Nate Begeman
a83ba0f5c9
Fix a fixme in CondPropagate.cpp by moving a PhiNode optimization into
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BasicBlock's removePredecessor routine. This requires shuffling around
the definition and implementation of hasContantValue from Utils.h,cpp into
Instructions.h,cpp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22664 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 23:24:19 +00:00
Chris Lattner
f065f05397
add a testcase nate requested
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22663 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 22:49:32 +00:00
Chris Lattner
26d91f1646
Modify how immediates are removed from base expressions to deal with the fact
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that the symbolic evaluator is not always able to use subtraction to remove
expressions. This makes the code faster, and fixes the last crash on 178.galgel.
Finally, add a statistic to see how many phi nodes are inserted.
On 178.galgel, we get the follow stats:
2562 loop-reduce - Number of PHIs inserted
3927 loop-reduce - Number of GEPs strength reduced
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22662 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 22:34:05 +00:00
Nate Begeman
2ac4fc0320
Fix a fixme in LegalizeDAG
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22661 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 21:43:28 +00:00
Nate Begeman
99558806f8
Hack to naturally align doubles in the constant pool. Remove this once we
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know what The Right Thing To Do is.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22660 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 21:04:09 +00:00
Nate Begeman
3d72d14887
Use the new subtarget support to automatically choose the correct ABI
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and asm printer for PowerPC if one is not specified.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22659 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 20:49:48 +00:00
Chris Lattner
2114b273ef
* Refactor some code into a new BasedUser::RewriteInstructionToUseNewBase
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method.
* Fix a crash on 178.galgel, where we would insert expressions before PHI
nodes instead of into the PHI node predecessor blocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22657 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 20:03:32 +00:00
Chris Lattner
763103c87d
This should not run lli, that is for llvm-test.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22656 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 19:56:35 +00:00
Chris Lattner
956344c1cb
None of these tests should require a working lli, they are codegen tests,
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not execution tests.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22655 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 19:55:39 +00:00
Chris Lattner
7a2ca56ef3
Fix a case that caused this to crash on 178.galgel
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22653 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 19:26:19 +00:00
Chris Lattner
7db543f887
Teach LSR about loop-variant expressions, such as loops like this:
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for (i = 0; i < N; ++i)
A[i][foo()] = 0;
here we still want to strength reduce the A[i] part, even though foo() is
l-v.
This also simplifies some of the 'CanReduce' logic.
This implements Transforms/LoopStrengthReduce/ops_after_indvar.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22652 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 19:08:16 +00:00
Chris Lattner
341bef6ed5
This testcase now passes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22651 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 19:08:07 +00:00
Nate Begeman
f08341457f
Remove some more dead code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22650 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 18:13:56 +00:00
Chris Lattner
3416e5f645
Refactor this code substantially with the following improvements:
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1. We only analyze instructions once, guaranteed
2. AnalyzeGetElementPtrUsers has been ripped apart and replaced with
something much simpler.
The next step is to handle expressions that are not all indvar+loop-invariant
values (e.g. handling indvar+loopvariant).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22649 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 17:40:30 +00:00
Andrew Lenharth
3f55a4fcab
No, IDEFs shouldn't be JITed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22648 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 15:32:36 +00:00
Misha Brukman
cd33eef1b2
* Unbreak release build
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* Add comments to #endif pragmas for readability
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22647 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 14:22:41 +00:00
Misha Brukman
e2d7fdf62c
* Unbreak optimized build (noticed by Eric van Riet Paap)
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* Comment #endif clauses for readability
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22646 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 14:16:48 +00:00
Nate Begeman
8c00f8cdc7
Add Subtarget support to PowerPC. Next up, using it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22644 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 07:12:09 +00:00
Chris Lattner
49f72e68cf
refactor some code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22643 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 01:19:13 +00:00
Chris Lattner
89fe67f19f
this is not implemented by lsr yet
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22642 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 01:18:48 +00:00
Chris Lattner
a4479ad25f
invert to if's to make the logic simpler
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22641 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 00:40:47 +00:00
Chris Lattner
f9186596f0
When processing outer loops and we find uses of an IV in inner loops, make
...
sure to handle the use, just don't recurse into it.
This permits us to generate this code for a simple nested loop case:
.LBB_foo_0: ; entry
stwu r1, -48(r1)
stw r29, 44(r1)
stw r30, 40(r1)
mflr r11
stw r11, 56(r1)
lis r2, ha16(L_A$non_lazy_ptr)
lwz r30, lo16(L_A$non_lazy_ptr)(r2)
li r29, 1
.LBB_foo_1: ; no_exit.0
bl L_bar$stub
li r2, 1
or r3, r30, r30
.LBB_foo_2: ; no_exit.1
lfd f0, 8(r3)
stfd f0, 0(r3)
addi r4, r2, 1
addi r3, r3, 8
cmpwi cr0, r2, 100
or r2, r4, r4
bne .LBB_foo_2 ; no_exit.1
.LBB_foo_3: ; loopexit.1
addi r30, r30, 800
addi r2, r29, 1
cmpwi cr0, r29, 100
or r29, r2, r2
bne .LBB_foo_1 ; no_exit.0
.LBB_foo_4: ; return
lwz r11, 56(r1)
mtlr r11
lwz r30, 40(r1)
lwz r29, 44(r1)
lwz r1, 0(r1)
blr
instead of this:
_foo:
.LBB_foo_0: ; entry
stwu r1, -48(r1)
stw r28, 44(r1) ;; uses an extra register.
stw r29, 40(r1)
stw r30, 36(r1)
mflr r11
stw r11, 56(r1)
li r30, 1
li r29, 0
or r28, r29, r29
.LBB_foo_1: ; no_exit.0
bl L_bar$stub
mulli r2, r28, 800 ;; unstrength-reduced multiply
lis r3, ha16(L_A$non_lazy_ptr) ;; loop invariant address computation
lwz r3, lo16(L_A$non_lazy_ptr)(r3)
add r2, r2, r3
mulli r4, r29, 800 ;; unstrength-reduced multiply
addi r3, r3, 8
add r3, r4, r3
li r4, 1
.LBB_foo_2: ; no_exit.1
lfd f0, 0(r3)
stfd f0, 0(r2)
addi r5, r4, 1
addi r2, r2, 8 ;; multiple stride 8 IV's
addi r3, r3, 8
cmpwi cr0, r4, 100
or r4, r5, r5
bne .LBB_foo_2 ; no_exit.1
.LBB_foo_3: ; loopexit.1
addi r28, r28, 1 ;;; Many IV's with stride 1
addi r29, r29, 1
addi r2, r30, 1
cmpwi cr0, r30, 100
or r30, r2, r2
bne .LBB_foo_1 ; no_exit.0
.LBB_foo_4: ; return
lwz r11, 56(r1)
mtlr r11
lwz r30, 36(r1)
lwz r29, 40(r1)
lwz r28, 44(r1)
lwz r1, 0(r1)
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22640 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-04 00:14:11 +00:00
Chris Lattner
7a65839f41
Teach loop-reduce to see into nested loops, to pull out immediate values
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pushed down by SCEV.
In a nested loop case, this allows us to emit this:
lis r3, ha16(L_A$non_lazy_ptr)
lwz r3, lo16(L_A$non_lazy_ptr)(r3)
add r2, r2, r3
li r3, 1
.LBB_foo_2: ; no_exit.1
lfd f0, 8(r2) ;; Uses offset of 8 instead of 0
stfd f0, 0(r2)
addi r4, r3, 1
addi r2, r2, 8
cmpwi cr0, r3, 100
or r3, r4, r4
bne .LBB_foo_2 ; no_exit.1
instead of this:
lis r3, ha16(L_A$non_lazy_ptr)
lwz r3, lo16(L_A$non_lazy_ptr)(r3)
add r2, r2, r3
addi r3, r3, 8
li r4, 1
.LBB_foo_2: ; no_exit.1
lfd f0, 0(r3)
stfd f0, 0(r2)
addi r5, r4, 1
addi r2, r2, 8
addi r3, r3, 8
cmpwi cr0, r4, 100
or r4, r5, r5
bne .LBB_foo_2 ; no_exit.1
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22639 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 23:44:42 +00:00
Chris Lattner
be3e5212e2
improve debug output
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22638 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 23:30:08 +00:00
Nate Begeman
1c73c7be9d
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22637 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 23:26:28 +00:00
Chris Lattner
6bc89e2159
this now passes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22636 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 22:51:40 +00:00
Chris Lattner
2351abaeab
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22635 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 22:51:21 +00:00
Andrew Lenharth
dc7c0b8c22
Alpha ABI specifies stack is always 16 byte alligned, and gcc does it, so I will too
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22634 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 22:33:21 +00:00
Chris Lattner
ec3fb63af2
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 :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22633 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 22:21:05 +00:00
Chris Lattner
52d83e66ee
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 :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22632 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 21:36:09 +00:00
Chris Lattner
a23076a5f6
Fix this to test the BE we care about
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22631 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 21:01:46 +00:00
Chris Lattner
2be12faabb
Fix an obvious bug in the Log2 stuff that broke SingleSource/UnitTests/2005-05-12-Int64ToFP
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last night.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22630 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 20:53:19 +00:00
Chris Lattner
4c64dd7977
Fix PR611, codegen'ing SREM of FP operands to fmod or fmodf instead of
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the sequence used for integer ops
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22629 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 20:31:37 +00:00
Chris Lattner
f1adce42b2
The correct fix for PR612, which also fixes
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Transforms/LowerInvoke/2005-08-03-InvokeWithPHIUse.ll
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22628 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:51:44 +00:00
Chris Lattner
999b814a6d
new testcase for PR612
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22627 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:51:15 +00:00
Chris Lattner
6e459bf0a7
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22626 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:34:29 +00:00
Chris Lattner
522611095d
new testcase for PR612
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22625 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:33:48 +00:00
Nate Begeman
1b0674c966
Add a couple rlwinm tests for bitfield clears
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22624 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:27:17 +00:00
Nate Begeman
2bbcca30b7
Update rlwimi tests to catch all the cases we care about
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22623 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:11:23 +00:00
Chris Lattner
82e6ef3ec3
Testcase that used to crash simplifycfg
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22622 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 18:01:07 +00:00
Chris Lattner
6306d07aa8
Fix Transforms/SimplifyCFG/2005-08-03-PHIFactorCrash.ll, a problem that
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occurred while bugpointing another testcase
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22621 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 17:59:45 +00:00
Chris Lattner
b06f677c53
add support for Graphviz when viewing CFGs
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22620 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 17:55:05 +00:00
Misha Brukman
0a3f677f09
Fix grammar: apostrophe-s ('s) is possessive, not plural; also iff vs. if.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22619 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 17:29:52 +00:00
Chris Lattner
89bfcd34cb
Wrap comments to 80 cols, fix code sequence for CountLeadingZeros_64 on
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non-ppc GCC 4.0 machines. Patch by Jim Laskey!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22618 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 16:53:58 +00:00
Chris Lattner
a34cbcc50a
minor capitalization thing, patch by Jim Laskey
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22617 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 16:52:22 +00:00
Chris Lattner
865dc8f64f
Fix another bug in the clz patch that caused miscompilations when !gcc4
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22616 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 01:04:40 +00:00
Chris Lattner
1aad921c18
Finally, add the required constraint checks to fix Transforms/SimplifyCFG/2005-08-01-PHIUpdateFail.ll
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the right way
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22615 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:59:12 +00:00
Chris Lattner
969c88e817
un-xfail this
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22614 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:58:44 +00:00
Chris Lattner
dc88dbeafa
Simplify some code, add the correct pred checks
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22613 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:38:27 +00:00
Chris Lattner
3b3efc7797
Refactor code out of PropagatePredecessorsForPHIs, turning it into a pure function with no side-effects
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22612 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-03 00:29:26 +00:00