oota-llvm.git
12 years agoSplit out the PPC instruction class IntSimple from IntGeneral.
Hal Finkel [Tue, 12 Jun 2012 19:01:24 +0000 (19:01 +0000)]
Split out the PPC instruction class IntSimple from IntGeneral.

On the POWER7, adds and logical operations can also be handled
in the load/store pipelines. We'll call these IntSimple.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158366 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRemove use of GNU extension to resolve Clang warning.
David Blaikie [Tue, 12 Jun 2012 17:06:32 +0000 (17:06 +0000)]
Remove use of GNU extension to resolve Clang warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158364 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFixes for PPC host detection and features.
Hal Finkel [Tue, 12 Jun 2012 16:39:23 +0000 (16:39 +0000)]
Fixes for PPC host detection and features.

POWER4 is a 64-bit CPU (better matched to the 970).
The g3 is really the 750 (no altivec), the g4+ is the 74xx (not the 750).

Patch by Andreas Tobler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158363 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoUse correct syntax highliter in code blocks. Noticed by Sean Silva.
Dmitri Gribenko [Tue, 12 Jun 2012 15:45:07 +0000 (15:45 +0000)]
Use correct syntax highliter in code blocks.  Noticed by Sean Silva.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158359 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoNow that Reassociate's LinearizeExprTree can look through arbitrary expression
Duncan Sands [Tue, 12 Jun 2012 14:33:56 +0000 (14:33 +0000)]
Now that Reassociate's LinearizeExprTree can look through arbitrary expression
topologies, it is quite possible for a leaf node to have huge multiplicity, for
example: x0 = x*x, x1 = x0*x0, x2 = x1*x1, ... rapidly gives a value which is x
raised to a vast power (the multiplicity, or weight, of x).  This patch fixes
the computation of weights by correctly computing them no matter how big they
are, rather than just overflowing and getting a wrong value.  It turns out that
the weight for a value never needs more bits to represent than the value itself,
so it is enough to represent weights as APInts of the same bitwidth and do the
right overflow-avoiding dance steps when computing weights.  As a side-effect it
reduces the number of multiplies needed in some cases of large powers.  While
there, in view of external uses (eg by the vectorizer) I made LinearizeExprTree
static, pushing the rank computation out into users.  This is progress towards
fixing PR13021.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158358 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd two newlines in ParseSubtargetFeatures's debug output after the CPU is printed.
Hal Finkel [Tue, 12 Jun 2012 04:21:36 +0000 (04:21 +0000)]
Add two newlines in ParseSubtargetFeatures's debug output after the CPU is printed.

There is otherwise not a newline between the CPU name and the start of the next
pass's output which makes both difficult to read.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158350 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoReapply r158337, this time properly protect Darwin/PPC host CPU use with __ppc__.
Hal Finkel [Tue, 12 Jun 2012 03:03:13 +0000 (03:03 +0000)]
Reapply r158337, this time properly protect Darwin/PPC host CPU use with __ppc__.

Original commit message:
Move PPC host-CPU detection logic from PPCSubtarget into sys::getHostCPUName().

Both the new Linux functionality and the old Darwin functions have been moved.
This change also allows this information to be queried directly by clang and
other frontends (clang, for example, will now have real -mcpu=native support).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158349 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoSatisfy C++ aliasing rules, per suggestion by Chandler.
Argyrios Kyrtzidis [Tue, 12 Jun 2012 01:06:16 +0000 (01:06 +0000)]
Satisfy C++ aliasing rules, per suggestion by Chandler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158346 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert r158337 "Move PPC host-CPU detection logic from PPCSubtarget into sys::getHost...
Jakob Stoklund Olesen [Tue, 12 Jun 2012 00:58:40 +0000 (00:58 +0000)]
Revert r158337 "Move PPC host-CPU detection logic from PPCSubtarget into sys::getHostCPUName()."

This commit broke most of the PowerPC unit tests when running on
Intel/Apple.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158345 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFileCheck docs: remove leftover HTML markup.
Dmitri Gribenko [Tue, 12 Jun 2012 00:48:47 +0000 (00:48 +0000)]
FileCheck docs: remove leftover HTML markup.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158344 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFor llvm::sys::ThreadLocalImpl instead of malloc'ing the platform-specific
Argyrios Kyrtzidis [Tue, 12 Jun 2012 00:21:31 +0000 (00:21 +0000)]
For llvm::sys::ThreadLocalImpl instead of malloc'ing the platform-specific
thread local data, embed them in the class using a uint64_t and make sure
we get compiler errors if there's a platform where this is not big enough.

This makes ThreadLocal more safe for using it in conjunction with CrashRecoveryContext.

Related to crash in rdar://11434201.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158342 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agomisched: When querying RegisterPressureTracker, always save current and max pressure.
Andrew Trick [Mon, 11 Jun 2012 23:42:23 +0000 (23:42 +0000)]
misched: When querying RegisterPressureTracker, always save current and max pressure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158340 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agomisched: regpressure getMaxPressureDelta, revert accidental checkin.
Andrew Trick [Mon, 11 Jun 2012 23:42:20 +0000 (23:42 +0000)]
misched: regpressure getMaxPressureDelta, revert accidental checkin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158339 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMove PPC host-CPU detection logic from PPCSubtarget into sys::getHostCPUName().
Hal Finkel [Mon, 11 Jun 2012 23:14:31 +0000 (23:14 +0000)]
Move PPC host-CPU detection logic from PPCSubtarget into sys::getHostCPUName().

Both the new Linux functionality and the old Darwin functions have been moved.
This change also allows this information to be queried directly by clang and
other frontends (clang, for example, will now have real -mcpu=native support).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158337 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix test that depends on register allocation.
Jakob Stoklund Olesen [Mon, 11 Jun 2012 21:14:28 +0000 (21:14 +0000)]
Fix test that depends on register allocation.

The test is really checking the prolog/epilog load/store multiple
formation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158328 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoEnable MFOCRF generation on the PPC A2 core.
Hal Finkel [Mon, 11 Jun 2012 19:57:04 +0000 (19:57 +0000)]
Enable MFOCRF generation on the PPC A2 core.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158324 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRename the PPC target feature gpul to mfocrf.
Hal Finkel [Mon, 11 Jun 2012 19:57:01 +0000 (19:57 +0000)]
Rename the PPC target feature gpul to mfocrf.

The PPC target feature gpul (IsGigaProcessor) was only used for one thing:
To enable the generation of the MFOCRF instruction. Furthermore, this
instruction is available on other PPC cores outside of the G5 line. This
feature now corresponds to the HasMFOCRF flag.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158323 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd A2 to the list of PPC CPUs recognized by Linux host CPU-type detection.
Hal Finkel [Mon, 11 Jun 2012 19:56:57 +0000 (19:56 +0000)]
Add A2 to the list of PPC CPUs recognized by Linux host CPU-type detection.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158322 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix test case to work on ARM.
Jakob Stoklund Olesen [Mon, 11 Jun 2012 16:01:14 +0000 (16:01 +0000)]
Fix test case to work on ARM.

Patch by James Benton!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158316 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoEmit the two-operand form of the PPC mfcr instruction as mfocrf.
Hal Finkel [Mon, 11 Jun 2012 15:43:15 +0000 (15:43 +0000)]
Emit the two-operand form of the PPC mfcr instruction as mfocrf.

This is necessary on Linux and supported on Darwin, see PR2604.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158315 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd local CPU detection for Linux PPC.
Hal Finkel [Mon, 11 Jun 2012 15:43:13 +0000 (15:43 +0000)]
Add local CPU detection for Linux PPC.

This functionality mirrors that available on PPC/Darwin.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158314 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd POWER6 and POWER7 CPU types to the PPC backend.
Hal Finkel [Mon, 11 Jun 2012 15:43:08 +0000 (15:43 +0000)]
Add POWER6 and POWER7 CPU types to the PPC backend.

No functional change; these will be used by upcoming scheduler enhancements.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158313 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoWrite llvm-tblgen backends as functions instead of sub-classes.
Jakob Stoklund Olesen [Mon, 11 Jun 2012 15:37:55 +0000 (15:37 +0000)]
Write llvm-tblgen backends as functions instead of sub-classes.

The TableGenBackend base class doesn't do much, and will be removed
completely soon.

Patch by Sean Silva!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158311 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix a problem with the reverse bundle iterators.
Jakob Stoklund Olesen [Mon, 11 Jun 2012 15:11:12 +0000 (15:11 +0000)]
Fix a problem with the reverse bundle iterators.

This showed up the first time rend() was called on a bundled instruction
in the Mips backend.

Also avoid dereferencing end() in bundle_iterator::operator++().

We still don't have a place to put unit tests for this stuff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158310 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoObject file output from llc isn't experimental anymore.
Benjamin Kramer [Mon, 11 Jun 2012 09:40:10 +0000 (09:40 +0000)]
Object file output from llc isn't experimental anymore.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158305 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRe-enable the CMN instruction.
Bill Wendling [Mon, 11 Jun 2012 08:07:26 +0000 (08:07 +0000)]
Re-enable the CMN instruction.

We turned off the CMN instruction because it had semantics which we weren't
getting correct. If we are comparing with an immediate, then it's okay to use
the CMN instruction.
<rdar://problem/7569620>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158302 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoInstCombine: factor code better.
Benjamin Kramer [Mon, 11 Jun 2012 08:01:25 +0000 (08:01 +0000)]
InstCombine: factor code better.

No functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158301 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoInstCombine: Turn (zext A) == (B & (1<<X)-1) into A == (trunc B), narrowing the compare.
Benjamin Kramer [Sun, 10 Jun 2012 20:35:00 +0000 (20:35 +0000)]
InstCombine: Turn (zext A) == (B & (1<<X)-1) into A == (trunc B), narrowing the compare.

This saves a cast, and zext is more expensive on platforms with subreg support
than trunc is. This occurs in the BSD implementation of memchr(3), see PR12750.
On the synthetic benchmark from that bug stupid_memchr and bsd_memchr have the
same performance now when not inlining either function.

stupid_memchr: 323.0us
bsd_memchr: 321.0us
memchr: 479.0us

where memchr is the llvm-gcc compiled bsd_memchr from osx lion's libc. When
inlining is enabled bsd_memchr still regresses down to llvm-gcc memchr time,
I haven't fully understood the issue yet, something is grossly mangling the
loop after inlining.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158297 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoEnable ILP scheduling for all nodes by default on PPC.
Hal Finkel [Sun, 10 Jun 2012 19:32:29 +0000 (19:32 +0000)]
Enable ILP scheduling for all nodes by default on PPC.

Over the entire test-suite, this has an insignificantly negative average
performance impact, but reduces some of the worst slowdowns from the
anti-dep. change (r158294).

Largest speedups:
SingleSource/Benchmarks/Stanford/Quicksort - 28%
SingleSource/Benchmarks/Stanford/Towers - 24%
SingleSource/Benchmarks/Shootout-C++/matrix - 23%
MultiSource/Benchmarks/SciMark2-C/scimark2 - 19%
MultiSource/Benchmarks/MiBench/automotive-bitcount/automotive-bitcount - 15%
(matrix and automotive-bitcount were both in the top-5 slowdown list from the
anti-dep. change)

Largest slowdowns:
MultiSource/Benchmarks/McCat/03-testtrie/testtrie - 28%
MultiSource/Benchmarks/mediabench/gsm/toast/toast - 26%
MultiSource/Benchmarks/MiBench/automotive-susan/automotive-susan - 21%
SingleSource/Benchmarks/CoyoteBench/lpbench - 20%
MultiSource/Applications/d/make_dparser - 16%

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158296 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd AutoUpgrade support for the SSE4 ptest intrinsics.
Nadav Rotem [Sun, 10 Jun 2012 18:42:51 +0000 (18:42 +0000)]
Add AutoUpgrade support for the SSE4 ptest intrinsics.
Patch by Michael Kuperstein.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158295 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoUse critical anti-dep. breaking on all PPC targets, but also add other register classes.
Hal Finkel [Sun, 10 Jun 2012 11:15:36 +0000 (11:15 +0000)]
Use critical anti-dep. breaking on all PPC targets, but also add other register classes.

Using 'all' instead of 'critical' would be better because it would make it easier to
satisfy the bundling constraints, but, as noted in the FIXME, that is currently not
possible with the crs.

This yields an average 1% speedup over the entire test suite (on Power 7). Largest speedups:
SingleSource/Benchmarks/Shootout-C++/moments - 40%
MultiSource/Benchmarks/McCat/03-testtrie/testtrie - 28%
SingleSource/Benchmarks/BenchmarkGame/nsieve-bits - 26%
SingleSource/Benchmarks/McGill/misr - 23%
MultiSource/Applications/JM/ldecod/ldecod - 22%

Largest slowdowns:
SingleSource/Benchmarks/Shootout-C++/matrix - -29%
SingleSource/Benchmarks/Shootout-C++/ary3 - -22%
MultiSource/Benchmarks/BitBench/uuencode/uuencode - -18%
SingleSource/Benchmarks/Shootout-C++/ary - -17%
MultiSource/Benchmarks/MiBench/automotive-bitcount/automotive-bitcount - -15%

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158294 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd intrinsics for immediate form of XOP vprot instructions. Use i128mem instead...
Craig Topper [Sun, 10 Jun 2012 07:31:56 +0000 (07:31 +0000)]
Add intrinsics for immediate form of XOP vprot instructions. Use i128mem instead of f128mem for integer XOP instructions.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158291 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoImprove ext/trunc patterns on PPC64.
Hal Finkel [Sat, 9 Jun 2012 22:10:19 +0000 (22:10 +0000)]
Improve ext/trunc patterns on PPC64.

The PPC64 backend had patterns for i32 <-> i64 extensions and truncations that
would leave self-moves in the final assembly. Replacing those patterns with ones
based on the SUBREG builtins yields better-looking code.

Thanks to Jakob and Owen for their suggestions in this matter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158283 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoUse XOP vpcom intrinsics in patterns instead of a target specific SDNode type. Remove...
Craig Topper [Sat, 9 Jun 2012 17:02:24 +0000 (17:02 +0000)]
Use XOP vpcom intrinsics in patterns instead of a target specific SDNode type. Remove the custom lowering code that selected the SDNode type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158279 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoReplace XOP vpcom intrinsics with fewer intrinsics that take the immediate as an...
Craig Topper [Sat, 9 Jun 2012 16:46:13 +0000 (16:46 +0000)]
Replace XOP vpcom intrinsics with fewer intrinsics that take the immediate as an argument.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158278 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoHashing: Remove outdated comment. Support for reserved hash values was removed in...
Benjamin Kramer [Sat, 9 Jun 2012 15:33:28 +0000 (15:33 +0000)]
Hashing: Remove outdated comment. Support for reserved hash values was removed in r151865.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158276 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoDisabling a spurious deprecation warning about using PathV1 from within the PathV1...
Aaron Ballman [Sat, 9 Jun 2012 13:59:29 +0000 (13:59 +0000)]
Disabling a spurious deprecation warning about using PathV1 from within the PathV1 implementation file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158274 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFixing a typo in the comments.
Aaron Ballman [Sat, 9 Jun 2012 13:46:36 +0000 (13:46 +0000)]
Fixing a typo in the comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158273 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAllocate the contents of DwarfDebug's StringMaps in a single big BumpPtrAllocator.
Benjamin Kramer [Sat, 9 Jun 2012 10:34:15 +0000 (10:34 +0000)]
Allocate the contents of DwarfDebug's StringMaps in a single big BumpPtrAllocator.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158265 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoSilence a gcc-4.6 warning: GCC fails to understand that secondReg and cmpOp2 are
Duncan Sands [Sat, 9 Jun 2012 10:04:03 +0000 (10:04 +0000)]
Silence a gcc-4.6 warning: GCC fails to understand that secondReg and cmpOp2 are
correlated, and thinks that cmpOp2 may be used uninitialized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158263 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoEnable tail merging on PPC.
Hal Finkel [Sat, 9 Jun 2012 03:14:50 +0000 (03:14 +0000)]
Enable tail merging on PPC.

Tail merging had been disabled on PPC because it would disturb bundling decisions
made during pre-RA scheduling on the 970 cores. Now, however, all bundling decisions
are made during post-RA scheduling, and tail merging is generally beneficial (the
average test-suite speedup is insignificantly positive).

Largest test-suite speedups:
MultiSource/Benchmarks/mediabench/gsm/toast/toast - 30%
MultiSource/Benchmarks/BitBench/uuencode/uuencode - 23%
SingleSource/Benchmarks/Shootout-C++/ary - 21%
SingleSource/Benchmarks/Stanford/Queens - 17%

Largest slowdowns:
MultiSource/Benchmarks/MiBench/security-sha/security-sha - 24%
MultiSource/Benchmarks/McCat/03-testtrie/testtrie - 22%
MultiSource/Applications/JM/ldecod/ldecod - 14%
MultiSource/Benchmarks/mediabench/g721/g721encode/encode - 9%

This is improved by using full (instead of just critical) anti-dependency breaking,
but doing so still causes miscompiles and so cannot yet be enabled by default.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158259 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRegister pressure: added getPressureAfterInstr.
Andrew Trick [Sat, 9 Jun 2012 02:16:58 +0000 (02:16 +0000)]
Register pressure: added getPressureAfterInstr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158256 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoSketch a LiveRegMatrix analysis pass.
Jakob Stoklund Olesen [Sat, 9 Jun 2012 02:13:10 +0000 (02:13 +0000)]
Sketch a LiveRegMatrix analysis pass.

The LiveRegMatrix represents the live range of assigned virtual
registers in a Live interval union per register unit. This is not
fundamentally different from the interference tracking in RegAllocBase
that both RABasic and RAGreedy use.

The important differences are:

- LiveRegMatrix tracks interference per register unit instead of per
  physical register. This makes interference checks cheaper and
  assignments slightly more expensive. For example, the ARM D7 reigster
  has 24 aliases, so we would check 24 physregs before assigning to one.
  With unit-based interference, we check 2 units before assigning to 2
  units.

- LiveRegMatrix caches regmask interference checks. That is currently
  duplicated functionality in RABasic and RAGreedy.

- LiveRegMatrix is a pass which makes it possible to insert
  target-dependent passes between register allocation and rewriting.
  Such passes could tweak the register assignments with interference
  checking support from LiveRegMatrix.

Eventually, RABasic and RAGreedy will be switched to LiveRegMatrix.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158255 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTest commit
Jack Carter [Sat, 9 Jun 2012 00:27:55 +0000 (00:27 +0000)]
Test commit

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158250 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAlso compute MBB live-in lists in the new rewriter pass.
Jakob Stoklund Olesen [Sat, 9 Jun 2012 00:14:47 +0000 (00:14 +0000)]
Also compute MBB live-in lists in the new rewriter pass.

This deduplicates some code from the optimizing register allocators, and
it means that it is now possible to change the register allocators'
solutions simply by editing the VirtRegMap between the register
allocator pass and the rewriter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158249 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoConvert comments to proper Doxygen comments.
Dmitri Gribenko [Sat, 9 Jun 2012 00:01:45 +0000 (00:01 +0000)]
Convert comments to proper Doxygen comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158248 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRemoving strange "using" declarations form TargetInstrInfo.
Andrew Trick [Fri, 8 Jun 2012 23:56:26 +0000 (23:56 +0000)]
Removing strange "using" declarations form TargetInstrInfo.

I can't imagine why these were added. Trial and error.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158247 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoReintroduce VirtRegRewriter.
Jakob Stoklund Olesen [Fri, 8 Jun 2012 23:44:45 +0000 (23:44 +0000)]
Reintroduce VirtRegRewriter.

OK, not really. We don't want to reintroduce the old rewriter hacks.

This patch extracts virtual register rewriting as a separate pass that
runs after the register allocator. This is possible now that
CodeGen/Passes.cpp can configure the full optimizing register allocator
pipeline.

The rewriter pass uses register assignments in VirtRegMap to rewrite
virtual registers to physical registers, and it inserts kill flags based
on live intervals.

These finalization steps are the same for the optimizing register
allocators: RABasic, RAGreedy, and PBQP.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158244 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoDon't run RAFast in the optimizing regalloc pipeline.
Jakob Stoklund Olesen [Fri, 8 Jun 2012 23:15:12 +0000 (23:15 +0000)]
Don't run RAFast in the optimizing regalloc pipeline.

The fast register allocator is not supposed to work in the optimizing
pipeline. It doesn't make sense to compute live intervals, run full copy
coalescing, and then run RAFast.

Fast register allocation in the optimizing pipeline is better done by
RABasic.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158242 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agocanonicalize:
Nuno Lopes [Fri, 8 Jun 2012 22:30:05 +0000 (22:30 +0000)]
canonicalize:
-%a + 42
into
42 - %a

previously we were emitting:
-(%a + 42)

This fixes the infinite loop in PR12338. The generated code is still not perfect, though.
Will work on that next

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158237 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoStart implementing pre-ra if-converter: using speculation and selects to eliminate...
Evan Cheng [Fri, 8 Jun 2012 21:53:50 +0000 (21:53 +0000)]
Start implementing pre-ra if-converter: using speculation and selects to eliminate branches.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158234 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTargetInstrInfo hooks implemented in codegen should be declared pure virtual.
Andrew Trick [Fri, 8 Jun 2012 21:52:38 +0000 (21:52 +0000)]
TargetInstrInfo hooks implemented in codegen should be declared pure virtual.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158233 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoReapply commit 158073 with a fix (the testcase was already committed). The
Duncan Sands [Fri, 8 Jun 2012 20:15:33 +0000 (20:15 +0000)]
Reapply commit 158073 with a fix (the testcase was already committed).  The
problem was that by moving instructions around inside the function, the pass
could accidentally move the iterator being used to advance over the function
too.  Fix this by only processing the instruction equal to the iterator, and
leaving processing of instructions that might not be equal to the iterator
to later (later = after traversing the basic block; it could also wait until
after traversing the entire function, but this might make the sets quite big).
Original commit message:

Grab-bag of reassociate tweaks.  Unify handling of dead instructions and
instructions to reoptimize.  Exploit this to more systematically eliminate
dead instructions (this isn't very useful in practice but is convenient for
analysing some testcase I am working on).  No need for WeakVH any more: use
an AssertingVH instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158226 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRemove the TODO statement in the PPC README re: CTR loops
Hal Finkel [Fri, 8 Jun 2012 20:02:09 +0000 (20:02 +0000)]
Remove the TODO statement in the PPC README re: CTR loops

As Chris points out, this can now be removed!

TODO: check if the associated section on viterbi's inner loop can also be removed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158224 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoEnable PPC CTR loop formation by default.
Hal Finkel [Fri, 8 Jun 2012 19:19:53 +0000 (19:19 +0000)]
Enable PPC CTR loop formation by default.

Thanks to Jakob's help, this now causes no new test suite failures!

Over the entire test suite, this gives an average 1% speedup. The largest speedups are:
SingleSource/Benchmarks/Misc/pi - 108%
SingleSource/Benchmarks/CoyoteBench/lpbench - 54%
MultiSource/Benchmarks/Prolangs-C/unix-smail/unix-smail - 50%
SingleSource/Benchmarks/Shootout/ary3 - 32%
SingleSource/Benchmarks/Shootout-C++/matrix - 30%

The largest slowdowns are:
MultiSource/Benchmarks/mediabench/gsm/toast/toast - -30%
MultiSource/Benchmarks/Prolangs-C/bison/mybison - -25%
MultiSource/Benchmarks/BitBench/uuencode/uuencode - -22%
MultiSource/Applications/d/make_dparser - -14%
SingleSource/Benchmarks/Shootout-C++/ary - -13%

In light of these slowdowns, additional profiling work is obviously needed!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158223 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMark the PPC CTRRC and CTRRC8 register classes as non-allocatable.
Hal Finkel [Fri, 8 Jun 2012 19:02:08 +0000 (19:02 +0000)]
Mark the PPC CTRRC and CTRRC8 register classes as non-allocatable.

Marking these classes as non-alocatable allows CTR loop generation to
work correctly with the block placement passes, etc. These register
classes are currently used only by some unused TCRETURN patterns.
In future cleanup, these will be removed.

Thanks again to Jakob for suggesting this fix to the CTR loop problem!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158221 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoEnable optimization for integer ABS on X86 if Subtarget has CMOV.
Manman Ren [Fri, 8 Jun 2012 18:58:26 +0000 (18:58 +0000)]
Enable optimization for integer ABS on X86 if Subtarget has CMOV.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158220 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTest case for r158160
Manman Ren [Fri, 8 Jun 2012 18:42:37 +0000 (18:42 +0000)]
Test case for r158160

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158218 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoSched itinerary fix: Avoid static initializers.
Andrew Trick [Fri, 8 Jun 2012 18:25:47 +0000 (18:25 +0000)]
Sched itinerary fix: Avoid static initializers.

This fixes an accidental dependence on static initialization order that I introduced yesterday.

Thank you Lang!!!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158215 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix a crash in APInt::lshr when shiftAmt > BitWidth.
Chad Rosier [Fri, 8 Jun 2012 18:04:52 +0000 (18:04 +0000)]
Fix a crash in APInt::lshr when shiftAmt > BitWidth.
Patch by James Benton <jbenton@vmware.com>.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158213 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix Target->Codegen dependence.
Andrew Trick [Fri, 8 Jun 2012 17:23:27 +0000 (17:23 +0000)]
Fix Target->Codegen dependence.

Bulk move of TargetInstrInfo implementation into
TargetInstrInfoImpl. This is dirty because the code isn't part of
TargetInstrInfoImpl class, nor should it be, because the methods are
not target hooks. However, it's the current mechanism for keeping
libTarget useful outside the backend. You'll get a not-so-nice link
error if you invoke a TargetInstrInfo method that depends on CodeGen.

The TargetInstrInfoImpl class should probably be removed since it
doesn't really solve this problem.

To really fix this, we probably need separate interfaces for the
CodeGen/nonCodeGen sides of TargetInstrInfo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158212 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoBoundsChecking: add support for ConstantPointerNull. fixes a bunch of instrumentation...
Nuno Lopes [Fri, 8 Jun 2012 16:31:42 +0000 (16:31 +0000)]
BoundsChecking: add support for ConstantPointerNull. fixes a bunch of instrumentation failures in loops with reallocs

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158210 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agotest/CodeGen/Generic/APIntLoadStore.ll: Mark as XFAIL:ppc since r157911.
NAKAMURA Takumi [Fri, 8 Jun 2012 16:28:06 +0000 (16:28 +0000)]
test/CodeGen/Generic/APIntLoadStore.ll: Mark as XFAIL:ppc since r157911.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158209 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoDisable the PPC CTR-Loops pass by default.
Hal Finkel [Fri, 8 Jun 2012 15:38:25 +0000 (15:38 +0000)]
Disable the PPC CTR-Loops pass by default.

The pass itself works well, but the something in the Machine* infrastructure
does not understand terminators which define registers. Without the ability
to use the block-placement pass, etc. this causes performance regressions (and
so is turned off by default). Turning off the analysis turns off the problems
with the Machine* infrastructure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158206 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix a bug in the new PPC CTR-Loops pass.
Hal Finkel [Fri, 8 Jun 2012 15:38:23 +0000 (15:38 +0000)]
Fix a bug in the new PPC CTR-Loops pass.

The code which tests for an induction operation cannot assume that any
ADDI instruction will have a register operand because the operand could
also be a frame index; for example:
    %vreg16<def> = ADDI8 <fi#0>, 0; G8RC:%vreg16

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158205 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd the PPCCTRLoops pass: a PPC machine-code-level optimization pass to form CTR...
Hal Finkel [Fri, 8 Jun 2012 15:38:21 +0000 (15:38 +0000)]
Add the PPCCTRLoops pass: a PPC machine-code-level optimization pass to form CTR-based loop branching code.

This pass is derived from the Hexagon HardwareLoops pass. The only significant enhancement over the Hexagon
pass is that PPCCTRLoops will also attempt to delete the replaced add and compare operations if they are
no longer otherwise used. Also, invalid preheader DebugLoc is not used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158204 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert commit 158073 while waiting for a fix. The issue is that reassociate
Duncan Sands [Fri, 8 Jun 2012 13:37:30 +0000 (13:37 +0000)]
Revert commit 158073 while waiting for a fix.  The issue is that reassociate
can move instructions within the instruction list.  If the instruction just
happens to be the one the basic block iterator is pointing to, and it is
moved to a different basic block, then we get into an infinite loop due to
the iterator running off the end of the basic block (for some reason this
doesn't fire any assertions).  Original commit message:

Grab-bag of reassociate tweaks.  Unify handling of dead instructions and
instructions to reoptimize.  Exploit this to more systematically eliminate
dead instructions (this isn't very useful in practice but is convenient for
analysing some testcase I am working on).  No need for WeakVH any more: use
an AssertingVH instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158199 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agocmake: Pass the -m32 flag to modules if LLVM_BUILD_32_BITS is enabled
Tobias Grosser [Fri, 8 Jun 2012 09:41:23 +0000 (09:41 +0000)]
cmake: Pass the -m32 flag to modules if LLVM_BUILD_32_BITS is enabled

This was previously only done for executables and shared libraries, but not
for modules. As modules are essentially shared libraries (that need to be
dlopened explicitly), threating them the same as shared libraries seems
reasonable. This fixes the LLVM_BUILD_32_BITS build of Polly.

Contributed by: Ondra Hosek  <ondra.hosek@gmail.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158195 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoTeach the AsmMatcherEmitter to allow InstAlias' where the suboperands of a complex...
Owen Anderson [Fri, 8 Jun 2012 00:25:03 +0000 (00:25 +0000)]
Teach the AsmMatcherEmitter to allow InstAlias' where the suboperands of a complex operand are called out explicitly in the asm string.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158183 91177308-0d34-0410-b5e6-96231b3b80d8

12 years ago[CMake] Promote extension warnings to errors.
Michael J. Spencer [Thu, 7 Jun 2012 23:33:56 +0000 (23:33 +0000)]
[CMake] Promote extension warnings to errors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158176 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoX86: optimize generated code for integer ABS
Manman Ren [Thu, 7 Jun 2012 22:39:10 +0000 (22:39 +0000)]
X86: optimize generated code for integer ABS

This patch will generate the following for integer ABS:
      movl    %edi, %eax
      negl    %eax
      cmovll  %edi, %eax
INSTEAD OF
      movl    %edi, %ecx
      sarl    $31, %ecx
      leal    (%rdi,%rcx), %eax
      xorl    %ecx, %eax

There exists a target-independent DAG combine for integer ABS, which converts
integer ABS to sar+add+xor. For X86, we match this pattern back to neg+cmov.
This is implemented in PerformXorCombine.

rdar://10695237

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158175 91177308-0d34-0410-b5e6-96231b3b80d8

12 years ago[CMake] Order MSVC warnings numerically.
Michael J. Spencer [Thu, 7 Jun 2012 21:34:31 +0000 (21:34 +0000)]
[CMake] Order MSVC warnings numerically.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158171 91177308-0d34-0410-b5e6-96231b3b80d8

12 years ago[CMake] Adjust MSVC warnings.
Michael J. Spencer [Thu, 7 Jun 2012 21:34:15 +0000 (21:34 +0000)]
[CMake] Adjust MSVC warnings.

Remove /Wall from LLVM_ENABLE_WARNINGS (it's useless) and promote 4239
to a level 1 warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158170 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoDo not optimize the used bits of the x86 vselect condition operand, when the conditio...
Nadav Rotem [Thu, 7 Jun 2012 20:53:48 +0000 (20:53 +0000)]
Do not optimize the used bits of the x86 vselect condition operand, when the condition operand is a vector of 1-bit predicates.
This may happen on MIC devices.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158168 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix a bug in FoldSelectOpOp. Bitcast ops may change the number of vector elements...
Nadav Rotem [Thu, 7 Jun 2012 20:28:57 +0000 (20:28 +0000)]
Fix a bug in FoldSelectOpOp. Bitcast ops may change the number of vector elements, which may disagree with the select condition type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158166 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoContinue factoring computeOperandLatency. Use it for ARM hasHighOperandLatency.
Andrew Trick [Thu, 7 Jun 2012 19:42:04 +0000 (19:42 +0000)]
Continue factoring computeOperandLatency. Use it for ARM hasHighOperandLatency.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158164 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoARM getOperandLatency rewrite.
Andrew Trick [Thu, 7 Jun 2012 19:42:00 +0000 (19:42 +0000)]
ARM getOperandLatency rewrite.

Match expectations of the new latency API. Cleanup and make the logic consistent.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158163 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoARM getOperandLatency should return -1 for unknown, consistent with API
Andrew Trick [Thu, 7 Jun 2012 19:41:58 +0000 (19:41 +0000)]
ARM getOperandLatency should return -1 for unknown, consistent with API

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158162 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix ARM getInstrLatency logic to work with the current API.
Andrew Trick [Thu, 7 Jun 2012 19:41:55 +0000 (19:41 +0000)]
Fix ARM getInstrLatency logic to work with the current API.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158161 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoPR13046: we can't replace usage of SUB with CMP in the lowering phase.
Manman Ren [Thu, 7 Jun 2012 19:27:33 +0000 (19:27 +0000)]
PR13046: we can't replace usage of SUB with CMP in the lowering phase.

It will cause assertion failure later on.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158160 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoUse a base register instead of an index register with the local dynamic model.
Rafael Espindola [Thu, 7 Jun 2012 18:39:19 +0000 (18:39 +0000)]
Use a base register instead of an index register with the local dynamic model.
Fixes pr13048.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158158 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMove terminator machine verification to check MachineBasicBlock::instr_iterator inste...
Pete Cooper [Thu, 7 Jun 2012 17:41:39 +0000 (17:41 +0000)]
Move terminator machine verification to check MachineBasicBlock::instr_iterator instead of MBB::iterator

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158154 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd internal read flags to MachineInstrBuilder and hook them into the MachineOperand...
Pete Cooper [Thu, 7 Jun 2012 04:43:52 +0000 (04:43 +0000)]
Add internal read flags to MachineInstrBuilder and hook them into the MachineOperand flag of the same name

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158137 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdding a missing -S to the opt invocation.
Meador Inge [Thu, 7 Jun 2012 01:02:13 +0000 (01:02 +0000)]
Adding a missing -S to the opt invocation.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158128 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoX86: replace SUB with CMP if possible
Manman Ren [Thu, 7 Jun 2012 00:42:47 +0000 (00:42 +0000)]
X86: replace SUB with CMP if possible

This patch will optimize the following
    movq    %rdi, %rax
    subq    %rsi, %rax
    cmovsq  %rsi, %rdi
    movq    %rdi, %rax
to
    cmpq    %rsi, %rdi
    cmovsq  %rsi, %rdi
    movq    %rdi, %rax

Perform this optimization if the actual result of SUB is not used.

rdar: 11540023

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158126 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoSpell optimization name correclty.
Bill Wendling [Wed, 6 Jun 2012 23:53:23 +0000 (23:53 +0000)]
Spell optimization name correclty.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158123 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRevert r157755.
Manman Ren [Wed, 6 Jun 2012 23:53:03 +0000 (23:53 +0000)]
Revert r157755.

The commit is intended to fix rdar://11540023.
It is implemented as part of peephole optimization. We can actually implement
this in the SelectionDAG lowering phase.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158122 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAnother testcase for r156548.
Bill Wendling [Wed, 6 Jun 2012 23:36:22 +0000 (23:36 +0000)]
Another testcase for r156548.
<rdar://problem/10889741>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158121 91177308-0d34-0410-b5e6-96231b3b80d8

12 years ago[llvm-nm] Update documentation to cover object file support and arguments.
Michael J. Spencer [Wed, 6 Jun 2012 23:34:10 +0000 (23:34 +0000)]
[llvm-nm] Update documentation to cover object file support and arguments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158120 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoProperly verify liveness with bundled machine instructions.
Jakob Stoklund Olesen [Wed, 6 Jun 2012 22:34:30 +0000 (22:34 +0000)]
Properly verify liveness with bundled machine instructions.

Bundles should be treated as one atomic transaction when checking
liveness. That is how the register allocator (and VLIW targets) treats
bundles.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158116 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd accessors for all private members of DisasmContext.
Benjamin Kramer [Wed, 6 Jun 2012 20:45:10 +0000 (20:45 +0000)]
Add accessors for all private members of DisasmContext.

LLVM should be -Wunused-private-field clean now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158103 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMove RegisterClassInfo.h.
Andrew Trick [Wed, 6 Jun 2012 20:29:31 +0000 (20:29 +0000)]
Move RegisterClassInfo.h.

Allow targets to access this API. It's required for RegisterPressure.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158102 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRemove dead private member variables from gtest.
Benjamin Kramer [Wed, 6 Jun 2012 20:23:00 +0000 (20:23 +0000)]
Remove dead private member variables from gtest.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158101 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoMove RegisterPressure.h.
Andrew Trick [Wed, 6 Jun 2012 19:47:35 +0000 (19:47 +0000)]
Move RegisterPressure.h.

Make it a general utility for use by Targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158097 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRound 2 of dead private variable removal.
Benjamin Kramer [Wed, 6 Jun 2012 19:47:08 +0000 (19:47 +0000)]
Round 2 of dead private variable removal.

LLVM is now -Wunused-private-field clean except for
- lib/MC/MCDisassembler/Disassembler.h. Not sure why it keeps all those unaccessible fields.
- gtest.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158096 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRemove unused private fields found by clang's new -Wunused-private-field.
Benjamin Kramer [Wed, 6 Jun 2012 18:25:08 +0000 (18:25 +0000)]
Remove unused private fields found by clang's new -Wunused-private-field.

There are some that I didn't remove this round because they looked like
obvious stubs. There are dead variables in gtest too, they should be
fixed upstream.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158090 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoAdd support for dynamic stack realignment in the presence of dynamic allocas on
Chad Rosier [Wed, 6 Jun 2012 17:37:40 +0000 (17:37 +0000)]
Add support for dynamic stack realignment in the presence of dynamic allocas on
X86.
rdar://11496434

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158087 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoFix combine of uno && ord -> false so that the ordering of the fcmps doesn't
Chad Rosier [Wed, 6 Jun 2012 17:22:40 +0000 (17:22 +0000)]
Fix combine of uno && ord -> false so that the ordering of the fcmps doesn't
matter.
rdar://11579835

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158084 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoRemove dead debug option -disable-rematerialization.
Jakob Stoklund Olesen [Wed, 6 Jun 2012 16:22:41 +0000 (16:22 +0000)]
Remove dead debug option -disable-rematerialization.

Remat has been stable for years, and it isn't done by
LiveIntervalAnalysis any longer. (See LiveRangeEdit).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158079 91177308-0d34-0410-b5e6-96231b3b80d8

12 years agoGrab-bag of reassociate tweaks. Unify handling of dead instructions and
Duncan Sands [Wed, 6 Jun 2012 14:53:10 +0000 (14:53 +0000)]
Grab-bag of reassociate tweaks.  Unify handling of dead instructions and
instructions to reoptimize.  Exploit this to more systematically eliminate
dead instructions (this isn't very useful in practice but is convenient for
analysing some testcase I am working on).  No need for WeakVH any more: use
an AssertingVH instead.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158073 91177308-0d34-0410-b5e6-96231b3b80d8