Commit Graph

60573 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen
a50fba933c Remove preexisting kill flags in RegAllocLocal, just like LiveVariables does.
This should make it possible to start producing kill flags in isel without
breaking stuff.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102976 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 23:49:20 +00:00
Dan Gohman
1fdc614bee Factor out FastISel's code for materializing constants and other values
in registers into a separate function to de-couple it from the
top-down-specific logic in getRegForValue.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102975 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 23:36:34 +00:00
Dale Johannesen
08673d2950 Implement builtin_return_address(x) and builtin_frame_address(x)
on PPC for x!=0.  7624113.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102972 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 22:59:34 +00:00
Dan Gohman
1eaac53261 Remove the API compatibility layer which converted add, sub, and mul
to fadd, fsub, and fmul, when used with a floating-point type. LLVM
has supported the new instructions since 2.6, so it's time to get
on board.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102971 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 22:44:19 +00:00
Jakob Stoklund Olesen
b98c549d13 Check that subregisters don't have independent values in RemoveCopyByCommutingDef().
This fixes PR6941.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102970 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 22:40:32 +00:00
Dan Gohman
d4d01154ef Fix tests to use fadd, fsub, and fmul, instead of add, sub, and mul,
when the type is floating-point.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102969 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 22:36:46 +00:00
Eric Christopher
b4c14aaa50 Reword a comment slightly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102966 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 22:18:49 +00:00
Dan Gohman
deff621abd Use getConstant instead of getIntegerSCEV. The two are basically the
same, now that getConstant has overloads consistent with ConstantInt::get.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102965 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 22:09:21 +00:00
Bill Wendling
cec9c50924 Revert r102948.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102964 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 21:51:21 +00:00
Bob Wilson
857a894781 Remove special case for llvmCore_Embedded project. This is no longer needed
since llvmCore is built as part of llvmgcc42 now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102962 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 21:41:24 +00:00
Bob Wilson
ad98f795d0 Print basic block numbers in live interval debug output. Since the rest of the
debug output is showing machine instructions, the IR-level basic block names
aren't very meaningful, and because multiple machine basic blocks may be
derived from one IR-level BB, they're also not unique.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102960 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 21:38:11 +00:00
Nick Lewycky
a75586f37e Fix function prototype mismatch in LLVMUnionType(). Fixes PR7019.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102959 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 21:36:51 +00:00
Kevin Enderby
9d0838fba8 Changed llvm-mc to use the same suffixes with floating point compare
instructions as the Mac OS X darwin assembler.  Some of which like 'fcoml'
assembled to different opcodes.  While some of the suffixes were just different.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102958 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 21:31:40 +00:00
Kevin Enderby
eb612347f4 Fixed the encoding of two of the X86 movq instuctions. The Move quadword from
mm to mm/m64 and the Move quadword from xmm2/mem64 to xmm1 had the incorrect
encodings.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102952 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 21:03:31 +00:00
Kevin Enderby
3c979b06c0 Fixed the encoding of the x86 push instructions. Using a 32-bit immediate value
caused the a pushl instruction to be incorrectly encoding using only two bytes
of immediate, causing the following 2 instruction bytes to be part of the 32-bit
immediate value.  Also fixed the one byte form of push to be used when the
immediate would fit in a signed extended byte.  Lastly changed the names to not
include the 32 of PUSH32 since they actually push the size of the stack pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102951 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 20:45:05 +00:00
Bill Wendling
5f84c0293f Testcase for r102947.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102948 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 20:39:35 +00:00
Dan Gohman
f16c6803d7 Silence warnings about -1 being converted to an unsigned value.
Also, pass true for isSigned even when creating constants for unsigned
comparisons, because the point is to create an all-ones constant,
rather than UINT64_MAX, even for integers wider than 64 bits.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102946 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 20:23:47 +00:00
Eric Christopher
0b12348ddf Add an option, defaulting to off, to disable the sse domain crossing opts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102941 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 19:54:02 +00:00
Devang Patel
86b6f80a4c Check for side effects before splitting loop.
Patch by Jakub Staszak!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102928 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 18:06:58 +00:00
Dan Gohman
34c3e36e63 Use isTrueWhenEqual and isFalseWhenEqual instead of assuming that
SimplifyICmpOperands will simplify such cases to EQ or NE. This makes
the correcntess of the code independent on SimplifyICmpOperands doing
certain simplifications.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102927 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 18:00:24 +00:00
Dan Gohman
a189bae771 In ScalarEvolution::print, don't bother printing out the SCEVs for
comparison instructions, since they aren't interesting, despite having
integer result types.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102925 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 17:03:23 +00:00
Dan Gohman
3abb69c07f In SimplifyICmpOperands, avoid needlessly swapping the operands in the
case where both are addrecs in unrelated loops.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102924 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 17:00:11 +00:00
Dan Gohman
03557dc0ad Factor out the new <= and >= analysis code into SimplifyICmpOperands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102922 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 16:35:17 +00:00
Dan Gohman
7c24ff12c4 Update this comment to note its relationship with the "happens-before"
concept in the proposed memory model changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102911 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 14:59:34 +00:00
Dan Gohman
45baf4191b Delete this comment. The behavior of struct loads and stores with
respect to padding bytes isn't something that the dependence text
needs to spell out.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102910 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 14:58:14 +00:00
Dan Gohman
b532816ac9 Describe invoke instruction dependencies. Generalize the text for
terminator instructions so that it applies to all terminators with
multiple successors, including invoke.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102909 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 14:55:22 +00:00
Dan Gohman
855abed3cb Say "operations" instead of "instructions", as nsw can be applied to
constant expressions as well as instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102908 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 14:51:43 +00:00
Dan Gohman
30fc5bbfd1 Fix a bug which prevented tail merging of return instructions in
beneficial cases. See the changes in test/CodeGen/X86/tail-opts.ll and
test/CodeGen/ARM/ifcvt2.ll for details.

The fix is to change HashEndOfMBB to hash at most one instruction,
instead of trying to apply heuristics about when it will be profitable to
consider more than one instruction. The regular tail-merging heuristics
are already prepared to handle the same cases, and they're more precise.

Also, make test/CodeGen/ARM/ifcvt5.ll and
test/CodeGen/Thumb2/thumb2-branch.ll slightly more complex so that they
continue to test what they're intended to test.

And, this eliminates the problem in
test/CodeGen/Thumb2/2009-10-15-ITBlockBranch.ll, the testcase from
PR5204. Update it accordingly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102907 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 14:35:47 +00:00
Dan Gohman
3a2a4846a6 Add a README entry.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102906 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-03 14:31:00 +00:00
Duncan Sands
57b6e9eb6c Remove the -enable-sjlj-eh option, which doesn't do anything.
Remove the -enable-eh option which is only used by the JIT,
and replace it with -jit-enable-eh.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102865 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-02 15:36:26 +00:00
Chris Lattner
241d3fea7a fix some inconsistent line endings, patch by Jakub Staszak!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102852 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 17:36:49 +00:00
Chris Lattner
83f66fe614 revert r102831. We already delete dead readonly calls in
other places, killing a valid transformation is not the right
answer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102850 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 17:19:38 +00:00
Dale Johannesen
d014761c93 Don't count debug info as instructions. This was
preventing the emission of the NOP on Darwin for a
function with no actual code.  From timberwolfmc
with TEST=optllcdbg.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102843 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 16:41:11 +00:00
David Chisnall
752e259058 Added a variant of InlineCostAnalyzer::getInlineCost() that takes the called function as an explicit argument, for use when inlining function pointers.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102841 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 15:47:41 +00:00
Anton Korobeynikov
17458a786e Insert ANY_EXTEND node instead of invalid truncate during DAG Combining (X & 1),
when needed. This fixes PR7001

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102838 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 12:52:34 +00:00
Anton Korobeynikov
1b17614a72 Do folding for indirect branches, where possible
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102836 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 12:28:21 +00:00
Anton Korobeynikov
69d5b48bc3 Implement indirect branches on MSP430
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102835 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 12:04:32 +00:00
Anton Korobeynikov
650a8e49f9 Long branch target oparands are not pc-rel.
This should fix PR6603.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102834 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 12:04:22 +00:00
Owen Anderson
1b4a38646f Disable the call-deletion transformation introduced in r86975. Without
halting analysis, it is illegal to delete a call to a read-only function.
The correct solution is almost certainly to add a "must halt" attribute and
only allow deletions in its presence.

XFAIL the relevant testcase for now.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102831 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 08:34:28 +00:00
Chris Lattner
bccb41afc8 fix PR5009 by making CGSCCPM realize that a call was devirtualized
if an indirect call site was removed and a direct one was added, not
just if an indirect call site was modified to be direct.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102830 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 06:38:43 +00:00
Chris Lattner
1951e108be rename test
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102829 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 06:34:13 +00:00
Dan Gohman
d725f04ff8 Remove the code for special-casing byval for fast-isel. SelectionDAG
handles argument lowering anyway, so there's no need for special
casing here.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102828 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 02:44:23 +00:00
Dan Gohman
4781e30b7b Fix an ancient FIXME.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102827 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 02:43:10 +00:00
Dan Gohman
0b7afeb440 Re-disable kill flags, as there is more trouble.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102826 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 01:57:56 +00:00
Chris Lattner
0ca2f28458 rename InlineInfo.DevirtualizedCalls -> InlinedCalls to
reflect that it includes all inlined calls now, not just
devirtualized ones.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102824 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 01:26:13 +00:00
Chris Lattner
6da12e6767 Implement rdar://6295824 and PR6724 with two tiny changes
that can have a big effect :).  The first is to enable the
iterative SCC passmanager juice that kicks in when the
scc passmgr detects that a function pass has devirtualized
a call.  In this case, it will rerun all the passes it 
manages on the SCC, up to the iteration count limit (4). This
is useful because a function pass may devirualize a call, and
we want the inliner to inline it, or pruneeh to infer stuff
about it, etc.

The second patch is to add *all* call sites to the 
DevirtualizedCalls list the inliner uses.  This list is
about to get renamed, but the jist of this is that the 
inliner now reconsiders *all* inlined call sites as candidates
for further inlining.  The intuition is this that in cases 
like this:

f() { g(1); }     g(int x) { h(x); }

We analyze this bottom up, and may decide that it isn't 
profitable to inline H into G.  Next step, we decide that it is
profitable to inline G into F, and do so, which means that F 
now calls H.  Even though the call from G -> H may not have been
profitable to inline, the call from F -> H may be (in this case
because a constant allows folding etc).

In my spot checks, this doesn't have a big impact on code.  For
example, the LLC output for 252.eon grew from 0.02% (from
317252 to 317308) and 176.gcc actually shrunk by .3% (from 1525612
to 1520964 bytes).  252.eon never iterated in the SCC Passmgr,
176.gcc iterated at most 1 time.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102823 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 01:15:56 +00:00
Chris Lattner
159528702a The inliner has traditionally not considered call sites
that appear due to inlining a callee as candidates for
futher inlining, but a recent patch made it do this if
those call sites were indirect and became direct.

Unfortunately, in bizarre cases (see testcase) doing this
can cause us to infinitely inline mutually recursive
functions into callers not in the cycle.  Fix this by
keeping track of the inline history from which callsite
inline candidates got inlined from.

This shouldn't affect any "real world" code, but is required
for a follow on patch that is coming up next.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102822 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 01:05:10 +00:00
Dan Gohman
3a401bcd04 Re-enable kill flags from SelectionDAGISel, with a fix: don't
try to put a kill flag on a DBG_INFO instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102820 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 00:50:53 +00:00
Dale Johannesen
e576f51e66 Fix a bug where debug info affected stack slot coloring.
Seen in SingleSrc/Benchmarks/Misc/flops with TEST=optllcdbg.
7929951.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102819 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 00:41:15 +00:00
Dan Gohman
1b79a2ff54 Fix whitespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102817 91177308-0d34-0410-b5e6-96231b3b80d8
2010-05-01 00:33:28 +00:00