Chris Lattner
8b0cb7bcc6
This readme entry is done, testcase here: CodeGen/X86/zero-remat.ll
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47106 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-14 05:39:46 +00:00
Nick Lewycky
1d1ef14248
PR2027, Fix bugpoint's -find-bugs option, clean up the code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47105 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-14 05:01:46 +00:00
Evan Cheng
5598b70a78
Fix test.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47102 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-14 01:32:53 +00:00
Dan Gohman
d9fe41c0c8
Allow the APInt form of ComputeMaskedBits to operate on i128 types.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47101 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 23:13:32 +00:00
Dan Gohman
f4f92f5ebe
Assigning an APInt to 0 with plain assignment gives it a one-bit
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size. Initialize these APInts to properly-sized zero values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47099 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 23:07:24 +00:00
Dan Gohman
72d2fd57b6
Avoid setting bits that aren't demanded.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47098 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 22:43:25 +00:00
Dan Gohman
cd2ad1df5d
Fix a typo in a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47097 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 22:32:12 +00:00
Dan Gohman
977a76fbb6
Simplify some logic in ComputeMaskedBits. And change ComputeMaskedBits
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to pass the mask APInt by value, not by reference.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47096 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 22:28:48 +00:00
Devang Patel
ea06906559
A loop latch phi node may have uses inside loop, not just in loop header.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47093 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 22:23:07 +00:00
Dan Gohman
7649127ec1
Rename APInt's isPositive to isNonNegative, to reflect what it
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actually does.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47090 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 22:09:18 +00:00
Devang Patel
23067dfeac
While moving exit condition, do not drop loop latch on the floor.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47089 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 22:06:36 +00:00
Dan Gohman
42dd77f207
Add countTrailingOnes member functions to APInt.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47086 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 21:11:05 +00:00
Dan Gohman
b5cfaaedbe
Fix a typo in a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47085 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 20:56:53 +00:00
Dan Gohman
ca2a0e1062
Add count{Leading,Trailing}Ones_{32,64} functions with simple implementations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47084 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 20:54:54 +00:00
Devang Patel
02c4836f3d
Keep track of exit value operand number when operands are swapped.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47082 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 19:48:48 +00:00
Nicolas Geoffray
afe6c2b001
Enable exception handling int JIT
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47079 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 18:39:37 +00:00
Dale Johannesen
84ad8378ee
New test, see comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47078 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 18:36:48 +00:00
Duncan Sands
d462ba8539
Teach LegalizeTypes how to expand and promote CTLZ,
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CTTZ and CTPOP. The expansion code differs from
that in LegalizeDAG in that it chooses to take the
CTLZ/CTTZ count from the Hi/Lo part depending on
whether the Hi/Lo value is zero, not on whether
CTLZ/CTTZ of Hi/Lo returned 32 (or whatever the
width of the type is) for it. I made this change
because the optimizers may well know that Hi/Lo
is zero and exploit it. The promotion code for
CTTZ also differs from that in LegalizeDAG: it
uses an "or" to get the right result when the
original value is zero, rather than using a compare
and select. This also means the value doesn't
need to be zero extended.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47075 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 18:01:53 +00:00
Chris Lattner
82f0a09c10
gcc 3.2.3 is also bad.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47073 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 17:50:24 +00:00
Chris Lattner
a1998d1cba
Fix the PPC JIT regressions by encoding zeroreg as 0 for BLR.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47067 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 17:24:14 +00:00
Chris Lattner
eedcf3fc46
remove some dead code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47066 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 17:18:26 +00:00
Devang Patel
e45252efee
Remove use of ltdl
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47065 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 17:11:39 +00:00
Duncan Sands
20dcb4c24d
Add notes on Ada compilers that can be used for
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the build. Put all items that the user should
specify in bold. Make it a debug build.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47063 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 16:46:10 +00:00
Wojciech Matyjewicz
a65ee03bb2
Fix typo. Thanks to Duncan for noticing.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47062 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 12:21:32 +00:00
Wojciech Matyjewicz
3a4cbe2a41
Add comments as per review feedback.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47061 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 11:51:34 +00:00
Evan Cheng
cdbcfccece
Some code clean up.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47060 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 09:56:03 +00:00
Evan Cheng
b1f6f91393
Simplify.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47059 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 09:18:16 +00:00
Evan Cheng
9cec00e7f1
Simplify.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47058 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 09:13:21 +00:00
Evan Cheng
e984e504b5
Fix a potential serious problem where kills belonging to the val# defined by a two-address instruction is also on the val# that defines the input.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47057 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 09:06:18 +00:00
Evan Cheng
e35a6d1dfb
* Cannot safely commute an instruction there are other defs which can reach its uses.
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* Ignore copy instructions which have already been coalesced.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47056 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 08:41:08 +00:00
Eli Friedman
35327b3e57
Add a note pointing to PR1996.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47055 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 07:56:04 +00:00
Chris Lattner
86ca3cacc5
In SDISel, for targets that support FORMAL_ARGUMENTS nodes, lower this
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node as soon as we create it in SDISel. Previously we would lower it in
legalize. The problem with this is that it only exposes the argument
loads implied by FORMAL_ARGUMENTs after legalize, so that only dag combine 2
can hack on them. This causes us to miss some optimizations because
datatype expansion also happens here.
Exposing the loads early allows us to do optimizations on them. For example
we now compile arg-cast.ll to:
_foo:
movl $2147483647, %eax
andl 8(%esp), %eax
ret
where we previously produced:
_foo:
subl $12, %esp
movsd 16(%esp), %xmm0
movsd %xmm0, (%esp)
movl $2147483647, %eax
andl 4(%esp), %eax
addl $12, %esp
ret
It might also make sense to do this for ISD::CALL nodes, which have implicit
stores on many targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47054 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 07:39:09 +00:00
Chris Lattner
9f72d1a730
don't try to avoid inserting loads when lowering FORMAL_ARGUMENTS.
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DAGCombine is now quite good at zapifying them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47053 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 07:35:30 +00:00
Chris Lattner
fec42eb6da
teach dag combiner how to eliminate MERGE_VALUES nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47052 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 07:25:05 +00:00
Nate Begeman
b5041b3085
readme updates
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47051 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 07:06:12 +00:00
Eli Friedman
261c704da1
Add test for PR1996. (This is my first time adding a test for a
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transform, so please review.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47050 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 06:55:57 +00:00
Nate Begeman
5e1dd5597e
Add testcase for recent legalizer change
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47049 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 06:48:40 +00:00
Nate Begeman
0325d90348
Support legalizing insert_vector_elt on targets where the element
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type is not legal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47048 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 06:43:04 +00:00
Evan Cheng
b2e72b0feb
New tests.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47047 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 03:23:53 +00:00
Evan Cheng
70071434ae
Initial support for copy elimination by commuting its definition MI.
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PR1877.
A3 = op A2 B0<kill>
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B1 = A3 <- this copy
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= op A3 <- more uses
==>
B2 = op B0 A2<kill>
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B1 = B2 <- now an identify copy
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= op B2 <- more uses
This speeds up FreeBench/neural by 29%, Olden/bh by 12%, oopack_v1p8 by 53%.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47046 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 03:01:43 +00:00
Nate Begeman
ba8d51c1d7
Make register scavenging happy by not using a reg (CR0) that isn't defined
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47045 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 02:58:33 +00:00
Evan Cheng
d2b8d7bc51
- Added removeValNo() to remove all live ranges of a particular value#.
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- removeRange() can now update value# information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47044 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 02:48:26 +00:00
Evan Cheng
a4d16a1f0d
commuteInstr() can now commute non-ssa machine instrs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47043 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 02:46:49 +00:00
Evan Cheng
1eb5cf9c7d
Added debugging routine dumpUses.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47042 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 02:45:38 +00:00
Dan Gohman
fd29e0eb06
Convert SelectionDAG::ComputeMaskedBits to use APInt instead of uint64_t.
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Add an overload that supports the uint64_t interface for use by clients
that haven't been updated yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47039 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-13 00:35:47 +00:00
Dale Johannesen
3006c39e3a
__DATA not __DATA__ is the right segment name on darwin.
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Spotted by Nick Kledzik.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47037 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-12 23:35:09 +00:00
Nate Begeman
bf1caa9854
Remove some dead code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47036 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-12 22:54:40 +00:00
Nate Begeman
cdd1eeca2c
SSE4.1 64b integer insert/extract pattern support
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Move formats into the formats file
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47035 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-12 22:51:28 +00:00
Dan Gohman
ffe3e2514a
Change APInt::getBitsSet to accept a "half-open" range, where the
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hiBit parameter marks the index one past the last desired set bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47032 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-12 21:47:33 +00:00
Duncan Sands
caf4fbd5df
Note that these instructions are for x86-32 linux
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(the only platform on which the Ada compiler even
builds).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47031 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-12 21:40:21 +00:00