Commit Graph

5747 Commits

Author SHA1 Message Date
Nadav Rotem
90e11dc8ad When combining consecutive stores allow loads in between the stores, if the loads do not alias.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168832 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-29 00:00:08 +00:00
Craig Topper
327e4cba09 Refactor to make helper method static.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168557 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-25 08:08:58 +00:00
Craig Topper
c1aa638fff Remove duplicate check of LimitFloatPrecision. It was already checked earlier before IsExp10 could be set to true.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168553 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-25 00:48:58 +00:00
Craig Topper
915562e762 Factor common code out of individual if blocks into common tail.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168551 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-25 00:15:07 +00:00
Craig Topper
134f78cf41 Remove redundant calls to getCurDebugLoc in visitIntrinsicCall. It's already called at the start of the function and captured in a local variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168548 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-24 23:05:23 +00:00
Craig Topper
538cd48455 Refactor a bit to make some helper methods static.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168546 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-24 18:52:06 +00:00
Craig Topper
b315772cc9 Factor some common code out of individual if blocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168538 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-24 08:22:37 +00:00
Craig Topper
5d1e089eaa Refactor a bit to make some helper functions static.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168524 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-23 18:38:31 +00:00
Patrik Hägglund
d5f03186e5 Cleanup: Simplify loop end logic in computeRegisterProperties().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168507 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-23 08:35:04 +00:00
Lang Hames
b47ec4087c llvm.fmuladd.* lowering should be checking isOperationLegalOrCustom, rather than
isOperationLegal. Thanks to Craig Topper for pointing this out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168485 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-22 03:31:45 +00:00
Eli Friedman
43147afd71 Mark FP_EXTEND form v2f32 to v2f64 as "expand" for ARM NEON. Patch by Pete Couperus.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168240 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-17 01:52:46 +00:00
Craig Topper
08ac4691c6 Remove conditions from 'else if' that were guaranteed by preceding 'if'.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168191 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-16 20:01:39 +00:00
Craig Topper
df0ea8dcad Factor out the final FADD that's common to multiple code paths in the visitLog* functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168183 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-16 19:08:44 +00:00
Craig Topper
9bd4dd742e Factor some common code to reduce compile size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168143 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-16 07:48:23 +00:00
Eli Friedman
846ce8ea67 Mark FP_ROUND for converting NEON v2f64 to v2f32 as expand. Add a missing
case to vector legalization so this actually works.

Patch by Pete Couperus.  Fixes PR12540.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168107 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-15 22:44:27 +00:00
Craig Topper
490104720d Add llvm.ceil, llvm.trunc, llvm.rint, llvm.nearbyint intrinsics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168025 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-15 06:51:10 +00:00
Rafael Espindola
8e2b8ae3b1 Handle DAG CSE adding new uses during ReplaceAllUsesWith. Fixes PR14333.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167912 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-14 05:08:56 +00:00
Duncan Sands
b2df01ab2a Codegen support for arbitrary vector getelementptrs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167830 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-13 13:01:58 +00:00
Andrew Trick
ad1cc1d1bf misched: Allow subtargets to enable misched and dependent options.
This allows me to begin enabling (or backing out) misched by default
for one subtarget at a time. To run misched we typically want to:
- Disable SelectionDAG scheduling (use the source order scheduler)
- Enable more aggressive coalescing (until we decide to always run the coalescer this way)
- Enable MachineScheduler pass itself.

Disabling PostRA sched may follow for some subtargets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167826 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-13 08:47:29 +00:00
Andrew Trick
ae692f2bae misched: Infrastructure for weak DAG edges.
This adds support for weak DAG edges to the general scheduling
infrastructure in preparation for MachineScheduler support for
heuristics based on weak edges.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167738 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-12 19:28:57 +00:00
Andrew Trick
a78d3228e8 ScheduleDAG interface. Added OrderKind to distinguish nonregister dependencies.
This is in preparation for adding "weak" DAG edges, but generally
simplifies the design.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167435 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-06 03:13:46 +00:00
Owen Anderson
efcc1aec64 Be careful not to optimize a SELECT_CC into a SETCC post-legalization if the SETCC node would be illegal.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167344 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-03 00:17:26 +00:00
Manman Ren
0a1544d2fd OutputArg: added an index of the original argument to match the change to
InputArg in r165616.

This will enable us to get the actual type for both InputArg and OutputArg.

rdar://9932559


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167265 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-01 23:49:58 +00:00
Chandler Carruth
426c2bf5cd Revert the majority of the next patch in the address space series:
r165941: Resubmit the changes to llvm core to update the functions to
         support different pointer sizes on a per address space basis.

Despite this commit log, this change primarily changed stuff outside of
VMCore, and those changes do not carry any tests for correctness (or
even plausibility), and we have consistently found questionable or flat
out incorrect cases in these changes. Most of them are probably correct,
but we need to devise a system that makes it more clear when we have
handled the address space concerns correctly, and ideally each pass that
gets updated would receive an accompanying test case that exercises that
pass specificaly w.r.t. alternate address spaces.

However, from this commit, I have retained the new C API entry points.
Those were an orthogonal change that probably should have been split
apart, but they seem entirely good.

In several places the changes were very obvious cleanups with no actual
multiple address space code added; these I have not reverted when
I spotted them.

In a few other places there were merge conflicts due to a cleaner
solution being implemented later, often not using address spaces at all.
In those cases, I've preserved the new code which isn't address space
dependent.

This is part of my ongoing effort to clean out the partial address space
code which carries high risk and low test coverage, and not likely to be
finished before the 3.2 release looms closer. Duncan and I would both
like to see the above issues addressed before we return to these
changes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167222 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-01 09:14:31 +00:00
Chandler Carruth
ece6c6bb63 Revert the series of commits starting with r166578 which introduced the
getIntPtrType support for multiple address spaces via a pointer type,
and also introduced a crasher bug in the constant folder reported in
PR14233.

These commits also contained several problems that should really be
addressed before they are re-committed. I have avoided reverting various
cleanups to the DataLayout APIs that are reasonable to have moving
forward in order to reduce the amount of churn, and minimize the number
of commits that were reverted. I've also manually updated merge
conflicts and manually arranged for the getIntPtrType function to stay
in DataLayout and to be defined in a plausible way after this revert.

Thanks to Duncan for working through this exact strategy with me, and
Nick Lewycky for tracking down the really annoying crasher this
triggered. (Test case to follow in its own commit.)

After discussing with Duncan extensively, and based on a note from
Micah, I'm going to continue to back out some more of the more
problematic patches in this series in order to ensure we go into the
LLVM 3.2 branch with a reasonable story here. I'll send a note to
llvmdev explaining what's going on and why.

Summary of reverted revisions:

r166634: Fix a compiler warning with an unused variable.
r166607: Add some cleanup to the DataLayout changes requested by
         Chandler.
r166596: Revert "Back out r166591, not sure why this made it through
         since I cancelled the command. Bleh, sorry about this!
r166591: Delete a directory that wasn't supposed to be checked in yet.
r166578: Add in support for getIntPtrType to get the pointer type based
         on the address space.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167221 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-01 08:07:29 +00:00
Owen Anderson
607ebde651 Add a few more simple fast-math constant propagations and cancellations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167200 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-01 02:00:53 +00:00
Chad Rosier
daeec8fad3 [inline asm] Get the mayLoad/mayStore directly from the MIOp_ExtraInfo operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167050 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 20:39:19 +00:00
Chad Rosier
dfa4cecb1e Add a comment for r167040.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167046 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 20:01:12 +00:00
Chad Rosier
3d71688476 [inline asm] Implement mayLoad and mayStore for inline assembly. In general,
the MachineInstr MayLoad/MayLoad flags are based on the tablegen implementation.
For inline assembly, however, we need to compute these based on the constraints.

Revert r166929 as this is no longer needed, but leave the test case in place. 
rdar://12033048 and PR13504

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167040 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-30 19:11:54 +00:00
Ulrich Weigand
e669c930a6 In various places throughout the code generator, there were special
checks to avoid performing compile-time arithmetic on PPCDoubleDouble.

Now that APFloat supports arithmetic on PPCDoubleDouble, those checks
are no longer needed, and we can treat the type like any other.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166958 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-29 18:35:49 +00:00
Micah Villmow
b8bce928f4 Back out r166591, not sure why this made it through since I cancelled the command. Bleh, sorry about this!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166596 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24 17:25:11 +00:00
Micah Villmow
2f87640b86 Delete a directory that wasn't supposed to be checked in yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166591 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24 17:20:04 +00:00
Micah Villmow
aa76e9e2cf Add in support for getIntPtrType to get the pointer type based on the address space.
This checkin also adds in some tests that utilize these paths and updates some of the
clients.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166578 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24 15:52:52 +00:00
Michael Liao
1a5cc710ee Teach DAG combine to fold (buildvec (Xint2fp x)) to (Xint2fp (buildvec x))
- If more than 1 elemennts are defined and target supports the vectorized
  conversion, use the vectorized one instead to reduce the strength on
  conversion operation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166546 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24 04:14:18 +00:00
Jakub Staszak
adf38913f8 Keep coding standard. Don't evaluate getNumOperands() every time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166531 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-24 00:38:25 +00:00
Michael Liao
fac14ab179 Clean up code and put transformation on (build_vec (ext x)) into a helper func
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166519 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-23 23:06:52 +00:00
Nadav Rotem
ee0ce15ce1 Make the indirect branch optimization deterministic. No functionality change.
Patch by Daniel Reynaud.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166501 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-23 21:05:33 +00:00
Benjamin Kramer
63a4c24616 Symbol hygiene: Make sure declarations and definitions match, make helper functions static.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166376 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-20 12:53:26 +00:00
Shuxin Yang
cfc6cb0c61 1. Remove noreturn attribute from __builtin_debugtrap().
(The change at Clang side was committed in r166345)

2. Cosmetic change in order to conform to coding standards. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166350 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 23:00:20 +00:00
Shuxin Yang
970755e519 This patch is to fix radar://8426430. It is about llvm support of __builtin_debugtrap()
which is supposed to consistently raise SIGTRAP across all systems. In contrast,
__builtin_trap() behave differently on different systems. e.g. it raises SIGTRAP on ARM, and
SIGILL on X86. The purpose of __builtin_debugtrap() is to consistently provide "trap"
functionality, in the mean time preserve the compatibility with on gcc on __builtin_trap().

  The X86 backend is already able to handle debugtrap(). This patch is to:
  1) make front-end recognize "__builtin_debugtrap()" (emboddied in the one-line change to Clang).
  2) In DAG legalization phase, by default, "debugtrap" will be replaced with "trap", which
     make the __builtin_debugtrap() "available" to all existing ports without the hassle of
     changing their code.
  3) If trap-function is specified (via -trap-func=xyz to llc), both __builtin_debugtrap() and
     __builtin_trap() will be expanded into the function call of the specified trap function.
    This behavior may need change in the future.

  The provided testing-case is to make sure 2) and 3) are working for ARM port, and we
already have a testing case for x86. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166300 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 20:11:16 +00:00
Michael Liao
9aecdb51c7 Simplify condition checking as CONCAT assume all inputs of the same type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166260 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-19 03:17:00 +00:00
Nadav Rotem
1c5bf3f429 In SimplifySelectOps we pulled two loads through a select node despite the fact that one was dependent on the other.
rdar://12513091



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166196 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-18 18:06:48 +00:00
Michael Liao
07edaf3801 Revert part of r166049 back and enable test case in r166125.
- Folding (trunc (concat ... X )) to (concat ... (trunc X) ...) is valid
  when '...' are all 'undef's.
- r166125 relies on this transformation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166155 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-17 23:45:54 +00:00
Michael Liao
4031e9018b Revert r166049
- In general, it's unsafe for this transformation.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166135 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-17 22:41:15 +00:00
Michael Liao
13429e224c Teach DAG combine to fold (extract_subvec (concat v1, ..) i) to v_i
- If the extracted vector has the same type of all vectored being concatenated
  together, it should be simplified directly into v_i, where i is the index of
  the element being extracted.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166125 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-17 20:48:33 +00:00
Evan Cheng
d4f759696d Add a really faster pre-RA scheduler (-pre-RA-sched=linearize). It doesn't use
any scheduling heuristics nor does it build up any scheduling data structure
that other heuristics use. It essentially linearize by doing a DFA walk but
it does handle glues correctly.

IMPORTANT: it probably can't handle all the physical register dependencies so
it's not suitable for x86. It also doesn't deal with dbg_value nodes right now
so it's definitely is still WIP.

rdar://12474515


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166122 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-17 19:39:36 +00:00
Michael Liao
272ea03239 Teach DAG combine to fold (trunc (fptoXi x)) to (fptoXi x)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166049 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-16 19:38:35 +00:00
Jakob Stoklund Olesen
e4f273908b Freeze the reserved registers as soon as isel is complete.
Also provide an MRI::getReservedRegs() function to access the frozen
register set, and isReserved() and isAllocatable() methods to test
individual registers.

The various implementations of TRI::getReservedRegs() are quite
complicated, and many passes need to look at the reserved register set.
This patch makes it possible for these passes to use the cached copy in
MRI, avoiding a lot of malloc traffic and repeated calculations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165982 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-15 21:33:06 +00:00
Micah Villmow
2c39b15073 Resubmit the changes to llvm core to update the functions to support different pointer sizes on a per address space basis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165941 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-15 16:24:29 +00:00
Ulrich Weigand
7bbb9c7b4a Fix big-endian codegen bug in DAGTypeLegalizer::ExpandRes_BITCAST
On PowerPC, a bitcast of <16 x i8> to i128 may run through a code
path in ExpandRes_BITCAST that attempts to do an intermediate
bitcast to a <4 x i32> vector, and then construct the Hi and Lo parts
of the resulting i128 by pairing up two of those i32 vector elements
each.  The code already recognizes that on a big-endian system, the
first two vector elements form the Hi part, and the final two vector
elements form the Lo part (vice-versa from the little-endian situation).

However, we also need to take endianness into account when forming each
of those separate pairs:  on a big-endian system, vector element 0 is
the *high* part of the pair making up the Hi part of the result, and
vector element 1 is the low part of the pair.  The code currently always
uses vector element 0 as the low part and vector element 1 as the high
part, as is appropriate for little-endian platforms only.

This patch fixes this by swapping the vector elements as they are
paired up as appropriate.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165802 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-12 15:42:58 +00:00