Commit Graph

217 Commits

Author SHA1 Message Date
Gabor Greif
96f1d8ebdd mass elimination of reliance on automatic iterator dereferencing
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109103 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22 13:36:47 +00:00
Gabor Greif
a399781289 undo 80 column trespassing I caused
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109092 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-22 10:37:47 +00:00
Owen Anderson
d13db2c59c Fix batch of converting RegisterPass<> to INTIALIZE_PASS().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109045 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-21 22:09:45 +00:00
Owen Anderson
5f23a938b0 Tweak per Chris' comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108736 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19 19:23:32 +00:00
Owen Anderson
d90290127b Reimplement r108639 in InstCombine rather than DAGCombine.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108687 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-19 08:09:34 +00:00
Owen Anderson
7e3012c345 Another attempt at getting the clang self-host to like my instcombine patch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108614 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-17 06:56:35 +00:00
Owen Anderson
835d425a16 Remove the rest of my instcombine changes. Back to the drawing board on this one.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108530 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16 16:39:00 +00:00
Gabor Greif
a6aac4c5bc eliminate CallInst::ArgOffset
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108522 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16 09:38:02 +00:00
Eric Christopher
de309a8b52 Also revert 108422, it's causing some test failures.
Working on testcases for Owen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108494 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-16 01:36:12 +00:00
Owen Anderson
11acba0470 Speculatively revert r108429 to fix the clang self-host.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108436 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15 18:18:57 +00:00
Owen Anderson
40bf5e7a68 Per Chris' suggestion, get rid of the select canonicalization and just add
the corresponding or-icmp-and pattern.  This has the added benefit of doing
the matching earlier, and thus being less susceptible to being confused by
earlier transforms.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108429 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15 17:24:23 +00:00
Owen Anderson
96fe621e07 Reapply r108378, with bugfixes, testcase, and improved comment formatting.
This now passes LIT, nighty test, and llvm-gcc bootstrap on my machine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108422 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15 15:00:23 +00:00
Eli Friedman
5e84e8e52a Speculatively revert r108378; may be causing bootstrap failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108389 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-15 00:33:00 +00:00
Owen Anderson
bd129a7460 Add instcombine transforms to optimize tests of multiple bits of the same value into a single larger comparison.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108378 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-14 23:33:51 +00:00
Chris Lattner
07c9b64719 revert r108320, I see the failures now...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108322 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-14 06:16:35 +00:00
Chris Lattner
7e185af930 reapply benjamin's instcombine patch, I don't see anything wrong with it and can't repro any problems with a manual self-host.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108320 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-14 05:59:13 +00:00
Benjamin Kramer
c9fe6374b7 Nope, still breaks the release selfhost bots :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108153 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 16:38:48 +00:00
Benjamin Kramer
8fd437c43f Reapply the "or" half of r108136, which seems to be less problematic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108152 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 16:15:48 +00:00
Gabor Greif
a9b8338bfa cache result of operator*
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108150 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 15:48:26 +00:00
Benjamin Kramer
e2d07b5208 Revert r108141 again, sigh.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108148 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 14:42:04 +00:00
Gabor Greif
40119ceeec cache result of operator*
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108147 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 14:15:58 +00:00
Benjamin Kramer
98a8206e58 Reapply 108136 with an ugly pasto fixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108141 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 13:44:00 +00:00
Benjamin Kramer
ad854f0764 Move optimization to avoid redundant matching.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108140 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 13:34:22 +00:00
Benjamin Kramer
0cc4ed1ca5 Revert r108136 until I figure out why it broke selfhost.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108139 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 12:35:49 +00:00
Benjamin Kramer
4fc719e607 instcombine: fold (x & y) | (~x & z) and (x & y) ^ (~x & z) into ((y ^ z) & x) ^ z which is one instruction shorter. (PR6773)
before:
  %and = and i32 %y, %x
  %neg = xor i32 %x, -1
  %and4 = and i32 %z, %neg
  %xor = xor i32 %and4, %and

after:
  %xor1 = xor i32 %z, %y
  %and2 = and i32 %xor1, %x
  %xor = xor i32 %and2, %z


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108136 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 11:54:45 +00:00
Duncan Sands
3472766f9e Convert some tab stops into spaces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108130 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-12 08:16:59 +00:00
Gabor Greif
fc36c0f21f cache result of operator*
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107972 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-09 15:01:36 +00:00
Gabor Greif
b654435712 do not repeatedly dereference use_iterator
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-09 12:23:50 +00:00
Benjamin Kramer
1db071f0da Teach instcombine to transform
(X >s -1) ? C1 : C2 and (X <s  0) ? C2 : C1
into ((X >>s 31) & (C2 - C1)) + C1, avoiding the conditional.

This optimization could be extended to take non-const C1 and C2 but we better
stay conservative to avoid code size bloat for now.

for
int sel(int n) {
     return n >= 0 ? 60 : 100;
}

we now generate
  sarl  $31, %edi
  andl  $40, %edi
  leal  60(%rdi), %eax

instead of
  testl %edi, %edi
  movl  $60, %ecx
  movl  $100, %eax
  cmovnsl %ecx, %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-08 11:39:10 +00:00
Gabor Greif
2458513430 use getArgOperand (corrected by CallInst::ArgOffset) instead of getOperand
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107275 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-30 12:38:26 +00:00
Gabor Greif
a90c5c7605 use ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107017 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-28 16:50:57 +00:00
Gabor Greif
30d2577f64 use ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107016 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-28 16:45:00 +00:00
Gabor Greif
9c68a7bb45 use ArgOperand API (some hunks I could split)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106824 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-25 07:57:14 +00:00
Gabor Greif
caf70b31b0 use ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106752 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 16:11:44 +00:00
Gabor Greif
2f1ab74e76 use (even more, still) ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106750 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 15:51:11 +00:00
Gabor Greif
bcda85c743 use (even more) ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106744 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 13:54:33 +00:00
Gabor Greif
c310fcc909 use ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106743 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 13:42:49 +00:00
Gabor Greif
cea7ac7c01 use ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106740 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 12:58:35 +00:00
Gabor Greif
3e84e2e90f use ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106737 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 12:35:13 +00:00
Gabor Greif
916973706d use ArgOperand API, also tighten the type of visitFree to make this work out smoothly
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106736 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 12:21:15 +00:00
Gabor Greif
de9f5452d3 use ArgOperand API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106707 91177308-0d34-0410-b5e6-96231b3b80d8
2010-06-24 00:44:01 +00:00
Dan Gohman
dd9344f3fa Move FindAvailableLoadedValue isSafeToLoadUnconditionally out of
lib/Transforms/Utils and into lib/Analysis so that Analysis passes
can use them.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104949 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28 16:19:17 +00:00
Dan Gohman
05d6253727 Teach instcombine to promote alloca array sizes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104945 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28 15:09:00 +00:00
Dan Gohman
28d2e0a39f Fix instcombine's handling of alloca to accept non-i32 types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104935 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-28 04:33:04 +00:00
Duncan Sands
1d9b973fd7 Teach instCombine to remove malloc+free if malloc's only uses are comparisons
to null.  Patch by Matti Niemenmaa.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104871 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-27 19:09:06 +00:00
Dan Gohman
5b71dcedf0 Fix a missing newline in debug output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104644 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-25 21:50:35 +00:00
Duncan Sands
16d8f8bd91 I got tired of VISIBILITY_HIDDEN colliding with the gcc enum. Rename it
to LLVM_LIBRARY_VISIBILITY and introduce LLVM_GLOBAL_VISIBILITY, which is
the opposite, for future use by dragonegg.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103495 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-11 20:16:09 +00:00
Chris Lattner
6745191070 Teach instcombine to transform a bitcast/(zext|trunc)/bitcast sequence
with a vector input and output into a shuffle vector.  This sort of 
sequence happens when the input code stores with one type and reloads
with another type and then SROA promotes to i96 integers, which make
everyone sad.

This fixes rdar://7896024



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103354 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-08 21:50:26 +00:00
Chris Lattner
2d4b8ee1d9 further clarify alignment of globals, fix instcombine
to not increase the alignment of globals with an assigned
alignment and section.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102476 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-28 00:31:12 +00:00
Gabor Greif
a9b2313c13 use abstract accessors to CallInst
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101899 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-20 13:13:04 +00:00