Dan Gohman [Fri, 13 Nov 2009 18:49:38 +0000 (18:49 +0000)]
Don't let a noalias difference disrupt the tailcall optimization.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88672
91177308-0d34-0410-b5e6-
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David Greene [Fri, 13 Nov 2009 14:42:06 +0000 (14:42 +0000)]
Remove duplicate APIs and state WRT spill objects.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87106
91177308-0d34-0410-b5e6-
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Rafael Espindola [Fri, 13 Nov 2009 04:55:09 +0000 (04:55 +0000)]
Distinguish "a," from "a". The first one splits into "a" + "" and the second one into
"a" + 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87084
91177308-0d34-0410-b5e6-
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Devang Patel [Fri, 13 Nov 2009 02:27:33 +0000 (02:27 +0000)]
Revert r87059 for now. It is failing clang tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87070
91177308-0d34-0410-b5e6-
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Devang Patel [Fri, 13 Nov 2009 02:25:26 +0000 (02:25 +0000)]
Ignore nameless variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87069
91177308-0d34-0410-b5e6-
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Rafael Espindola [Fri, 13 Nov 2009 02:18:25 +0000 (02:18 +0000)]
Switch to smallvector. Also fix issue with using unsigend for MaxSplit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87068
91177308-0d34-0410-b5e6-
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Dale Johannesen [Fri, 13 Nov 2009 01:45:18 +0000 (01:45 +0000)]
Adjust isConstantSplat to allow for big-endian targets.
PPC is such a target; make it work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87060
91177308-0d34-0410-b5e6-
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Victor Hernandez [Fri, 13 Nov 2009 01:44:55 +0000 (01:44 +0000)]
Remove unnecessary llvm.dbg.declare bitcast
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87059
91177308-0d34-0410-b5e6-
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Rafael Espindola [Fri, 13 Nov 2009 01:24:40 +0000 (01:24 +0000)]
Add a new split method to StringRef that puts the substrings in a vector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87058
91177308-0d34-0410-b5e6-
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Jim Grosbach [Fri, 13 Nov 2009 01:19:24 +0000 (01:19 +0000)]
Block renumbering
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87056
91177308-0d34-0410-b5e6-
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Jim Grosbach [Fri, 13 Nov 2009 01:17:22 +0000 (01:17 +0000)]
use lower case for readability
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87054
91177308-0d34-0410-b5e6-
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Daniel Dunbar [Fri, 13 Nov 2009 01:01:58 +0000 (01:01 +0000)]
Update test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87049
91177308-0d34-0410-b5e6-
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David Greene [Fri, 13 Nov 2009 00:29:53 +0000 (00:29 +0000)]
Fix a bootstrap failure.
Provide special isLoadFromStackSlotPostFE and isStoreToStackSlotPostFE
interfaces to explicitly request checking for post-frame ptr elimination
operands. This uses a heuristic so it isn't reliable for correctness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87047
91177308-0d34-0410-b5e6-
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Owen Anderson [Thu, 12 Nov 2009 23:22:41 +0000 (23:22 +0000)]
Re-enable this code, since redundant PHIs are now being better nuked.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87042
91177308-0d34-0410-b5e6-
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Bill Wendling [Thu, 12 Nov 2009 23:13:08 +0000 (23:13 +0000)]
Simplify code a bit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87040
91177308-0d34-0410-b5e6-
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Bill Wendling [Thu, 12 Nov 2009 21:59:20 +0000 (21:59 +0000)]
Refactor code that checks if it's a call to a "nounwind" function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87036
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 21:58:18 +0000 (21:58 +0000)]
use isInstructionTriviallyDead, as pointed out by Duncan
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87035
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 21:49:55 +0000 (21:49 +0000)]
Do some cleanups suggested by Chris.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87034
91177308-0d34-0410-b5e6-
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Daniel Dunbar [Thu, 12 Nov 2009 21:26:11 +0000 (21:26 +0000)]
StringRef(const char*) should not be used to turn null pointers into empty
strings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87031
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 21:07:54 +0000 (21:07 +0000)]
Set the ReloadReuse AsmPrinter flag where appropriate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87030
91177308-0d34-0410-b5e6-
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Daniel Dunbar [Thu, 12 Nov 2009 21:07:02 +0000 (21:07 +0000)]
Remove my Value.h build fix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87029
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 21:04:19 +0000 (21:04 +0000)]
Fix a build error by providing a missing enum value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87028
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 21:00:03 +0000 (21:00 +0000)]
Make the MachineFunction argument of getFrameRegister const.
This also fixes a build error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87027
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 20:55:29 +0000 (20:55 +0000)]
Add hasLoadFromStackSlot and hasStoreToStackSlot to return whether a
machine instruction loads or stores from/to a stack slot. Unlike
isLoadFromStackSlot and isStoreFromStackSlot, the instruction may be
something other than a pure load/store (e.g. it may be an arithmetic
operation with a memory operand). This helps AsmPrinter determine when
to print a spill/reload comment.
This is only a hint since we may not be able to figure this out in all
cases. As such, it should not be relied upon for correctness.
Implement for X86. Return false by default for other architectures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87026
91177308-0d34-0410-b5e6-
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Daniel Dunbar [Thu, 12 Nov 2009 20:53:56 +0000 (20:53 +0000)]
Attempt to unbreak LLVM build, David G. please check.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87025
91177308-0d34-0410-b5e6-
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Daniel Dunbar [Thu, 12 Nov 2009 20:53:43 +0000 (20:53 +0000)]
Fix -Asserts warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87024
91177308-0d34-0410-b5e6-
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Bill Wendling [Thu, 12 Nov 2009 20:51:53 +0000 (20:51 +0000)]
If there's more than one function operand to a call instruction, be conservative
and don't assume that the call doesn't throw. It would be nice if there were a
way to determine which is the callee and which is a parameter. In practice, the
architecture we care about normally only have one operand for a call instruction
(x86 and arm).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87023
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 20:49:22 +0000 (20:49 +0000)]
Add a bool flag to StackObjects telling whether they reference spill
slots. The AsmPrinter will use this information to determine whether to
print a spill/reload comment.
Remove default argument values. It's too easy to pass a wrong argument
value when multiple arguments have default values. Make everything
explicit to trap bugs early.
Update all targets to adhere to the new interfaces..
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87022
91177308-0d34-0410-b5e6-
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Benjamin Kramer [Thu, 12 Nov 2009 20:36:59 +0000 (20:36 +0000)]
Add compare_lower and equals_lower methods to StringRef. Switch all users of
StringsEqualNoCase (from StringExtras.h) to it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87020
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 20:25:07 +0000 (20:25 +0000)]
Make FixedStackPseudoSourceValue a first-class PseudoSourceValue by
making it visible to clients and adding LLVM-style cast capability.
This will be used by AsmPrinter to determine when to emit spill comments
for an instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87019
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 20:21:09 +0000 (20:21 +0000)]
Add AsmPrinter comment flags to machine instructions so that AsmPrinter
can emit extra information in comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87018
91177308-0d34-0410-b5e6-
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David Greene [Thu, 12 Nov 2009 20:13:34 +0000 (20:13 +0000)]
Add comment flags so AsmPrinter can output additional information when
emitting comments. These flags carry semantic information not otherwise
easily derivable from the IR text.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87016
91177308-0d34-0410-b5e6-
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David Goodwin [Thu, 12 Nov 2009 19:08:21 +0000 (19:08 +0000)]
Rename registers to break output dependencies in addition to anti-dependencies.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87015
91177308-0d34-0410-b5e6-
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Devang Patel [Thu, 12 Nov 2009 19:02:56 +0000 (19:02 +0000)]
"Attach debug info with llvm instructions" mode was enabled a month ago. Now make it permanent and remove old way of inserting intrinsics to encode debug info for line number and scopes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87014
91177308-0d34-0410-b5e6-
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Dan Gohman [Thu, 12 Nov 2009 18:36:19 +0000 (18:36 +0000)]
Mark DBG_LABEL, EH_LABEL, and GC_LABEL as not-duplicable, since
they really are not duplicable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87009
91177308-0d34-0410-b5e6-
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Benjamin Kramer [Thu, 12 Nov 2009 17:59:45 +0000 (17:59 +0000)]
Silence a warning on targets with unsigned chars.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@87002
91177308-0d34-0410-b5e6-
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Jim Grosbach [Thu, 12 Nov 2009 17:25:07 +0000 (17:25 +0000)]
Update TB[BH] layout optimization. Add support for moving the target block
to directly follow the jump table. Move the layout changes to prior to any
constant island handling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86999
91177308-0d34-0410-b5e6-
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Jim Grosbach [Thu, 12 Nov 2009 17:19:09 +0000 (17:19 +0000)]
Clean up testcase a bit. Simplify case blocks and adjust switch instruction to not take an undefined value as input.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86997
91177308-0d34-0410-b5e6-
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Nuno Lopes [Thu, 12 Nov 2009 15:10:33 +0000 (15:10 +0000)]
fix crash in my previous patch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86987
91177308-0d34-0410-b5e6-
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Nuno Lopes [Thu, 12 Nov 2009 14:53:53 +0000 (14:53 +0000)]
implement shl, ashr, and lshr methods. shl is not fully implemented as it is quite tricky.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86986
91177308-0d34-0410-b5e6-
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Benjamin Kramer [Thu, 12 Nov 2009 12:35:27 +0000 (12:35 +0000)]
Fix typo in run line.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86984
91177308-0d34-0410-b5e6-
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Gabor Greif [Thu, 12 Nov 2009 09:44:17 +0000 (09:44 +0000)]
typo
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86980
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 07:56:08 +0000 (07:56 +0000)]
implement a nice little efficiency hack in the inliner. Since we're now
running IPSCCP early, and we run functionattrs interlaced with the inliner,
we often (particularly for small or noop functions) completely propagate
all of the information about a call to its call site in IPSSCP (making a call
dead) and functionattrs is smart enough to realize that the function is
readonly (because it is interlaced with inliner).
To improve compile time and make the inliner threshold more accurate, realize
that we don't have to inline dead readonly function calls. Instead, just
delete the call. This happens all the time for C++ codes, here are some
counters from opt/llvm-ld counting the number of times calls were deleted vs
inlined on various apps:
Tramp3d opt:
5033 inline - Number of call sites deleted, not inlined
24596 inline - Number of functions inlined
llvm-ld:
667 inline - Number of functions deleted because all callers found
699 inline - Number of functions inlined
483.xalancbmk opt:
8096 inline - Number of call sites deleted, not inlined
62528 inline - Number of functions inlined
llvm-ld:
217 inline - Number of allocas merged together
2158 inline - Number of functions inlined
471.omnetpp:
331 inline - Number of call sites deleted, not inlined
8981 inline - Number of functions inlined
llvm-ld:
171 inline - Number of functions deleted because all callers found
629 inline - Number of functions inlined
Deleting a call is much faster than inlining it, and is insensitive to the
size of the callee. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86975
91177308-0d34-0410-b5e6-
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Evan Cheng [Thu, 12 Nov 2009 07:49:10 +0000 (07:49 +0000)]
RegScavenger::enterBasicBlock should always reset register state.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86972
91177308-0d34-0410-b5e6-
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Evan Cheng [Thu, 12 Nov 2009 07:35:05 +0000 (07:35 +0000)]
- Teach LSR to avoid changing cmp iv stride if it will create an immediate that
cannot be folded into target cmp instruction.
- Avoid a phase ordering issue where early cmp optimization would prevent the
later count-to-zero optimization.
- Add missing checks which could cause LSR to reuse stride that does not have
users.
- Fix a bug in count-to-zero optimization code which failed to find the pre-inc
iv's phi node.
- Remove, tighten, loosen some incorrect checks disable valid transformations.
- Quite a bit of code clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86969
91177308-0d34-0410-b5e6-
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Evan Cheng [Thu, 12 Nov 2009 07:16:34 +0000 (07:16 +0000)]
Use table to separate opcode from operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86965
91177308-0d34-0410-b5e6-
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Evan Cheng [Thu, 12 Nov 2009 07:13:11 +0000 (07:13 +0000)]
isLegalICmpImmediate should take a signed integer; code clean up.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86964
91177308-0d34-0410-b5e6-
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Oscar Fuentes [Thu, 12 Nov 2009 06:48:09 +0000 (06:48 +0000)]
CMake: Hopefully unbreak the build by mimicking the changes on the
other build system about the new C_INCLUDE_DIRS configure option.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86960
91177308-0d34-0410-b5e6-
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Rafael Espindola [Thu, 12 Nov 2009 05:46:09 +0000 (05:46 +0000)]
Add the --with-c-include-dirs to llvm's configure.
The clang patch is next.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86955
91177308-0d34-0410-b5e6-
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Oscar Fuentes [Thu, 12 Nov 2009 05:36:09 +0000 (05:36 +0000)]
CMake: Pass -lm to check_symbol_exists for detecting several math
functions like floorf, ceilf, ... Add test for detecting nearbyintf.
This change was prompted by test/Transforms/SimplifyLibCalls/floor.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86954
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 05:24:05 +0000 (05:24 +0000)]
use getPredicateOnEdge to fold comparisons through PHI nodes,
which implements GCC PR18046. This also gets us 360 more
jump threads on 176.gcc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86953
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 04:57:13 +0000 (04:57 +0000)]
various fixes to the lattice transfer functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86952
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 04:37:50 +0000 (04:37 +0000)]
switch jump threading to use getPredicateOnEdge in one place
making the new LVI stuff smart enough to subsume some special
cases in the old code. Disable them when LVI is around, the
testcase still passes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86951
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 04:36:58 +0000 (04:36 +0000)]
Add a new getPredicateOnEdge method which returns more rich information for
constant constraints. Improve the LVI lattice to include inequality
constraints.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86950
91177308-0d34-0410-b5e6-
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Jim Grosbach [Thu, 12 Nov 2009 03:55:33 +0000 (03:55 +0000)]
Move the utility function UpdateTerminator() from CodePlacementOpt() into
MachineBasicBlock so other passes can utilize it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86947
91177308-0d34-0410-b5e6-
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Jim Grosbach [Thu, 12 Nov 2009 03:28:35 +0000 (03:28 +0000)]
Revert 86857. It's causing consumer-typeset to fail, and there's a better way to do it forthcoming anyway.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86945
91177308-0d34-0410-b5e6-
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Eric Christopher [Thu, 12 Nov 2009 03:12:18 +0000 (03:12 +0000)]
Use stubs when we have them, otherwise use code we already have,
otherwise create a stub.
Add a test to make sure we don't create extraneous stubs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86941
91177308-0d34-0410-b5e6-
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Daniel Dunbar [Thu, 12 Nov 2009 02:52:56 +0000 (02:52 +0000)]
Add the braces gcc suggested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86933
91177308-0d34-0410-b5e6-
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Nick Lewycky [Thu, 12 Nov 2009 02:08:11 +0000 (02:08 +0000)]
Add CreateNUWAdd and CreateNUWSub to complement the existing CreateNSWAdd and
CreateNSWSub functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86930
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 02:04:17 +0000 (02:04 +0000)]
should not commit when distracted.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86929
91177308-0d34-0410-b5e6-
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Dan Gohman [Thu, 12 Nov 2009 01:59:26 +0000 (01:59 +0000)]
Make the BranchFolderPass class local to BranchFolding.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86928
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 01:55:20 +0000 (01:55 +0000)]
We now thread some impossible condition information with LVI.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86927
91177308-0d34-0410-b5e6-
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Dan Gohman [Thu, 12 Nov 2009 01:51:28 +0000 (01:51 +0000)]
Minor code cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86926
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 01:41:34 +0000 (01:41 +0000)]
with the new code we can thread non-instruction values. This
allows us to handle the test10 testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86924
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 01:37:43 +0000 (01:37 +0000)]
this argument can be an arbitrary value, it doesn't need to be an instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86923
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 01:29:10 +0000 (01:29 +0000)]
expose edge information and switch j-t to use it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86920
91177308-0d34-0410-b5e6-
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Lang Hames [Thu, 12 Nov 2009 01:24:08 +0000 (01:24 +0000)]
Fixed an iteration condition in PreAllocSplitting. This should fix some miscompilations casued by PreAllocSplitting.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86919
91177308-0d34-0410-b5e6-
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Chris Lattner [Thu, 12 Nov 2009 01:22:16 +0000 (01:22 +0000)]
move some stuff into DEBUG's and turn on lazy-value-info for
the basic.ll testcase.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86918
91177308-0d34-0410-b5e6-
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Eric Christopher [Thu, 12 Nov 2009 01:06:08 +0000 (01:06 +0000)]
Fix typo, cleanup whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86917
91177308-0d34-0410-b5e6-
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Devang Patel [Thu, 12 Nov 2009 00:50:58 +0000 (00:50 +0000)]
Do not use StringRef in DebugInfo interface.
This allows StringRef to skip controversial if(str) check in constructor.
Buildbots, wait for corresponding clang and llvm-gcc FE check-ins!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86914
91177308-0d34-0410-b5e6-
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Dan Gohman [Thu, 12 Nov 2009 00:39:10 +0000 (00:39 +0000)]
Tail merge at any size when there are two potentials blocks and one
can be made to fall through into the other.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86909
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Bill Wendling [Wed, 11 Nov 2009 23:17:02 +0000 (23:17 +0000)]
Don't mark a call as potentially throwing if the function it's calling has the
"nounwind" attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86897
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Bruno Cardoso Lopes [Wed, 11 Nov 2009 23:09:33 +0000 (23:09 +0000)]
A real solution for the first part of PR5445
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86895
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Chris Lattner [Wed, 11 Nov 2009 22:48:44 +0000 (22:48 +0000)]
make LazyValueInfo actually to some stuff. This isn't very tested but improves
strswitch.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86889
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Chris Lattner [Wed, 11 Nov 2009 22:31:38 +0000 (22:31 +0000)]
pass TD into a SimplifyCmpInst call. Add another case that
uses LVI info when -enable-jump-threading-lvi is passed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86886
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Dan Gohman [Wed, 11 Nov 2009 21:57:02 +0000 (21:57 +0000)]
Promote MergePotentialsElt and SameTailElt to be regular classes
instead of typedefs for std::pair. This simplifies the type of
SameTails, which previously was std::vector<std::pair<std::vector<std::pair<unsigned, MachineBasicBlock *> >::iterator, MachineBasicBlock::iterator>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86885
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Kenneth Uildriks [Wed, 11 Nov 2009 19:59:24 +0000 (19:59 +0000)]
x86 users can now return arbitrary sized structs. Structs too large to fit in return registers will be returned through a hidden sret parameter introduced during SelectionDAG construction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86876
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Dan Gohman [Wed, 11 Nov 2009 19:56:05 +0000 (19:56 +0000)]
Revert this line of 86871.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86875
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Devang Patel [Wed, 11 Nov 2009 19:55:08 +0000 (19:55 +0000)]
If doesSupportDebugInformation() is false then do not try to emit dwarf debug info.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86874
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Dan Gohman [Wed, 11 Nov 2009 19:49:34 +0000 (19:49 +0000)]
Check in the changes to this file too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86873
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Dan Gohman [Wed, 11 Nov 2009 19:48:59 +0000 (19:48 +0000)]
Add support for tail duplication to BranchFolding, and extend
tail merging support to handle more cases.
- Recognize several cases where tail merging is beneficial even when
the tail size is smaller than the generic threshold.
- Make use of MachineInstrDesc::isBarrier to help detect
non-fallthrough blocks.
- Check for and avoid disrupting fall-through edges in more cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86871
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Jakob Stoklund Olesen [Wed, 11 Nov 2009 19:31:31 +0000 (19:31 +0000)]
Fix liveness calculation when splitting critical edges during PHI elimination.
- Edges are split before any phis are eliminated, so the code is SSA.
- Create a proper IR BasicBlock for the split edges.
- LiveVariables::addNewBlock now has same syntax as
MachineDominatorTree::addNewBlock. Algorithm calculates predecessor live-out
set rather than successor live-in set.
This feature still causes some miscompilations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86867
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Devang Patel [Wed, 11 Nov 2009 19:08:42 +0000 (19:08 +0000)]
Reenable StackTracke.cpp test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86861
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Devang Patel [Wed, 11 Nov 2009 19:06:06 +0000 (19:06 +0000)]
Add SetDebugLocation() variant to
add debug info location to an instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86859
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Evan Cheng [Wed, 11 Nov 2009 19:05:52 +0000 (19:05 +0000)]
Add TargetLowering::isLegalICmpImmediate. It tells LSR what immediate can be folded into target icmp instructions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86858
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Jim Grosbach [Wed, 11 Nov 2009 19:04:24 +0000 (19:04 +0000)]
Do jump table adjustment before constant island allocation
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86857
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Dan Gohman [Wed, 11 Nov 2009 18:42:28 +0000 (18:42 +0000)]
Fix indentation level.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86856
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Dan Gohman [Wed, 11 Nov 2009 18:38:14 +0000 (18:38 +0000)]
Whitespace cleanups.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86855
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Dan Gohman [Wed, 11 Nov 2009 18:23:17 +0000 (18:23 +0000)]
Prefix MBB numbers with "BB#" in debug output to make it clear what
the numbers mean.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86854
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Dan Gohman [Wed, 11 Nov 2009 18:18:34 +0000 (18:18 +0000)]
Minor code simplification.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86853
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Dan Gohman [Wed, 11 Nov 2009 18:14:02 +0000 (18:14 +0000)]
Fix a copy+pasto in a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86852
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Dan Gohman [Wed, 11 Nov 2009 18:11:07 +0000 (18:11 +0000)]
Set isBarrier = 1 on return instructions, as they are control barriers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86851
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Dan Gohman [Wed, 11 Nov 2009 18:07:16 +0000 (18:07 +0000)]
Use a tab in INT3's asm string, for consistency.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86850
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Chris Lattner [Wed, 11 Nov 2009 17:54:02 +0000 (17:54 +0000)]
another const prop failure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86848
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Chris Lattner [Wed, 11 Nov 2009 17:51:27 +0000 (17:51 +0000)]
add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86847
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Chris Lattner [Wed, 11 Nov 2009 17:37:02 +0000 (17:37 +0000)]
Reject duplicate case values in a switch, PR5450.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86846
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Duncan Sands [Wed, 11 Nov 2009 15:34:13 +0000 (15:34 +0000)]
Don't trivially delete unused calls to llvm.invariant.start. This allows
llvm.invariant.start to be used without necessarily being paired with a call
to llvm.invariant.end. If you run the entire optimization pipeline then such
calls are in fact deleted (adce does it), but that's actually a good thing since
we probably do want them to be zapped late in the game. There should really be
an integration test that checks that the llvm.invariant.start call lasts long
enough that all passes that do interesting things with it get to do their stuff
before it is deleted. But since no passes do anything interesting with it yet
this will have to wait for later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86840
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Evan Cheng [Wed, 11 Nov 2009 07:11:02 +0000 (07:11 +0000)]
Add nounwind.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86814
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Chris Lattner [Wed, 11 Nov 2009 05:56:35 +0000 (05:56 +0000)]
remove the now dead condprop pass, PR3906.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86810
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Jeffrey Yasskin [Wed, 11 Nov 2009 05:30:02 +0000 (05:30 +0000)]
Fix JITTest.ModuleDeletion in -Asserts mode (which turns off JITEmitDebugInfo
by default).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@86807
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