Commit Graph

9535 Commits

Author SHA1 Message Date
Eric Christopher
f27805b5c5 Have fast-isel understand llvm.objectsize. Update testcase for slightly
different codegen.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98244 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11 06:20:22 +00:00
Daniel Dunbar
979ba5b3c7 MC/Mach-O: Implement "absolutizing" semantics of .set, by evaluating the assembly time value of variables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98241 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11 05:53:37 +00:00
Chris Lattner
2968943463 add support, testcases, and dox for the new GHC calling
convention.  Patch by David Terei!



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98212 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-11 00:22:57 +00:00
Chris Lattner
f2f64e9063 fix PR6533 by updating the br(xor) code to remember the case
when it looked past a trunc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98203 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 23:46:44 +00:00
Dan Gohman
0891d752a6 Constant-fold GEP-of-GEP into a single GEP.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98178 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 19:31:51 +00:00
Dan Gohman
a77338476f Fix whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98173 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 19:00:54 +00:00
Tobias Grosser
cbb524e2a9 Fix make check with cmake/lit
PR6540: Set the newly introduced variables ENABLE_SHARED and
SHLIBPATH_VAR in lit.site.cfg not only in the autoconf build, but also
in a cmake one.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98171 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 18:41:59 +00:00
Richard Osborne
850f1cd3c0 Handle MVT::i64 type in DAG combine for ISD::ADD. Fold 64 bit
expression add(add(mul(x,y),a),b) -> lmul(x,y,a,b) if all
operands are zero extended.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98168 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 18:12:27 +00:00
Bob Wilson
c81f0af6b7 Testcase for pr6552. I changed the code to use "ip" instead of "fp" because
the "fp" register name is not valid on Darwin, and the "ip" register name was
broken for all ARM targets.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98166 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 17:54:11 +00:00
Richard Osborne
2dacd1e987 Fold add(add(mul(x,y),a),b) -> lmul(x,y,a,b) if the intermediate
results are unused elsewhere.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98157 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 16:19:31 +00:00
Richard Osborne
a2cc0613d0 Prefer LMUL to MACCU as LMUL has no tied operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98153 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 13:27:10 +00:00
Richard Osborne
a7e78402b8 Custom lower (S|U)MUL_LOHI -> MACC(S|U)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98152 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 13:20:07 +00:00
Richard Osborne
ebc64cf780 Lower add (mul a, b), c into MACCU / MACCS nodes which translate
directly to the maccu / maccs instructions. We handle this in
ExpandADDSUB since after type legalisation it is messy to
recognise these operations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98150 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 11:41:08 +00:00
Richard Osborne
1250ac8a09 Convert test to FileCheck.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98148 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 11:24:03 +00:00
Evan Cheng
3a624227c0 Fix typo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98142 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 07:07:55 +00:00
Evan Cheng
e025908cf4 Unbreak test on Linux.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98141 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 07:07:45 +00:00
Evan Cheng
fac4f1f181 Enable machine cse pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98132 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 03:07:41 +00:00
Daniel Dunbar
a015c1c876 MC/Mach-O: Use the SECTDIFF relocation type for (A - B + constant) where A is external.
- I'm not sure why, but this is what 'as' does.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98115 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-10 00:58:25 +00:00
Dan Gohman
4ecbca558f Avoid analyzing instructions in blocks not reachable from the entry block.
They are lots of trouble, and they don't matter. This fixes PR6559.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98103 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 23:46:50 +00:00
Daniel Dunbar
f291be3159 MC/X86: Rename alternate spellings of ADD{8,16,32} and mark as "code gen only" so they don't get selected by the asm matcher.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98098 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 22:50:46 +00:00
Daniel Dunbar
1e8ee89c21 MC/X86: Rename alternate spellings of CMP{8,16,32} and mark as "code gen only" so they don't get selected by the asm matcher.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98097 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 22:50:40 +00:00
Daniel Dunbar
f3a066f7c3 MC/Mach-O: For PCrel relocations, we need to compensate for the PCrel adjustment when determining if we need a scattered relocation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98082 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 21:27:58 +00:00
Dale Johannesen
f7b730425f The address of an indirect call must be in R12 on Darwin.
Make it so.  (This patch is in LowerCall_Darwin, which seems
to be used by SVR4 code as well; since that doesn't belong here,
I haven't worried about this case.)



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98077 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 20:15:42 +00:00
Richard Osborne
ad4f66c76f In cases where the carry / borrow unused converted ladd / lsub
to an add or a sub.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98059 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 16:34:25 +00:00
Richard Osborne
7b871b3464 Add DAG combine for ladd / lsub.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98057 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 16:07:47 +00:00
Dan Gohman
cbac7f1630 Make isLCSSA ignore uses in blocks not reachable from the entry block,
as LCSSA no longer transforms such uses.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98033 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 01:53:33 +00:00
Devang Patel
4b945500a5 Start using DIFile. See updated SourceLevelDebugging.html for more information.
This patch updates LLVMDebugVersion to 8.
Debug info descriptors encoded using LLVMDebugVersion 7 is supported.

Corresponding llvmgcc and clang FE commits are required.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98020 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-09 00:44:10 +00:00
Chris Lattner
0d50c7620d move .set generation out of DwarfPrinter into AsmPrinter and
MCize it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98010 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 23:58:37 +00:00
Chris Lattner
57578766aa simplify EmitSectionOffset to always use .set if it is
available, the only thing this affects is that we produce
.set in one case we didn't before, which shouldn't harm
anything.  Make EmitSectionOffset call EmitDifference
instead of duplicating it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98005 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 23:23:25 +00:00
Bob Wilson
f5fd499791 Fix a crash compiling 254.gap for Thumb2. The Thumb2 add/sub with 12-bit
immediate instructions cannot set the condition codes, so they do not have
the extra cc_out operand.  We hit an assertion during tail duplication
because the instruction being duplicated had more operands that expected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98001 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 22:56:15 +00:00
Evan Cheng
687fed3530 Re-commit 97860 with fix. getMallocAllocatedType may return null.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98000 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 22:54:36 +00:00
Kevin Enderby
0e822407b2 Fix the vmxon entry in the X86InstrInfo.td so it has the correct prefix bytes
for the encoding and is not the same as vmptrld.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97992 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 22:17:26 +00:00
Daniel Dunbar
b2b4acd757 MC/Macho-O: Align the zerofill section itself to the maximum alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97991 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 22:03:42 +00:00
Daniel Dunbar
37fad5ce4d MC/Mach-O: Fix address compution for zero fill sections.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97984 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 21:10:42 +00:00
Daniel Dunbar
b93c72cda4 X86: Fix encoding for TEST{8,16,32}rr.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97982 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 21:10:36 +00:00
Evan Cheng
dc444e9a23 Add documentation on sibling call optimization. Rename tailcall2.ll test to sibcall.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97980 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 21:05:02 +00:00
John McCall
197d009e6b Revert r97726 and r97728 at ddunbar's request; we want to solve this
some other way when it comes to be necessary.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97972 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-08 20:02:05 +00:00
Wesley Peck
c2bf2bbe93 Re-committing the failed r97807 commit with changes to eliminate warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97891 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 23:23:12 +00:00
Anton Korobeynikov
ce7bf1c55f Initial bits of ARMv4-only support.
Patch by John Tytgat!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97886 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 19:39:36 +00:00
Anton Korobeynikov
9aff323a07 Do not use '&' prefix for globals when register base field is non-zero, otherwise msp430-as will silently miscompile the code (TI's assembler report an error though).
This fixes PR6349

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97877 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 11:41:12 +00:00
Eric Christopher
27ceaa13f8 Migrate _chk call lowering from SimplifyLibCalls to InstCombine. Stub
out the remainder of the calls that we should lower in some way and
move the tests to the new correct directory. Fix up tests that are now
optimized more than they were before by -instcombine.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97875 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 10:50:38 +00:00
Chris Lattner
0a7f442314 revert r97807, it introduced build warnings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97869 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 04:32:46 +00:00
Eric Christopher
75f0d6953a Temporarily revert:
Log:
Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.

Modified:
   llvm/trunk/lib/Transforms/InstCombine/InstCombineCalls.cpp
   llvm/trunk/test/Transforms/InstCombine/objsize.ll

It appears to be causing swb and nightly test failures.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97866 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 03:11:35 +00:00
Evan Cheng
fc8ccfedbb Transform @llvm.objectsize to integer if the argument is a result of malloc of known size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97860 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 01:01:42 +00:00
Erick Tryzelaar
e623050048 Add a LLVMWriteBitcodeToFD that exposes the raw_fd_ostream options.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97858 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-06 00:30:06 +00:00
Devang Patel
b0e59dda18 Test case for r97851.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97852 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 23:35:04 +00:00
Charles Davis
314fef6127 Don't emit global symbols into the (__TEXT,__ustring) section on Darwin. This
is a workaround for <rdar://problem/7672401/> (which I filed).

This let's us build Wine on Darwin, and it gets the Qt build there a little bit
further (so Doug says).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97845 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 22:28:45 +00:00
Jakob Stoklund Olesen
53e000bac3 Better handling of dead super registers in LiveVariables. We used to do this:
CALL ... %RAX<imp-def>
   ... [not using %RAX]
   %EAX = ..., %RAX<imp-use, kill>
   RET %EAX<imp-use,kill>

Now we do this:

   CALL ... %RAX<imp-def, dead>
   ... [not using %RAX]
   %EAX = ...
   RET %EAX<imp-use,kill>

By not artificially keeping %RAX alive, we lower register pressure a bit.

The correct number of instructions for 2008-08-05-SpillerBug.ll is obviously
55, anybody can see that. Sheesh.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97838 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 21:49:17 +00:00
Jakob Stoklund Olesen
a76e816844 We don't really care about correct register liveness information after the
post-ra scheduler has run. Disable the verifier checks that late in the game.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97837 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 21:49:13 +00:00
Jakob Stoklund Olesen
580bba2b0d Avoid creating bad PHI instructions when BR is being const-folded.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 21:49:10 +00:00
Evan Cheng
a79eb387ac Safely turn memset_chk etc. to non-chk variant if the known object size is >= memset / memcpy / memmove size.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97828 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 20:59:47 +00:00
Evan Cheng
a862326bc7 Instcombine should turn llvm.objectsize of a alloca with static size to an integer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97827 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 20:47:23 +00:00
Chris Lattner
ac834e7a5f fix bss section printing for cell, patch by Kalle Raiskila!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97814 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 18:55:36 +00:00
Chris Lattner
4c5fb1a311 fix PR6512, a case where instcombine would incorrectly merge loads
from different addr spaces.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97813 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 18:53:28 +00:00
Wesley Peck
c4155d591b Reworking the stack layout that the MicroBlaze backend generates.
The MicroBlaze backend was generating stack layouts that did not
conform correctly to the ABI. This update generates stack layouts
which are closer to what GCC does.

Variable arguments support was added as well but the stack layout
for varargs has not been finalized.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97807 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 15:26:02 +00:00
Chris Lattner
f34f48c578 Fix PR6503. This turned into a much more interesting and nasty bug. Various
parts of the cmp|cmp and cmp&cmp folding logic wasn't prepared for vectors
(unrelated to the bug but noticed while in the code) and the code was 
*definitely* not safe to use by the (cast icmp)|(cast icmp) handling logic
that I added in r95855.  Fix all this up by changing the various routines
to more consistently use IRBuilder and not pass in the I which had the wrong 
type.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97801 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 08:46:26 +00:00
Chris Lattner
76e70312db make these less sensitive to temporary naming.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97799 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 08:43:33 +00:00
Chris Lattner
d878ca6cab remove this testcase, it isn't clear what it was testing and it is subsumed by or.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97798 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 08:43:06 +00:00
Evan Cheng
4cae133780 Fix an oops in x86 sibcall optimization. If the ByVal callee argument is itself passed as a pointer, then it's obviously not safe to do a tail call.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97797 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 08:38:04 +00:00
Chris Lattner
893075f46e fix a nice subtle reassociate bug which would only occur
in a very specific use pattern embodied in the carefully
reduced testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97794 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 07:18:54 +00:00
Chris Lattner
18fdabadca Fix PR6497, a bug where we'd fold a load into an addc
node which has a flag.  That flag in turn was used by an
already-selected adde which turned into an ADC32ri8 which
used a selected load which was chained to the load we
folded.  This flag use caused us to form a cycle.  Fix
this by not ignoring chains in IsLegalToFold even in
cases where the isel thinks it can.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97791 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 06:19:13 +00:00
Chris Lattner
1beaf41ef6 cleanup
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97790 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 06:17:43 +00:00
Evan Cheng
26e19ba9aa Rever 96389 and 96990. They are causing some miscompilation that I do not fully understand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97782 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 03:08:23 +00:00
Bill Wendling
18ce64e069 Revert r97766. It's deleting a tag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97768 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 00:33:59 +00:00
Bill Wendling
37b52ee6d9 Micro-optimization:
This code:

float floatingPointComparison(float x, float y) {
    double product = (double)x * y;
    if (product == 0.0)
        return product;
    return product - 1.0;
}

produces this:

_floatingPointComparison:
0000000000000000        cvtss2sd        %xmm1,%xmm1
0000000000000004        cvtss2sd        %xmm0,%xmm0
0000000000000008        mulsd           %xmm1,%xmm0
000000000000000c        pxor            %xmm1,%xmm1
0000000000000010        ucomisd         %xmm1,%xmm0
0000000000000014        jne             0x00000004
0000000000000016        jp              0x00000002
0000000000000018        jmp             0x00000008
000000000000001a        addsd           0x00000006(%rip),%xmm0
0000000000000022        cvtsd2ss        %xmm0,%xmm0
0000000000000026        ret

The "jne/jp/jmp" sequence can be reduced to this instead:

_floatingPointComparison:
0000000000000000        cvtss2sd        %xmm1,%xmm1
0000000000000004        cvtss2sd        %xmm0,%xmm0
0000000000000008        mulsd           %xmm1,%xmm0
000000000000000c        pxor            %xmm1,%xmm1
0000000000000010        ucomisd         %xmm1,%xmm0
0000000000000014        jp              0x00000002
0000000000000016        je              0x00000008
0000000000000018        addsd           0x00000006(%rip),%xmm0
0000000000000020        cvtsd2ss        %xmm0,%xmm0
0000000000000024        ret

for a savings of 2 bytes.

This xform can happen when we recognize that jne and jp jump to the same "true"
MBB, the unconditional jump would jump to the "false" MBB, and the "true" branch
is the fall-through MBB.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97766 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-05 00:24:26 +00:00
Johnny Chen
267124cff2 Drop the ".w" qualifier for t2UXTB16* instructions as there is no 16-bit version
of either sxtb16 or uxtb16, and the unified syntax does not specify ".w".

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97760 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04 22:24:41 +00:00
Bob Wilson
436e6e7b5c pr6478: The frame pointer spill frame index is only defined when there is a
frame pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97755 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04 21:42:36 +00:00
Bob Wilson
bbf39b0fd9 pr6480: Don't try producing ld/st-multiple instructions when the address is
an undef value.  This is only going to come up for bugpoint-reduced tests --
correct programs will not access memory at undefined addresses -- so it's not
worth the effort of doing anything more aggressive.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97745 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04 21:04:38 +00:00
Jakob Stoklund Olesen
3cfe01072c Fix the remaining MUL8 and DIV8 to define AX instead of AL,AH.
These instructions technically define AL,AH, but a trick in X86ISelDAGToDAG
reads AX in order to avoid reading AH with a REX instruction.

Fix PR6489.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97742 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04 20:42:07 +00:00
Dan Gohman
0ef701e6ae Fix recognition of 16-bit bswap for C front-ends which emit the
clobber registers in a different order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97741 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04 19:58:08 +00:00
John McCall
7b7b90769a Teach lit to honor conditional directives. The syntax is:
IF(condition(value)):
If the value satisfies the condition, the line is processed by lit;  otherwise
it is skipped.  A test with no unignored directives is resolved as Unsupported.

The test suite is responsible for defining conditions;  conditions are unary
functions over strings.  I've defined two conditions in the LLVM test suite,
TARGET (with values like those in TARGETS_TO_BUILD) and BINDING (with values
like those in llvm_bindings).  So for example you can write:
  IF(BINDING(ocaml)): RUN: %blah %s -o -
and the RUN line will only execute if LLVM was configured with the ocaml
bindings.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97726 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04 09:36:50 +00:00
Nick Lewycky
5bf7f88ea2 Make the 'icmp pred trunc(ext(X)), CST --> icmp pred X, ext(trunc(CST))'
transformation much more careful. Truncating binary '01' to '1' sounds like it's
safe until you realize that it switched from positive to negative under a signed
interpretation, and that depends on the icmp predicate.

Also a few miscellaneous cleanups.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97721 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-04 06:54:10 +00:00
Erick Tryzelaar
7eb4beb4cd Expose the rest of the llvm-c scalar opts to ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97685 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03 23:51:34 +00:00
Chris Lattner
c8e14b3d37 fix incorrect folding of icmp with undef, PR6481.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97659 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03 19:46:03 +00:00
Dan Gohman
ed78dbafd0 Revert r97580; that's not the right way to fix this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97639 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03 04:36:42 +00:00
Bill Wendling
7d9f2b93a3 This test case:
long test(long x) { return (x & 123124) | 3; }

Currently compiles to:

_test:
        orl     $3, %edi
        movq    %rdi, %rax
        andq    $123127, %rax
        ret

This is because instruction and DAG combiners canonicalize

  (or (and x, C), D) -> (and (or, D), (C | D))

However, this is only profitable if (C & D) != 0. It gets in the way of the
3-addressification because the input bits are known to be zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97616 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-03 00:35:56 +00:00
Erick Tryzelaar
16609f3c5c Remove module providers from ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97609 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 23:59:00 +00:00
Chris Lattner
d1b7382983 Fix some issues in WalkChainUsers dealing with
CopyToReg/CopyFromReg/INLINEASM.  These are annoying because
they have the same opcode before an after isel.  Fix this by
setting their NodeID to -1 to indicate that they are selected,
just like what automatically happens when selecting things that
end up being machine nodes.

With that done, give IsLegalToFold a new flag that causes it to
ignore chains.  This lets the HandleMergeInputChains routine be
the one place that validates chains after a match is successful,
enabling the new hotness in chain processing.  This smarter
chain processing eliminates the need for "PreprocessRMW" in the
X86 and MSP430 backends and enables MSP to start matching it's
multiple mem operand instructions more aggressively.

I currently #if out the dead code in the X86 backend and MSP 
backend, I'll remove it for real in a follow-on patch.

The testcase changes are:
  test/CodeGen/X86/sse3.ll: we generate better code
  test/CodeGen/X86/store_op_load_fold2.ll: PreprocessRMW was 
      miscompiling this before, we now generate correct code
      Convert it to filecheck while I'm at it.
  test/CodeGen/MSP430/Inst16mm.ll: Add a testcase for mem/mem
      folding to make anton happy. :)




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97596 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 22:20:06 +00:00
Chris Lattner
71b58d6c5e this testcase is failing because pic16 doesn't define a reg/reg
xor pattern.  I have no plans to fix this XFAIL.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97587 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 20:48:24 +00:00
Erick Tryzelaar
705443ffd3 Add support for use to ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97586 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 20:32:32 +00:00
Chris Lattner
1aa3e9269f xfail this for now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97584 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 19:53:25 +00:00
Dan Gohman
c4f7ec85ec When expanding an expression such as (A + B + C + D), sort the operands
by loop depth and emit loop-invariant subexpressions outside of loops.
This speeds up MultiSource/Applications/viterbi and others.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97580 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 19:32:21 +00:00
Chris Lattner
5b5a1fe52e clean up some testcases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97576 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 18:56:03 +00:00
Chris Lattner
82dd3d38d9 Fix the xfail I added a couple of patches back. The issue
was that we weren't properly handling the case when interior
nodes of a matched pattern become dead after updating chain
and flag uses.  Now we handle this explicitly in 
UpdateChainsAndFlags.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97561 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 07:50:03 +00:00
Chris Lattner
c6d7ad3c7d Rewrite chain handling validation and input TokenFactor handling
stuff now that we don't care about emulating the old broken 
behavior of the old isel.  This eliminates the 
'CheckChainCompatible' check (along with IsChainCompatible) which
did an incorrect and inefficient scan *up* the chain nodes which
happened as the pattern was being formed and does the validation
at the end in HandleMergeInputChains when it forms a structural 
pattern.  This scans "down" the graph, which means that it is
quickly bounded by nodes already selected.  This also handles
token factors that get "trapped" in the dag.

Removing the CheckChainCompatible nodes also shrinks the 
generated tables by about 6K for X86 (down to 83K).

There are two pieces remaining before I can nuke PreprocessRMW:
1. I xfailed a test because we're now producing worse code in a 
   case that has nothing to do with the change: it turns out that
   our use of MorphNodeTo will leave dead nodes in the graph
   which (depending on how the graph is walked) end up causing
   bogus uses of chains and blocking matches.  This is really 
   bad for other reasons, so I'll fix this in a follow-up patch.

2. CheckFoldableChainNode needs to be improved to handle the TF.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97539 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 02:22:10 +00:00
Dan Gohman
5b870aff81 Fix several places to handle vector operands properly.
Based on a patch by Micah Villmow for PR6438.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97538 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 02:14:38 +00:00
Dan Gohman
069d6f3396 Non-affine post-inc SCEV expansions have more code which must be
emitted after the increment. Make sure the insert position
reflects this. This fixes PR6453.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97537 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 01:59:21 +00:00
Dan Gohman
a9445e11c5 Floating-point add, sub, and mul are now spelled fadd, fsub, and fmul,
respectively.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97531 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-02 01:11:08 +00:00
Chris Lattner
117ccb7e51 Fix PR2590 by making PatternSortingPredicate actually be
ordered correctly.  Previously it would get in trouble when
two patterns were too similar and give them nondet ordering.
We force this by using the record ID order as a fallback.

The testsuite diff is due to alpha patterns being ordered
slightly differently, the change is a semantic noop afaict:

< 	lda $0,-100($16)
---
> 	subq $16,100,$0



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97509 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 22:09:11 +00:00
Devang Patel
09a695e396 Remove tests that checks @llvm.dbg.stoppoint handling.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97493 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 20:33:48 +00:00
Chris Lattner
f09999e103 stop using anders-aa
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97492 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 20:24:50 +00:00
Chris Lattner
9e5cc28f72 stop using anders-aa
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97491 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 20:24:05 +00:00
Chris Lattner
69ece93669 remove andersen's tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97490 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 20:23:15 +00:00
Devang Patel
929bdfedb8 @llvm.dbg.stoppoint intrinsic is not used anymore.
Delete dead testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97489 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 19:46:08 +00:00
Devang Patel
9ce6cb8865 Update to use new debug info encoding scheme. As a bonus, now the test passes!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97487 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 19:41:26 +00:00
Devang Patel
39ca4ea01a Remove this test because it checks wheter optimizer handled @llvm.dbg.global_variable appropriately or not. LLVM does not use this scheme to encode debug info for global variables any more.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97480 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 19:14:25 +00:00
Devang Patel
4a76d17d13 Remove test to check bugfix in handing debug info for global variables using intrinsics. Now, debug info for global variable is encoded using metadata. The old code path is now history and there is no need to have a test to check a bug fix in old code path.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97477 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 19:09:55 +00:00
Devang Patel
fc242bfac4 Remove dead test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97474 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 19:04:23 +00:00
Devang Patel
1e19cf635d Replace test case that uses @llvm.dbg.* intrinsic with a test that uses metadata.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97473 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 19:02:51 +00:00
Devang Patel
d1f94e90fd These two tests check whether oprimizer safely ignores @llvm.dbg.stoppoint intrinsic or not. This intrinsic is not used anymore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97468 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 18:45:28 +00:00
Devang Patel
81607c902f This test checks whether LICM ignores @llvm.dbg.stoppoint intrinsics appropriately or not. Now, llvm does not use this intrinsic. Remove this test.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97466 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 18:32:27 +00:00
Devang Patel
2cbb94d535 Rewrite test to test VLA using new debug info encoding scheme.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97465 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 18:30:58 +00:00
Devang Patel
0e7d26c200 Remove this generic debug info intrinsic test. LLVM does not use this llvm.dbg.stoppoint intrinsic anymore. There are tests to check new implementation, which attaches location information directly with an instruction using metadata.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97464 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 18:30:08 +00:00
Dan Gohman
3a9fd8064a LLVM instruction syntax doesn't have trailing semicolons.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97456 91177308-0d34-0410-b5e6-96231b3b80d8
2010-03-01 17:53:15 +00:00
Erick Tryzelaar
b65c5f2ec3 Add support getting the operands of a User to ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97414 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 20:45:03 +00:00
Erick Tryzelaar
6ba5c56cf5 Add support for global aliases to ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97413 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 20:44:58 +00:00
Erick Tryzelaar
ce89b4e66f Add support for inserting inline asm to ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97412 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 20:44:53 +00:00
Chris Lattner
f70cbb2d6a add some random nounwinds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97411 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 20:36:49 +00:00
Erick Tryzelaar
5b0a7741ad Add support for getting a null pointer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97380 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 09:46:27 +00:00
Erick Tryzelaar
d80ce75687 Add a way to look up a type by it's name in a module.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97379 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 09:46:21 +00:00
Erick Tryzelaar
8e130b1d0d Add support for global variables in an address space for llvm-c and ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97377 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 09:46:13 +00:00
Erick Tryzelaar
c59286bff1 Add indirect br support to llvm-c and ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97376 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 09:46:06 +00:00
Erick Tryzelaar
46c80e0c56 Add metadata functions to llvm-c and ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97375 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 09:45:59 +00:00
Erick Tryzelaar
19f047f5f6 Add the new builder arthmetic instructions to llvm-c and ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97372 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 05:51:43 +00:00
Erick Tryzelaar
1940dd10dd Add the new union arthmetic instructions to llvm-c and ocaml.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97371 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 05:51:33 +00:00
Erick Tryzelaar
6e2ee569c5 Rename ocaml vmcore tests to make it easier to insert tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97369 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 05:51:21 +00:00
Erick Tryzelaar
d2b4aff4bc Remove malloc and free from the ocaml bindings.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97367 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 05:51:09 +00:00
John McCall
e12b73816b Teach APFloat how to create both QNaNs and SNaNs and with arbitrary-width
payloads.  APFloat's internal folding routines always make QNaNs now,
instead of sometimes making QNaNs and sometimes SNaNs depending on the
type.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97364 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 02:51:25 +00:00
Dan Gohman
6ac33b4533 Don't try to replace physical registers when doing CSE.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97360 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-28 01:33:43 +00:00
Dan Gohman
53a50e2546 Add nounwinds.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97349 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-27 23:53:53 +00:00
Evan Cheng
2c755ba12a Re-apply 97040 with fix. This survives a ppc self-host llvm-gcc bootstrap.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97310 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-27 07:36:59 +00:00
Chris Lattner
d38cdb020e fix PR6414, a nondeterminism issue in IPSCCP which was because
of a subtle interation in a loop operating in densemap order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97288 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-27 00:07:42 +00:00
Jakob Stoklund Olesen
243296690e Use the right floating point load/store instructions in PPCInstrInfo::foldMemoryOperandImpl().
The PowerPC floating point registers can represent both f32 and f64 via the
two register classes F4RC and F8RC. F8RC is considered a subclass of F4RC to
allow cross-class coalescing. This coalescing only affects whether registers
are spilled as f32 or f64.

Spill slots must be accessed with load/store instructions corresponding to the
class of the spilled register. PPCInstrInfo::foldMemoryOperandImpl was looking
at the instruction opcode which is wrong.

X86 has similar floating point register classes, but doesn't try to fold
memory operands, so there is no problem there.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97262 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26 21:09:24 +00:00
Chris Lattner
3f5e0b8114 fix PR6435 another bug from the MallocInst elimination work.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97231 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26 18:23:13 +00:00
Sanjiv Gupta
2b0070211e Reapply things reverted back in 97220, with the fixed test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97228 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26 17:59:28 +00:00
Richard Osborne
d712783492 Fix XCoreTargetLowering::isLegalAddressingMode() to handle VoidTy.
Previously LoopStrengthReduce would sometimes be unable to find
a legal formula, causing an assertion failure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97226 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26 16:44:51 +00:00
Chris Lattner
5478b6b6f6 this file lacks a run line!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97208 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-26 02:40:57 +00:00
Chris Lattner
a687465bae rewrite OptimizeGlobalAddressOfMalloc to fix PR6422, some bugs
introduced when mallocinst was eliminated. 


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97178 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 22:33:52 +00:00
Daniel Dunbar
55983f1ca5 tests: Propogate the HOME environment variable through to tests. I'm ambivalent
about this, but it can be useful for users who use ccache, since the LLVMC tests
are fond of calling gcc.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97171 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 22:09:09 +00:00
Chris Lattner
d6c84720df change the scope node to include a list of children to be checked
instead of to have a chained series of scope nodes.  This makes
the generated table smaller, improves the efficiency of the
interpreter, and make the factoring optimization much more 
reasonable to implement.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97160 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 19:00:39 +00:00
Kevin Enderby
d74acb0c78 This is a patch to the assembler frontend to detect when aligning a text
section with TextAlignFillValue and calls EmitCodeAlignment() instead of
calling EmitValueToAlignment().  This allows x86 assembly code to be aligned
with optimal nops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97158 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 18:46:04 +00:00
Dan Gohman
9ee0d8a917 Teach the constant folder about union types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97142 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 16:45:19 +00:00
Dan Gohman
aa9d854b33 Revert r97064. Duncan pointed out that bitcasts are defined in
terms of store and load, which means bitcasting between scalar
integer and vector has endian-specific results, which undermines
this whole approach.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97137 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 15:20:39 +00:00
Dan Gohman
8566963713 Make LoopSimplify change conditional branches in loop exiting blocks
which branch on undef to branch on a boolean constant for the edge
exiting the loop. This helps ScalarEvolution compute trip counts for
loops.

Teach ScalarEvolution to recognize single-value PHIs, when safe, and
ForgetSymbolicName to forget such single-value PHI nodes as apprpriate
in ForgetSymbolicName.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97126 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 06:57:05 +00:00
Jeffrey Yasskin
c90171961d Try r96559 for the third time. This time the shared library is only built if
--enable-shared is passed to configure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97119 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-25 06:34:33 +00:00
Jakob Stoklund Olesen
657baec0af Create a stack frame on ARM when
- Function uses all scratch registers AND
- Function does not use any callee saved registers AND
- Stack size is too big to address with immediate offsets.

In this case a register must be scavenged to calculate the address of a stack
object, and the scavenger needs a spare register or emergency spill slot.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97071 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 22:43:17 +00:00
Bob Wilson
e742bb53a3 Check for comparisons of +/- zero when optimizing less-than-or-equal and
greater-than-or-equal SELECT_CCs to NEON vmin/vmax instructions.  This is
only allowed when UnsafeFPMath is set or when at least one of the operands
is known to be nonzero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97065 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 22:15:53 +00:00
Dan Gohman
c382bc3c0f Make getTypeSizeInBits work correctly for array types; it should return
the number of value bits, not the number of bits of allocation for in-memory
storage.

Make getTypeStoreSize and getTypeAllocSize work consistently for arrays and
vectors.

Fix several places in CodeGen which compute offsets into in-memory vectors
to use TargetData information.

This fixes PR1784.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97064 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 22:05:23 +00:00
Daniel Dunbar
cfe30effbb Speculatively revert r97011, "Re-apply 96540 and 96556 with fixes.", again in
the hopes of fixing PPC bootstrap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97040 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 17:05:47 +00:00
Dan Gohman
e832693acb When forming SSE min and max nodes for UGE and ULE comparisons, it's
necessary to swap the operands to handle NaN and negative zero properly.

Also, reintroduce logic for checking for NaN conditions when forming
SSE min and max instructions, fixed to take into consideration NaNs and
negative zeros. This allows forming min and max instructions in more
cases.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97025 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 06:52:40 +00:00
Chris Lattner
736a6ea3a2 Change the scheduler from adding nodes in allnodes order
to adding them in a determinstic order (bottom up from 
the root) based on the structure of the graph itself.

This updates tests for some random changes, interesting
bits: CodeGen/Blackfin/promote-logic.ll no longer crashes.
I have no idea why, but that's good right?

CodeGen/X86/2009-07-16-LoadFoldingBug.ll also fails, but
now compiles to have one fewer constant pool entry, making
the expected load that was being folded disappear.  Since it
is an unreduced mass of gnast, I just removed it.

This fixes PR6370


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97023 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 06:11:37 +00:00
Jim Grosbach
f9a4b7653d LowerCall() should always do getCopyFromReg() to reference the stack pointer.
Machine instruction selection is much happier when operands are in virtual
registers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97012 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 01:43:03 +00:00
Evan Cheng
97e6b8390b Re-apply 96540 and 96556 with fixes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97011 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 01:42:31 +00:00
Jakob Stoklund Olesen
c3027f769a DIV8r must define %AX since X86DAGToDAGISel::Select() sometimes uses it
instead of %AL/%AH.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97006 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-24 00:39:35 +00:00
Jakob Stoklund Olesen
450986db96 Remember to handle sub-registers when moving imp-defs to a rematted instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96995 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 22:44:02 +00:00
Jakob Stoklund Olesen
dcfe5f30b5 Keep track of phi join registers explicitly in LiveVariables.
Previously, LiveIntervalAnalysis would infer phi joins by looking for multiply
defined registers. That doesn't work if the phi join is implicitly defined in
all but one of the predecessors.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96994 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 22:43:58 +00:00
Jeffrey Yasskin
407fbdd161 Roll back r96959 again.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96981 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 20:53:37 +00:00
Devang Patel
df0732de65 new test case for r96974.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96975 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 19:37:40 +00:00
Wesley Peck
a70f28ce7d Adding the MicroBlaze backend.
The MicroBlaze is a highly configurable 32-bit soft-microprocessor for
use on Xilinx FPGAs. For more information see:
http://www.xilinx.com/tools/microblaze.htm
http://en.wikipedia.org/wiki/MicroBlaze

The current LLVM MicroBlaze backend generates assembly which can be
compiled using the an appropriate binutils assembler.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96969 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 19:15:24 +00:00
Jeffrey Yasskin
ea6c39d417 Roll r96559 forward again, adding libLLVM-2.7svn.so to LLVM. This links 3 of
the examples shared to make sure the shared library keeps working.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@96959 91177308-0d34-0410-b5e6-96231b3b80d8
2010-02-23 18:10:07 +00:00