ce97d55ad9
The hasMemory argument is irrelevant to how the argument
...
for an "i" constraint should get lowered; PR 6309. While
this argument was passed around a lot, this is the only
place it was used, so it goes away from a lot of other
places.
llvm-svn: 106893
2010-06-25 21:55:36 +00:00
07e9284c75
use ArgOperand API; tighten type of handleFreeWithNonTrivialDependency to be able to use isFreeCall whithout a cast or new overload
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llvm-svn: 106823
2010-06-25 07:40:32 +00:00
963b1c142e
A few minor micro-optimizations.
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llvm-svn: 106764
2010-06-24 16:57:52 +00:00
47ddf76d89
Teach getExactSDiv to evaluate x/1 to x up front, as it's a common
...
enough special case, and it theoretically allows more folding because
it works even when x is unanalyzable.
llvm-svn: 106763
2010-06-24 16:51:25 +00:00
ab5422200b
Fix copy+pasto issues in isMulSExtable.
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llvm-svn: 106759
2010-06-24 16:45:11 +00:00
91f9589057
use ArgOperand API; introduce downcasted pointers into scope to facilitate this
...
llvm-svn: 106734
2010-06-24 12:03:56 +00:00
e2f482ca0b
use ArgOperand API
...
llvm-svn: 106731
2010-06-24 10:42:46 +00:00
2d958d4db5
use ArgOperand API
...
llvm-svn: 106730
2010-06-24 10:17:17 +00:00
5bcaa55761
use callsite to obtain all arguments
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llvm-svn: 106729
2010-06-24 10:04:07 +00:00
0f60709f0e
use getNumArgOperands
...
llvm-svn: 106709
2010-06-24 00:48:48 +00:00
4a39b84a9d
use ArgOperand API
...
llvm-svn: 106707
2010-06-24 00:44:01 +00:00
0dc3c2d37e
Use ValueMap instead of DenseMap.
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The ValueMapper used by various cloning utility maps MDNodes also.
llvm-svn: 106706
2010-06-24 00:33:28 +00:00
1081f1a0f5
Fix OptimizeMax to handle an odd case where one of the max operands
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is another max which folds. This fixes PR7454.
llvm-svn: 106594
2010-06-22 23:07:13 +00:00
d2d1ae105d
Use pre-increment instead of post-increment when the result is not used.
...
llvm-svn: 106542
2010-06-22 15:08:57 +00:00
dd41bba517
Use A.append(...) instead of A.insert(A.end(), ...) when A is a
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SmallVector, and other SmallVector simplifications.
llvm-svn: 106452
2010-06-21 19:47:52 +00:00
32655906e4
Add a TODO comment.
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llvm-svn: 106397
2010-06-19 21:30:18 +00:00
51d00092b6
Include the use kind along with the expression in the key of the
...
use sharing map. The reconcileNewOffset logic already forces a
separate use if the kinds differ, so incorporating the kind in the
key means we can track more sharing opportunities.
More sharing means fewer total uses to track, which means smaller
problem sizes, which means the conservative throttles don't kick
in as often.
llvm-svn: 106396
2010-06-19 21:29:59 +00:00
297fb8b9fc
Don't include things in anonymous namespaces that don't need it.
...
llvm-svn: 106395
2010-06-19 21:21:39 +00:00
f3aea7aecf
Disable indvars on loops when LoopSimplify form is not available.
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This fixes PR7333.
llvm-svn: 106267
2010-06-18 01:35:11 +00:00
a20e2dfe86
Make sure that simplify libcalls does not replace a call with one calling
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convention with a new call with a different calling convention.
llvm-svn: 106134
2010-06-16 19:34:01 +00:00
a13bd20396
simplify-libcalls: fold strncmp(x, y, 1) -> memcmp(x, y, 1)
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The memcmp will be optimized further and even the pathological case
'strstr(x, "x") == x' generates optimal code now.
llvm-svn: 106097
2010-06-16 10:30:29 +00:00
1118860e3a
simplify-libcalls: fold strstr(a, b) == a -> strncmp(a, b, strlen(b)) == 0
...
llvm-svn: 106047
2010-06-15 21:34:25 +00:00
329ea064ed
jump threading can't split a critical edge from an indirectbr. This
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fixes PR7356.
llvm-svn: 105950
2010-06-14 19:45:43 +00:00
b82de426de
SimplifyCFG: don't turn volatile stores to null/undef into unreachable. Fixes PR7369.
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llvm-svn: 105914
2010-06-13 14:35:54 +00:00
9b21208bfb
Pulled CodeMetrics out of InlineCost.h and made it a bit more general, so it can be reused from PartialSpecializationCost
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llvm-svn: 105725
2010-06-09 15:11:37 +00:00
67b4403101
Don't track users of undef values; they aren't interesting for
...
register pressure.
llvm-svn: 105501
2010-06-04 23:16:05 +00:00
826bdf8c10
Move FindAvailableLoadedValue isSafeToLoadUnconditionally out of
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lib/Transforms/Utils and into lib/Analysis so that Analysis passes
can use them.
llvm-svn: 104949
2010-05-28 16:19:17 +00:00
6877119ef3
Kill unneeded SExt.
...
llvm-svn: 104692
2010-05-26 09:45:04 +00:00
9439084cea
Properly promote operands when optimizing a single-character memcmp.
...
llvm-svn: 104648
2010-05-25 22:53:43 +00:00
9b48b856ea
DominatorTree.getNode can return null for unreachable blocks.
...
llvm-svn: 104290
2010-05-20 22:46:54 +00:00
86110fa2bb
Minor code cleanups.
...
llvm-svn: 104287
2010-05-20 22:25:20 +00:00
6295f2ebb8
Make Solve check its own post-condition, to reduce clutter in the
...
top-level LSRInstance logic.
llvm-svn: 104278
2010-05-20 20:59:23 +00:00
a4ca28a3ae
Add comments.
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llvm-svn: 104276
2010-05-20 20:52:00 +00:00
927bcaadda
More code cleanups. Use iterators instead of indices when indices
...
aren't needed.
llvm-svn: 104273
2010-05-20 20:33:18 +00:00
4c4043cf34
Fix OptimizeShadowIV to set Changed. Change OptimizeLoopTermCond to set
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Changed directly instead of using a return value.
Rename FilterOutUndesirableDedicatedRegisters's Changed variable to
distinguish it from LSRInstance's Changed member.
llvm-svn: 104269
2010-05-20 20:05:31 +00:00
8ec018cedf
Add some comments.
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llvm-svn: 104268
2010-05-20 20:00:41 +00:00
8ce95cc3c5
Simplify this code. Don't do a DomTreeNode lookup for each visited block.
...
llvm-svn: 104267
2010-05-20 20:00:25 +00:00
ab5fb7f559
Minor code cleanups.
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llvm-svn: 104263
2010-05-20 19:44:23 +00:00
ee2fea3cd7
When canonicalizing icmp operand order to put the loop invariant
...
operand on the left, the interesting operand is on the right. This
fixes a bug where LSR was failing to recognize ICmpZero uses,
which led it to be unable to reverse the induction variable in the
attached testcase.
Delete test/CodeGen/X86/stack-color-with-reg-2.ll, because its test
is extremely fragile and hard to meaningfully update.
llvm-svn: 104262
2010-05-20 19:26:52 +00:00
fdf9874ba7
Set Changed to true when canonicalizing ICmp operand order; even though
...
it isn't a very interesting change, it's a change nonetheless.
llvm-svn: 104260
2010-05-20 19:16:03 +00:00
981563d0ba
Rename a variable to avoid shadowing.
...
llvm-svn: 104234
2010-05-20 16:41:11 +00:00
6b733fc189
Minor code simplification.
...
llvm-svn: 104232
2010-05-20 16:23:28 +00:00
80a9608442
Move the code for deleting BaseRegs and LSRUses into helper functions,
...
and fix a bug that valgrind noticed where the code would std::swap an
element with itself.
llvm-svn: 104225
2010-05-20 15:17:54 +00:00
20fab456da
Teach LSR how to cope better with unrolled loops on targets where
...
the addressing modes don't make this trivially easy. This allows
it to avoid falling into the less precise heuristics in more
cases.
llvm-svn: 104186
2010-05-19 23:43:12 +00:00
beebef4137
Add a comment.
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llvm-svn: 104089
2010-05-18 23:55:57 +00:00
50f8f2c23d
Fix the predicate which checks for non-sensical formulae which have
...
constants in registers which partially cancel out their immediate fields.
llvm-svn: 104088
2010-05-18 23:48:08 +00:00
4cf99b5303
Factor out the code for recomputing an LSRUse's Regs set after some
...
of its formulae have been removed into a helper function, and also
teach it how to update the RegUseTracker.
llvm-svn: 104087
2010-05-18 23:42:37 +00:00
a4eca05174
Factor out code for estimating search space complexity into a helper
...
function.
llvm-svn: 104082
2010-05-18 22:51:59 +00:00
63e9015248
Add some more debug output.
...
llvm-svn: 104080
2010-05-18 22:41:32 +00:00
f1c7b1b42f
Factor out the code for deleting a formula from an LSRUse into
...
a helper function.
llvm-svn: 104079
2010-05-18 22:39:15 +00:00
Dale Johannesen