Chris Lattner
23594d4537
simplify a bunch of code by using SelectionDAG::CreateStackTemporary
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instead of inlining its body.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46062 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 07:03:22 +00:00
Chris Lattner
f2670a89a7
Change legalizeop of FP_ROUND and FP_EXTEND to not fall through
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into the ANY_EXTEND/ZERO_EXTEND/SIGN_EXTEND code to simplify it.
Unmerge the code for FP_ROUND and FP_EXTEND from each other to
make each one simpler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46061 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 06:57:07 +00:00
Chris Lattner
572dee71af
Factor the ReachesChainWithoutSideEffects out of dag combiner into
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a public SDOperand::reachesChainWithoutSideEffects method. No
functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46050 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-16 05:49:24 +00:00
Dale Johannesen
4af3494452
Fix and enable EH for x86-64 Darwin. Adds
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ShortenEHDataFor64Bits as a not-very-accurate
abstraction to cover all the changes in DwarfWriter.
Some cosmetic changes to Darwin assembly code for
gcc testsuite compatibility.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46029 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 23:24:56 +00:00
Owen Anderson
40a627ddf8
Move some calls to getVRegDef higher in the callgraph, so they don't get executed as frequently in performance sensitive code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46027 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 22:58:11 +00:00
Chris Lattner
034f12ea08
The type of the 'abort' node should be pointer type (because
...
it's a function pointer) not MVT::Other. This fixes builtin_trap
lowering on ppc, alpha, ia64
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46018 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 22:09:33 +00:00
Owen Anderson
7047dd4d22
Remove DefInst from LiveVariables::VarInfo. Use the facilities on MachineRegisterInfo instead.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46016 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 22:02:46 +00:00
Chris Lattner
41bab0beac
Add support for targets that have a legal ISD::TRAP.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46014 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 21:58:08 +00:00
Evan Cheng
4c46fc6bbf
Oops. Forgot to commit this.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46002 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 07:49:36 +00:00
Anton Korobeynikov
66fac79b89
For PR1839: add initial support for __builtin_trap. llvm-gcc part is missed
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as well as PPC codegen
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46001 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 07:02:33 +00:00
Evan Cheng
c67e6e8e82
ByVal stack slot alignment should be at least as large as pointer ABI alignment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45995 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-15 03:14:05 +00:00
Chris Lattner
459525df1e
don't create the post-ra scheduler unless it is enabled.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45972 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14 19:00:06 +00:00
Chris Lattner
a6c3f80d97
remove dead #include
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45971 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-14 18:45:28 +00:00
Duncan Sands
a41d719803
Remove the assumption that byval has been applied to
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a pointer to a struct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45939 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-13 21:19:59 +00:00
Chris Lattner
aad193a7e9
implement support for sinking a load out the bottom of a block that
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has no stores between the load and the end of block. This works
great and sinks hundreds of stores, but we can't turn it on because
machineinstrs don't have volatility information and we don't want to
sink volatile stores :(
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45894 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-12 00:17:41 +00:00
Chris Lattner
a22edc82ca
Simplify the side effect stuff a bit more and make licm/sinking
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both work right according to the new flags.
This removes the TII::isReallySideEffectFree predicate, and adds
TII::isInvariantLoad.
It removes NeverHasSideEffects+MayHaveSideEffects and adds
UnmodeledSideEffects as machine instr flags. Now the clients
can decide everything they need.
I think isRematerializable can be implemented in terms of the
flags we have now, though I will let others tackle that.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45843 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 23:08:24 +00:00
Chris Lattner
2445888208
Clamp down on sinking of lots of instructions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45841 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 22:35:15 +00:00
Duncan Sands
007f9847c4
Output sinl for a long double FSIN node, not sin.
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Likewise fix up a bunch of other libcalls. While
there I remove NEG_F32 and NEG_F64 since they are
not used anywhere. This fixes 9 Ada ACATS failures.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45833 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 10:28:30 +00:00
Evan Cheng
8480293f41
Only remat loads from immutable stack slots.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45831 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 08:24:38 +00:00
Evan Cheng
a07cec9e24
Simplify some code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45830 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 08:22:10 +00:00
Owen Anderson
c95f075c43
Don't use LiveVariables::VarInfo::DefInst.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45815 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 03:12:54 +00:00
Dale Johannesen
038129dd58
Emit unused EH frames for weak definitions on Darwin,
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because assembler/linker can't cope with weak absolutes.
PR 1880.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45811 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 02:03:30 +00:00
Owen Anderson
ddd060ffcf
Get rid of all uses of LiveVariables::VarInfo::DefInst in favor of the equivalent API from
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MachineRegisterInfo. Once all clients are switched over, the former will be going away.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45805 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 01:36:43 +00:00
Owen Anderson
dc4d6558e4
Add more comments explaining the basics of how the decision of when to rename and when to insert
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copies is made.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45799 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 00:47:01 +00:00
Owen Anderson
b199cbec2e
Get rid of the isKillInst predicate. LiveVariables already provides this information.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45797 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 00:33:11 +00:00
Owen Anderson
9c2efa8a8f
Copies need to be inserted before the first terminator, not at the end of the block.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45791 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-10 00:01:41 +00:00
Evan Cheng
19107563af
Special copy SUnit's do not have SDNode's.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45787 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-09 23:01:55 +00:00
Owen Anderson
ec1213fbbb
Clean up StrongPHIElimination a bit, and add some more comments to the internal structures. There's
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still more work to do on this front.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45783 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-09 22:40:54 +00:00
Owen Anderson
864e3a3762
StrongPHIElim: Now with even fewer trivial bugs!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45775 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-09 10:41:39 +00:00
Owen Anderson
719fef648d
Fix an infinite recursion bug in InsertCopies.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45774 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-09 10:32:30 +00:00
Owen Anderson
cb7d949a19
Fix some simple bugs. StrongPHIElimination now does not crash on 164.gzip.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45773 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-09 06:19:05 +00:00
Chris Lattner
07649d9265
Make load->store deletion a bit smarter. This allows us to compile this:
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void test(long long *P) { *P ^= 1; }
into just:
_test:
movl 4(%esp), %eax
xorl $1, (%eax)
ret
instead of code like this:
_test:
movl 4(%esp), %ecx
xorl $1, (%ecx)
movl 4(%ecx), %edx
movl %edx, 4(%ecx)
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45762 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-08 23:08:06 +00:00
Owen Anderson
0c5714bb99
Rename registers that do not need copies.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45759 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-08 21:54:52 +00:00
Owen Anderson
0d893b4038
Actually insert copies now!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45738 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-08 05:16:15 +00:00
Owen Anderson
0b4825c38b
Oops, missed one.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45719 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 21:32:09 +00:00
Owen Anderson
9e549202a0
Make some predicates static.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45718 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 21:30:40 +00:00
Gordon Henriksen
c45d98d966
Pruning includes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45700 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 13:30:38 +00:00
Chris Lattner
f14cf85e33
remove #includage
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45697 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 07:42:25 +00:00
Chris Lattner
749c6f6b5e
rename TargetInstrDescriptor -> TargetInstrDesc.
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Make MachineInstr::getDesc return a reference instead
of a pointer, since it can never be null.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45695 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 07:27:27 +00:00
Chris Lattner
3db805ea80
simplify some code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45693 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 06:47:00 +00:00
Chris Lattner
0ff23966fe
Rename all the M_* flags to be namespace qualified enums, and switch
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all clients over to using predicates instead of these flags directly.
These are now private values which are only to be used to statically
initialize the tables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45692 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 06:42:05 +00:00
Chris Lattner
e32d765f99
add more and significantly better comments to the rest of the machineinstr
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flags that can be set. Add predicates for the ones lacking it, and switch
some clients over to using the predicates instead of Flags directly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45690 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 06:21:53 +00:00
Chris Lattner
f86e1df877
simplify some code using new predicates
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45689 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 05:40:58 +00:00
Chris Lattner
8f707e15fb
rename hasVariableOperands() -> isVariadic(). Add some comments.
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Evan, please review the comments I added to getNumDefs to make sure
that they are accurate, thx.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45687 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 05:19:29 +00:00
Chris Lattner
349c495200
Move a bunch more accessors from TargetInstrInfo to TargetInstrDescriptor
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45680 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 03:13:06 +00:00
Chris Lattner
ba6da5d5b7
remove some uses of MachineOpCode, move getSchedClass
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into TargetInstrDescriptor from TargetInstrInfo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45678 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 02:46:03 +00:00
Chris Lattner
8ca5c67c6e
Add predicates methods to TargetOperandInfo, and switch all clients
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over to using them, instead of diddling Flags directly. Change the
various flags from const variables to enums.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45677 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 02:39:19 +00:00
Gordon Henriksen
572742e876
Setting GlobalDirective in TargetAsmInfo by default rather than
...
providing a misleading facility. It's used once in the MIPS backend
and hardcoded as "\t.globl\t" everywhere else.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45676 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 02:31:11 +00:00
Chris Lattner
69244300b8
Rename MachineInstr::getInstrDescriptor -> getDesc(), which reflects
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that it is cheap and efficient to get.
Move a variety of predicates from TargetInstrInfo into
TargetInstrDescriptor, which makes it much easier to query a predicate
when you don't have TII around. Now you can use MI->getDesc()->isBranch()
instead of going through TII, and this is much more efficient anyway. Not
all of the predicates have been moved over yet.
Update old code that used MI->getInstrDescriptor()->Flags to use the
new predicates in many places.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45674 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:56:04 +00:00
Owen Anderson
6425f8be72
Update CodeGen for MRegisterInfo --> TargetInstrInfo changes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45673 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:35:56 +00:00
Gordon Henriksen
93f96d00bf
Ammending r45669 with a missing file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45671 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:33:09 +00:00
Gordon Henriksen
8fa8929177
With this patch, the LowerGC transformation becomes the
...
ShadowStackCollector, which additionally has reduced overhead with
no sacrifice in portability.
Considering a function @fun with 8 loop-local roots,
ShadowStackCollector introduces the following overhead
(x86):
; shadowstack prologue
movl L_llvm_gc_root_chain$non_lazy_ptr, %eax
movl (%eax), %ecx
movl $___gc_fun, 20(%esp)
movl $0, 24(%esp)
movl $0, 28(%esp)
movl $0, 32(%esp)
movl $0, 36(%esp)
movl $0, 40(%esp)
movl $0, 44(%esp)
movl $0, 48(%esp)
movl $0, 52(%esp)
movl %ecx, 16(%esp)
leal 16(%esp), %ecx
movl %ecx, (%eax)
; shadowstack loop overhead
(none)
; shadowstack epilogue
movl 48(%esp), %edx
movl %edx, (%ecx)
; shadowstack metadata
.align 3
___gc_fun: # __gc_fun
.long 8
.space 4
In comparison to LowerGC:
; lowergc prologue
movl L_llvm_gc_root_chain$non_lazy_ptr, %eax
movl (%eax), %ecx
movl %ecx, 48(%esp)
movl $8, 52(%esp)
movl $0, 60(%esp)
movl $0, 56(%esp)
movl $0, 68(%esp)
movl $0, 64(%esp)
movl $0, 76(%esp)
movl $0, 72(%esp)
movl $0, 84(%esp)
movl $0, 80(%esp)
movl $0, 92(%esp)
movl $0, 88(%esp)
movl $0, 100(%esp)
movl $0, 96(%esp)
movl $0, 108(%esp)
movl $0, 104(%esp)
movl $0, 116(%esp)
movl $0, 112(%esp)
; lowergc loop overhead
leal 44(%esp), %eax
movl %eax, 56(%esp)
leal 40(%esp), %eax
movl %eax, 64(%esp)
leal 36(%esp), %eax
movl %eax, 72(%esp)
leal 32(%esp), %eax
movl %eax, 80(%esp)
leal 28(%esp), %eax
movl %eax, 88(%esp)
leal 24(%esp), %eax
movl %eax, 96(%esp)
leal 20(%esp), %eax
movl %eax, 104(%esp)
leal 16(%esp), %eax
movl %eax, 112(%esp)
; lowergc epilogue
movl 48(%esp), %edx
movl %edx, (%ecx)
; lowergc metadata
(none)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45670 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:30:53 +00:00
Gordon Henriksen
ce2247755e
Enabling the target-independent garbage collection infrastructure by hooking it
...
up to the various compiler pipelines.
This doesn't actually add support for any GC algorithms, which means it
temporarily breaks a few tests. To be fixed shortly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45669 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-07 01:30:38 +00:00
Chris Lattner
834f1ce031
rename isLoad -> isSimpleLoad due to evan's desire to have such a predicate.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45667 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 23:38:27 +00:00
Chris Lattner
2e48a70b35
rename isStore -> mayStore to more accurately reflect what it captures.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45656 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 08:36:04 +00:00
Duncan Sands
920595a960
Remove an unused variable.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45655 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 07:43:13 +00:00
Chris Lattner
19033bf7f8
make this build with newer gcc's
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45637 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 23:29:51 +00:00
Nate Begeman
2281a99141
If custom lowering of insert element fails, the result Val will be 0.
...
Don't overwrite a variable used by the fallthrough code path in this
case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45630 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 20:47:37 +00:00
Chris Lattner
54b62f3af5
Fix build issue on certain compilers.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45629 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 20:15:42 +00:00
Chris Lattner
e430e1c072
The current impl is really trivial, add some comments about how it can be made better.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45625 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 06:47:58 +00:00
Chris Lattner
3c42f12118
allow sinking to be enabled for the jit
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45624 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 06:14:16 +00:00
Chris Lattner
ba84ed7e92
don't sink anything with side effects, this makes lots of stuff work, but sinks almost nothing.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45617 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 02:33:22 +00:00
Chris Lattner
9bb459b554
fix a common crash.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45614 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 01:39:17 +00:00
Owen Anderson
a393cd3306
I should not be allowed to commit when sleepy.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45608 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 00:48:55 +00:00
Bill Wendling
67d65bb69d
Don't recalculate the loop info and loop dominators analyses if they're
...
preserved.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45596 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 20:54:55 +00:00
Bill Wendling
2674d71df0
80-column violations.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45574 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 08:59:18 +00:00
Bill Wendling
d5da7048c2
Add that this preserves some analyses.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45573 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 08:48:49 +00:00
Bill Wendling
cc8f603f53
Move option to enable machine LICM into LLVMTargetMachine.cpp.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45572 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 08:11:03 +00:00
Bill Wendling
b082c6f5d9
Call the parent's getAnalysisUsage.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45571 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 07:50:05 +00:00
Chris Lattner
c4ce73f666
Add a really quick hack at a machine code sinking pass, enabled with --enable-sinking.
...
It is missing validity checks, so it is known broken. However, it is powerful enough
to compile this contrived code:
void test1(int C, double A, double B, double *P) {
double Tmp = A*A+B*B;
*P = C ? Tmp : A;
}
into:
_test1:
movsd 8(%esp), %xmm0
cmpl $0, 4(%esp)
je LBB1_2 # entry
LBB1_1: # entry
movsd 16(%esp), %xmm1
mulsd %xmm1, %xmm1
mulsd %xmm0, %xmm0
addsd %xmm1, %xmm0
LBB1_2: # entry
movl 24(%esp), %eax
movsd %xmm0, (%eax)
ret
instead of:
_test1:
movsd 16(%esp), %xmm0
mulsd %xmm0, %xmm0
movsd 8(%esp), %xmm1
movapd %xmm1, %xmm2
mulsd %xmm2, %xmm2
addsd %xmm0, %xmm2
cmpl $0, 4(%esp)
je LBB1_2 # entry
LBB1_1: # entry
movapd %xmm2, %xmm1
LBB1_2: # entry
movl 24(%esp), %eax
movsd %xmm1, (%eax)
ret
woo.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45570 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 07:36:53 +00:00
Chris Lattner
ac69582664
remove dead #includes and reorder the rest.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45569 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-04 06:41:45 +00:00
Bill Wendling
dde059a9de
Use the correct MachineRegisterInfo object.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45499 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-02 21:10:54 +00:00
Bill Wendling
a4b662272d
Remove dead code.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45496 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-02 20:47:37 +00:00
Bill Wendling
9258cd3994
Use the new architecture to get the containing machine basic block for a machine
...
instruction. Also, use "splice" to move the new instruction instead of
remove/insert (where it was leaking memory anyway).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45492 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-02 19:32:43 +00:00
Owen Anderson
f6372aa1cc
Move some more instruction creation methods from RegisterInfo into InstrInfo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45484 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 21:11:32 +00:00
Chris Lattner
80fe5311b5
Make MachineRegisterInfo::getVRegDef more efficient by aiming the keep the def of the vreg at the start of the list, so the list doesn't need to be traversed.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45483 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 21:08:22 +00:00
Chris Lattner
e138b3dd1f
switch the register iterator to act more like hte LLVM value iterator: dereferencing
...
it now returns the machineinstr of the use. To get the operand, use I.getOperand().
Add a new MachineRegisterInfo::replaceRegWith, which is basically like
Value::replaceAllUsesWith.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45482 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 20:36:19 +00:00
Chris Lattner
a91a7d594f
Add a trivial but handy function to efficiently return the machine
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instruction that defines the specified vreg. Crazy.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45480 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 03:07:29 +00:00
Chris Lattner
62ed6b9ade
Implement automatically updated def/use lists for all MachineInstr register
...
operands. The lists are currently kept in MachineRegisterInfo, but it does
not yet provide an iterator interface to them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45477 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 01:12:31 +00:00
Chris Lattner
6410552250
Fix a problem where lib/Target/TargetInstrInfo.h would include and use
...
a header file from libcodegen. This violates a layering order: codegen
depends on target, not the other way around. The fix to this is to
split TII into two classes, TII and TargetInstrInfoImpl, which defines
stuff that depends on libcodegen. It is defined in libcodegen, where
the base is not.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45475 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-01 01:03:04 +00:00
Duncan Sands
b027fa001f
Fix PR1833 - eh.exception and eh.selector return two
...
values, which means doing extra legalization work.
It would be easier to get this kind of thing right if
there was some documentation...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45472 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 18:35:50 +00:00
Owen Anderson
d10fd9791c
Move copyRegToReg from MRegisterInfo to TargetInstrInfo. This is part of the
...
Machine-level API cleanup instigated by Chris.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45470 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 06:32:00 +00:00
Chris Lattner
f20c1a497f
properly encapsulate the parent field of MBB and MI with get/set accessors.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45469 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 04:56:33 +00:00
Chris Lattner
534bcfb270
update a couple of references to SSARegMap.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45468 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 04:16:08 +00:00
Chris Lattner
84bc5427d6
Rename SSARegMap -> MachineRegisterInfo in keeping with the idea
...
that "machine" classes are used to represent the current state of
the code being compiled. Given this expanded name, we can start
moving other stuff into it. For now, move the UsedPhysRegs and
LiveIn/LoveOuts vectors from MachineFunction into it.
Update all the clients to match.
This also reduces some needless #includes, such as MachineModuleInfo
from MachineFunction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45467 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-31 04:13:23 +00:00
Chris Lattner
8aa797aa51
Add new shorter predicates for testing machine operands for various types:
...
e.g. MO.isMBB() instead of MO.isMachineBasicBlock(). I don't plan on
switching everything over, so new clients should just start using the
shorter names.
Remove old long accessors, switching everything over to use the short
accessor: getMachineBasicBlock() -> getMBB(),
getConstantPoolIndex() -> getIndex(), setMachineBasicBlock -> setMBB(), etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45464 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 23:10:15 +00:00
Chris Lattner
f73823000e
More cleanups for MachineOperand:
...
- Eliminate the static "print" method for operands, moving it
into MachineOperand::print.
- Change various set* methods for register flags to take a bool
for the value to set it to. Remove unset* methods.
- Group methods more logically by operand flavor in MachineOperand.h
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45461 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 21:56:09 +00:00
Chris Lattner
e3087890ac
MachineOperand:
...
- Add getParent() accessors.
- Move SubReg out of the AuxInfo union, to make way for future changes.
- Remove the getImmedValue/setImmedValue methods.
- in some MachineOperand::Create* methods, stop initializing fields that are dead.
MachineInstr:
- Delete one copy of the MachineInstr printing code, now there is only one dump
format and one copy of the code.
- Make MachineOperand use the parent field to get info about preg register names if
no target info is otherwise available.
- Move def/use/kill/dead flag printing to the machineoperand printer, so they are
always printed for an operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45460 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 21:31:53 +00:00
Chris Lattner
1c3e1e2ed0
fix typo duncan noticed!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45459 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 21:21:10 +00:00
Chris Lattner
e26dcfe6af
simpilfy some register printing code.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45458 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 21:08:36 +00:00
Chris Lattner
7da5313d3f
eliminate a copy of the machineoperand printing stuff. Keep the copy that
...
knows how to print offsets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45457 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 21:03:30 +00:00
Chris Lattner
fde5f801be
Simplify and clean up some machine operand/instr printing/dumping stuff.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45456 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 21:01:27 +00:00
Chris Lattner
0974d9a524
two register machineoperands are not identical unless their subregs match.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45455 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 20:55:08 +00:00
Chris Lattner
9e3304900f
MachineOperand::getImmedValue -> MachineOperand::getImm
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45454 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 20:50:28 +00:00
Chris Lattner
e12d6abfdf
make machine operands fatter: give each one an up-pointer to the
...
machineinstr that owns it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45449 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 06:11:04 +00:00
Chris Lattner
9ce2e9d5a0
use simplified operand addition methods.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45436 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 00:57:42 +00:00
Chris Lattner
fec65d5562
use simplified operand addition methods.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45435 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 00:51:11 +00:00
Chris Lattner
8019f41c0b
Start using the simplified methods for adding operands.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45432 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 00:41:17 +00:00
Chris Lattner
a4161ee994
simplify some code by factoring operand construction better.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45428 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-30 00:12:25 +00:00
Chris Lattner
4ee451de36
Remove attribution from file headers, per discussion on llvmdev.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45418 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:36:04 +00:00
Chris Lattner
fc643c5e88
remove attribution from lib Makefiles.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45415 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 20:09:26 +00:00
Chris Lattner
63079f0757
Fold comparisons against a constant nan, and optimize ORD/UNORD
...
comparisons with a constant. This allows us to compile isnan to:
_foo:
fcmpu cr7, f1, f1
mfcr r2
rlwinm r3, r2, 0, 31, 31
blr
instead of:
LCPI1_0: ; float
.space 4
_foo:
lis r2, ha16(LCPI1_0)
lfs f0, lo16(LCPI1_0)(r2)
fcmpu cr7, f1, f0
mfcr r2
rlwinm r3, r2, 0, 31, 31
blr
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45405 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 08:37:08 +00:00
Chris Lattner
b253a8b382
make sure not to zap volatile stores, thanks a lot to Dale for noticing this!
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45402 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 07:15:45 +00:00
Chris Lattner
5938bef2d2
don't fold fp_round(fp_extend(load)) -> fp_round(extload)
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45400 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 06:55:23 +00:00
Chris Lattner
3c87285af6
Delete a store whose input is a load from the same pointer:
...
x = load p
store x -> p
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45398 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-29 06:26:16 +00:00
Owen Anderson
f1519e8361
Flesh out the Briggs implementation a little bit more, fix a few FIXMEs.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45347 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-24 22:12:23 +00:00
Owen Anderson
efbcebc95d
Sketch out an implementation of Briggs' copy placement algorithm.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45334 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-23 15:37:26 +00:00
Chris Lattner
2ceb2cfa8e
initial code for forming an FGETSIGN node. This is disabled until
...
legalizer support goes in.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45323 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 21:35:38 +00:00
Chris Lattner
d268a497f9
improve support for fgetsign
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45322 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 21:26:52 +00:00
Chris Lattner
b16f55f3c8
Tell TargetLoweringOpt whether it is running before
...
or after legalize.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45321 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 20:56:36 +00:00
Chris Lattner
1a3048bb8e
Add a new FGETSIGN operation, which defaults to expand on all
...
targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45320 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 20:47:56 +00:00
Gordon Henriksen
a6c9925087
Use getIntrinsicID instead of looking up intrinsic prototypes. Also
...
fixes a bug with indirect calls. (Test case will be included with
ocaml collector patch.)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45316 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 17:27:01 +00:00
Owen Anderson
cae8d8d4be
Note what still needs doing.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45310 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 04:59:10 +00:00
Owen Anderson
22c43b2988
Remove critical edge breaking. It won't be necessary as long as we are very careful when inserting copies.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45309 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-22 04:50:11 +00:00
Evan Cheng
180c210a1d
More accurate checks for two-address constraints.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45259 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-20 09:25:31 +00:00
Evan Cheng
689494208b
The physical register + virtual register joining requirement was much too strict.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45253 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-20 02:23:25 +00:00
Evan Cheng
d6c0758944
Bring back a burr scheduling heuristic that's still needed.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45252 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-20 02:22:36 +00:00
Bill Wendling
60ff1a3005
Updated comments to reflect what "side effects" means in this situation.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45245 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-20 01:08:10 +00:00
Duncan Sands
6f74b48862
Simplify LowerCallTo by using a callsite.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45198 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-19 09:48:52 +00:00
Duncan Sands
481dc721c3
The C++ exception handling personality function wants
...
to know about calls that cannot throw ('nounwind'):
if such a call does throw for some reason then the
personality will terminate the program. The distinction
between an ordinary call and a nounwind call is that
an ordinary call gets an entry in the exception table
but a nounwind call does not. This patch sets up the
exception table appropriately. One oddity is that
I've chosen to bracket nounwind calls with labels (like
invokes) - the other choice would have been to bracket
ordinary calls with labels. While bracketing
ordinary calls is more natural (because bracketing
by labels would then correspond exactly to getting an
entry in the exception table), I didn't do it because
introducing labels impedes some optimizations and I'm
guessing that ordinary calls occur more often than
nounwind calls. This fixes the gcc filter2 eh test,
at least at -O0 (the inliner needs some tweaking at
higher optimization levels).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45197 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-19 07:36:31 +00:00
Evan Cheng
02132d62c1
Don't leave newly created nodes around if it turns out they are not needed.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45186 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-19 01:34:38 +00:00
Bill Wendling
280f4565eb
Add debugging info. Use the newly created "hasUnmodelledSideEffects" method.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45178 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-18 21:38:04 +00:00
Anton Korobeynikov
feb8893d17
Support more insane CEP's in AsmPrinter (Yes, PyPy folks do really use them).
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45172 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-18 20:53:41 +00:00
Evan Cheng
636e5a216c
Fix PR1872: SrcValue and SrcValueOffset should not be used to compute load / store node id.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45167 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-18 19:38:14 +00:00
Evan Cheng
8131013861
Also print alignment and volatileness.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45164 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-18 19:06:30 +00:00
Evan Cheng
beec823d4b
FIX for PR1799: When a load is unfolded from an instruction, check if it is a new node. If not, do not create a new SUnit.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45157 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-18 08:42:10 +00:00
Evan Cheng
88ce93e0ef
SelectionDAG::dump() should print SrcValue of LoadSDNode and StoreSDNode.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45151 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-18 07:02:08 +00:00
Duncan Sands
fd7b326bea
Make invokes of inline asm legal. Teach codegen
...
how to lower them (with no attempt made to be
efficient, since they should only occur for
unoptimized code).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45108 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-17 18:08:19 +00:00
Christopher Lamb
43ad6b3e0d
Change the PointerType api for creating pointer types. The old functionality of PointerType::get() has become PointerType::getUnqual(), which returns a pointer in the generic address space. The new prototype of PointerType::get() requires both a type and an address space.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45082 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-17 01:12:55 +00:00
Owen Anderson
87a702be1a
Break local interferences in StrongPHIElimination. One step closer...
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45070 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-16 05:44:27 +00:00
Owen Anderson
965b467767
A few more comments.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45069 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-16 04:07:23 +00:00
Dan Gohman
ded2b0d0fb
Add explicit keywords, and fix a minor typo that they uncovered.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45034 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 15:41:34 +00:00
Evan Cheng
7c07aebd19
Bug fix. Must also match ResNo when matching an operand with a user.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45028 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-14 08:25:15 +00:00
Owen Anderson
62d67dd3a3
Add register pairs to the list to check for local interferences.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44987 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-13 05:53:03 +00:00
Owen Anderson
4ba08ecbcf
Remove ugly and horrible code. It's not necessary for correctness, and can be added back later if it causes code quality issues.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44986 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-13 05:43:37 +00:00
Evan Cheng
6e141fd048
Implicit def instructions, e.g. X86::IMPLICIT_DEF_GR32, are always re-materializable and they should not be spilled.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44960 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 23:12:09 +00:00
Dan Gohman
890813243f
Allow vector integer constants to be created with
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SelectionDAG::getConstant, in the same way as vector floating-point
constants. This allows the legalize expansion code for @llvm.ctpop and
friends to be usable with vector types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44954 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 22:21:26 +00:00
Owen Anderson
ed2ffa25a1
Forgot to remove a register from the PHI-union after I'd determined that it
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interfered with other registers. Seems like that might be a good thing to do. :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44902 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-12 01:25:08 +00:00
Evan Cheng
39c883cfc5
If deleting a reload instruction due to reuse (value is available in register R and reload is targeting R), make sure to invalidate the kill information of the last kill.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44894 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 23:36:57 +00:00
Bill Wendling
efe2be7976
Need to grow the indexed map. Added debug statements.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44892 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 23:27:51 +00:00
Bill Wendling
a17ad59e13
Simplify slightly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44881 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 22:22:22 +00:00
Owen Anderson
d525f664c9
More progress on StrongPHIElimination. Now we actually USE the DomForest!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44877 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 20:12:11 +00:00
Bill Wendling
12ebf14048
Blark! How in the world did this work without this?!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44874 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 19:40:06 +00:00
Bill Wendling
28bd5f0e47
- Update the virtual reg to machine instruction map when hoisting.
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- Fix subtle bug when creating initially creating this map.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44873 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 19:17:04 +00:00
Bill Wendling
650b0527a4
Checking for "zero operands" during the "CanHoistInst()" method isn't necessary
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because those with side effects will be caught by other checks in here.
Also, simplify the check for a BB in a sub loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44871 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 18:45:11 +00:00
Evan Cheng
22f07ffd27
Switch over to MachineLoopInfo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44838 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 02:09:15 +00:00
Evan Cheng
ce25443608
Pretty print shuffle mask operand.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44837 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 02:08:35 +00:00
Gordon Henriksen
ad93c4f936
CollectorMetadata and Collector are rejiggered to get along with
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per-function collector model. Collector is now the factory for
CollectorMetadata, so the latter may be subclassed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44827 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-11 00:30:17 +00:00
Owen Anderson
afc6de0015
A little more progress on StrongPHIElimination, now that I have a better sense of
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how the CodeGen machinery works.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44786 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 08:07:09 +00:00
Christopher Lamb
11a4f64bd4
Improve branch folding by recgonizing that explict successor relationships impact the value of fall-through choices.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44785 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-10 07:24:06 +00:00
Chris Lattner
46a6e79e60
Duncan points out that the subtraction is unneeded since hte code
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knows the vector is not pow2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44740 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-09 17:56:34 +00:00
Chris Lattner
0097555e01
Add support for splitting the operand of a return instruction.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44728 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-09 00:06:19 +00:00
Bill Wendling
041b3f8356
Reverting 44702. It wasn't correct to rename them.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44727 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 23:58:46 +00:00
Chris Lattner
eeaad40246
add many new cases to SplitResult. SplitResult now handles all the cases that LegalizeDAG does.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44726 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 23:58:27 +00:00
Chris Lattner
50187864c1
Implement splitting support for store, allowing us to compile:
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%f8 = type <8 x float>
define void @test_f8(%f8* %P, %f8* %Q, %f8* %S) {
%p = load %f8* %P ; <%f8> [#uses=1]
%q = load %f8* %Q ; <%f8> [#uses=1]
%R = add %f8 %p, %q ; <%f8> [#uses=1]
store %f8 %R, %f8* %S
ret void
}
into:
_test_f8:
movaps 16(%rdi), %xmm0
addps 16(%rsi), %xmm0
movaps (%rdi), %xmm1
addps (%rsi), %xmm1
movaps %xmm0, 16(%rdx)
movaps %xmm1, (%rdx)
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44725 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 23:24:26 +00:00
Chris Lattner
697b53e0b2
implement vector splitting of load, undef, and binops.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44724 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 23:08:49 +00:00
Chris Lattner
e4af7b5a57
implement some methods.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44723 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 22:40:18 +00:00
Chris Lattner
13c6a1740c
add scaffolding for splitting of vectors.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44722 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 22:37:41 +00:00
Chris Lattner
7514646b31
reorganize header to separate into functional blocks.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44719 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 21:59:32 +00:00
Chris Lattner
ee88813275
split scalarization out to its own file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44718 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 20:30:28 +00:00
Chris Lattner
cc663a8112
Split expansion out into its own file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44717 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 20:27:32 +00:00
Chris Lattner
08d1275cb8
Split promotion support out to its own file.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44716 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 20:24:38 +00:00
Chris Lattner
524825b626
Rename LegalizeDAGTypes.cpp -> LegalizeTypes.cpp
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44715 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 20:17:13 +00:00
Chris Lattner
dff67f5770
Split the class definition of DAGTypeLegalizer out into a header.
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Leave it visibility hidden, but not in an anon namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44714 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 20:16:06 +00:00
Bill Wendling
320c630c1b
Renaming:
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isTriviallyReMaterializable -> hasNoSideEffects
isReallyTriviallyReMaterializable -> isTriviallyReMaterializable
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44702 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 07:17:56 +00:00
Bill Wendling
b48519cbad
Incorporated comments from Evan and Chris:
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http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071203/056043.html
http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20071203/056048.html
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44696 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-08 01:47:01 +00:00
Bill Wendling
0f940c95d4
Initial commit of the machine code LICM pass. It successfully hoists this:
...
_foo:
li r2, 0
LBB1_1: ; bb
li r5, 0
stw r5, 0(r3)
addi r2, r2, 1
addi r3, r3, 4
cmplw cr0, r2, r4
bne cr0, LBB1_1 ; bb
LBB1_2: ; return
blr
to:
_foo:
li r2, 0
li r5, 0
LBB1_1: ; bb
stw r5, 0(r3)
addi r2, r2, 1
addi r3, r3, 4
cmplw cr0, r2, r4
bne cr0, LBB1_1 ; bb
LBB1_2: ; return
blr
ZOMG!! :-)
Moar to come...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44687 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-07 21:42:31 +00:00
Evan Cheng
dfb1561434
Add an option to control this heuristic tweak so I can test it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44671 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-07 00:28:32 +00:00
Dale Johannesen
e0e6fac5e9
Redo previous patch so optimization only done for i1.
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Simpler and safer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44663 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 17:53:31 +00:00
Evan Cheng
33faddc35d
Turning simple splitting on. Start testing new coalescer heuristics as new llcbeta.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44660 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 08:54:31 +00:00
Chris Lattner
d3fd6d2b25
third time around: instead of disabling this completely,
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only disable it if we don't know it will be obviously profitable.
Still fixme, but less so. :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44658 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 07:47:55 +00:00
Chris Lattner
e00cbad78d
Actually, disable this code for now. More analysis and improvements to
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the X86 backend are needed before this should be enabled by default.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44657 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 07:44:31 +00:00
Chris Lattner
e70da20f9a
implement a readme entry, compiling the code into:
...
_foo:
movl $12, %eax
andl 4(%esp), %eax
movl _array(%eax), %eax
ret
instead of:
_foo:
movl 4(%esp), %eax
shrl $2, %eax
andl $3, %eax
movl _array(,%eax,4), %eax
ret
As it turns out, this triggers all the time, in a wide variety of
situations, for example, I see diffs like this in various programs:
- movl 8(%eax), %eax
- shll $2, %eax
- andl $1020, %eax
- movl (%esi,%eax), %eax
+ movzbl 8(%eax), %eax
+ movl (%esi,%eax,4), %eax
- shll $2, %edx
- andl $1020, %edx
- movl (%edi,%edx), %edx
+ andl $255, %edx
+ movl (%edi,%edx,4), %edx
Unfortunately, I also see stuff like this, which can be fixed in the
X86 backend:
- andl $85, %ebx
- addl _bit_count(,%ebx,4), %ebp
+ shll $2, %ebx
+ andl $340, %ebx
+ addl _bit_count(%ebx), %ebp
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44656 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 07:33:36 +00:00
Chris Lattner
72b2df1f77
implement the rest of the functionality from SelectionDAGLegalize::ScalarizeVectorOp
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44654 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 05:53:43 +00:00
Dale Johannesen
59f1e97ef3
Fix PR1842.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44649 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 01:43:46 +00:00
Evan Cheng
5ef3a04b54
Fix for PR1831: if all defs of an interval are re-materializable, then it's a preferred spill candiate.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44644 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-06 00:01:56 +00:00
Evan Cheng
d120ffd26f
MachineInstr can change. Store indexes instead.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44612 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 10:24:35 +00:00
Evan Cheng
adf8590690
If a split live interval is spilled again, remove the kill marker on its last use.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44611 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 09:51:10 +00:00
Evan Cheng
f38d14f03e
Clobber more bugs.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44610 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 09:05:34 +00:00
Evan Cheng
b50bb8cf19
Fix kill info for split intervals.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44609 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 08:16:32 +00:00
Chris Lattner
60fb5ecccc
more scalarization
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44608 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 07:45:02 +00:00
Chris Lattner
d36db029c8
scalarize vector binops
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44607 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 07:36:58 +00:00
Evan Cheng
018f9b020b
- Mark last use of a split interval as kill instead of letting spiller track it.
...
This allows an important optimization to be re-enabled.
- If all uses / defs of a split interval can be folded, give the interval a
low spill weight so it would not be picked in case spilling is needed (avoid
pushing other intervals in the same BB to be spilled).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44601 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 03:22:34 +00:00
Evan Cheng
d64b5c82b9
Add a argument to storeRegToStackSlot and storeRegToAddr to specify whether
...
the stored register is killed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44600 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-05 03:14:33 +00:00
Evan Cheng
dd86ce3d57
Remove a unsafe optimization. This fixes 401.bzip2.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44587 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-04 23:57:55 +00:00
Evan Cheng
35a3e4abb9
Spiller unfold optimization bug: do not clobber a reusable stack slot value unless it can be modified.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44575 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-04 19:19:45 +00:00
Chris Lattner
eb1819d1e5
Implement framework for scalarizing node results. This is sufficient
...
to codegen this:
define float @test_extract_elt(<1 x float> * %P) {
%p = load <1 x float>* %P
%R = extractelement <1 x float> %p, i32 0
ret float %R
}
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44570 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-04 07:48:46 +00:00
Chris Lattner
13c207b5c8
start providing framework for scalarizing vectors.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44569 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-04 07:29:51 +00:00
Evan Cheng
597d10d84f
Discard split intervals made empty due to folding.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44565 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-04 00:32:23 +00:00
Evan Cheng
e4b39007c9
Bug fixes.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44549 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-03 21:31:55 +00:00
Duncan Sands
a3355ffb3d
Rather than having special rules like "intrinsics cannot
...
throw exceptions", just mark intrinsics with the nounwind
attribute. Likewise, mark intrinsics as readnone/readonly
and get rid of special aliasing logic (which didn't use
anything more than this anyway).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44544 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-03 20:06:50 +00:00
Evan Cheng
31d43183a4
Typo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44532 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-03 10:00:00 +00:00
Evan Cheng
70306f8348
Update kill info for uses of split intervals.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44531 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-03 09:58:48 +00:00
Evan Cheng
aee4af68ae
Remove redundant foldMemoryOperand variants and other code clean up.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44517 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-02 08:30:39 +00:00
Evan Cheng
e3110d0825
Fix a bug where splitting cause some unnecessary spilling.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44482 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-01 04:42:39 +00:00
Evan Cheng
e62f97c094
Allow some reloads to be folded in multi-use cases. Specifically testl r, r -> cmpl [mem], 0.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44479 91177308-0d34-0410-b5e6-96231b3b80d8
2007-12-01 02:07:52 +00:00
Evan Cheng
cddbb83ea8
Do not fold reload into an instruction with multiple uses. It issues one extra load.
...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44467 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 21:23:43 +00:00
Devang Patel
962e0750a5
Provide a way to update DescGlobals cache directly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44446 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-30 00:51:33 +00:00
Evan Cheng
cb3c330d39
Do not lose rematerialization info when spilling already split live intervals.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44443 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 23:02:50 +00:00
Evan Cheng
1953d0cb7d
Fix a major performance issue with splitting. If there is a def (not def/use)
...
in the middle of a split basic block, create a new live interval starting at
the def. This avoid artifically extending the live interval over a number of
cycles where it is dead. e.g.
bb1:
= vr1204 (use / kill) <= new interval starts and ends here.
...
...
vr1204 = (new def) <= start a new interval here.
= vr1204 (use)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44436 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 10:12:14 +00:00
Evan Cheng
c3fc7d9ec9
Replace the odd kill# hack with something less fragile.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44434 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 09:49:23 +00:00
Evan Cheng
0cbb1164b3
Fixed various live interval splitting bugs / compile time issues.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44428 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 01:06:25 +00:00
Evan Cheng
c3868e04bf
Kill info update bug.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44427 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-29 01:05:47 +00:00
Duncan Sands
afa3b6da11
Add some convenience methods for querying attributes, and
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use them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44403 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 17:07:01 +00:00
Duncan Sands
0a488b320c
Add missing newlines at EOF.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44399 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 10:13:38 +00:00
Evan Cheng
cada245d06
Recover compile time regression.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44386 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-28 01:28:46 +00:00
Owen Anderson
e4ad9c70e4
Add MachineLoopInfo. This is not yet tested.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44384 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 22:47:08 +00:00
Nate Begeman
d73ab8884f
Support returning non-power-of-2 vectors to unblock some work
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44371 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 19:28:48 +00:00
Duncan Sands
dc024674ff
Fix PR1146: parameter attributes are longer part of
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the function type, instead they belong to functions
and function calls. This is an updated and slightly
corrected version of Reid Spencer's original patch.
The only known problem is that auto-upgrading of
bitcode files doesn't seem to work properly (see
test/Bitcode/AutoUpgradeIntrinsics.ll). Hopefully
a bitcode guru (who might that be? :) ) will fix it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44359 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 13:23:08 +00:00
Chris Lattner
b3d9cdb677
err, no really.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44352 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 06:14:32 +00:00
Chris Lattner
5ebfaa2c9d
don't depend on ADL.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44351 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-27 06:14:12 +00:00
Dan Gohman
77003040b2
Don't lower srem/urem X%C to X-X/C*C unless the division is actually
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optimized. This avoids creating illegal divisions when the combiner is
running after legalize; this fixes PR1815. Also, it produces better
code in the included testcase by avoiding the subtract and multiply
when the division isn't optimized.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44341 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-26 23:46:11 +00:00
Chris Lattner
c58d558a79
Implement expand support for MERGE_VALUEs that only produces one result.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44304 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 19:12:15 +00:00
Chris Lattner
87726ac0f9
Implement support for custom legalization in DAGTypeLegalizer::ExpandOperand.
...
Improve a comment.
Unbreak Duncan's carefully written path compression where I didn't realize
what was happening!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44301 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 18:11:42 +00:00
Chris Lattner
27a6c7380f
Several changes:
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1) Change the interface to TargetLowering::ExpandOperationResult to
take and return entire NODES that need a result expanded, not just
the value. This allows us to handle things like READCYCLECOUNTER,
which returns two values.
2) Implement (extremely limited) support in LegalizeDAG::ExpandOp for MERGE_VALUES.
3) Reimplement custom lowering in LegalizeDAGTypes in terms of the new
ExpandOperationResult. This makes the result simpler and fully
general.
4) Implement (fully general) expand support for MERGE_VALUES in LegalizeDAGTypes.
5) Implement ExpandOperationResult support for ARM f64->i64 bitconvert and ARM
i64 shifts, allowing them to work with LegalizeDAGTypes.
6) Implement ExpandOperationResult support for X86 READCYCLECOUNTER and FP_TO_SINT,
allowing them to work with LegalizeDAGTypes.
LegalizeDAGTypes now passes several more X86 codegen tests when enabled and when
type legalization in LegalizeDAG is ifdef'd out.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44300 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-24 07:07:01 +00:00
Duncan Sands
baccd5872e
Fix a bug in which node A is replaced by node B, but later
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node A gets back into the DAG again because it was hiding in
one of the node maps: make sure that node replacement happens
in those maps too.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44263 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-21 16:43:19 +00:00
Dale Johannesen
1d4ce2ab96
Fix .eh table linkage issues on Darwin. Some EH support
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for Darwin PPC, but it's not fully working yet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44258 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-20 23:24:42 +00:00
Chris Lattner
e400af83b3
ExpandUnalignedLoad doesn't handle vectors right at all apparently.
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Fix a couple of problems:
1. Don't assume the VT-1 is a VT that is half the size.
2. Treat vectors of FP in the vector path, not the FP path.
This has a couple of remaining problems before it will work with
the code in PR1811: the code below this change assumes that it can
use extload/shift/or to construct the result, which isn't right for
vectors.
This also doesn't handle vectors of 1 or vectors that aren't pow-2.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44243 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-19 21:38:03 +00:00
Chris Lattner
6c9c6800b8
Implement vector expand support for shuffle_vector. This fixes PR1811.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44242 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-19 21:16:54 +00:00
Chris Lattner
daf9bc8eee
Implement splitting of UNDEF nodes. This is the first step towards fixing PR1811
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44239 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-19 20:21:32 +00:00
Dan Gohman
089617d9e3
Add support in SplitVectorOp for remainder operators.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44233 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-19 15:15:03 +00:00
Nate Begeman
b348d18caf
Add support for vectors to int <-> float casts.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44204 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-17 03:58:34 +00:00
Evan Cheng
81a0382181
Live interval splitting:
...
When a live interval is being spilled, rather than creating short, non-spillable
intervals for every def / use, split the interval at BB boundaries. That is, for
every BB where the live interval is defined or used, create a new interval that
covers all the defs and uses in the BB.
This is designed to eliminate one common problem: multiple reloads of the same
value in a single basic block. Note, it does *not* decrease the number of spills
since no copies are inserted so the split intervals are *connected* through
spill and reloads (or rematerialization). The newly created intervals can be
spilled again, in that case, since it does not span multiple basic blocks, it's
spilled in the usual manner. However, it can reuse the same stack slot as the
previously split interval.
This is currently controlled by -split-intervals-at-bb.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44198 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-17 00:40:40 +00:00
Anton Korobeynikov
917c2a6ff2
Implement necessary bits for flt_rounds gcc builtin.
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Codegen bits and llvm-gcc support will follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44182 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15 23:25:33 +00:00
Nate Begeman
5db1afb462
Basic non-power-of-2 vector support
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44181 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15 21:15:26 +00:00
Duncan Sands
560a737e07
This assertion was bogus.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44167 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15 09:54:37 +00:00
Evan Cheng
5d446265c7
Fix a thinko in post-allocation coalescer.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44166 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15 08:13:29 +00:00
Bill Wendling
5b8318a1a4
Adding debug output during coalescing.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44154 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15 02:06:30 +00:00
Bill Wendling
87075caa18
Need to increment the iterator.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44153 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-15 00:40:48 +00:00
Anton Korobeynikov
9de1934099
Fix PIC jump table codegen on x86-32/linux. In fact, such thing should be applied
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to all targets uses GOT-relative offsets for PIC (Alpha?)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44108 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-14 09:18:41 +00:00
Evan Cheng
c498b0281f
Clean up sub-register implementation by moving subReg information back to
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MachineOperand auxInfo. Previous clunky implementation uses an external map
to track sub-register uses. That works because register allocator uses
a new virtual register for each spilled use. With interval splitting (coming
soon), we may have multiple uses of the same register some of which are
of using different sub-registers from others. It's too fragile to constantly
update the information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44104 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-14 07:59:08 +00:00
Owen Anderson
42f9e96e97
Run computeDomForest() on the set of registers that need to be tested for
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interference.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44064 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 20:13:24 +00:00
Owen Anderson
17b1418bea
Preserve LiveVariables when doing critical edge splitting.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44063 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 20:04:45 +00:00
Dale Johannesen
b97aec663b
Add parameter to getDwarfRegNum to permit targets
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to use different mappings for EH and debug info;
no functional change yet.
Fix warning in X86CodeEmitter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44056 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 19:13:01 +00:00
Bill Wendling
0f8d9c04d9
Unify CALLSEQ_{START,END}. They take 4 parameters: the chain, two stack
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adjustment fields, and an optional flag. If there is a "dynamic_stackalloc" in
the code, make sure that it's bracketed by CALLSEQ_START and CALLSEQ_END. If
not, then there is the potential for the stack to be changed while the stack's
being used by another instruction (like a call).
This can only result in tears...
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44037 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-13 00:44:25 +00:00
Owen Anderson
35e2dba672
Break critical edges coming into blocks with PHI nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44019 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-12 17:27:27 +00:00
Evan Cheng
f2fbca68f8
Refactor some code.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44010 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-12 06:35:08 +00:00
Owen Anderson
fe0c882e5a
As Chris and Evan pointed out, BreakCriticalMachineEdges doesn't really need
...
to be a pass of its own. Instead, move it out into a helper method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44002 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-12 01:05:09 +00:00
Hartmut Kaiser
7168be956d
Fixed a strange construct. Please review.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43960 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 19:59:00 +00:00
Duncan Sands
fd617d0143
Move MinAlign to MathExtras.h.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43944 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 13:41:39 +00:00
Duncan Sands
c6fa170b4d
Fix some load/store logic that would be wrong for
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apints on big-endian machines if the bitwidth is
not a multiple of 8. Introduce a new helper,
MVT::getStoreSizeInBits, and use it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43934 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 08:57:19 +00:00
Duncan Sands
f6bd0ce4c9
Add terminating newline.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43933 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 08:30:21 +00:00
Evan Cheng
cc41586b9d
Much improved pic jumptable codegen:
...
Then:
call "L1$pb"
"L1$pb":
popl %eax
...
LBB1_1: # entry
imull $4, %ecx, %ecx
leal LJTI1_0-"L1$pb"(%eax), %edx
addl LJTI1_0-"L1$pb"(%ecx,%eax), %edx
jmpl *%edx
.align 2
.set L1_0_set_3,LBB1_3-LJTI1_0
.set L1_0_set_2,LBB1_2-LJTI1_0
.set L1_0_set_5,LBB1_5-LJTI1_0
.set L1_0_set_4,LBB1_4-LJTI1_0
LJTI1_0:
.long L1_0_set_3
.long L1_0_set_2
Now:
call "L1$pb"
"L1$pb":
popl %eax
...
LBB1_1: # entry
addl LJTI1_0-"L1$pb"(%eax,%ecx,4), %eax
jmpl *%eax
.align 2
.set L1_0_set_3,LBB1_3-"L1$pb"
.set L1_0_set_2,LBB1_2-"L1$pb"
.set L1_0_set_5,LBB1_5-"L1$pb"
.set L1_0_set_4,LBB1_4-"L1$pb"
LJTI1_0:
.long L1_0_set_3
.long L1_0_set_2
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43924 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 01:32:10 +00:00
Evan Cheng
2dfdefd282
Didn't mean to check these in.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43923 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 01:28:33 +00:00
Evan Cheng
7da8f399bf
Bug fix. Passive nodes are not in SUnitMap.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43922 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-09 01:27:11 +00:00
Owen Anderson
0823cea34a
This preserves critical edge breaking.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43911 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-08 22:23:57 +00:00
Owen Anderson
d195ce1fb6
Make BreakCriticalMachineEdges available as a pass that can be depended on.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43910 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-08 22:20:23 +00:00
Evan Cheng
4471194d69
If both parts of smul_lohi, etc. are used, don't simplify. If only one part is used, try simplify it.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43888 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-08 09:25:29 +00:00
Owen Anderson
01f43a4d55
Add the majority of machine-level critical edge breaking pass. Most of this was written by Fernando, cleanup and updating to TOT by me.
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This still needs a bit of work, particularly to handle jump tables properly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43885 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-08 07:55:43 +00:00
Owen Anderson
14b3fb7805
Take another stab at getting isLiveIn() and isLiveOut() right.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43869 91177308-0d34-0410-b5e6-96231b3b80d8
2007-11-08 01:32:45 +00:00