Craig Topper [Sun, 12 Aug 2012 05:31:32 +0000 (05:31 +0000)]
Remove call to setOperationAction for SETCC of v4f32. SETCC returns an integer type not an FP type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161738
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Craig Topper [Sun, 12 Aug 2012 05:15:16 +0000 (05:15 +0000)]
Remove unnecessary call to setOperationAction for SETCC of v2i64 under SSE42. It was already called for the same under SSE2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161737
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Arnold Schwaighofer [Sun, 12 Aug 2012 05:11:56 +0000 (05:11 +0000)]
Revert 161581: Patch to implement UMLAL/SMLAL instructions for the ARM
architecture
It broke MultiSource/Applications/JM/ldecod/ldecod on armv7 thumb O0 g and armv7
thumb O3.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161736
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Craig Topper [Sun, 12 Aug 2012 03:16:37 +0000 (03:16 +0000)]
Change addTypeForNeon to use MVT instead of EVT so all the calls to getSimpleVT can be removed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161735
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Craig Topper [Sun, 12 Aug 2012 02:23:29 +0000 (02:23 +0000)]
Make replace many calls to getSizeInBits() with is128BitVector/is256BitVector
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161734
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Craig Topper [Sun, 12 Aug 2012 00:34:56 +0000 (00:34 +0000)]
Use MVT.isXBitVector instead of EVT.isXBitVector when setting up operation actions. Compiles to smaller code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161733
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Michael Liao [Sat, 11 Aug 2012 23:47:06 +0000 (23:47 +0000)]
fix PR13577, an issue introduced by r161687
- FCMOV only supports a subset of X86 conditions. Skip boolean
simplification if X86 condition is not valid for FCMOV.
- add a minimal test case for PR13577.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161732
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Craig Topper [Sat, 11 Aug 2012 23:31:18 +0000 (23:31 +0000)]
Create isXBitVector methods in MVT and call them from EVT. This allows targets to call them with an MVT without needing to convert to EVT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161731
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Craig Topper [Sat, 11 Aug 2012 22:34:26 +0000 (22:34 +0000)]
Move setOperationAction for CONCAT_VECTORS for 256-bit vectors into loop since all 256-bit types are supported.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161730
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Benjamin Kramer [Sat, 11 Aug 2012 20:42:59 +0000 (20:42 +0000)]
MachineCSE: Hoist isConstantPhysReg out of the loop, it checks for overlaps already.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161729
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Benjamin Kramer [Sat, 11 Aug 2012 19:05:13 +0000 (19:05 +0000)]
PR13578: Teach MachineCSE that instructions that use a constant register can be CSE'd safely.
This is common e.g. when doing rip-relative addressing on x86_64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161728
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Craig Topper [Sat, 11 Aug 2012 17:53:00 +0000 (17:53 +0000)]
Tidy up indentation. No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161727
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Craig Topper [Sat, 11 Aug 2012 17:46:16 +0000 (17:46 +0000)]
Fix a cast that was casting away 'const' unnecessarily
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161726
91177308-0d34-0410-b5e6-
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Craig Topper [Sat, 11 Aug 2012 17:44:14 +0000 (17:44 +0000)]
Add a couple default: llvm_unreachable() to some switch statements. Fix a bad message in an existing llvm_unreachable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161725
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Manman Ren [Fri, 10 Aug 2012 23:43:32 +0000 (23:43 +0000)]
X86: when we are auto-detecting the subtarget features, make sure we turn on
FeatureFastUAMem for Nehalem, Westmere and Sandy Bridge.
FeatureFastUAMem is already on if we pass in nehalem or westmere as a command
argument.
rdar:
7252306
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161717
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Jakob Stoklund Olesen [Fri, 10 Aug 2012 22:27:31 +0000 (22:27 +0000)]
Add a proper if-conversion cost model.
Detect when there is not enough available ILP, so if-conversion can't
speculate instructions for free.
Compute the lengthening of the critical path when inserting a select
instruction that depends on the condition as well as both sides of the
if.
Reject conversions that would stretch the critical path by more than
half a mispredict penalty.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161713
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Jakob Stoklund Olesen [Fri, 10 Aug 2012 22:27:29 +0000 (22:27 +0000)]
Give MachineTraceMetrics its own debug tag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161712
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Jakob Stoklund Olesen [Fri, 10 Aug 2012 22:27:27 +0000 (22:27 +0000)]
Add more trace query functions.
Trace::getResourceLength() computes the number of cycles required to
execute the trace when ignoring data dependencies. The number can be
compared to the critical path to estimate the trace ILP.
Trace::getPHIDepth() computes the data dependency depth of a PHI in a
trace successor that isn't necessarily part of the trace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161711
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Eli Friedman [Fri, 10 Aug 2012 20:55:20 +0000 (20:55 +0000)]
The normal edge of an invoke is not allowed to branch to a block with a
landingpad. Enforce it in the verifier, and fix the regression tests to match.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161697
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Manman Ren [Fri, 10 Aug 2012 20:39:38 +0000 (20:39 +0000)]
ARM: enable struct byval for AAPCS.
This change is to be enabled in clang.
rdar://
9877866
PR://13350
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161693
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Jakob Stoklund Olesen [Fri, 10 Aug 2012 20:19:17 +0000 (20:19 +0000)]
Add getTPred() and getFPred() functions.
They identify the PHI predecessors in both diamonds and triangles.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161689
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Jakob Stoklund Olesen [Fri, 10 Aug 2012 20:11:38 +0000 (20:11 +0000)]
Include loop-carried dependencies when computing instr heights.
When a trace ends with a back-edge, include PHIs in the loop header in
the height computations. This makes the critical path through a loop
more accurate by including the latencies of the last instructions in the
loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161688
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Michael Liao [Fri, 10 Aug 2012 19:58:13 +0000 (19:58 +0000)]
add X86-specific DAG optimization to simplify boolean test
- if a boolean test (X86ISD::CMP or X86ISD:SUB) checks a boolean value
generated from X86ISD::SETCC, try to simplify the boolean value
generation and checking by reusing the original EFLAGS with proper
condition code
- add hooks to X86 specific SETCC/BRCOND/CMOV, the major 3 places
consuming EFLAGS
part of patches fixing PR12312
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161687
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Eli Bendersky [Fri, 10 Aug 2012 18:30:44 +0000 (18:30 +0000)]
A couple of addition comment fixes
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161678
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Eli Bendersky [Fri, 10 Aug 2012 18:26:20 +0000 (18:26 +0000)]
Fix a couple of typos in comments
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161677
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Rafael Espindola [Fri, 10 Aug 2012 15:55:25 +0000 (15:55 +0000)]
Constify some basic blocks, no functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161668
91177308-0d34-0410-b5e6-
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Michael Liao [Fri, 10 Aug 2012 14:39:24 +0000 (14:39 +0000)]
remove tailing whitespaces and test commit
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161664
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Rafael Espindola [Fri, 10 Aug 2012 14:05:55 +0000 (14:05 +0000)]
Move BasicBlockEdge to the cpp file. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161663
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Joerg Sonnenberger [Fri, 10 Aug 2012 10:56:09 +0000 (10:56 +0000)]
stdcxx's cstdio doesn't include stdio.h, but the code using PathV2.inc
includes both. Deal with feof and ferror potentially being macros.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161658
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Joerg Sonnenberger [Fri, 10 Aug 2012 10:53:56 +0000 (10:53 +0000)]
Add some missing includes for the build against stdcxx.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161657
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Pete Cooper [Fri, 10 Aug 2012 03:26:36 +0000 (03:26 +0000)]
Fix crash when when do lto on Bullet. Dynamic GEPs in SROA were incorrectly being applied to all accesses to an alloca, not just the ones which read from the GEP. Thanks to Evan for reducing the test. rdar://
11861001
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161654
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Jakob Stoklund Olesen [Fri, 10 Aug 2012 03:23:27 +0000 (03:23 +0000)]
Update edge weights correctly in replaceSuccessor().
When replacing Old with New, it can happen that New is already a
successor. Add the old and new edge weights instead of creating a
duplicate edge.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161653
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Rafael Espindola [Fri, 10 Aug 2012 01:57:52 +0000 (01:57 +0000)]
Remove references to compression in llvm-ar. It has been a long time since we
switched from a bytecode+bzip2 to the current bitcode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161651
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Bob Wilson [Fri, 10 Aug 2012 00:25:30 +0000 (00:25 +0000)]
Use the final .version number for LLVM_MINOR_VERSION in Apple llvmCore builds.
We've switched to a 3-component version numbering scheme for Apple releases,
and with this scheme, the final number is the one most relevant for setting
LLVM_MINOR_VERSION. <rdar://problem/
12071459>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161645
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Jakob Stoklund Olesen [Fri, 10 Aug 2012 00:21:30 +0000 (00:21 +0000)]
Reapply r161633-161634 "Partition use lists so defs always come before uses.""
No changes to these patches, MRI needed to be notified when changing
uses into defs and vice versa.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161644
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Jakob Stoklund Olesen [Fri, 10 Aug 2012 00:21:26 +0000 (00:21 +0000)]
Also update MRI use lists when changing a use to a def and vice versa.
This was the cause of the buildbot failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161643
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Chad Rosier [Fri, 10 Aug 2012 00:00:22 +0000 (00:00 +0000)]
[ms-inline asm] Add a new Inline Asm Non-Standard Dialect attribute.
This new attribute is intended to be used by the backend to determine how
the inline asm string should be parsed/printed. This patch adds the
ia_nsdialect attribute and also adds a test case to ensure the IR is
correctly parsed, but there is no functional change at this time.
The standard dialect is assumed to be AT&T. Therefore, this attribute
should only be added to MS-style inline assembly statements, which use
the Intel dialect. If we ever support more dialects we'll need to
add additional state to the attribute.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161641
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Jakob Stoklund Olesen [Thu, 9 Aug 2012 23:31:36 +0000 (23:31 +0000)]
Revert r161633-161634 "Partition use lists so defs always come before uses."
These commits broke a number of buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161640
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Jakob Stoklund Olesen [Thu, 9 Aug 2012 22:49:46 +0000 (22:49 +0000)]
Partition use lists so defs always come before uses.
This makes it possible to speed up def_iterator by stopping at the first
use. This makes def_empty() and getUniqueVRegDef() much faster when
there are many uses.
In a +Asserts build, LiveVariables is 100x faster in one case because
getVRegDef() has an assertion that would scan to the end of a
def_iterator chain.
Spill weight calculation is significantly faster (300x in one case)
because isTriviallyReMaterializable() calls MRI->isConstantPhysReg(%RIP)
which calls def_empty(%RIP).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161634
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Jakob Stoklund Olesen [Thu, 9 Aug 2012 22:49:42 +0000 (22:49 +0000)]
Don't use pointer-pointers for the register use lists.
Use a more conventional doubly linked list where the Prev pointers form
a cycle. This means it is no longer necessary to adjust the Prev
pointers when reallocating the VRegInfo array.
The test changes are required because the register allocation hint is
using the use-list order to break ties.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161633
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Jakob Stoklund Olesen [Thu, 9 Aug 2012 22:49:37 +0000 (22:49 +0000)]
Move use list management into MachineRegisterInfo.
Register MachineOperands are kept in linked lists accessible via MRI's
reg_iterator interfaces. The linked list management was handled partly
by MachineOperand methods, partly by MRI methods.
Move all of the list management into MRI, delete
MO::AddRegOperandToRegInfo() and MO::RemoveRegOperandFromRegInfo().
Be more explicit about handling the cases where an MRI pointer isn't
available.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161632
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Eric Christopher [Thu, 9 Aug 2012 22:10:21 +0000 (22:10 +0000)]
Remove getARMRegisterNumbering and replace with calls into
the register info for getEncodingValue. This builds on the
small patch of yesterday to set HWEncoding in the register
file.
One (deprecated) use was turned into a hard number to avoid
needing register info in the old JIT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161628
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Jakob Stoklund Olesen [Thu, 9 Aug 2012 22:08:26 +0000 (22:08 +0000)]
Fix a future TwoAddressInstructionPass crash.
No test case, the crash only happens when the default use list order is
changed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161627
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Jakob Stoklund Olesen [Thu, 9 Aug 2012 22:08:24 +0000 (22:08 +0000)]
Don't modify MO while use_iterator is still pointing to it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161626
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Chad Rosier [Thu, 9 Aug 2012 22:04:55 +0000 (22:04 +0000)]
[ms-inline asm] Extend the MC AsmParser API to match MCInsts (but not emit).
This new API will be used by clang to parse ms-style inline asms.
One goal of this project is to use this style of inline asm for targets other
then x86. Therefore, this API needs to be implemented for non-x86 targets at
some point in the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161624
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Chandler Carruth [Thu, 9 Aug 2012 20:26:41 +0000 (20:26 +0000)]
Teach the LLVM test makefile to run the extra Clang tools' test suites
as part of check-all.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161610
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Jack Carter [Thu, 9 Aug 2012 19:43:18 +0000 (19:43 +0000)]
Another 32 to 64 bit sign extension bug.
The fields in the td definition were switched.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161607
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Arnold Schwaighofer [Thu, 9 Aug 2012 15:25:52 +0000 (15:25 +0000)]
Patch to implement UMLAL/SMLAL instructions for the ARM architecture
This patch corrects the definition of umlal/smlal instructions and adds support
for matching them to the ARM dag combiner.
Bug 12213
Patch by Yin Ma!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161581
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Nadav Rotem [Thu, 9 Aug 2012 01:56:44 +0000 (01:56 +0000)]
Fix the legalization of ExtLoad on ARM. ExpandUnalignedLoad did not properly
handle the cases where the memory value type was illegal.
PR 13111.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161565
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Eric Christopher [Thu, 9 Aug 2012 01:39:32 +0000 (01:39 +0000)]
This field isn't used anymore, use it with HWEncoding instead.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161564
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Victor Oliveira [Thu, 9 Aug 2012 01:13:59 +0000 (01:13 +0000)]
Support for experimental targets
Added LLVM_EXPERIMENTAL_TARGETS_TO_BUILD in CMake and --enable-experimental-targets in configure.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161561
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Matt Beaumont-Gay [Thu, 9 Aug 2012 00:30:39 +0000 (00:30 +0000)]
MachineRegisterInfo was already a friend of MachineOperand, and GCC complains
about repeated friending.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161553
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Jim Grosbach [Wed, 8 Aug 2012 23:56:06 +0000 (23:56 +0000)]
Move [SU]LEB128 encoding to a utility header.
These functions are very generic. There's no reason for them to
be tied to MCObjectWriter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161545
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 23:44:07 +0000 (23:44 +0000)]
Move getNextOperandForReg() into MachineRegisterInfo.
MRI provides iterators for traversing the use-def chains. They should
not be accessible from anywhere else.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161543
91177308-0d34-0410-b5e6-
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 23:44:04 +0000 (23:44 +0000)]
Don't use getNextOperandForReg().
This way of using getNextOperandForReg() was unlikely to work as
intended. We don't give any guarantees about the order of operands in
the use-def chains, so looking only at operands following a given
operand in the chain doesn't make sense.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161542
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 23:44:01 +0000 (23:44 +0000)]
Don't use getNextOperandForReg() in RAFast.
That particular optimization was probably premature anyway.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161541
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Owen Anderson [Wed, 8 Aug 2012 23:31:14 +0000 (23:31 +0000)]
Allow legalization of target-specific SDNodes, provided that the target itself provide a legalization hook for them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161536
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 22:12:01 +0000 (22:12 +0000)]
Deal with irreducible control flow when building traces.
We filter out MachineLoop back-edges during the trace-building PO
traversals, but it is possible to have CFG cycles that aren't natural
loops, and MachineLoopInfo doesn't include such cycles.
Use a standard visited set to detect such CFG cycles, and completely
ignore them when picking traces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161532
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Bill Wendling [Wed, 8 Aug 2012 22:03:50 +0000 (22:03 +0000)]
Remove some coding violations. No functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161530
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Bill Wendling [Wed, 8 Aug 2012 22:01:55 +0000 (22:01 +0000)]
Cache a commonly used reference.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161529
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Bob Wilson [Wed, 8 Aug 2012 20:31:37 +0000 (20:31 +0000)]
Add test triples to fix win32 failures. Revert workaround from r161292.
I don't have a win32 system to test, so hopefully I got them all fixed here.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161519
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Bill Wendling [Wed, 8 Aug 2012 18:37:39 +0000 (18:37 +0000)]
Remove OpenBSD defines:
- The defines are in stddint.h, which is #include'd already.
- The block wasn't used anyway, since it was _OpenBSD_, and not __OpenBSD__
Patch by David Hill!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161515
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 18:24:23 +0000 (18:24 +0000)]
Heed -stress-early-ifcvt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161513
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 18:19:58 +0000 (18:19 +0000)]
Get the MispredictPenalty from MCSchedModel.
Thanks, Andy!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161507
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Sebastian Pop [Wed, 8 Aug 2012 18:04:45 +0000 (18:04 +0000)]
revert my previous patch
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161505
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Sebastian Pop [Wed, 8 Aug 2012 17:45:43 +0000 (17:45 +0000)]
enable Hexagon target from cmake
This patch allows us to use cmake to specify a cross compiler for Hexagon.
In particular, the patch adds a missing case for the target Hexagon in
cmake/config-ix.cmake, and it moves LLVM_DEFAULT_TARGET_TRIPLE and TARGET_TRIPLE
variables from cmake/config-ix.cmake to the toplevel CMakeLists.txt to make them
available at configure time. Here is the command line that I have used to test
my patches:
$ cmake -G Ninja -D BUILD_SHARED_LIBS:BOOL=ON -D LLVM_TARGETS_TO_BUILD:STRING=Hexagon -D TARGET_TRIPLE:STRING=hexagon-unknown-linux-gnu -D LLVM_DEFAULT_TARGET_TRIPLE:STRING=hexagon-unknown-linux-gnu -D LLVM_TARGET_ARCH:STRING=hexagon-unknown-linux-gnu -D LLVM_ENABLE_PIC:BOOL=OFF ..
$ ninja check
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161504
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Rafael Espindola [Wed, 8 Aug 2012 14:51:03 +0000 (14:51 +0000)]
Typedefs and indentation fixes from the Andy Zhang/PAX macro argument patch.
Committing it first as it makes the "real" patch a lot easier to read.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161491
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NAKAMURA Takumi [Wed, 8 Aug 2012 13:27:04 +0000 (13:27 +0000)]
llvm/test/MC/COFF/seh.s: Fixup corresponding to r161487.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161489
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Anton Korobeynikov [Wed, 8 Aug 2012 12:46:46 +0000 (12:46 +0000)]
Fix for .pdata and .xdata section attributes on COFF.
Patch by kai@redstar.de !
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161487
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Bill Wendling [Wed, 8 Aug 2012 08:21:24 +0000 (08:21 +0000)]
Sphinxify the CommandLine document.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161479
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Bill Wendling [Wed, 8 Aug 2012 06:42:30 +0000 (06:42 +0000)]
Move header so that it can be picked up by other .rst files.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161478
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Bill Wendling [Wed, 8 Aug 2012 06:30:30 +0000 (06:30 +0000)]
Add `.pushsection', `.popsection', and `.previous' directives to Darwin ASM.
There are situations where inline ASM may want to change the section -- for
instance, to create a variable in the .data section. However, it cannot do this
without (potentially) restoring to the wrong section. E.g.:
asm volatile (".section __DATA, __data\n\t"
".globl _fnord\n\t"
"_fnord: .quad 1f\n\t"
".text\n\t"
"1:" :::);
This may be wrong if this is inlined into a function that has a "section"
attribute. The user should use `.pushsection' and `.popsection' here instead.
The addition of `.previous' is added for completeness.
<rdar://problem/
12048387>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161477
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Andrew Trick [Wed, 8 Aug 2012 02:44:16 +0000 (02:44 +0000)]
Added MispredictPenalty to SchedMachineModel.
This replaces an existing subtarget hook on ARM and allows standard
CodeGen passes to potentially use the property.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161471
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Andrew Trick [Wed, 8 Aug 2012 02:44:11 +0000 (02:44 +0000)]
Minor cleanup of defaultDefLatency API
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161470
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Andrew Trick [Wed, 8 Aug 2012 02:44:08 +0000 (02:44 +0000)]
whitespace
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161469
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Eli Friedman [Wed, 8 Aug 2012 02:17:32 +0000 (02:17 +0000)]
isAllocLikeFn is allowed to return true for functions which read memory; make
sure we account for that correctly in DeadStoreElimination. Fixes a regression
from r158919. PR13547.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161468
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 01:10:31 +0000 (01:10 +0000)]
Revert "Fix a quadratic algorithm in MachineBranchProbabilityInfo."
It caused an assertion failure when compiling consumer-typeset.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161463
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Manman Ren [Wed, 8 Aug 2012 00:51:41 +0000 (00:51 +0000)]
X86: enable CSE between CMP and SUB
We perform the following:
1> Use SUB instead of CMP for i8,i16,i32 and i64 in ISel lowering.
2> Modify MachineCSE to correctly handle implicit defs.
3> Convert SUB back to CMP if possible at peephole.
Removed pattern matching of (a>b) ? (a-b):0 and like, since they are handled
by peephole now.
rdar://
11873276
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161462
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 00:40:47 +0000 (00:40 +0000)]
Don't scan physreg use-def chains looking for a PIC base.
We can't rematerialize a PIC base after register allocation anyway, and
scanning physreg use-def chains is very expensive in a function with
many calls.
<rdar://problem/
12047515>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161461
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Jakob Stoklund Olesen [Wed, 8 Aug 2012 00:20:37 +0000 (00:20 +0000)]
Fix a quadratic algorithm in MachineBranchProbabilityInfo.
The getSumForBlock function was quadratic in the number of successors
because getSuccWeight would perform a linear search for an already known
iterator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161460
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Dan Gohman [Wed, 8 Aug 2012 00:00:26 +0000 (00:00 +0000)]
Avoid recomputing the unique exit blocks and their insert points when doing
multiple scalar promotions on a single loop. This also has the effect of
preserving the order of stores sunk out of loops, which is aesthetically
pleasing, and it happens to fix the testcase in PR13542, though it doesn't
fix the underlying problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161459
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Jakob Stoklund Olesen [Tue, 7 Aug 2012 22:47:06 +0000 (22:47 +0000)]
Skip tied operand pairs that already have the same register.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161454
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Jakob Stoklund Olesen [Tue, 7 Aug 2012 22:37:05 +0000 (22:37 +0000)]
Add SelectionDAG::getTargetIndex.
This adds support for TargetIndex operands during isel. The meaning of
these (index, offset, flags) operands is entirely defined by the target.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161453
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Bob Wilson [Tue, 7 Aug 2012 22:35:16 +0000 (22:35 +0000)]
Fix a serious typo in InstCombine's optimization of comparisons.
An unsigned value converted to floating-point will always be greater than
a negative constant. Unfortunately InstCombine reversed the check so that
unsigned values were being optimized to always be greater than all positive
floating-point constants. <rdar://problem/
12029145>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161452
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Evan Cheng [Tue, 7 Aug 2012 22:21:00 +0000 (22:21 +0000)]
X86 cmp lowering is looking past truncate on the condition node. It should only
do so when the high bits are known zero. This caused a subtle miscompilation.
rdar://
12027825
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161451
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Bill Wendling [Tue, 7 Aug 2012 20:59:05 +0000 (20:59 +0000)]
For non-Darwin platforms, we want to generate stack protectors only for
character arrays. This is in line with what GCC does.
<rdar://problem/
10529227>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161446
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Jakob Stoklund Olesen [Tue, 7 Aug 2012 18:56:39 +0000 (18:56 +0000)]
Add a new kind of MachineOperand: MO_TargetIndex.
A target index operand looks a lot like a constant pool reference, but
it is completely target-defined. It contains the 8-bit TargetFlags, a
32-bit index, and a 64-bit offset. It is preserved by all code generator
passes.
TargetIndex operands can be used to carry target-specific information in
cases where immediate operands won't suffice.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161441
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Andrew Kaylor [Tue, 7 Aug 2012 18:33:00 +0000 (18:33 +0000)]
Enable lazy compilation in MCJIT
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161438
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Jakob Stoklund Olesen [Tue, 7 Aug 2012 18:32:57 +0000 (18:32 +0000)]
Fix a couple of typos.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161437
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Eli Friedman [Tue, 7 Aug 2012 18:06:01 +0000 (18:06 +0000)]
Remove empty directory.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161434
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Jakob Stoklund Olesen [Tue, 7 Aug 2012 18:02:19 +0000 (18:02 +0000)]
Add trace accessor methods, implement primitive if-conversion heuristic.
Compare the critical paths of the two traces through an if-conversion
candidate. If the difference is larger than the branch brediction
penalty, reject the if-conversion. If would never pay.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161433
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Jim Grosbach [Tue, 7 Aug 2012 17:53:14 +0000 (17:53 +0000)]
Tidy up a bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161430
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Rafael Espindola [Tue, 7 Aug 2012 17:30:46 +0000 (17:30 +0000)]
The dominance computation already has logic for computing if an edge dominates
a use or a BB, but it is inline in the handling of the invoke instruction.
This patch refactors it so that it can be used in other cases. For example, in
define i32 @f(i32 %x) {
bb0:
%cmp = icmp eq i32 %x, 0
br i1 %cmp, label %bb2, label %bb1
bb1:
br label %bb2
bb2:
%cond = phi i32 [ %x, %bb0 ], [ 0, %bb1 ]
%foo = add i32 %cond, %x
ret i32 %foo
}
GVN should be able to replace %x with 0 in any use that is dominated by the
true edge out of bb0. In the above example the only such use is the one in
the phi.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161429
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Hal Finkel [Tue, 7 Aug 2012 17:04:20 +0000 (17:04 +0000)]
Add a comment about mftb vs. mfspr on PPC.
Thanks to Alex Rosenberg for the suggestion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161428
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Alexey Samsonov [Tue, 7 Aug 2012 11:46:57 +0000 (11:46 +0000)]
Fix the representation of debug line table in DebugInfo LLVM library,
and "instruction address -> file/line" lookup.
Instead of plain collection of rows, debug line table for compilation unit is now
treated as the number of row ranges, describing sequences (series of contiguous machine
instructions). The sequences are not always listed in the order of increasing
address, so previously used std::lower_bound() sometimes produced wrong results.
Now the instruction address lookup consists of two stages: finding the correct
sequence, and searching for address in range of rows for this sequence.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161414
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Benjamin Kramer [Tue, 7 Aug 2012 11:13:19 +0000 (11:13 +0000)]
PR13095: Give an inline cost bonus to functions using byval arguments.
We give a bonus for every argument because the argument setup is not needed
anymore when the function is inlined. With this patch we interpret byval
arguments as a compact representation of many arguments. The byval argument
setup is implemented in the backend as an inline memcpy, so to model the
cost as accurately as possible we take the number of pointer-sized elements
in the byval argument and give a bonus of 2 instructions for every one of
those. The bonus is capped at 8 elements, which is the number of stores
at which the x86 backend switches from an expanded inline memcpy to a real
memcpy. It would be better to use the real memcpy threshold from the backend,
but it's not available via TargetData.
This change brings the performance of c-ray in line with gcc 4.7. The included
test case tries to reproduce the c-ray problem to catch regressions for this
benchmark early, its performance is dominated by the inline decision of a
specific call.
This only has a small impact on most code, more on x86 and arm than on x86_64
due to the way the ABI works. When building LLVM for x86 it gives a small
inline cost boost to virtually any function using StringRef or STL allocators,
but only a 0.01% increase in overall binary size. The size of gcc compiled by
clang actually shrunk by a couple bytes with this patch applied, but not
significantly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161413
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Chandler Carruth [Tue, 7 Aug 2012 10:59:59 +0000 (10:59 +0000)]
Fix PR13412, a nasty miscompile due to the interleaved
instsimplify+inline strategy.
The crux of the problem is that instsimplify was reasonably relying on
an invariant that is true within any single function, but is no longer
true mid-inline the way we use it. This invariant is that an argument
pointer != a local (alloca) pointer.
The fix is really light weight though, and allows instsimplify to be
resiliant to these situations: when checking the relation ships to
function arguments, ensure that the argumets come from the same
function. If they come from different functions, then none of these
assumptions hold. All credit to Benjamin Kramer for coming up with this
clever solution to the problem.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161410
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Chandler Carruth [Tue, 7 Aug 2012 09:45:24 +0000 (09:45 +0000)]
Add a much more conservative strategy for aligning branch targets.
Previously, MBP essentially aligned every branch target it could. This
bloats code quite a bit, especially non-looping code which has no real
reason to prefer aligned branch targets so heavily.
As Andy said in review, it's still a bit odd to do this without a real
cost model, but this at least has much more plausible heuristics.
Fixes PR13265.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161409
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Manman Ren [Tue, 7 Aug 2012 06:16:46 +0000 (06:16 +0000)]
MachineCSE: Update the heuristics for isProfitableToCSE.
If the result of a common subexpression is used at all uses of the candidate
expression, CSE should not increase the live range of the common subexpression.
rdar://
11393714 and rdar://
11819721
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161396
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Bill Wendling [Tue, 7 Aug 2012 05:51:59 +0000 (05:51 +0000)]
Revert r161371. Removing the 'const' before Type is a "good thing".
--- Reverse-merging r161371 into '.':
U include/llvm/Target/TargetData.h
U lib/Target/TargetData.cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161394
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