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Author SHA1 Message Date
Devang Patel
8233c58f5d If argument numbering is encoded in metadata then emit arguments' debug info in that order. 
llvm-svn: 126794
 2011-03-01 22:58:55 +00:00
Devang Patel
5c7b3c4228 Today, the language front ends produces llvm.dbg.* intrinsics, used to encode arguments' debug info, in order any way, most of the times. However, if a front end mix-n-matches llvm.dbg.declare and llvm.dbg.value intrinsics to encode debug info for arguments then code generator needs a way to find argument order. 
Use 8 bits from line number field to keep track of argument ordering while encoding debug info for an argument. That leaves 24 bit for line no, DebugLoc also allocates 24 bit for line numbers. If a function has more than 255 arguments then rest of the arguments will be ordered by llvm.dbg.* intrinsics' ordering in IR.

llvm-svn: 126793
 2011-03-01 22:58:13 +00:00
Oscar Fuentes
55a2d6fe22 Cmake fix for option defaults not being set correctly on first run 
On the first cmake run before the caches has been updated with the
default options, options defined after HandleLLVMOptions are always
treated as off inside HandleLLVMOptions.

Patch by Erik Olofsson!

llvm-svn: 126790
 2011-03-01 22:31:19 +00:00
Dan Gohman
4694b04817 Escape graph edge labels. 
llvm-svn: 126788
 2011-03-01 22:12:24 +00:00
Dan Gohman
ec55e3d750 Remove the showline argument from the SMDiagnostic constructor 
which constructs a diagnostic with no line to show.

llvm-svn: 126787
 2011-03-01 22:11:52 +00:00
Dan Gohman
bf282415a2 Code simplification. 
llvm-svn: 126786
 2011-03-01 22:07:55 +00:00
Dan Gohman
304de5bc17 Simplify this code. 
llvm-svn: 126785
 2011-03-01 22:07:32 +00:00
Dan Gohman
c6cda9defe Change directory_entry::path() to return a const std::string & instead of 
a StringRef, for the benefit of clients that want the result as a
nul-terminated string. Clients that expect a StringRef will get one via
the implicit conversion.

llvm-svn: 126784
 2011-03-01 22:07:09 +00:00
Cameron Zwarich
0287e8ad22 Stop computing the number of uses twice per value in CodeGenPrepare's sinking of 
addressing code. On 403.gcc this almost halves CodeGenPrepare time and reduces
total llc time by 9.5%. Unfortunately, getNumUses() is still the hottest function
in llc.

llvm-svn: 126782
 2011-03-01 21:13:53 +00:00
Jakob Stoklund Olesen
ef6bec1ff5 Keep track of which stage produced a live range, and bypass earlier stages when revisiting. 
This effectively disables the 'turbo' functionality of the greedy register
allocator where all new live ranges created by splitting would be reconsidered
as if they were originals.

There are two reasons for doing this, 1. It guarantees that the algorithm
terminates. Early versions were prone to infinite looping in certain corner
cases. 2. It is a 2x speedup. We can skip a lot of unnecessary interference
checks that won't lead to good splitting anyway.

The problem is that region splitting only gets one shot, so it should probably
be changed to target multiple physical registers at once.

Local live range splitting is still 'turbo' enabled. It only accounts for a
small fraction of compile time, so it is probably not necessary to do anything
about that.

llvm-svn: 126781
 2011-03-01 21:10:07 +00:00
Duncan Sands
859a335e92 Add datalayout information for the IEEE quad precision fp128 type. 
llvm-svn: 126780
 2011-03-01 20:56:50 +00:00
Dan Gohman
8626e387c3 Revert PathV2 changes, as sys::fs::unique_file is not finished yet. 
llvm-svn: 126773
 2011-03-01 19:50:55 +00:00
Talin
1d7928c794 Added missing va_end(). 
llvm-svn: 126759
 2011-03-01 18:00:49 +00:00
Duncan Sands
b0cd2d9a1e Add a few missed unary cases when legalizing vector results. Put some cases 
in alphabetical order.

llvm-svn: 126745
 2011-03-01 15:15:43 +00:00
Anders Carlsson
1eb388e6c3 Make InstCombiner::FoldAndOfICmps create a ConstantRange that's the 
intersection of the LHS and RHS ConstantRanges and return "false" when
the range is empty.

This simplifies some code and catches some extra cases.

llvm-svn: 126744
 2011-03-01 15:05:01 +00:00
Chris Lattner
877ce8549d add a missing const qualifier for consistency. 
llvm-svn: 126742
 2011-03-01 08:36:21 +00:00
Nick Lewycky
e9d448e997 Optimize "icmp pred (urem X, Y), Y" --> true/false depending on pred. There's 
more work to do here, "icmp ult (urem X, 10), 11" doesn't optimize away yet.
Fixes example 3 from PR9343!

llvm-svn: 126741
 2011-03-01 08:15:50 +00:00
Jim Grosbach
3b72823981 trailing whitespace. 
llvm-svn: 126733
 2011-03-01 01:39:05 +00:00
Jim Grosbach
fbdcd70f4b Generalize the register matching code in DAGISel a bit. 
llvm-svn: 126731
 2011-03-01 01:37:19 +00:00
Bill Wendling
304dda7810 Narrow right shifts need to encode their immediates differently from a normal 
shift.

   16-bit: imm6<5:3> = '001', 8 - <imm> is encded in imm6<2:0>
   32-bit: imm6<5:4> = '01',16 - <imm> is encded in imm6<3:0>
   64-bit: imm6<5> = '1', 32 - <imm> is encded in imm6<4:0>

llvm-svn: 126723
 2011-03-01 01:00:59 +00:00
Eli Friedman
c00dc3f262 Add an obvious missing safety check to DAE::RemoveDeadArgumentsFromCallers. 
llvm-svn: 126720
 2011-03-01 00:33:47 +00:00
Chris Lattner
871d62dc5b add a note 
llvm-svn: 126719
 2011-03-01 00:24:51 +00:00
Ted Kremenek
8c2e50117d Unbreak CMake build. 
llvm-svn: 126717
 2011-03-01 00:02:51 +00:00
Ted Kremenek
7b6189c848 Unbreak CMake build. 
llvm-svn: 126715
 2011-02-28 23:56:33 +00:00
Talin
753b7ce425 Add an END_WITH_NULL accessor for ConstantStruct. 
llvm-svn: 126714
 2011-02-28 23:53:27 +00:00
Chris Lattner
77d6f9b20e update cmake 
llvm-svn: 126694
 2011-02-28 22:45:25 +00:00
Renato Golin
986151bc09 Fix .fpu printing in ARM assembly, regarding bug http://llvm.org/bugs/show_bug.cgi?id=8931 
llvm-svn: 126689
 2011-02-28 22:04:27 +00:00
Kevin Enderby
da76779962 Add missing whitespace in the formatting. 
llvm-svn: 126687
 2011-02-28 21:45:12 +00:00
Jan Sjödin
6bc6d6ab39 Make all static functions become static class methods. Move shared (duplicated) functions to new MCELF class. 
llvm-svn: 126686
 2011-02-28 21:45:04 +00:00
Owen Anderson
22d34c260e Use the correct shift amount type. 
llvm-svn: 126684
 2011-02-28 21:10:10 +00:00
Owen Anderson
1614a324d9 Clean whitespace. 
llvm-svn: 126683
 2011-02-28 20:57:56 +00:00
Chris Lattner
355d573721 fix a signed comparison warning. 
llvm-svn: 126682
 2011-02-28 20:50:35 +00:00
Dan Gohman
8586cb2f51 Delete obsolete test. 
llvm-svn: 126680
 2011-02-28 19:58:14 +00:00
Owen Anderson
9d0944d6bd Fix warning when building with clang++. 
llvm-svn: 126679
 2011-02-28 19:58:06 +00:00
Dan Gohman
91de965338 Delete the GEPSplitter experiment. 
llvm-svn: 126671
 2011-02-28 19:47:47 +00:00
Dan Gohman
db646bfdad Delete the SimplifyHalfPowrLibCalls pass, which was unused, and 
only existed as the result of a misunderstanding.

llvm-svn: 126669
 2011-02-28 19:41:14 +00:00
Dan Gohman
1ee6941aca Delete the LiveValues pass. I won't get get back to the project it 
was started for in the foreseeable future.

llvm-svn: 126668
 2011-02-28 19:37:59 +00:00
Jakob Stoklund Olesen
2bec7738eb Fix typo introduced by r126661: "Fix a typo which ..." 
llvm-svn: 126666
 2011-02-28 19:18:59 +00:00
David Greene
3bc73b0ae9 [AVX] Add decode support for VUNPCKLPS/D instructions, both 128-bit 
and 256-bit forms.  Because the number of elements in a vector
      does not determine the vector type (4 elements could be v4f32 or
      v4f64), pass the full type of the vector to decode routines.

llvm-svn: 126664
 2011-02-28 19:06:56 +00:00
Kevin Enderby
a1c2ea4ba0 Fix the arm's disassembler for blx that was building an MCInst without the 
needed two predicate operands before the imm operand.

llvm-svn: 126662
 2011-02-28 18:46:31 +00:00
Evan Cheng
4e6d375744 Fix a typo which cause dag combine crash. rdar://9059537. 
llvm-svn: 126661
 2011-02-28 18:45:27 +00:00
Stuart Hastings
539d4e1460 Support for byval parameters on ARM. Will be enabled by a forthcoming 
patch to the front-end.  Radar 7662569.

llvm-svn: 126655
 2011-02-28 17:17:53 +00:00
Duncan Sands
0f78cf8a37 Windows codegen also dies on this, so restrict to the platform it was 
actually tested on.

llvm-svn: 126652
 2011-02-28 14:22:08 +00:00
Kalle Raiskila
cc5b703c81 Add branch hinting for SPU. 
The implemented algorithm is overly simplistic (just speculate all branches are
taken)- this is work in progress.

llvm-svn: 126651
 2011-02-28 14:08:24 +00:00
Duncan Sands
195d2036d0 Make this test x86 specific because the ARM backend can't handle it. 
llvm-svn: 126650
 2011-02-28 12:30:47 +00:00
Frits van Bommel
4a2b658705 Teach SimplifyCFG that (switch (select cond, X, Y)) is better expressed as a branch. 
Based on a patch by Alistair Lynn.

llvm-svn: 126647
 2011-02-28 09:44:07 +00:00
Nick Lewycky
fe02856d37 Fix comment. 
llvm-svn: 126645
 2011-02-28 09:18:11 +00:00
Nick Lewycky
dcc97b5f44 srem doesn't actually have the same resulting sign as its numerator, you could 
also have a zero when numerator = denominator. Reverts parts of r126635 and
r126637.

llvm-svn: 126644
 2011-02-28 09:17:39 +00:00
Nick Lewycky
28f01da48e Teach InstCombine to fold "(shr exact X, Y) == 0" --> X == 0, fixing #1 from 
PR9343.

llvm-svn: 126643
 2011-02-28 08:31:40 +00:00
Nick Lewycky
dd5df7ef0a Teach value tracking to make use of flags in more situations. 
llvm-svn: 126642
 2011-02-28 08:02:21 +00:00