Dan Gohman
5c4413120f
Rename MVT::getVectorBaseType to MVT::getVectorElementType.
...
llvm-svn: 37579
2007-06-14 22:58:02 +00:00
Evan Cheng
e08f0eefa6
Fix typo.
...
llvm-svn: 37577
2007-06-14 21:26:08 +00:00
Dan Gohman
4a4a8eb00e
Add a target hook to allow loads from constant pools to be rematerialized, and an
...
implementation for x86.
llvm-svn: 37576
2007-06-14 20:50:44 +00:00
Evan Cheng
1e6f08b2a2
Fix some stupid bugs that have effectively disabled if-conversion.
...
llvm-svn: 37575
2007-06-14 20:28:52 +00:00
Duncan Sands
7413736a7e
Only correctly lower exception handing intrinsics if exception handling is
...
turned on. Likewise for scanning of invokes to mark landing pads.
llvm-svn: 37570
2007-06-13 16:53:21 +00:00
Dan Gohman
26455c4ae0
Introduce new SelectionDAG node opcodes VEXTRACT_SUBVECTOR and
...
VCONCAT_VECTORS. Use these for CopyToReg and CopyFromReg legalizing in
the case that the full register is to be split into subvectors instead
of scalars. This replaces uses of VBIT_CONVERT to present values as
vector-of-vector types in order to make whole subvectors accessible via
BUILD_VECTOR and EXTRACT_VECTOR_ELT.
This is in preparation for adding extended ValueType values, where
having vector-of-vector types is undesirable.
llvm-svn: 37569
2007-06-13 15:12:02 +00:00
Dan Gohman
cbd51c8b60
When creating CopyFromReg nodes, always use legal types. And use the
...
correct types for the result vector, even though it is currently bitcasted
to a different type immediately.
llvm-svn: 37568
2007-06-13 14:55:16 +00:00
Duncan Sands
97f7236e70
The fix that was applied for PR1224 stops the compiler
...
crashing but breaks exception handling. The problem
described in PR1224 is that invoke is a terminator that
can produce a value. The value may be needed in other
blocks. The code that writes to registers values needed
in other blocks runs before terminators are lowered (in
this case invoke) so asserted because the value was not
yet available. The fix that was applied was to do invoke
lowering earlier, before writing values to registers.
The problem this causes is that the code to copy values
to registers can be output after the invoke call. If
an exception is raised and control is passed to the
landing pad then this copy-code will never execute. If
the value is needed in some code path reached via the
landing pad then that code will get something bogus.
So revert the original fix and simply skip invoke values
in the general copying to registers code. Instead copy
the invoke value to a register in the invoke lowering code.
llvm-svn: 37567
2007-06-13 05:51:31 +00:00
Evan Cheng
cbaaff58bf
Typo
...
llvm-svn: 37566
2007-06-13 00:04:00 +00:00
Evan Cheng
9acfa7b063
Now if-converting all 4 variants of triangles.
...
llvm-svn: 37565
2007-06-12 23:54:05 +00:00
Lauro Ramos Venancio
4c2f003971
Fix a typo in bswap lowering.
...
llvm-svn: 37544
2007-06-11 23:16:16 +00:00
Evan Cheng
4dd31a7b1b
Restructure code to reduce ifcvt compile time cost.
...
llvm-svn: 37543
2007-06-11 22:26:22 +00:00
Reid Spencer
14b62a553e
Fix the build.
...
llvm-svn: 37537
2007-06-10 00:19:17 +00:00
Evan Cheng
2117d1f20e
Don't change CFG during analysis stage. Do so during ifcvt and invalidate predecessors accordingly.
...
llvm-svn: 37531
2007-06-09 01:03:43 +00:00
Evan Cheng
288f1545a6
Carefully remove extraneous CFG edges after each ifcvt.
...
llvm-svn: 37529
2007-06-08 22:01:07 +00:00
Evan Cheng
df1a42935b
Correct transfer predicate information.
...
llvm-svn: 37524
2007-06-08 19:17:12 +00:00
Evan Cheng
e93ccc013f
Hidden options to help debugging ifcvt issues.
...
llvm-svn: 37523
2007-06-08 19:10:51 +00:00
David Greene
02f6e9b621
Factor live variable analysis so it does not do register coalescing
...
simultaneously. Move that pass to SimpleRegisterCoalescing.
This makes it easier to implement alternative register allocation and
coalescing strategies while maintaining reuse of the existing live
interval analysis.
llvm-svn: 37520
2007-06-08 17:18:56 +00:00
Evan Cheng
7783f82e21
Allow more cmp / bcc to be predicated; clean up triangle ifcvt checking code.
...
llvm-svn: 37518
2007-06-08 09:36:04 +00:00
Duncan Sands
dc8fc1550e
Use more realistically sized vectors. Reserve capacity if we know in advance
...
how much will be used.
llvm-svn: 37515
2007-06-08 08:59:11 +00:00
Dale Johannesen
86798e5e11
Make throttle a hidden parameter, per review.
...
llvm-svn: 37511
2007-06-08 01:08:52 +00:00
Dale Johannesen
52fcf022f7
Throttle tail merging; handling blocks with large numbers of predecessors
...
is too slow.
llvm-svn: 37509
2007-06-08 00:34:27 +00:00
Evan Cheng
1236ef7bcc
Only remove the edge from entry to false if false block is merged.
...
llvm-svn: 37503
2007-06-07 22:31:28 +00:00
Dale Johannesen
9a4d987a5f
Do not change the size of function arguments. PR 1489.
...
llvm-svn: 37496
2007-06-07 21:07:15 +00:00
Evan Cheng
d3f3f0adad
ifcvt a triangle: don't merge ifcvt block with rejoin block if it can fall through to it. If merged, the resulting block is not a candidate for iterative ifcvting since it contains both predicated and non-predicated code.
...
llvm-svn: 37487
2007-06-07 08:13:00 +00:00
Evan Cheng
be9859eea2
Lots of bug fixes. Now finally in a reasonable state.
...
llvm-svn: 37485
2007-06-07 02:12:15 +00:00
Owen Anderson
cfb6f40424
Quick patch to fix the build, based on what it appears Evan meant to write.
...
Evan, please check that this is in fact correct.
llvm-svn: 37471
2007-06-06 16:22:00 +00:00
Duncan Sands
29d1dc6f1a
Fold the exception actions table harder: if two typeid lists start the
...
same, only output one copy of the common part.
llvm-svn: 37470
2007-06-06 15:37:31 +00:00
Evan Cheng
9030b98aca
Lots of bug fixes.
...
llvm-svn: 37467
2007-06-06 10:16:17 +00:00
Duncan Sands
61166501a1
Additional fix for PR1422: make sure the landing pad label is placed in the
...
correct machine basic block - do not rely on the eh.exception intrinsic
being in the landing pad: the loop optimizers can move it out.
llvm-svn: 37463
2007-06-06 10:05:18 +00:00
Evan Cheng
e4ec918be0
If a unconditional branch is added to branch to the false path during ifcvt, the predicated block cannot be iteratively ifcvted.
...
llvm-svn: 37456
2007-06-06 02:08:52 +00:00
Evan Cheng
b30a89457c
Minor statistics counting bug.
...
llvm-svn: 37451
2007-06-06 01:12:44 +00:00
Evan Cheng
30565998bb
Fix a couple of typos and be smarter about order of blocks when ifcvt a diamond.
...
llvm-svn: 37449
2007-06-06 00:57:55 +00:00
Evan Cheng
7948422b78
Fix diamond shape ifcvt bugs.
...
llvm-svn: 37444
2007-06-05 23:46:14 +00:00
Evan Cheng
c1a0b8ce1d
ReplaceUsesOfBlockWith() can modify the predecessors list.
...
llvm-svn: 37441
2007-06-05 22:03:53 +00:00
Evan Cheng
3e5bf0827c
Do not ifcvt if either true / false path is a backedge. Not profitable in almost all cases.
...
llvm-svn: 37440
2007-06-05 20:38:42 +00:00
Evan Cheng
2c1acd6d9e
I had a senior moment.
...
llvm-svn: 37433
2007-06-05 07:05:25 +00:00
Evan Cheng
6e4babe8cc
If the predicated block requires an early exit, end the block there and add a unconditional branch to false block. AnalyzeBranch() does not understand early exits.
...
llvm-svn: 37430
2007-06-05 01:31:40 +00:00
Evan Cheng
17aad8164e
Fix some subtle bugs: bug during succeessor copying; incorrectly updating states of ifcvted blocks.
...
llvm-svn: 37429
2007-06-05 00:07:37 +00:00
Dale Johannesen
0558dda319
Tail merging wasn't working for predecessors of landing pads. PR 1496.
...
llvm-svn: 37427
2007-06-04 23:52:54 +00:00
Evan Cheng
53ce7de03b
Global ctors / dtors alignment shouldn't be hard-coded at 4. e.g. It could be 8 for 64-bit targets.
...
llvm-svn: 37421
2007-06-04 20:39:18 +00:00
Evan Cheng
91233153bf
Forgot to check for if iterator reached the end.
...
llvm-svn: 37420
2007-06-04 20:33:36 +00:00
Dan Gohman
b4c2690446
Pass the DAG to SDNode::dump to let it do more detailed dumps in some cases.
...
llvm-svn: 37413
2007-06-04 16:17:33 +00:00
Dan Gohman
92a7f3a65e
Resolve implicit alignment before computing the FoldingSet information so
...
that the CSE map always contains explicit alignment information. This allows
more loads to be CSE'd when there is a mix of explicit-alignment loads and
implicit-alignment loads.
Also, in SelectionDAG::FindModifiedNodeSlot, add the operands to the
FoldingSetNodeID before the load/store information instead of after, so
that it matches what is done elsewhere.
llvm-svn: 37411
2007-06-04 15:49:41 +00:00
Evan Cheng
312b723af2
Let IfConverter loose. Allow more aggressive subsumptions; reorder basic blocks to expose more ifcvt opportunities; code clean up and fixes.
...
llvm-svn: 37409
2007-06-04 06:47:22 +00:00
Evan Cheng
df75785594
Move ReplaceUsesOfBlockWith() out of BranchFolding into a MachineBasicBlock general facility.
...
llvm-svn: 37408
2007-06-04 06:44:01 +00:00
Duncan Sands
f708f73a1b
The semantics of invoke require that we always jump to the unwind block
...
(landing pad) when an exception unwinds through the call. This doesn't
quite match the way the dwarf unwinder works: by default it only jumps to
the landing pad if the catch or filter specification matches, and otherwise
it keeps on unwinding. There are two ways of specifying to the unwinder
that it should "always" (more on why there are quotes here later) jump to
the landing pad: follow the specification by a 0 typeid, or follow it by
the typeid for the NULL typeinfo. GCC does the first, and this patch makes
LLVM do the same as gcc. However there is a problem: the unwinder performs
optimizations based on C++ semantics (it only expects destructors to be
run if the 0 typeid fires - known as "cleanups"), meaning it assumes that no
exceptions will be raised and that the raised exception will be reraised
at the end of the cleanup code. So if someone writes their own LLVM code
using the exception intrinsics they will get a nasty surprise if they don't
follow these rules. The other possibility of using the typeid corresponding
to NULL (catch-all) causes the unwinder to make no assumptions, so this is
probably what we should use in the long-run. However since we are still
having trouble getting exception handling working properly, for the moment
it seems best to closely imitate GCC.
llvm-svn: 37399
2007-06-02 17:16:06 +00:00
Duncan Sands
c063f5f362
Integrate exception filter support and exception catch support. This
...
simplifies the code in DwarfWriter, allows for multiple filters and
makes it trivial to specify filters accompanied by cleanups or catch-all
specifications (see next patch). What a deal! Patch blessed by Anton.
llvm-svn: 37398
2007-06-02 16:53:42 +00:00
Zhou Sheng
0a0ae932ca
Make LowerCTPOP() support arbitrary bitwidth integer type.
...
llvm-svn: 37397
2007-06-02 04:10:33 +00:00
Dale Johannesen
6e7cdce773
Fix CorrectExtraCFGEdges to allow for multiple LandingPad targets.
...
llvm-svn: 37394
2007-06-02 00:08:15 +00:00
Dale Johannesen
9746e3a22b
Fancier algorithm in tail-merge comment implemented, so remove comment.
...
llvm-svn: 37393
2007-06-01 23:04:28 +00:00
Dale Johannesen
3c0a13762d
Implement smarter algorithm for choosing which blocks to tail-merge.
...
See test/CodeGen/X86/test-pic-jtbl.ll for a case where it works well;
shaves another 10K off our favorite benchmark. I was hesitant about
this because of compile speed, but seems to do OK on a bootstrap.
llvm-svn: 37392
2007-06-01 23:02:45 +00:00
Evan Cheng
4dcf1e8582
Correctly mark early-exit on the false path.
...
llvm-svn: 37387
2007-06-01 20:29:21 +00:00
Duncan Sands
706421e712
Since TypeInfos are passed as i8 pointers, a NULL TypeInfo should be passed
...
as a null i8 pointer not as a 0 i32.
llvm-svn: 37383
2007-06-01 08:18:30 +00:00
Evan Cheng
6a2cf070cc
Ifcvt triangle: don't ifcvt 'true' BB if it has other predecessors; don't merge 'false' BB if it has other predecessors.
...
llvm-svn: 37382
2007-06-01 07:41:07 +00:00
Evan Cheng
95c7917d92
Remove a bogus check. Even terminators in a ifcvt need to be predicated. Unconditional branches can usually be converted to conditional ones.
...
llvm-svn: 37380
2007-06-01 00:55:26 +00:00
Evan Cheng
20e05997f5
Allow multiple ifcvt candidates to share children blocks; add some debugging code.
...
llvm-svn: 37379
2007-06-01 00:12:12 +00:00
Dale Johannesen
1a401e68a8
Arrange for only 1 of multiple branches to landing pad to be kept.
...
Do not remove empty landing pads (EH table needs to be updated)
llvm-svn: 37375
2007-05-31 21:54:00 +00:00
Evan Cheng
e6ccb6c5ed
Fix a typo.
...
llvm-svn: 37374
2007-05-31 20:53:33 +00:00
Chris Lattner
3e3ff30aa2
Fix the asmprinter so that a globalvalue can specify an explicit alignment
...
smaller than the preferred alignment, but so that the target can actually
specify a minimum alignment if needed. This fixes some objc protocol
failures Devang tracked down.
llvm-svn: 37373
2007-05-31 18:57:45 +00:00
Lauro Ramos Venancio
5b0757a401
Fix PR1424.
...
When a function has FP, the register scavenging spill slot offset already
was calculated.
llvm-svn: 37371
2007-05-31 18:27:58 +00:00
Evan Cheng
905a8f4940
Change traversal order to bottom up in preparation for more aggressive if-conversion.
...
llvm-svn: 37365
2007-05-30 19:49:19 +00:00
Chris Lattner
397c4d9ef6
Fix CodeGen/PowerPC/2007-05-30-dagcombine-miscomp.ll, and PR1473.
...
llvm-svn: 37362
2007-05-30 16:30:06 +00:00
Dale Johannesen
d14ad078c6
Changed per review comment.
...
llvm-svn: 37355
2007-05-30 00:32:01 +00:00
Dale Johannesen
a69ebdbebc
Make stable_sort in tail merging actually be stable (it never was, but didn't
...
matter until my last change). Reenable tail merging by default.
llvm-svn: 37354
2007-05-29 23:47:50 +00:00
Evan Cheng
20f7d30f92
Don't merge in tail block of a diamond if it has more than one predecessors after if-conversion.
...
llvm-svn: 37353
2007-05-29 23:37:20 +00:00
Evan Cheng
c2237ce217
If there is an empty block between a source and its successor block, it still requires a unconditional branch.
...
llvm-svn: 37344
2007-05-29 22:31:16 +00:00
Evan Cheng
5983bdbb2c
Add missing const qualifiers.
...
llvm-svn: 37341
2007-05-29 18:35:22 +00:00
Zhou Sheng
d7dc1ed64c
Correct the logic in LowerPartSet which cleared the bits from 0 to low-1.
...
llvm-svn: 37331
2007-05-26 03:43:13 +00:00
Chris Lattner
4698083b96
tighten up recursion depth again
...
llvm-svn: 37330
2007-05-25 02:19:06 +00:00
Evan Cheng
13f5f7df95
Silly boog.
...
llvm-svn: 37328
2007-05-25 00:59:01 +00:00
Dale Johannesen
1409b6a59b
Blocks that cond-br and uncond-br/fallthrough to same block should have
...
only one successor.
llvm-svn: 37324
2007-05-24 18:31:55 +00:00
Dale Johannesen
1af8c870c7
Fix for PR1444: do not create two successors to the same block.
...
Temporarily, this breaks CodeGen/Generic/2006-02-12-InsertLibraryCall.ll
by exposing an unrelated latent problem; working on that.
llvm-svn: 37323
2007-05-24 17:39:32 +00:00
Dan Gohman
30978078bf
Minor comment cleanups.
...
llvm-svn: 37321
2007-05-24 14:36:04 +00:00
Dan Gohman
703e0f8608
Add explicit qualification for namespace MVT members.
...
llvm-svn: 37320
2007-05-24 14:33:05 +00:00
Evan Cheng
a4d187b8ce
Fix a typo that caused combiner to create mal-formed pre-indexed store where value store is the same as the base pointer.
...
llvm-svn: 37318
2007-05-24 02:35:39 +00:00
Dale Johannesen
f4a77d2481
Two tail merging improvements:
...
When considering blocks with more than 2 predecessors, merge the block with
the largest number of matching insns, rather than the first block found.
Considering that 1 matching insn is enough to show a win for candidates that
already end with a branch.
llvm-svn: 37315
2007-05-23 21:07:20 +00:00
Anton Korobeynikov
3b327826db
Mark all calls as "could throw", when exceptions are enabled. Emit necessary LP info too. This fixes PR1439
...
llvm-svn: 37311
2007-05-23 11:08:31 +00:00
Chris Lattner
6509c0673f
prevent exponential recursion in isNegatibleForFree
...
llvm-svn: 37310
2007-05-23 07:35:22 +00:00
Evan Cheng
d0e669199b
Preliminary iterative if-conversion support.
...
llvm-svn: 37309
2007-05-23 07:23:16 +00:00
Dale Johannesen
f9cbdc676c
name change requested by review of previous patch
...
llvm-svn: 37289
2007-05-22 18:31:04 +00:00
Owen Anderson
0ae7eb5e7c
Silence a warning.
...
llvm-svn: 37288
2007-05-22 18:13:40 +00:00
Dale Johannesen
82810c8a13
Make tail merging the default, except on powerPC. There was no prior art
...
for a target-dependent default with a command-line override; this way
should be generally usable.
llvm-svn: 37285
2007-05-22 17:14:46 +00:00
Evan Cheng
e26c0916a3
If-convert early exit blocks (returns, etc.); bug fixes, etc.
...
llvm-svn: 37270
2007-05-21 22:22:58 +00:00
Duncan Sands
34e82a4508
Only emit one entry in the exception action table for each action, even if
...
it occurs for multiple landing pads.
llvm-svn: 37267
2007-05-21 18:50:28 +00:00
Chris Lattner
1fa8276e70
same patch as the previous one, but the symmetric case
...
llvm-svn: 37249
2007-05-19 00:46:51 +00:00
Chris Lattner
b08cbbd737
Disable the (A == (B-A)) -> 2*A == B xform when the sub has multiple uses (in
...
this case, the xform introduces an extra operation). This compiles
PowerPC/compare-duplicate.ll into:
_test:
subf r2, r3, r4
cmplw cr0, r2, r3
bne cr0, LBB1_2 ;F
instead of:
_test:
slwi r2, r3, 1
subf r3, r3, r4
cmplw cr0, r4, r2
bne cr0, LBB1_2 ;F
This is target independent of course.
llvm-svn: 37246
2007-05-19 00:43:44 +00:00
Evan Cheng
018cffbca4
Clean up.
...
llvm-svn: 37237
2007-05-18 19:32:08 +00:00
Evan Cheng
faaf716540
Change to depth-first traversal.
...
llvm-svn: 37236
2007-05-18 19:26:33 +00:00
Dale Johannesen
dafda82755
Document an inefficiency in tail merging.
...
llvm-svn: 37235
2007-05-18 18:46:40 +00:00
Dan Gohman
b539df3389
Qualify calls to getTypeForValueType with MVT:: too.
...
llvm-svn: 37233
2007-05-18 18:41:29 +00:00
Evan Cheng
2e82cefd24
Some restructuring in preparation for most aggressive if-conversion.
...
llvm-svn: 37231
2007-05-18 18:14:37 +00:00
Dan Gohman
1796f1f8e9
Qualify several calls to functions in the MVT namespace, for consistency.
...
llvm-svn: 37230
2007-05-18 17:52:13 +00:00
Evan Cheng
f25d3a5d73
Watch out for blocks that end with a return.
...
llvm-svn: 37227
2007-05-18 17:06:53 +00:00
Evan Cheng
478b805956
If true / false blocks fallthrough before ifcvt, add unconditional branches to ifcvt'd block.
...
llvm-svn: 37200
2007-05-18 01:55:58 +00:00
Dale Johannesen
f8956178af
Remove some unneeded branches. (spotted by Evan, thanks)
...
llvm-svn: 37198
2007-05-18 01:28:58 +00:00
Evan Cheng
0f745da4fe
Make use of target specific block size limits; bug fixes.
...
llvm-svn: 37195
2007-05-18 00:20:58 +00:00
Evan Cheng
a92b2b38ff
Move isSuccessor() offline, change it to use std::find.
...
llvm-svn: 37190
2007-05-17 23:58:53 +00:00
Chris Lattner
0184f88deb
disable MaskedValueIsZero, ComputeMaskedBits, and SimplifyDemandedBits for
...
i128 integers. The 64-bit masks are not wide enough to represent the results.
These should be converted to APInt someday.
llvm-svn: 37169
2007-05-17 18:19:23 +00:00
Chris Lattner
2135bc08d6
add expand support for ADDC/SUBC/ADDE/SUBE so we can codegen 128-bit add/sub on 32-bit (or less) targets
...
llvm-svn: 37168
2007-05-17 18:15:41 +00:00
Evan Cheng
429178d727
Add target hook to specify block size limit for if-conversion.
...
llvm-svn: 37134
2007-05-16 23:45:53 +00:00
Dale Johannesen
7a6c175e7a
Don't fold bitconvert(load) for preinc/postdec loads. Likewise stores.
...
llvm-svn: 37130
2007-05-16 22:45:30 +00:00
Evan Cheng
af71610429
isBlockPredicable() always ignore terminal instructions; add comments.
...
llvm-svn: 37126
2007-05-16 21:54:37 +00:00
Evan Cheng
5ea933a009
Rename M_PREDICATED to M_PREDICABLE; Moved isPredicable() to MachineInstr.
...
llvm-svn: 37121
2007-05-16 20:56:08 +00:00
Duncan Sands
59ae77486c
Output exception call-sites in address order, as required by the unwinding
...
runtime.
llvm-svn: 37104
2007-05-16 12:12:23 +00:00
Chris Lattner
48fb92f75d
Use a ptr set instead of a linear search to unique TokenFactor operands.
...
This fixes PR1423
llvm-svn: 37102
2007-05-16 06:37:59 +00:00
Evan Cheng
35fc2119b0
Devang points out that we need an assertion here.
...
llvm-svn: 37097
2007-05-16 05:11:10 +00:00
Evan Cheng
288f133c71
Bug fix: should check ABI alignment, not pref. alignment.
...
llvm-svn: 37094
2007-05-16 02:04:50 +00:00
Evan Cheng
f5e53a58db
Initial commit of (very basic) if converter.
...
llvm-svn: 37092
2007-05-16 02:00:57 +00:00
Dale Johannesen
420a85d0cf
Remove extra CFG edges before doing these passes; it makes them happier.
...
llvm-svn: 37089
2007-05-15 21:19:17 +00:00
Lauro Ramos Venancio
3f142cbca2
Fix an infinite recursion in GetNegatedExpression.
...
llvm-svn: 37086
2007-05-15 17:05:43 +00:00
Duncan Sands
750e8c5d4d
The index into the actions table is a ULEB128 not a SLEB128.
...
llvm-svn: 37084
2007-05-15 13:54:14 +00:00
Reid Spencer
daed139420
Un-brain-dead-ify the lowering of part set for the reverse case.
...
llvm-svn: 37071
2007-05-15 02:26:52 +00:00
Chris Lattner
c7596efdad
Fix some subtle issues handling immediate values. This fixes
...
test/CodeGen/ARM/2007-05-14-InlineAsmCstCrash.ll
llvm-svn: 37069
2007-05-15 01:33:58 +00:00
Evan Cheng
4d728b0419
Added getNumExplicitOperands and findFirstPredOperand.
...
llvm-svn: 37064
2007-05-15 01:26:09 +00:00
Chris Lattner
e49c974a7c
implement a simple fneg optimization/propagation thing. This compiles:
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CodeGen/PowerPC/fneg.ll into:
_t4:
fmul f0, f3, f4
fmadd f1, f1, f2, f0
blr
instead of:
_t4:
fneg f0, f3
fmul f0, f0, f4
fmsub f1, f1, f2, f0
blr
llvm-svn: 37054
2007-05-14 22:04:50 +00:00
Evan Cheng
e1595b6859
Only worry about intervening kill if there are more than one live ranges in the interval.
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llvm-svn: 37052
2007-05-14 21:23:51 +00:00
Evan Cheng
c690cba7d9
Fix for PR1406:
...
v1 =
r2 = move v1
= op r2<kill>
...
r2 = move v1
= op r2<kill>
Clear the first r2 kill if v1 and r2 are joined.
llvm-svn: 37050
2007-05-14 21:10:05 +00:00
Evan Cheng
fc2377d4ed
When marking a register as being implicitly defined, make sure to clear its partial use info as well.
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llvm-svn: 37046
2007-05-14 20:39:18 +00:00
Reid Spencer
764ae2a21b
Give names to the final result values of the part_set computations. This
...
just aids in readability and debugability of the output. No functional change.
llvm-svn: 37037
2007-05-14 17:21:17 +00:00
Anton Korobeynikov
1ee0c8d563
Emit function debug frames in one atom. This will prevent us from generating incorrect assembler in case of both
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debug information & exception information presented.
llvm-svn: 37019
2007-05-13 17:30:11 +00:00
Anton Korobeynikov
bbaf55448b
Emit multiple common EH frames for multiple (including blank) personality
...
functions. This partly fixes PR1414: now we're restricted only to one
personality function per eh frame, not per module. Further work on
"multiple personalities" topic needs representative example.
llvm-svn: 37018
2007-05-13 15:42:26 +00:00
Anton Korobeynikov
13da17843c
More DWARF-related things cleanup:
...
1. Fix PR1380
2. Apply Duncan's patch from PR1410
3. Insert workaround for "one personality function per module" as noted in PR1414
4. Emit correct debug frames for x86/linux. This partly fixes DebugInfo/2006-11-06-StackTrace.cpp: stack trace is
shown correctly, but arguments for function on top of stack are displayed incorrectly.
llvm-svn: 37015
2007-05-12 22:36:25 +00:00
Reid Spencer
bf283708f7
Get the size of auto arrays right, regardless of its changing size.
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llvm-svn: 37006
2007-05-12 11:07:40 +00:00
Devang Patel
79a71ec3ad
Fix http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20070507/049516.html
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llvm-svn: 36998
2007-05-11 23:14:43 +00:00
Anton Korobeynikov
67286b1266
Perform correct actions numbers/sizes computation
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llvm-svn: 36988
2007-05-11 08:47:35 +00:00
Anton Korobeynikov
00d02442b0
Fix action No calculation in multiple-invoke-one-LP mode
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llvm-svn: 36987
2007-05-11 08:23:57 +00:00
Dale Johannesen
cc8f571bc8
Do not generate branches to entry block. This fixes several test suite
...
failures on PPC (can happen only when prologue code is null)
llvm-svn: 36979
2007-05-10 23:59:23 +00:00
Anton Korobeynikov
ee02c7d2fb
Ooops. Some debugging stuff :)
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llvm-svn: 36978
2007-05-10 22:38:46 +00:00
Anton Korobeynikov
96142de3f0
Allow multiple invokes per landing pad. This (probably) fixes PR1410.
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llvm-svn: 36977
2007-05-10 22:34:59 +00:00
Duncan Sands
b43fe52136
Later computations assume we are aligned at this point.
...
llvm-svn: 36975
2007-05-10 18:40:24 +00:00
Anton Korobeynikov
ed5dad4306
TypeIds are indexed by j, not i
...
llvm-svn: 36974
2007-05-10 15:10:34 +00:00
Dale Johannesen
6e16d09252
Make tail merging handle many more cases (all it can, I think).
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llvm-svn: 36966
2007-05-10 01:01:49 +00:00
Evan Cheng
f325c2a65e
Can't fold the bit_convert is the store is a truncating store.
...
llvm-svn: 36962
2007-05-09 21:49:47 +00:00
Anton Korobeynikov
192d09c2d9
Do not assert, when case range split metric is zero and JTs are not allowed: just emit binary tree in this case. This
...
fixes PR1403.
llvm-svn: 36959
2007-05-09 20:07:08 +00:00
Bill Wendling
31fd60ba0c
Change names from RA to something unique to get rid of naming conflicts with
...
certain linkers...
llvm-svn: 36944
2007-05-08 19:02:46 +00:00
Evan Cheng
9e17872c1d
Eliminate MarkVirtRegAliveInBlock recursion.
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llvm-svn: 36943
2007-05-08 19:00:00 +00:00
Evan Cheng
562e45692e
Forgot a check.
...
llvm-svn: 36910
2007-05-07 21:36:06 +00:00
Evan Cheng
a4cf58a103
Enable a couple of xforms:
...
- (store (bitconvert v)) -> (store v) if resultant store does not require
higher alignment
- (bitconvert (load v)) -> (load (bitconvert*)v) if resultant load does not
require higher alignment
llvm-svn: 36908
2007-05-07 21:27:48 +00:00
Dale Johannesen
9a25b3afcd
Handle some non-exit blocks in tail merging.
...
llvm-svn: 36907
2007-05-07 20:57:21 +00:00
Duncan Sands
671e8c4444
Parameter attributes on invoke calls were being lost due to the wrong
...
attribute index being used. Fix proposed by Anton Korobeynikov, who
asked me to implement and commit it for him. This is PR1398.
llvm-svn: 36906
2007-05-07 20:49:28 +00:00
Anton Korobeynikov
a8fd7fdc25
Detabify
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llvm-svn: 36891
2007-05-06 20:14:21 +00:00
Nick Lewycky
e7da2d6ac3
Fix typo in comment.
...
llvm-svn: 36873
2007-05-06 13:37:16 +00:00
Duncan Sands
00282a21a5
Use the personality function that was registered with MMI rather than
...
hardwiring in the C++ one.
llvm-svn: 36789
2007-05-05 20:27:00 +00:00
Chris Lattner
07e6f3257c
Propagate alignment/volatility in two places.
...
Implement support for expanding a bitcast from an illegal vector type to
a legal one (e.g. 4xi32 -> 4xf32 in SSE1). This fixes PR1371 and
CodeGen/X86/2007-05-05-VecCastExpand.ll
llvm-svn: 36787
2007-05-05 19:39:05 +00:00
Duncan Sands
02528f5425
Spelling fix.
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llvm-svn: 36781
2007-05-05 16:32:57 +00:00
Anton Korobeynikov
4db0090339
Emit sections/directives in the proper order. This fixes PR1376. Also,
...
some small cleanup was made.
llvm-svn: 36780
2007-05-05 09:04:50 +00:00
Duncan Sands
4cb9eb81ef
A bitcast of a global variable may have been constant folded to a GEP -
...
handle this case too.
llvm-svn: 36745
2007-05-04 17:12:26 +00:00
Evan Cheng
044a0a8cfb
Don't create indexed load / store with zero offset!
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llvm-svn: 36716
2007-05-03 23:52:19 +00:00
Chris Lattner
44a2ed66b1
Allow i/s to match (gv+c). This fixes CodeGen/PowerPC/2007-05-03-InlineAsm-S-Constraint.ll
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and PR1382
llvm-svn: 36672
2007-05-03 16:54:34 +00:00