Chris Lattner
1e81b9e511
Fold single use token factor nodes into other token factor nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19701 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 19:10:54 +00:00
Chris Lattner
ec39a45bdb
Realize the individual pieces of an expanded copytoreg/store/load are
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independent of each other.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19700 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 18:02:17 +00:00
Chris Lattner
e34b396ab7
Implement a way of expanding shifts. This applies to targets that offer
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select operations or to shifts that are by a constant. This automatically
implements (with no special code) all of the special cases for shift by 32,
shift by < 32 and shift by > 32.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19679 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 04:19:40 +00:00
Chris Lattner
d5d5682512
Zero is cheaper than sign extend.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19675 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 21:57:59 +00:00
Chris Lattner
47e9223e06
Fix some fixmes (promoting bools for select and brcond), fix promotion
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of zero and sign extends.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19671 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 19:27:06 +00:00
Chris Lattner
ef5cd1d3cf
Teach legalize to promote copy(from|to)reg, instead of making the isel pass
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do it. This results in better code on X86 for floats (because if strict
precision is not required, we can elide some more expensive double -> float
conversions like the old isel did), and allows other targets to emit
CopyFromRegs that are not legal for arguments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19668 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 17:54:55 +00:00
Chris Lattner
82fbfb6984
Teach legalize to promote SetCC results.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19657 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 02:59:52 +00:00
Chris Lattner
f30b73b1c6
Allow setcc operations to have nonbool types.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19656 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-18 02:52:03 +00:00
Chris Lattner
8ac532c55e
Implement legalize of call nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19617 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 19:46:48 +00:00
Chris Lattner
55ba8fba75
Revamp supported ops. Instead of just being supported or not, we now keep
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track of how to deal with it, and provide the target with a hook that they
can use to legalize arbitrary operations in arbitrary ways.
Implement custom lowering for a couple of ops, implement promotion for select
operations (which x86 needs).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19613 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 07:29:19 +00:00
Chris Lattner
f8161d83f0
Implement some more missing promotions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19606 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 05:06:12 +00:00
Chris Lattner
9467497ae2
Clarify assertion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19597 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 02:23:34 +00:00
Chris Lattner
71c42a0190
Move some information into the TargetLowering object.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19583 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 01:11:45 +00:00
Chris Lattner
1713e73b8a
legalize a bunch of operations that I missed.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19580 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 00:38:00 +00:00
Chris Lattner
ff3e50cc39
Fix some serious bugs in promotion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19578 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 00:17:42 +00:00
Chris Lattner
8b6fa22e72
Implement promotion of a whole bunch more operators. I think that this is
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basically everything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19576 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 22:16:26 +00:00
Chris Lattner
45b8caf1c5
Add support for legalizing FP_ROUND_INREG, SIGN_EXTEND_INREG, and
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ZERO_EXTEND_INREG for targets that don't support them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19573 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 07:15:18 +00:00
Chris Lattner
0f69b29108
Add support for promoting ADD/MUL.
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Add support for new SIGN_EXTEND_INREG, ZERO_EXTEND_INREG, and FP_ROUND_INREG operators.
Realize that if we do any promotions, we need to iterate SelectionDAG
construction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19569 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 06:18:18 +00:00
Chris Lattner
03c8546ec5
Add intitial support for promoting some operators.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19565 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-15 05:21:40 +00:00
Chris Lattner
69a52155d2
Adjust to CopyFromReg changes, implement deletion of truncating/extending
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stores/loads.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19562 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-14 22:38:01 +00:00
Chris Lattner
2ee743ff9b
Start implementing truncating stores and extending loads.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19559 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-14 22:08:15 +00:00
Chris Lattner
18c2f13e0f
Add new ImplicitDef node, rename CopyRegSDNode class to RegSDNode.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19535 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 20:50:02 +00:00
Chris Lattner
a385e9b20f
Legalize new node, add assertion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19527 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-13 17:59:25 +00:00
Chris Lattner
2dad454af6
Fix sign extend to long. When coming from sbyte, we used to generate:
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movsbl 4(%esp), %eax
movl %eax, %edx
sarl $7, %edx
Now we generate:
movsbl 4(%esp), %eax
movl %eax, %edx
sarl $31, %edx
Which is right.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19515 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-12 18:19:52 +00:00
Reid Spencer
3bfbf4ea99
Shut up warnings with GCC 3.4.3 about uninitialized variables.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19512 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-12 14:53:45 +00:00
Chris Lattner
64da653ba9
Squelch optimized warning.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19475 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 17:46:49 +00:00
Chris Lattner
e1bd822ddb
Teach legalize to lower MEMSET/MEMCPY/MEMMOVE operations if the target
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does not support them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19465 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-11 05:57:22 +00:00
Chris Lattner
6b7598b995
Lower to the correct functions. This fixes FreeBench/fourinarow
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19436 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-10 21:02:37 +00:00
Chris Lattner
38d6be5d49
Fix a bug legalizing call instructions (make sure to remember all result
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values), and eliminate some switch statements.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19417 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 19:43:23 +00:00
Chris Lattner
513e52ec4e
Fix a minor bug legalizing dynamic_stackalloc. This allows us to compile
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std::__pad<wchar_t, std::char_traits<wchar_t> >::_S_pad(std::ios_base&, wchar_t, wchar_t*, wchar_t const*, int, int, bool)
from libstdc++
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19416 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 19:07:54 +00:00
Chris Lattner
fa404e8a76
Teach legalize to deal with DYNAMIC_STACKALLOC (aka a dynamic llvm alloca)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19415 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 19:03:49 +00:00
Chris Lattner
e3304a3d24
Tighten up assertions.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19397 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 20:35:13 +00:00
Chris Lattner
f26bc8ef48
Silence VS warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19384 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 19:52:31 +00:00
Chris Lattner
4e6c746899
Implement handling of most long operators through libcalls.
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Fix a bug legalizing "ret (Val,Val)"
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19375 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 19:27:05 +00:00
Chris Lattner
ae0aacb833
Add support for FP->INT conversions and back.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19369 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 08:08:56 +00:00
Chris Lattner
5d2c6c784b
Implement the 'store FPIMM, Ptr' -> 'store INTIMM, Ptr' optimization for
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all targets.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19366 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 06:25:56 +00:00
Chris Lattner
b00a6425de
Add support for truncating integer casts from long.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19358 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 22:37:48 +00:00
Chris Lattner
8afc48e44a
Fix a bug in load expansion legalization and ret legalization. This fixes
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CodeGen/Generic/select.ll:castconst.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19357 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 22:28:47 +00:00
Chris Lattner
c7af17923e
Legalize unconditional branches too
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19356 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 22:12:08 +00:00
Chris Lattner
7cc4777a26
Implement support for long GEP indices on 32-bit archs and support for
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int GEP indices on 64-bit archs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19354 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 21:56:57 +00:00
Chris Lattner
03c0cf822e
implement legalization of a bunch more operators.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19352 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 21:45:56 +00:00
Chris Lattner
fad71ebe1e
Fix another bug legalizing calls!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19350 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 21:35:32 +00:00
Chris Lattner
ebda942efc
Fix a bug legalizing calls
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19348 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 21:34:13 +00:00
Chris Lattner
62fd269c14
After legalizing a DAG, delete dead nodes to save space.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19346 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 21:09:37 +00:00
Chris Lattner
c18ae4cb6a
Teach legalize how to handle condbranches
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19339 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 08:19:42 +00:00
Chris Lattner
3e928bbd61
Initial implementation of the DAG legalization. This still has a long way
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to go, but it does work for some non-trivial cases now.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19329 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 07:47:09 +00:00