9a196c0119
Detect that we're building from a git checkout like we do for cvs and svn.
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Based on a patch by Nicolas Trangez on the unladen-swallow mailing list!
llvm-svn: 68187
2009-04-01 04:39:25 +00:00
7e06443d44
hopefully fix an apparent build error on windows.
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llvm-svn: 68175
2009-04-01 02:03:38 +00:00
647cffba61
fix a serious regression I introduced in my previous patch.
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llvm-svn: 68173
2009-04-01 01:43:03 +00:00
ff5961b46c
Enhance GVN to propagate simple conditionals. This fixes PR3921.
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llvm-svn: 68172
2009-04-01 01:20:45 +00:00
7f1f0b03e2
include Makefile.common before using $(BuildMode) to get its definition
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llvm-svn: 68167
2009-04-01 00:35:00 +00:00
5fc1a0339c
* Fixed spelling of `invertible'
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* Simplified if statement
llvm-svn: 68163
2009-04-01 00:15:46 +00:00
a9d1032f9c
Allow the use of pointers to const within PointerUnion.
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llvm-svn: 68159
2009-03-31 23:19:54 +00:00
169b2f191d
add a converting operator
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llvm-svn: 68158
2009-03-31 23:09:51 +00:00
2d8cd80ee0
reimplement BitcodeReaderValueList in terms of WeakVH instead of making
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it be an LLVM IR User object.
llvm-svn: 68156
2009-03-31 22:55:09 +00:00
f72ce6ea8b
Make the key of ValueRankMap an AssertingVH, so that we die violently
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if it dangles.
llvm-svn: 68150
2009-03-31 22:13:29 +00:00
90234f34c6
Add two new classes: WeakVH and AssertingVH. These are both "ValueHandles",
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which are effectively smart pointers to Value*'s. They are both very light
weight and simple, and react to values being destroyed or being RAUW'd.
WeakVN does a best effort to follow a value around, including through RAUW
operations and will get nulled out of the value is destroyed. This is useful
for the eventual "metadata that references a value" work, because it is a
reference to a value that does not show up on its use_* list.
AssertingVH is a pointer that compiles down to a dumb raw pointer when
assertions are disabled. When enabled, it emits an assertion if the
pointed-to value is destroyed while it is still being referenced. This
is very useful for Maps and other things, and should have caught the recent
bugs in CallGraph and Reassociate, for example.
llvm-svn: 68149
2009-03-31 22:11:05 +00:00
e756f15703
teach PointerLikeTypeTraits that all pointers to pointers may only be 4-byte aligned.
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llvm-svn: 68147
2009-03-31 21:28:39 +00:00
e0d25e42e9
add some accessors so I can play games with DenseMaps.
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llvm-svn: 68145
2009-03-31 20:57:23 +00:00
826b6f0f7c
Throttle back "fold select into operand" transformation. InstCombine should not generate selects of two constants unless they are selects of 0 and 1.
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e.g.
define i32 @t1(i32 %c, i32 %x) nounwind {
%t1 = icmp eq i32 %c, 0
%t2 = lshr i32 %x, 18
%t3 = select i1 %t1, i32 %t2, i32 %x
ret i32 %t3
}
was turned into
define i32 @t2(i32 %c, i32 %x) nounwind {
%t1 = icmp eq i32 %c, 0
%t2 = select i1 %t1, i32 18, i32 0
%t3 = lshr i32 %x, %t2
ret i32 %t3
}
For most targets, that means materializing two constants and then a select. e.g. On x86-64
movl %esi, %eax
shrl $18, %eax
testl %edi, %edi
cmovne %esi, %eax
ret
=>
xorl %eax, %eax
testl %edi, %edi
movl $18, %ecx
cmovne %eax, %ecx
movl %esi, %eax
shrl %cl, %eax
ret
Also, the optimizer and codegen can reason about shl / and / add, etc. by a constant. This optimization will hinder optimizations using ComputeMaskedBits.
llvm-svn: 68142
2009-03-31 20:42:45 +00:00
0d551591ea
Fully general expansion of integer shift of any size.
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llvm-svn: 68134
2009-03-31 19:39:24 +00:00
d9d6e427d6
i128 shift libcalls are not available on x86.
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llvm-svn: 68133
2009-03-31 19:38:51 +00:00
6b42dfddf4
Reapply 68073, with fixes. EH Landing-pad basic blocks are not
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entered via fall-through. Don't miss fallthroughs from blocks
terminated by conditional branches. Also, move
isOnlyReachableByFallthrough out of line.
llvm-svn: 68129
2009-03-31 18:39:13 +00:00
eccc5967bf
Do not pass '-relocation-model=pic' to llc.
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Does not work well on 32 bit targets. Bug reported by Albert Graef.
This patch also adds new "-Wllc,option" syntax to pass options to llc.
llvm-svn: 68127
2009-03-31 18:33:54 +00:00
1d249d984c
Stop guessing, start thinking, and make PointerUnion3::is actually be correct.
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llvm-svn: 68126
2009-03-31 18:31:03 +00:00
6161b3ccf6
Add an explicit -asm-verbose to these tests, to make it
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possible to run the tests with -asm-verbose defaulting
to false.
llvm-svn: 68124
2009-03-31 18:20:47 +00:00
4ce6e69022
Update call graph after inlining invoke.
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Patch by Jay Foad.
llvm-svn: 68120
2009-03-31 17:36:12 +00:00
fb1a6eb69b
Add llvm::sys::getHostTriple and remove
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llvm::sys::getOS{Name,Version}.
Right now the implementation just derives from LLVM_HOSTTRIPLE (which
is wrong, but it doesn't look like we have a define for the target
triple). Ideally this routine would actually be able to compute the
triple for targets we care about.
llvm-svn: 68118
2009-03-31 17:30:15 +00:00
d51f196ff5
Minor top-level comment fix.
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llvm-svn: 68113
2009-03-31 16:51:18 +00:00
90ea62cba6
Tidy up some comments.
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llvm-svn: 68112
2009-03-31 16:48:35 +00:00
0837aa99ea
Add a comment.
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llvm-svn: 68111
2009-03-31 16:46:45 +00:00
9277379fc0
remove unused arguments.
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llvm-svn: 68109
2009-03-31 16:16:57 +00:00
6afae239c2
Really temporarily revert r68073.
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llvm-svn: 68100
2009-03-31 08:42:40 +00:00
b8017e02ca
Oy! When reverting r68073, I added in experimental code. Sorry...
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llvm-svn: 68099
2009-03-31 08:41:31 +00:00
4486c1fac0
Remove the "fast" cases for spill and restore point determination, as these were subtlely wrong in obscure cases. Patch the testcase
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to account for this change.
llvm-svn: 68093
2009-03-31 08:27:09 +00:00
c4b08e5eb0
Revert r68073. It's causing a failure in the Apple-style builds.
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llvm-svn: 68092
2009-03-31 08:26:26 +00:00
42bae59678
shrink subclassid, liberating some bits for future (ab)use.
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llvm-svn: 68087
2009-03-31 07:25:22 +00:00
97a20b8dbf
Fix live-out reg logic to not insert over-aggressive AssertZExt
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instructions. This fixes lua.
llvm-svn: 68083
2009-03-31 01:38:29 +00:00
885bc6de52
X86 address mode isel tweak. If the base of the address is also used by a CopyToReg (i.e. it's likely live-out), do not fold the sub-expressions into the addressing mode to avoid computing the address twice. The CopyToReg use will be isel'ed to a LEA, re-use it for address instead.
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This is not yet enabled.
llvm-svn: 68082
2009-03-31 01:13:53 +00:00
b874bd9f41
Really, really fix PointerUnion3::is
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llvm-svn: 68079
2009-03-31 00:34:31 +00:00
adccd30533
Except in asm-verbose mode, avoid printing labels for blocks that are
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only reachable via fall-through edges. This dramatically reduces the
number of labels printed, and thus also the number of labels the
assembler must parse and remember.
llvm-svn: 68073
2009-03-30 22:55:17 +00:00
6e68bd007a
Loop Index Split can eliminate a loop if it can determin if loop body is executed only once. There was a bug in determining IV based value of the iteration for which the loop body is executed. Fix it.
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llvm-svn: 68071
2009-03-30 22:24:10 +00:00
d33a33cedb
Make PointerUnion3::get work properly
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llvm-svn: 68067
2009-03-30 21:44:13 +00:00
a84a318873
When optimzing a mul by immediate into two, the resulting mul's should get a x86 specific node to avoid dag combiner from hacking on them further.
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llvm-svn: 68066
2009-03-30 21:36:47 +00:00
09f5be8146
Turn a 2-address instruction into a 3-address one when it's profitable even if the two-address operand is killed.
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e.g.
%reg1024<def> = MOV r1
%reg1025<def> = ADD %reg1024, %reg1026
r0 = MOV %reg1025
If it's not possible / profitable to commute ADD, then turning ADD into a LEA saves a copy.
llvm-svn: 68065
2009-03-30 21:34:07 +00:00
32f4959ee4
update comment.
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llvm-svn: 68060
2009-03-30 20:44:04 +00:00
2f52e6488f
Balance out quote in debug output.
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llvm-svn: 68059
2009-03-30 20:32:22 +00:00
5f0d97c571
Fix grammar-o in comment.
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llvm-svn: 68057
2009-03-30 20:30:02 +00:00
8aa8f5bf6a
add a PointerUnion3 class and generalize PointerUnion to work with
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anything pointer-like, which may or may not actually be a pointer.
llvm-svn: 68056
2009-03-30 20:29:27 +00:00
73acaa8862
fix the PointerLikeTypeTraits specialization for PointerIntPair to
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allow the traits to be specified as well.
llvm-svn: 68055
2009-03-30 20:28:50 +00:00
ff62c62b7c
Constify arguments in isSuccessor and isLayoutSuccessor.
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llvm-svn: 68054
2009-03-30 20:06:29 +00:00
d3899dc52f
Update the polygen grammer to reflect that zext and sext are no longer
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valid argument attributes (zeroext and signext are).
llvm-svn: 68053
2009-03-30 19:59:02 +00:00
169927e7ef
docs/TestingGuide.html: correction to prev. text (objdir!=srcdir required for running test-suite), removed refs to llvm-test
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llvm-svn: 68051
2009-03-30 18:56:53 +00:00
57178e8822
Fix comment to match function name.
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llvm-svn: 68050
2009-03-30 18:49:37 +00:00
7a78f3abd3
getEntryFor() may invalidate DenseMap iterator.
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Walking an invalidated iterator is not a good idea.
llvm-svn: 68047
2009-03-30 18:34:47 +00:00
9d98cc6b93
Add ccc back for now.
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llvm-svn: 68038
2009-03-30 17:43:04 +00:00
Nick Lewycky