6e3b6 The previous code could potentially cause a cycle. Allow ordering w.r.t. a 0 order. 
llvm-svn: 92810
 2010-01-06 00:23:35 +00:00
Bill Wendling
41e18c3512 Only check the ordering if there is an ordering for each nodes. 
llvm-svn: 92807
 2010-01-06 00:09:23 +00:00
Bill Wendling
b7d6746476 Add a semi-primitive form of scheduling via the "SDNode ordering" to the 
bottom-up scheduler. We prefer the lower order number.

llvm-svn: 92806
 2010-01-05 23:48:12 +00:00
Chris Lattner
7bf6842c49 simplify this code. 
llvm-svn: 92800
 2010-01-05 23:00:30 +00:00
Dan Gohman
93a28a6ce9 Move this test from test/Transforms/IndVarSimplify to 
test/CodeGen/X86, as doesn't use -indvars, and it does use
llc -march=x86-64.

llvm-svn: 92799
 2010-01-05 22:52:54 +00:00
Bill Wendling
7e9607ab56 Don't assign the shift the same type as the variable being shifted. This could 
result in illegal types for the SHL operator.

llvm-svn: 92797
 2010-01-05 22:39:10 +00:00
Johnny Chen
6ae7666885 Undo r92785, it caused test failure. 
llvm-svn: 92796
 2010-01-05 22:37:28 +00:00
Chris Lattner
a101affbdb make this a static function instead of a method. 
llvm-svn: 92795
 2010-01-05 22:30:42 +00:00
Dan Gohman
9ef9e2c758 Don't use the ISD::NodeType enum for SDNode opcodes, as CodeGen 
uses several kinds of opcode values which are not declared within
that enum. This fixes PR5946.

llvm-svn: 92794
 2010-01-05 22:26:32 +00:00
Victor Hernandez
0e7561092b Re-add parsing of function-local metadata; this time with testcase. 
llvm-svn: 92793
 2010-01-05 22:22:14 +00:00
Chris Lattner
53b9ed70ee more rearrangement and cleanup, fix my test failure. 
llvm-svn: 92792
 2010-01-05 22:21:18 +00:00
Chris Lattner
45cd7ba394 cleanup 
llvm-svn: 92790
 2010-01-05 22:07:33 +00:00
Chris Lattner
2f69f6a822 remove two trunc xforms that are subsumed by EvaluateInDifferentType. 
The only difference is that EvaluateInDifferentType checks to ensure
they are profitable before doing them :)

llvm-svn: 92788
 2010-01-05 22:01:41 +00:00
Chris Lattner
96e30cb44f merge some tests. 
llvm-svn: 92786
 2010-01-05 21:54:09 +00:00
Johnny Chen
f15fb27ffd Add Rt2 to the asm format string for 32-bit Thumb load/store register dual 
instructions.  Thumb does not have the restriction that t2 = t+1.

llvm-svn: 92785
 2010-01-05 21:51:46 +00:00
Chris Lattner
fd23a9b6dd merge cast2 into cast.ll 
llvm-svn: 92784
 2010-01-05 21:48:13 +00:00
Devang Patel
311b5584e5 Allow null to be an element of NamedMDNode. e.g. !llvm.stuff = !{!0, !1, null} 
llvm-svn: 92783
 2010-01-05 21:47:32 +00:00
Chris Lattner
24e500eb45 remove useless test. 
llvm-svn: 92782
 2010-01-05 21:46:22 +00:00
Chris Lattner
61de3ae41a another example. 
llvm-svn: 92781
 2010-01-05 21:43:08 +00:00
Jakob Stoklund Olesen
8e4cdf70e1 Don't specify CR sub-registers as implicit defs of BL instructions. 
It is enough to give the super registers CR0, CR1, ..., and specifying the
sub-registers as well causes confusion in the liveness computations.

llvm-svn: 92778
 2010-01-05 21:38:37 +00:00
Chris Lattner
65d5ec781a remove a useless negative test, add a rdar # to an xfail that I'm working on. 
llvm-svn: 92777
 2010-01-05 21:37:44 +00:00
Chris Lattner
3e7dbaf22d clean up tests. 
llvm-svn: 92776
 2010-01-05 21:32:59 +00:00
Chris Lattner
13293b9738 just remove this xform which is subsumed by others. 
llvm-svn: 92775
 2010-01-05 21:16:30 +00:00
Victor Hernandez
173518e4ae Fix comment for CheckDebugInfoIntrinsics 
llvm-svn: 92774
 2010-01-05 21:13:46 +00:00
Chris Lattner
3aac94341a move a trunc-specific transform out of commonIntCastTransforms into visitTrunc. 
llvm-svn: 92773
 2010-01-05 21:11:17 +00:00
Dan Gohman
b4e120e7a7 Restore dump() methods to Loop and MachineLoop. 
llvm-svn: 92772
 2010-01-05 21:08:02 +00:00
Benjamin Kramer
0ba7479f2c Move remaining stuff to the isInteger predicate. 
llvm-svn: 92771
 2010-01-05 21:05:54 +00:00
Chris Lattner
18ed3a6976 move a zext specific xform out of commonIntCastTransforms into visitZExt and modernize it. 
llvm-svn: 92770
 2010-01-05 21:04:47 +00:00
Jakob Stoklund Olesen
0277c4cd0b Remove livein checks from machine code verifier. 
A phi operand that is implicitly defined in a predecessor becomes an undefined
register after phi elimination. This causes a lot of false positives when the
verifier is checking if live-in registers are live-out from all predecessors.

Removing the verifier checks seems like a better solution than insisting on
IMPLICIT_DEF instructions in predecessor blocks.

llvm-svn: 92769
 2010-01-05 20:59:36 +00:00
Chris Lattner
4c21bfec50 move a trunc-specific xform out of commonIntCastTransforms into visitTrunc 
llvm-svn: 92768
 2010-01-05 20:57:30 +00:00
Chris Lattner
e293a03aff reduce indentation 
llvm-svn: 92766
 2010-01-05 20:56:24 +00:00
Anton Korobeynikov
5781312f77 Regenerate 
llvm-svn: 92763
 2010-01-05 20:45:43 +00:00
Anton Korobeynikov
d5e61f574a Proper deduce z/System LLVM target from target triple when 
--enable-targets=host is specified.

llvm-svn: 92762
 2010-01-05 20:45:13 +00:00
Devang Patel
ab66612f1b NamedMDNode is a collection MDNodes. 
llvm-svn: 92761
 2010-01-05 20:41:31 +00:00
Benjamin Kramer
c233521d45 Convert a ton of simple integer type equality tests to the new predicate. 
llvm-svn: 92760
 2010-01-05 20:07:06 +00:00
Benjamin Kramer
6a11532b00 Add a new predicate for integer type equality tests. 
llvm-svn: 92759
 2010-01-05 20:04:48 +00:00
David Greene
19324a5b81 Add an !eq() operator to TableGen. It operates on strings only. 
Use !cast<string>() to compare other types of objects.

llvm-svn: 92754
 2010-01-05 19:11:42 +00:00
Dan Gohman
77ec0f447e Add an entry on SmallBitVector. 
llvm-svn: 92747
 2010-01-05 18:24:00 +00:00
Chris Lattner
f457542506 optimize comparisons against cttz/ctlz/ctpop, patch by Alastair Lynn! 
llvm-svn: 92745
 2010-01-05 18:09:56 +00:00
Dan Gohman
5fa04f2707 Delete useless trailing semicolons. 
llvm-svn: 92740
 2010-01-05 17:55:26 +00:00
Dan Gohman
4b9a39d586 Nick Lewycky pointed out that this code makes changes unconditionally. 
llvm-svn: 92739
 2010-01-05 17:50:58 +00:00
David Greene
eef5772b46 Have TableGen emit code that uses dbgs() rather than errs(). 
llvm-svn: 92738
 2010-01-05 17:47:41 +00:00
Devang Patel
eb75073664 If a scope has only one instruction then first instruction is also the last instruction. 
llvm-svn: 92736
 2010-01-05 16:59:17 +00:00
Dan Gohman
fff95c0489 Set Changed properly after calling DeleteDeadPHIs. 
llvm-svn: 92735
 2010-01-05 16:31:45 +00:00
Dan Gohman
e4a22bdd4a Use do+while instead of while for loops which obviously have a 
non-zero trip count. Use SmallVector's pop_back_val().

llvm-svn: 92734
 2010-01-05 16:27:25 +00:00