Chris Lattner
512f74d445
improve debug output
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llvm-svn: 22638
2005-08-03 23:30:08 +00:00
Nate Begeman
6cd034da8e
Scalar SSE: load +0.0 -> xorps/xorpd
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Scalar SSE: a < b ? c : 0.0 -> cmpss, andps
Scalar SSE: float -> i16 needs to be promoted
llvm-svn: 22637
2005-08-03 23:26:28 +00:00
Chris Lattner
1dcd811d36
Move from Stage 0 to Stage 1.
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Only emit one PHI node for IV uses with identical bases and strides (after
moving foldable immediates to the load/store instruction).
This implements LoopStrengthReduce/dont_insert_redundant_ops.ll, allowing
us to generate this PPC code for test1:
or r30, r3, r3
.LBB_test1_1: ; Loop
li r2, 0
stw r2, 0(r30)
stw r2, 4(r30)
bl L_pred$stub
addi r30, r30, 8
cmplwi cr0, r3, 0
bne .LBB_test1_1 ; Loop
instead of this code:
or r30, r3, r3
or r29, r3, r3
.LBB_test1_1: ; Loop
li r2, 0
stw r2, 0(r29)
stw r2, 4(r30)
bl L_pred$stub
addi r30, r30, 8 ;; Two iv's with step of 8
addi r29, r29, 8
cmplwi cr0, r3, 0
bne .LBB_test1_1 ; Loop
llvm-svn: 22635
2005-08-03 22:51:21 +00:00
Andrew Lenharth
2865f0fe01
Alpha ABI specifies stack is always 16 byte alligned, and gcc does it, so I will too
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llvm-svn: 22634
2005-08-03 22:33:21 +00:00
Chris Lattner
96367799a2
Rename IVUse to IVUsersOfOneStride, use a struct instead of a pair to
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unify some parallel vectors and get field names more descriptive than
"first" and "second". This isn't lisp afterall :)
llvm-svn: 22633
2005-08-03 22:21:05 +00:00
Chris Lattner
230700ef26
Fix a nasty dangling pointer issue. The ScalarEvolution pass would keep a
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map from instruction* to SCEVHandles. When we delete instructions, we have
to tell it about it. We would run into nasty cases where new instructions
were reallocated at old instruction addresses and get the old map values.
Bad bad bad :(
llvm-svn: 22632
2005-08-03 21:36:09 +00:00
Chris Lattner
d124203207
Fix PR611, codegen'ing SREM of FP operands to fmod or fmodf instead of
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the sequence used for integer ops
llvm-svn: 22629
2005-08-03 20:31:37 +00:00
Chris Lattner
eee2daf85d
The correct fix for PR612, which also fixes
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Transforms/LowerInvoke/2005-08-03-InvokeWithPHIUse.ll
llvm-svn: 22628
2005-08-03 18:51:44 +00:00
Chris Lattner
edac412122
When inserting code, make sure not to insert it before PHI nodes. This
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fixes PR612 and Transforms/LowerInvoke/2005-08-03-InvokeWithPHI.ll
llvm-svn: 22626
2005-08-03 18:34:29 +00:00
Chris Lattner
3672ceb70b
Fix Transforms/SimplifyCFG/2005-08-03-PHIFactorCrash.ll, a problem that
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occurred while bugpointing another testcase
llvm-svn: 22621
2005-08-03 17:59:45 +00:00
Chris Lattner
62b0ecdfb8
add support for Graphviz when viewing CFGs
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llvm-svn: 22620
2005-08-03 17:55:05 +00:00
Misha Brukman
41a00bbfa6
Fix grammar: apostrophe-s ('s) is possessive, not plural; also iff vs. if.
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llvm-svn: 22619
2005-08-03 17:29:52 +00:00
Chris Lattner
adfe9f12ef
minor capitalization thing, patch by Jim Laskey
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llvm-svn: 22617
2005-08-03 16:52:22 +00:00
Chris Lattner
6e1d5a8b28
Finally, add the required constraint checks to fix Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
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the right way
llvm-svn: 22615
2005-08-03 00:59:12 +00:00
Chris Lattner
cbf4b650ba
Simplify some code, add the correct pred checks
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llvm-svn: 22613
2005-08-03 00:38:27 +00:00
Chris Lattner
c59014baef
Refactor code out of PropagatePredecessorsForPHIs, turning it into a pure function with no side-effects
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llvm-svn: 22612
2005-08-03 00:29:26 +00:00
Chris Lattner
0f4e0d19cc
use splice instead of remove/insert to avoid some symtab operations
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llvm-svn: 22611
2005-08-03 00:23:42 +00:00
Chris Lattner
adbd086f50
move two functions up in the file, use SafeToMergeTerminators to eliminate
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some duplicated code
llvm-svn: 22610
2005-08-03 00:19:45 +00:00
Chris Lattner
b9efb90e1a
Rip some code out of the main SimplifyCFG function into a subfunction and
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call it from the only place it is live. No functionality changes.
llvm-svn: 22609
2005-08-03 00:11:16 +00:00
Chris Lattner
df31d75597
Disable this patch:
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http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050801/027345.html
This breaks real programs and only fixes an obscure regression testcase. A
real fix is in development.
llvm-svn: 22606
2005-08-02 23:31:38 +00:00
Chris Lattner
b5906d5783
Change a place to use an arbitrary value instead of null, when possible
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llvm-svn: 22605
2005-08-02 23:29:23 +00:00
Chris Lattner
31a972dc23
one more hunk that got dropped
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llvm-svn: 22596
2005-08-02 19:35:29 +00:00
Chris Lattner
75a8a64de4
This hunk accidentally got dropped. Patch by Jim Laskey
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llvm-svn: 22595
2005-08-02 19:30:55 +00:00
Chris Lattner
cc8ae687e1
Update to use the new MathExtras.h support for log2 computation.
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Patch contributed by Jim Laskey!
llvm-svn: 22594
2005-08-02 19:26:06 +00:00
Chris Lattner
d59fba1bce
Update to use the new MathExtras.h support for log2 computation.
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Patch contributed by Jim Laskey!
llvm-svn: 22592
2005-08-02 19:16:58 +00:00
Chris Lattner
3a81e0795b
add a pass name to make debugging dumps nicer
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llvm-svn: 22588
2005-08-02 19:07:49 +00:00
Misha Brukman
eb3ceda067
Fix grammar: it's == "it is".
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llvm-svn: 22587
2005-08-02 16:04:59 +00:00
Chris Lattner
05431d5ca5
Like the comment says, do not insert cast instructions before phi nodes
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llvm-svn: 22586
2005-08-02 03:31:14 +00:00
Jeff Cohen
06094b5e91
It's dangerous coding on Mondays.
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llvm-svn: 22585
2005-08-02 03:26:32 +00:00
Chris Lattner
b8fd6a098e
This code was very close, but not quite right. It did not take into
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consideration the case where a reference in an unreachable block could
occur. This fixes Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll,
something I ran into while bugpoint'ing another pass.
llvm-svn: 22584
2005-08-02 03:24:05 +00:00
Jeff Cohen
82a6b596d0
Implement SetInterruptFunction for Windows.
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llvm-svn: 22582
2005-08-02 03:04:47 +00:00
Chris Lattner
4187b8bebe
add a comment, make a check more lenient
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llvm-svn: 22581
2005-08-02 02:52:02 +00:00
Chris Lattner
38b0e93bd4
Simplify for loop, clear a per-loop map after processing each loop
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llvm-svn: 22580
2005-08-02 02:44:31 +00:00
Chris Lattner
2ba2324c96
Implement sys::SetInterruptFunction on Unix, stub it on win32 so that the
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build will not fail
llvm-svn: 22578
2005-08-02 02:14:22 +00:00
Chris Lattner
954842274e
Add a comment
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Make LSR ignore GEP's that have loop variant base values, as we currently
cannot codegen them
llvm-svn: 22576
2005-08-02 01:32:29 +00:00
Chris Lattner
ec624cdcb5
Fix an iterator invalidation problem
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llvm-svn: 22575
2005-08-02 00:41:11 +00:00
Chris Lattner
d2455468b5
200.sixtrack prints FP numbers with a very strange notation that uses D
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instead of E for exponentials (e.g. 1.234D-43). Add support for this
notation.
llvm-svn: 22574
2005-08-02 00:11:53 +00:00
Andrew Lenharth
913742c65f
update function codes to reflect /su flags that have been added since this was written
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llvm-svn: 22571
2005-08-01 20:06:01 +00:00
Chris Lattner
83f0262a2c
Fix casts from long to sbyte on ppc
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llvm-svn: 22570
2005-08-01 18:16:37 +00:00
Andrew Lenharth
0d65956c61
use llabs not abs
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llvm-svn: 22569
2005-08-01 17:47:28 +00:00
Andrew Lenharth
a48ff3bd21
one cannot allocate a global, until one is done initializing the global pointers
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llvm-svn: 22568
2005-08-01 17:35:40 +00:00
Chris Lattner
8e9bc37bda
ConstantInt::get only works for arguments < 128.
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SimplifyLibCalls probably has to be audited to make sure it does not make
this mistake elsewhere. Also, if this code knows that the type will be
unsigned, obviously one arm of this is dead.
Reid, can you take a look into this further?
llvm-svn: 22566
2005-08-01 16:52:50 +00:00
Jeff Cohen
019104459d
Keep tabs and trailing spaces out.
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llvm-svn: 22565
2005-07-30 18:33:25 +00:00
Jeff Cohen
4f69b0d5cd
Fix VC++ build problems.
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llvm-svn: 22564
2005-07-30 18:22:27 +00:00
Chris Lattner
d742a80e9e
fix float->long conversions on x86
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llvm-svn: 22563
2005-07-30 01:40:57 +00:00
Chris Lattner
11be5c11d5
fix a typeo
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llvm-svn: 22561
2005-07-30 00:43:00 +00:00
Nate Begeman
13bd25dc1d
Ack, typo
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llvm-svn: 22560
2005-07-30 00:21:31 +00:00
Chris Lattner
a681fc64d6
Change the fp to integer code to not perform 2-byte stores followed by
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1 byte loads and other operations. This is bad for store-forwarding on
common CPUs. We now do this:
fnstcw WORD PTR [%ESP]
mov %AX, WORD PTR [%ESP]
instead of:
fnstcw WORD PTR [%ESP]
mov %AL, BYTE PTR [%ESP + 1]
llvm-svn: 22559
2005-07-30 00:17:52 +00:00
Nate Begeman
454caae5bd
Commit a new LoopStrengthReduce pass that can use scalar evolutions and
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target data to decide which loop induction variables to strength reduce
and how to do so. This work is mostly by Chris Lattner, with tweaks by
me to get it working on some of MultiSource.
llvm-svn: 22558
2005-07-30 00:15:07 +00:00
Nate Begeman
0d1a7b6737
Break SCEVExpander out of IndVarSimplify into its own .h/.cpp file so that
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other passes may use it.
llvm-svn: 22557
2005-07-30 00:12:19 +00:00