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190ff7fa88
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44035 Commits

Author SHA1 Message Date
Evan Cheng
190ff7fa88 Disable auto-detection of AVX support since AVX codegen support is not ready. 
llvm-svn: 121677
 2010-12-13 04:23:53 +00:00
Chris Lattner
003b79e2d3 don't bother handling non-canonical icmp's 
llvm-svn: 121676
 2010-12-13 04:18:32 +00:00
Chris Lattner
9bd0b12342 inline a function, making the result much simpler. 
llvm-svn: 121675
 2010-12-13 04:15:19 +00:00
Chris Lattner
25b642edfd Fix my previous patch to handle a degenerate case that the llvm-gcc 
bootstrap buildbot tripped over.

llvm-svn: 121674
 2010-12-13 03:43:57 +00:00
Chris Lattner
9b089512e9 convert some methods to be static functions 
llvm-svn: 121673
 2010-12-13 03:30:12 +00:00
Chris Lattner
46cc5158bb zap two more std::sorts. 
llvm-svn: 121672
 2010-12-13 03:24:30 +00:00
Chris Lattner
a21c02e807 fix a fairly serious oversight with switch formation from 
or'd conditions.  Previously we'd compile something like this:

int crud (unsigned char c) {
   return c == 62 || c == 34 || c == 92;
}

into:

  switch i8 %c, label %lor.rhs [
    i8 62, label %lor.end
    i8 34, label %lor.end
  ]

lor.rhs:                                          ; preds = %entry
  %cmp8 = icmp eq i8 %c, 92
  br label %lor.end

lor.end:                                          ; preds = %entry, %entry, %lor.rhs
  %0 = phi i1 [ true, %entry ], [ %cmp8, %lor.rhs ], [ true, %entry ]
  %lor.ext = zext i1 %0 to i32
  ret i32 %lor.ext

which failed to merge the compare-with-92 into the switch.  With this patch
we simplify this all the way to:

  switch i8 %c, label %lor.rhs [
    i8 62, label %lor.end
    i8 34, label %lor.end
    i8 92, label %lor.end
  ]

lor.rhs:                                          ; preds = %entry
  br label %lor.end

lor.end:                                          ; preds = %entry, %entry, %entry, %lor.rhs
  %0 = phi i1 [ true, %entry ], [ false, %lor.rhs ], [ true, %entry ], [ true, %entry ]
  %lor.ext = zext i1 %0 to i32
  ret i32 %lor.ext

which is much better for codegen's switch lowering stuff.  This kicks in 33 times
on 176.gcc (for example) cutting 103 instructions off the generated code.

llvm-svn: 121671
 2010-12-13 03:18:54 +00:00
Chris Lattner
6d4df726a6 simplify code and reduce indentation 
llvm-svn: 121670
 2010-12-13 02:38:13 +00:00
Chris Lattner
134d892049 convert an std::sort to array_pod_sort. 
llvm-svn: 121669
 2010-12-13 02:00:58 +00:00
Chris Lattner
153b680cdd move the "br (X == 0 | X == 1), T, F" -> switch optimization to a new 
location in simplifycfg.  In the old days, SimplifyCFG was never run on
the entry block, so we had to scan over all preds of the BB passed into
simplifycfg to do this xform, now we can just check blocks ending with
a condbranch.  This avoids a scan over all preds of every simplified 
block, which should be a significant compile-time perf win on functions
with lots of edges.  No functionality change.

llvm-svn: 121668
 2010-12-13 01:57:34 +00:00
Chris Lattner
644a93e06b reduce indentation and generally simplify code, no functionality change. 
llvm-svn: 121667
 2010-12-13 01:47:07 +00:00
Chris Lattner
859fad7373 use getFirstNonPHIOrDbg to simplify this code. 
llvm-svn: 121664
 2010-12-13 01:28:06 +00:00
Chris Lattner
6df4d5d88e reduce indentation by using continue, no functionality change. 
llvm-svn: 121662
 2010-12-13 01:11:17 +00:00
Chris Lattner
72f03b62a9 add a note 
llvm-svn: 121656
 2010-12-13 00:15:25 +00:00
Wesley Peck
f842b79b4b Missed some ADDI <-> ADDIK conversions in 121649. 
llvm-svn: 121652
 2010-12-12 22:53:14 +00:00
Wesley Peck
95cebfc460 MBlaze delay slot filler was not capable of using ADDK and variants to fill delay slots. This broke several test cases when 121649 was committed. This fixes the regression. 
llvm-svn: 121650
 2010-12-12 22:22:49 +00:00
Wesley Peck
38688d020c The ADD and ADDK (and all variants) instructions where flip-flopped in the MBlaze backend. This bug fix makes 64-bit math work on the MBlaze backend. 
llvm-svn: 121649
 2010-12-12 22:02:31 +00:00
Tobias Grosser
cd3d63e102 Remove useless dynamic_cast<>(). 
Thanks Peter for pointing me to something that should have never been
committed to the llvm code base.

llvm-svn: 121648
 2010-12-12 21:58:28 +00:00
Wesley Peck
7274c73974 1. Change MBlaze indirect branches to use absolute branch BRALD instead of pc relative branch BRLD. 
2. Make sure that the MBlaze stack is aligned to 4-byte boundaries.
3. Determine frame indexes that should be placed in the callers stack frame, as per the MBlaze ABI, and place them in the correct locations.

llvm-svn: 121639
 2010-12-12 20:52:31 +00:00
Duncan Sands
47a4bbd31d Catch attempts to remove a deleted node from the CSE maps. Better to 
catch this here rather than later after accessing uninitialized memory
etc.  Fires when compiling the testcase in PR8237.

llvm-svn: 121635
 2010-12-12 13:22:50 +00:00
Benjamin Kramer
a638216447 Generalize the and-icmp-select instcombine further by allowing selects of the form 
(x & 2^n) ? 2^m+C : C

we can offset both arms by C to get the "(x & 2^n) ? 2^m : 0" form, optimize the
select to a shift and apply the offset afterwards.

llvm-svn: 121609
 2010-12-11 10:49:22 +00:00
Benjamin Kramer
5a1721f4ac Factor the (x & 2^n) ? 2^m : 0 instcombine into its own method and generalize it 
to catch cases where n != m with a shift.

llvm-svn: 121608
 2010-12-11 09:42:59 +00:00
Evan Cheng
b6773d7e1f (or (and (shl A, #shamt), mask), B) => ARMbfi B, A, ~mask where lsb(mask) == #shamt. rdar://8752056 
llvm-svn: 121606
 2010-12-11 04:11:38 +00:00
Jakob Stoklund Olesen
a523d5f048 Add named timer groups for the different stages of register allocation. 
llvm-svn: 121604
 2010-12-11 00:19:56 +00:00
Jakob Stoklund Olesen
ef80efea1d Move MRI into RegAllocBase. Clean up debug output a bit. 
llvm-svn: 121599
 2010-12-10 23:49:00 +00:00
Jim Grosbach
98dcdf10c2 Add FIXME 
llvm-svn: 121598
 2010-12-10 23:41:10 +00:00
Nick Lewycky
46a6ed1f0f Remove extraneous close parenthesis. 
Fix build breakage.

llvm-svn: 121596
 2010-12-10 23:14:35 +00:00
Nick Lewycky
9afbedbc48 Move variable that's unused in an NDEBUG build inside the DEBUG() macro, fixing 
lib/CodeGen/RegAllocGreedy.cpp:233: error: unused variable 'TRC' [-Wunused-variable]

llvm-svn: 121594
 2010-12-10 23:05:10 +00:00
Owen Anderson
47a78db79b Attempt to get Thumb2 branch fixups working properly. 
llvm-svn: 121593
 2010-12-10 23:02:28 +00:00
Jakob Stoklund Olesen
6cd6e644e7 Force the greedy register allocator to always use the inline spiller. 
Soon, RegAllocGreedy will start splitting live ranges, and then deferred
spilling won't work anyway.

llvm-svn: 121591
 2010-12-10 22:54:44 +00:00
Jakob Stoklund Olesen
cbd4bac09d Rip out live range splitting support from the inline spiller. 
The spiller should only spill. The register allocator will drive live range
splitting, it has the needed information about register pressure and
interferences.

llvm-svn: 121590
 2010-12-10 22:54:40 +00:00
Owen Anderson
8424ab65e2 Fix merge error in my last fix to Thumb2 vldr fixups. 
llvm-svn: 121588
 2010-12-10 22:53:48 +00:00
Owen Anderson
f310c92333 Fixups for Thumb2 vldr's need to have the effective PC aligned as well. 
llvm-svn: 121587
 2010-12-10 22:46:47 +00:00
Bill Wendling
7f1cea7009 The MCFixupKindInfo table needs to be in the order that the enums were 
declared. Add a note specifying this and spruce up the list a bit.

llvm-svn: 121586
 2010-12-10 22:37:19 +00:00
Owen Anderson
e85fabac75 Provide the necessary post-encoder hook for Thumb2 encodings of VMOV and friends. 
llvm-svn: 121585
 2010-12-10 22:32:08 +00:00
Jakob Stoklund Olesen
5ab6552845 Use AllocationOrder in RegAllocGreedy, fix a bug in the hint calculation. 
llvm-svn: 121584
 2010-12-10 22:21:05 +00:00
Bob Wilson
d30768fe3e Add float patterns for Neon vld1-lane/dup and vst1-lane operations. 
llvm-svn: 121583
 2010-12-10 22:13:32 +00:00
Bob Wilson
ae683e722f Remove unused arguments. 
llvm-svn: 121582
 2010-12-10 22:13:24 +00:00
Owen Anderson
aaf97da84b Fix encoding of Thumb1 LDRB and STRB. 
llvm-svn: 121581
 2010-12-10 22:11:13 +00:00
Jim Grosbach
d7f424dec3 Trailing whitespace. 
llvm-svn: 121580
 2010-12-10 21:57:34 +00:00
Owen Anderson
44ad90c850 Fix Thumb2 encodings of STREX and LDREX. 
llvm-svn: 121579
 2010-12-10 21:52:38 +00:00
Dan Gohman
18e2a55c07 Revert r121520, which may have introduced miscompilations. 
llvm-svn: 121573
 2010-12-10 21:48:28 +00:00
Jim Grosbach
82dd80c956 Correct encoding of rotation immediate for Thumb2 instructions. rdar://8755999 
llvm-svn: 121525
 2010-12-10 21:24:18 +00:00
Jim Grosbach
63853d61e1 Fix encoding of 'U' bit for Thumb2 STRD/LDRD instructions. rdar://8755726 
llvm-svn: 121524
 2010-12-10 21:05:07 +00:00
Jim Grosbach
467e860805 More trivial cleanup. No need to define the EncoderMethod property type. Can 
just assign to it.

llvm-svn: 121523
 2010-12-10 20:53:44 +00:00
Jim Grosbach
5696d964ca Tidy up. 
llvm-svn: 121522
 2010-12-10 20:51:35 +00:00
Jim Grosbach
401391235f Trailing whitespace. 
llvm-svn: 121521
 2010-12-10 20:47:29 +00:00
Dan Gohman
d1bf1d8013 Implement PartialAlias checking in BasicAA. 
llvm-svn: 121520
 2010-12-10 20:47:03 +00:00
Jakob Stoklund Olesen
ea59381fc8 Fix miscompilation caused by trivial logic error in the reassignVReg() 
interference check.

llvm-svn: 121519
 2010-12-10 20:45:04 +00:00
Dan Gohman
b0fa0f7849 Minimally update this code to handle PartialAlias. 
llvm-svn: 121518
 2010-12-10 20:14:49 +00:00