Evan Cheng
a0479e5332
Allow -inline-threshold override default threshold even if compiling to optimize for size.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83274 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-04 06:13:54 +00:00
Douglas Gregor
8f3ec31133
Remove GVNPRE.cpp from the CMake makefile
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83194 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-01 05:30:05 +00:00
Chris Lattner
99be299edb
remove the GVNPRE pass. It has been subsumed by the GVN pass.
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Ok'd by Owen.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83193 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-01 02:18:36 +00:00
Dan Gohman
5184635eda
Fix this code so that it doesn't try to iterate through a std::vector
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while calling changeImmediateDominator, which removes elements from the
vector. This fixes PR5097.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83166 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-30 20:54:16 +00:00
Dan Gohman
2d5dfd94e5
Remove a redundant #ifndef and add an assertion string.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82991 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28 14:38:19 +00:00
Dan Gohman
d84db11333
Convert LoopSimplify and LoopExtractor from FunctionPass to LoopPass.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82990 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28 14:37:51 +00:00
Chris Lattner
3ddfb21306
The select instruction is not neccesarily in the same block as the
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phi nodes. Make sure to phi translate from the right block.
This fixes a llvm-building-llvm failure on GVN-PRE.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82970 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-28 06:49:44 +00:00
Chris Lattner
9b1de95593
simplify some code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82936 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 21:46:50 +00:00
Chris Lattner
42ebefae8e
The bitcast case is not needed here: instcombine turns icmp(bitcast(x), null) -> icmp(x, null) already.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82935 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 21:42:46 +00:00
Chris Lattner
06e4052699
calls are already unmovable, malloc doesn't need a special case.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82933 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 21:36:19 +00:00
Chris Lattner
32c0d2255f
calls to external functions are already marked overdefined, special casing
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malloc isn't needed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82932 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 21:35:11 +00:00
Chris Lattner
4412d04876
calls are already handled, malloc doesn't need a special case.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82931 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 21:33:46 +00:00
Chris Lattner
68b1bbbc55
calls are rejected above, no need to special case malloc here.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82929 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 21:31:39 +00:00
Chris Lattner
439044f4f9
remove special handling of bitcast(malloc), it will be handled
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when the loop inspects the bitcast operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82928 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 21:29:28 +00:00
Chris Lattner
2a9325ff2f
unlike the malloc instruction, "malloc" calls do not claim to be readonly, just nounwind.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82927 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 21:23:38 +00:00
Chris Lattner
213cd61fa7
allow pushing icmps through phis with multiple uses and across critical edges.
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These are important to push up to encourage jump threading. This shrinks 176.gcc a bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82923 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 20:46:36 +00:00
Chris Lattner
c6df8f4d5f
Enhance the previous fix for PR4895 to allow more values than just
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simple constants for the true/false value of the select. We now
do phi translation etc. This really fixes PR4895 :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82917 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 20:18:49 +00:00
Chris Lattner
5d1704ddbf
implement PR4895, by making FoldOpIntoPhi handle select conditions
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that are phi nodes. Also tighten up FoldOpIntoPhi to treat constantexpr
operands to phis just like other variables, avoiding moving constantexpr
computations around.
Patch by Daniel Dunbar.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82913 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 19:57:57 +00:00
Dan Gohman
f37cfed791
Grab an LLVM Context from an instruction that exists rather than one
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that is deleted in some situations. This fixes a use-after-free.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82903 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 16:10:30 +00:00
Dan Gohman
e6fe67b2fb
Tell ScalarEvolution to forget everything it knows about a loop before
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rotating the loop, since loop rotation is a very significant change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82901 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 15:37:03 +00:00
Nick Lewycky
6776064d19
Instruction::clone does not need to take an LLVMContext&. Remove that and
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update all the callers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82889 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-27 07:38:41 +00:00
Dan Gohman
76926b6789
Fix SimplifyLibCalls to transfer attributes from callees rather than
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calls, since direct calls don't always reflect the attributes of their
callees.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82867 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-26 18:10:13 +00:00
Dan Gohman
a23643d5b7
Rename ConstantFP's getInf to getInfinity.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82823 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25 23:40:21 +00:00
Dan Gohman
79cb840136
Transform pow(x, 0.5) to (x == -inf ? inf : fabs(sqrt(x))), which is
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typically faster then doing a general pow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82819 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-25 23:10:17 +00:00
Torok Edwin
c338499525
Constant propagating byval pointer is safe if function is readonly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82700 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-24 18:33:42 +00:00
Torok Edwin
30a94e3b42
Don't constant propagate byval pointers, since they are not really pointers, but
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rather structs passed by value.
This fixes PR5038.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82689 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-24 09:47:18 +00:00
Dale Johannesen
d5405a67d5
A minor improvment in accuracy to inline cost
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computation, and some cosmetics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82660 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-23 22:05:24 +00:00
Chris Lattner
2b723a5e3d
tidy up
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82488 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 22:26:02 +00:00
Chris Lattner
19ad784dac
big endian systems shift by bits too, hopefully this will fix the ppc
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bootstrap problems.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82464 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 17:55:47 +00:00
Dan Gohman
471fbf9949
Nick pointed out that DominanceFrontier and DominanceTree are preserved
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by setPreservesCFG().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82463 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 17:54:42 +00:00
Dan Gohman
5ee98e8713
Remove the special-case for constants in PHI nodes; it's not really
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helpful, and it didn't correctly handle the case of constants input
to PHIs for backedges.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82462 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 17:53:35 +00:00
Chris Lattner
8b2bc3d574
fix PR5016, a crash I introduced in GVN handing first class
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arrays and structs, which cannot be bitcast to integers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82460 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 17:24:04 +00:00
Chris Lattner
4fbd14e80e
enable non-local analysis and PRE of large store -> little load.
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This doesn't kick in too much because of phi translation issues,
but this can be resolved in the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82447 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 06:48:08 +00:00
Chris Lattner
879135145f
convert an std::pair to an explicit struct.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82446 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 06:30:24 +00:00
Chris Lattner
ca74940fee
move some functions, add a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82444 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 06:24:16 +00:00
Chris Lattner
1ce0829e83
split HandleLoadFromClobberingStore in two pieces: one that does the
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analysis, one that does the xform.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82443 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 06:22:46 +00:00
Chris Lattner
eed919b1ba
Improve GVN to be able to forward substitute a small load
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from a piece of a large store when both are in the same block.
This allows clang to compile the testcase in PR4216 to this code:
_test_bitfield:
movl 4(%esp), %eax
movl %eax, %ecx
andl $-65536, %ecx
orl $32962, %eax
andl $40186, %eax
orl %ecx, %eax
ret
This is not ideal, but is a whole lot better than the code produced
by llvm-gcc:
_test_bitfield:
movw $-32574, %ax
orw 4(%esp), %ax
andw $-25350, %ax
movw %ax, 4(%esp)
movw 7(%esp), %cx
shlw $8, %cx
movzbl 6(%esp), %edx
orw %cx, %dx
movzwl %dx, %ecx
shll $16, %ecx
movzwl %ax, %eax
orl %ecx, %eax
ret
and dramatically better than that produced by gcc 4.2:
_test_bitfield:
pushl %ebx
call L3
"L00000000001$pb":
L3:
popl %ebx
movl 8(%esp), %eax
leal 0(,%eax,4), %edx
sarb $7, %dl
movl %eax, %ecx
andl $7168, %ecx
andl $-7201, %ebx
movzbl %dl, %edx
andl $1, %edx
sall $5, %edx
orl %ecx, %ebx
orl %edx, %ebx
andl $24, %eax
andl $-58336, %ebx
orl %eax, %ebx
orl $32962, %ebx
movl %ebx, %eax
popl %ebx
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82439 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 05:57:11 +00:00
Chris Lattner
b2412a8bec
formatting cleanups, no functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82426 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-21 02:42:51 +00:00
Chris Lattner
771a5422e1
Move CoerceAvailableValueToLoadType earlier in GVN.cpp. Hook it up
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so that nonlocal and partially redundant loads can use it as well.
The testcase shows examples of craziness this can handle. This triggers
*many* times in 176.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82403 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20 20:09:34 +00:00
Chris Lattner
6af4b7ce4d
change the interface to CoerceAvailableValueToLoadType to be
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more generic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82402 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20 19:31:14 +00:00
Chris Lattner
bb6495cc67
enhance GVN to forward substitute a stored value to a load
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(and load -> load) when the base pointers must alias but when
they are different types. This occurs very very frequently in
176.gcc and other code that uses bitfields a lot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82399 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20 19:03:47 +00:00
Daniel Dunbar
a279bc3da5
Tabs -> spaces, and remove trailing whitespace.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82355 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-20 02:20:51 +00:00
Nick Lewycky
c332fba828
Remove the default value for ConstantStruct::get's isPacked parameter and
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update the code which was broken by this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82327 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-19 20:30:26 +00:00
Victor Hernandez
83d63919bd
Enhance transform passes so that they apply the same tranforms to malloc calls as to MallocInst.
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Reviewed by Dan Gohman.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82300 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-18 22:35:49 +00:00
Victor Hernandez
88d9839d07
Update malloc call creation code (AllocType is now the element type of the malloc, not the resulting type).
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In getMallocArraySize(), fix bug in the case that array size is the product of 2 constants.
Extend isArrayMalloc() and getMallocArraySize() to handle case where malloc is used as char array.
Ensure that ArraySize in LowerAllocations::runOnBasicBlock() is correct type.
Extend Instruction::isSafeToSpeculativelyExecute() to handle malloc calls.
Add verification for malloc calls.
Reviewed by Dan Gohman.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82257 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-18 19:20:02 +00:00
Daniel Dunbar
e443525f35
Update CMake.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82097 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-17 00:06:48 +00:00
Dan Gohman
6f65d79750
Add a new pass for doing late hoisting of floating-point and vector
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constants out of loops. These aren't covered by the regular LICM
pass, because in LLVM IR constants don't require separate
instructions. They're not always covered by the MachineLICM pass
either, because it doesn't know how to unfold folded constant-pool
loads. This is somewhat experimental at this point, and off by
default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82076 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16 20:25:11 +00:00
Dan Gohman
9ad29207db
Change FoldPHIArgBinOpIntoPHI to decline folding if it would introduce two
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phis, similar to the FoldPHIArgGEPIntoPHI change.
Also, delete some comments that don't reflect the code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82053 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16 16:50:24 +00:00
Andreas Neustifter
9233272679
Reapplied r81355 with the problems fixed.
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(See http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090907/086737.html and
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20090907/086746.html )
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82039 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16 11:35:50 +00:00
Andreas Neustifter
ad80981a10
Preserve ProfileInfo during CodeGenPrepare.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82034 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-16 09:26:52 +00:00