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Author SHA1 Message Date
Devang Patel
a3ee3ef71b Speculatively revert r124138. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124142 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 20:04:37 +00:00
Rafael Espindola
59b8cf4512 Jörg Sonnenberger noticed that we were missing this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124139 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 19:40:38 +00:00
Devang Patel
224a180d11 Resolve DanglingDbgValue of PHI nodes where the use follows dbg.value intrinisic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124138 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 19:24:37 +00:00
Andrew Trick
c48d50f9c0 Temporarily workaround JM/lencod miscompile (SIGSEGV). 
rdar://problem/8893967


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124137 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 19:08:15 +00:00
Dan Gohman
bd1801b555 Give GetUnderlyingObject a TargetData, to keep it in sync 
with BasicAA's DecomposeGEPExpression, which recently began
using a TargetData. This fixes PR8968, though the testcase
is awkward to reduce.

Also, update several off GetUnderlyingObject's users
which happen to have a TargetData handy to pass it in.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124134 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 18:53:32 +00:00
Chris Lattner
0e3fae27a1 fix PR8928 by clearing a stale map, patch by Jakub Staszak! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124132 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 18:36:51 +00:00
Duncan Sands
1f59e09c9a Testcase for dragonegg commit 124128. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124129 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 18:04:33 +00:00
Rafael Espindola
184640e96e Handle strings in section names the same way as gas: 
* If the name is a single string, we remove the quotes
* If the name starts without a quote, we include any quotes in the name

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124127 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 18:02:54 +00:00
Dan Gohman
a3bbf2411f Add a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124126 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 17:54:18 +00:00
Dan Gohman
640b9c8fe2 Add another rdar number. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124125 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 17:54:01 +00:00
Daniel Dunbar
c98d82a7f0 Support/CommandLine: Fix LookupNearestOption to also search extra option names. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124124 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 17:27:17 +00:00
Chris Lattner
ccea167db5 fix a missing shuffle pattern, PR9009. Patch by Artiom Myaskouvskey! 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124102 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 03:42:46 +00:00
Chris Lattner
850bdd2fcc merge all the "crash tests" into crash.ll 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124101 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 03:37:34 +00:00
Chris Lattner
867be59684 fix PR9017, a bug where we'd assert when promoting in unreachable 
code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124100 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 03:29:07 +00:00
Chris Lattner
51e62f0f73 fix PR9015, a crash linking recursive metadata. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124099 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 03:18:24 +00:00
Chris Lattner
96c0771c01 this isn't a memset, we do convert dest[i] to one though :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124097 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 02:32:00 +00:00
Chris Lattner
7ea7d32de6 with recent work, we now optimize this into: 
define i32 @foo(i32 %x) nounwind readnone ssp {
entry:
  %tobool = icmp eq i32 %x, 0
  %tmp5 = select i1 %tobool, i32 2, i32 1
  ret i32 %tmp5
}



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124091 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 01:12:18 +00:00
Chris Lattner
e3357863aa enhance SRoA to promote allocas that are used by PHI nodes. This often 
occurs because instcombine sinks loads and inserts phis.  This kicks in 
on such apps as 175.vpr, eon, 403.gcc, xalancbmk and a bunch of times in
spec2006 in some app that uses std::deque.

This resolves the last of rdar://7339113.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124090 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-24 01:07:11 +00:00
Chris Lattner
c87c50a39c Enhance SRoA to promote allocas that are used by selects in some 
common cases.  This triggers a surprising number of times in SPEC2K6
because min/max idioms end up doing this.  For example, code from the
STL ends up looking like this to SRoA:

  %202 = load i64* %__old_size, align 8, !tbaa !3
  %203 = load i64* %__old_size, align 8, !tbaa !3
  %204 = load i64* %__n, align 8, !tbaa !3
  %205 = icmp ult i64 %203, %204
  %storemerge.i = select i1 %205, i64* %__n, i64* %__old_size
  %206 = load i64* %storemerge.i, align 8, !tbaa !3

We can now promote both the __n and the __old_size allocas.

This addresses another chunk of rdar://7339113, poor codegen on
stringswitch.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124088 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 22:04:55 +00:00
Chris Lattner
3928af6ac4 teach Value::isDereferenceablePointer that byval arguments are always 
dereferencable, noticed by inspection.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124085 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 21:15:29 +00:00
Anders Carlsson
f330b3227a Add a memset loop that LoopIdiomRecognize doesn't recognize. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124082 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 20:31:00 +00:00
Nick Lewycky
76167af9b1 Simplify some code with no functionality change. Make the test a lot more 
robust against smarter optimizations, using the power of FileCheck.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124081 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 20:06:05 +00:00
Rafael Espindola
dd0dfdf8be Initialize MCNoExecStack. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124079 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 18:50:12 +00:00
Rafael Espindola
96aa78c8c5 Add support for the --noexecstack option. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124077 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 17:55:27 +00:00
Ted Kremenek
584520e8e2 Null initialize a few variables flagged by 
clang's -Wuninitialized-experimental warning.
While these don't look like real bugs, clang's
-Wuninitialized-experimental analysis is stricter
than GCC's, and these fixes have the benefit
of being general nice cleanups.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124073 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 17:05:06 +00:00
Rafael Espindola
54104db434 Add support for lowercase variants. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124071 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 16:11:25 +00:00
Chris Lattner
145c532e68 Enhance SRoA to be more aggressive about scalarization of aggregate allocas 
that have PHI or select uses of their element pointers.  This can often happen
when instcombine sinks two loads into a successor, inserting a phi or select.

With this patch, we can scalarize the alloca, but the pinned elements are not
yet promoted.  This is still a win for large aggregates where only one element
is used.  This fixes rdar://8904039 and part of rdar://7339113 (poor codegen
on stringswitch).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124070 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 08:27:54 +00:00
Cameron Zwarich
491d8d4370 Convert two std::vectors to SmallVectors for a 3.4% speedup running -scalarrepl 
on test-suite + SPEC2000 & SPEC2006.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124068 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 08:03:04 +00:00
Chris Lattner
6c95d24927 have AllocaInfo store the alloca being inspected, simplifying callers. 
No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124067 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 07:29:29 +00:00
Chris Lattner
d01a0da090 Rearrange some code a bit. Change MarkUnsafe to 
handle the "Transformation preventing inst" printing, 
so that -scalarrepl -debug will always print the rejected
instruction.  No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124066 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 07:05:44 +00:00
Cameron Zwarich
55be644df6 Convert a std::vector to a SmallVector for another 5.4% speedup on domtree. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124065 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 06:54:22 +00:00
Chris Lattner
85a7c69085 remove an old hack that avoided creating MMX datatypes. The 
X86 backend has been fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124064 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 06:40:33 +00:00
Nick Lewycky
630d85a78c Use value ranges to fold ext(trunc) in SCEV when possible. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124062 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 06:20:19 +00:00
Cameron Zwarich
54cdad97eb In the simpler version of the link-eval data structure that we use in dominator 
computation, the Ancestor field is always set to the Parent, so we can remove
the explicit link entirely and merge the Parent and Ancestor fields. Instead of
checking for whether an ancestor exists for a node or not, we simply check
whether the node has already been processed. This is simpler if Compress is
inlined into Eval, so I did that as well.

This is about a 3% speedup running -domtree on test-suite + SPEC2000 & SPEC2006,
but it also opens up some opportunities for further improvement.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124061 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 06:16:06 +00:00
Rafael Espindola
0cf5e3d51d Delay the creation of eh_frame so that the user can change the defaults. 
Add support for SHT_X86_64_UNWIND.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124059 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 05:43:40 +00:00
Cameron Zwarich
11e222da1f Remove useless struct fields. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124058 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 05:11:18 +00:00
Cameron Zwarich
53e069ffab Remove friend declaration for removed function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124057 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 04:54:34 +00:00
Rafael Espindola
1c13026e8f Remove more duplicated code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124056 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 04:43:11 +00:00
Cameron Zwarich
907b56ce7a Convert a std::vector to a SmallVector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124055 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 04:30:59 +00:00
Rafael Espindola
c85dca66e6 Remove duplicated code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124054 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 04:28:49 +00:00
Cameron Zwarich
5c96c69161 Simplify some code now that we've removed the more optimal (but slower) version 
of the link-eval data structure from dominator computation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124053 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-23 04:13:53 +00:00
Nick Lewycky
9b8d2c26bc Have SCEV turn sext(x) into zext(x) when x is s>= 0. This applies many times in 
"make check" alone.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124046 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-22 22:06:21 +00:00
Eric Christopher
7ea118de46 Add a FIXME explaining the move to a single indirect call bonus per function 
that we can change from indirect to direct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124045 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-22 21:56:53 +00:00
Eric Christopher
7020f12ee8 Only apply the devirtualization bonus once instead of per-call site in the 
target function.

Fixes part of rdar://8546196


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124044 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-22 21:17:33 +00:00
Venkatraman Govindaraju
8184e289db Pass sret arguments through the stack instead of through registers in Sparc backend. It makes the code generated more compliant with the sparc32 ABI. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124030 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-22 13:05:16 +00:00
Benjamin Kramer
ecb89fd06c Remove dead ivar. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124028 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-22 12:13:28 +00:00
Venkatraman Govindaraju
e105a3901f Added ICC, FCC as uses of movcc instruction to generate correct code when -mattr=v9 is used. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124027 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-22 11:36:24 +00:00
Bill Wendling
0ef755d905 ARM uses '.' in their tokens. Give it a name instead of a numeric value. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124026 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-22 09:44:32 +00:00
Chris Lattner
b83e60e602 add DW_TAG for rvalue refs. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@124019 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-22 01:47:25 +00:00
Dan Gohman
8fb25c53bd Actually check memcpy lengths, instead of just commenting about 
how they should be checked.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123999 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-01-21 22:07:57 +00:00