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c22d4d1500
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892 Commits

Author SHA1 Message Date
Chris Lattner
c22d4d1500 unify the code that determines whether it is a good idea to change the type 
of a computation.  This fixes some infinite loops when dealing with TD that
has no native types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86670 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-10 07:23:37 +00:00
Chris Lattner
7e606e2e98 if a 'with overflow' intrinsic just has the normal result used, simplify 
it to a normal binop.  Patch by Alastair Lynn, testcase by me.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86524 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 07:07:56 +00:00
Chris Lattner
dd21a1cba4 enhance PHI slicing to handle the case when a slicable PHI is begin 
used by a chain of other PHIs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86503 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-09 01:38:00 +00:00
Chris Lattner
bf382b5f74 Teach an instcombine to not pull trunc instructions through PHI nodes 
when both the source and dest are illegal types, since it would cause
the phi to grow (for example, we shouldn't transform test14b's phi to
a phi on i320).  This fixes an infinite loop on i686 bootstrap with
phi slicing turned on, so turn it back on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86483 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-08 21:20:06 +00:00
Chris Lattner
9956c056c1 reapply r8644[3-5] with only the scary part 
(SliceUpIllegalIntegerPHI) disabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86480 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-08 19:23:30 +00:00
Daniel Dunbar
d11a7c3b03 Speculatively revert r8644[3-5], they seem to be leading to infinite loops in 
llvm-gcc bootstrap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86478 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-08 17:52:47 +00:00
Chris Lattner
ce306a450f another more interesting test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86445 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-08 08:36:40 +00:00
Chris Lattner
04ab669d0b feature test for the new transformation in r86443 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86444 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-08 08:30:58 +00:00
Chris Lattner
91114966b1 teach a couple of instcombine transformations involving PHIs to 
not turn a PHI in a legal type into a PHI of an illegal type, and
add a new optimization that breaks up insane integer PHI nodes into
small pieces (PR3451).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86443 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-08 08:21:13 +00:00
Chris Lattner
918871ee01 make instcombine only rewrite a chain of computation 
(eliminating some extends) if the new type of the
computation is legal or if both the source and dest
are illegal.  This prevents instcombine from changing big
chains of computation into i64 on 32-bit targets for 
example.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86398 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-07 19:11:46 +00:00
Chris Lattner
092543ca71 move two functions up higher in the file. Delete a useless argument 
to EmitGEPOffset.  

Implement some new transforms for optimizing 
subtracts of two pointer to ints into the same vector.  This happens
for C++ iterator idioms for example, stringmap takes a const char*
that points to the start and end of a string.  Once inlined, we want
the pointer difference to turn back into a length.

This is rdar://7362831.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86021 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 08:05:20 +00:00
Chris Lattner
6a4ab1e426 filecheckize this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86020 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-04 07:57:05 +00:00
Kenneth Uildriks
b908f8ad6a Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85900 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-03 15:29:06 +00:00
Chris Lattner
7ebbabf500 fix instcombine to only do store sinking when the alignments 
of the two loads agree.  Propagate that onto the new store.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85772 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:06:37 +00:00
Chris Lattner
f013eea972 merge a test into store.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85771 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 02:00:18 +00:00
Chris Lattner
f7956621ee convert to filecheck 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85770 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-02 01:58:03 +00:00
Chris Lattner
213a8d3a48 merge phi-merge.ll into phi.ll 
I don't know what Dan wants to do with phi-merge-gep.ll, I'll let
him deal with it because instcombine may end up sinking these.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85739 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 20:10:11 +00:00
Chris Lattner
a664bb7bdc when merging two loads, make sure to take the min of their alignment, 
not the max.  This didn't matter until the previous patch because
instcombine would refuse to sink loads with differenting alignments.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85738 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 20:07:07 +00:00
Chris Lattner
e3c6281a98 fix a bug noticed by inspection: when instcombine sinks loads through 
phis, it didn't preserve the alignment of the load.  This is a missed
optimization of the alignment is high and a miscompilation when the
alignment is low.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85736 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 19:50:13 +00:00
Chris Lattner
c7e4e6edc4 convert to filecheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85734 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-11-01 19:22:20 +00:00
Edward O'Callaghan
d2d438e58d Convert a few tests to FileCheck for PR5307. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85171 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 22:52:03 +00:00
Dan Gohman
fe3595555a Code that checks WillNotOverflowSignedAdd before creating an Add 
can safely use the NSW bit on the Add.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85164 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 22:14:22 +00:00
Chris Lattner
48b59ec817 reapply r85085 with a bugfix to avoid infinite looping. 
All of the 'demorgan' related xforms need to use 
dyn_castNotVal, not m_Not.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85119 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 15:40:07 +00:00
Evan Cheng
85def16079 Revert 85085. It causes infinite looping during llvm-gcc build. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85090 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 03:51:32 +00:00
Chris Lattner
863928fc39 Implement PR3266 & PR5276, folding: 
not (or (icmp, icmp)) -> and(icmp, icmp)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85085 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-26 01:06:31 +00:00
Chris Lattner
f2b4854e3f convert or.ll to filecheck and merge or2 into it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85083 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-25 23:47:55 +00:00
Victor Hernandez
66284e063a Auto-upgrade free instructions to calls to the builtin free function. 
Update all analysis passes and transforms to treat free calls just like FreeInst.
Remove RaiseAllocations and all its tests since FreeInst no longer needs to be raised.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84987 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-24 04:23:03 +00:00
Chris Lattner
7f23958aa4 fix PR5262. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84810 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-22 00:17:26 +00:00
Chris Lattner
857eb5793e revert r84754, it isn't the right approach. Edwin, please propose 
patches for fixes like this instead of committing them directly.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84799 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-21 23:41:58 +00:00
Victor Hernandez
68afa54033 Make changes to rev 84292 as requested by Chris Lattner. 
Most changes are cleanup, but there is 1 correctness fix:
I fixed InstCombine so that the icmp is removed only if the malloc call is removed (which requires explicit removal because the Worklist won't DCE any calls since they can have side-effects).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84772 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-21 19:11:40 +00:00
Torok Edwin
0739bd0ab2 Fix PR5262: when folding select into PHI, make sure all operands are available 
in the PHI's Basic Block. This uses a conservative approach, because we don't
have dominator info in instcombine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84754 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-21 10:49:00 +00:00
Chris Lattner
1c79be9dcd remove a now-pointless regtest 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84409 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-18 05:20:17 +00:00
Victor Hernandez
13ad5aaaff Autoupgrade malloc insts to malloc calls. 
Update testcases that rely on malloc insts being present.

Also prematurely remove MallocInst handling from IndMemRemoval and RaiseAllocations to help pass tests in this incremental step.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84292 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-17 00:00:19 +00:00
Chris Lattner
8db2cd1fc7 make instcombine's instruction sinking more aggressive in the 
presence of PHI nodes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84103 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-14 15:21:58 +00:00
Edward O'Callaghan
d75d267367 Missing CHECK: lines makes test exit abnormally. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83835 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-12 09:01:26 +00:00
Edward O'Callaghan
2a4bea5262 FileCheck not CheckFile, oops. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83834 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-12 08:51:28 +00:00
Edward O'Callaghan
5464547c02 Convert InstCombine/call.ll to CheckFile. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83833 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-12 08:46:47 +00:00
Edward O'Callaghan
7aeb9b5e4c Convert the rest of the InstCombine tests from notcast to FileCheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83828 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-12 07:18:14 +00:00
Nick Lewycky
a457ba09f7 Remove this part of the test, it never actually tested anything anyways. This 
unbreaks make check after evocallaghan's changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83827 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-12 06:32:42 +00:00
Edward O'Callaghan
60ea2c5a18 Fix syntax error missed in converting zext.ll test. Convert 2003-11-13-ConstExprCastCall.ll to FileCheck from notcast. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83826 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-12 06:23:56 +00:00
Edward O'Callaghan
853075e762 Convert InstCombine tests from notcast to FileCheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83825 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-12 06:14:06 +00:00
Chris Lattner
0a11939fe8 reduce vec_shuffle2 and merge into vec_shuffle. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83807 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 22:54:48 +00:00
Chris Lattner
98d59dfbb6 filecheckize vec_shuffle.ll and merge shuffle.ll into it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83806 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 22:52:15 +00:00
Chris Lattner
588c490aad filecheckize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83805 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 22:45:17 +00:00
Chris Lattner
a01752920e rename test 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83804 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 22:44:16 +00:00
Chris Lattner
ee07e715ff remove old testcase 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83803 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 22:42:06 +00:00
Chris Lattner
90d4f3a077 merge test into shift.ll, this also eliminates awful grepping on -stats output 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83802 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 22:39:58 +00:00
Chris Lattner
490ff6310a convert to filecheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83801 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 22:36:59 +00:00
Chris Lattner
d088314998 teach instcombine to simplify xor's harder, catching the 
new testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83799 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 22:22:13 +00:00
Chris Lattner
833f0cc57f convert xor2 to filecheck, merge in a random regtest 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83796 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-10-11 21:42:08 +00:00