Evan Cheng
5beaacc189
Fix a mis-leading comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28350 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-17 18:08:20 +00:00
Chris Lattner
6cacaee724
There is now a default impl of this method
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28336 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-16 22:52:11 +00:00
Andrew Lenharth
dae9cbe8d4
Move this code to a common place
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28329 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-16 17:42:15 +00:00
Chris Lattner
a0d513ba75
Add some new methods for computing sign bit information.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28144 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-06 09:26:22 +00:00
Owen Anderson
a69571c799
Refactor TargetMachine, pushing handling of TargetData into the target-specific subclasses. This has one caller-visible change: getTargetData() now returns a pointer instead of a reference.
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This fixes PR 759.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28074 91177308-0d34-0410-b5e6-96231b3b80d8
2006-05-03 01:29:57 +00:00
Evan Cheng
c313c66a88
Added a virtual method isVectorClearMaskLegal to TLI. It is similar to
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isShuffleMaskLegal, used to determine if it makes sense to turn a
"vector clear" (e.g. pand V, <0, -1, 0, -1> to a shuffle of the vector and
a zero vector.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27873 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-20 08:54:13 +00:00
Chris Lattner
b878151b1e
Provide a default impl of LowerArguments
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27605 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-12 16:21:12 +00:00
Chris Lattner
c45420ddd2
Move isShuffleLegal from TLI to Legalize.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27398 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-04 17:21:22 +00:00
Chris Lattner
e6bfffbae2
Allow targets to have fine grained control over which types various ops get
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promoted to, if they desire.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27389 91177308-0d34-0410-b5e6-96231b3b80d8
2006-04-04 00:25:10 +00:00
Chris Lattner
79227e2906
Modify the TargetLowering::getPackedTypeBreakdown method to also return the
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unpromoted element type.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27273 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-31 00:46:36 +00:00
Chris Lattner
00cc494595
Add a method useful for decimating vectors.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27269 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-31 00:28:23 +00:00
Evan Cheng
ca6e8eafd2
Added a ValueType operand to isShuffleMaskLegal(). For now, x86 will not do
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64-bit vector shuffle.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26964 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-22 22:07:06 +00:00
Chris Lattner
dc26e32ec7
Add some helper methods
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26882 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-20 00:55:52 +00:00
Evan Cheng
714554d707
Added a way for TargetLowering to specify what values can be used as the
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scale component of the target addressing mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26802 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-16 21:47:42 +00:00
Evan Cheng
30b37b5f29
Add LSR hooks.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26740 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-13 23:18:16 +00:00
Chris Lattner
1566d18fe2
custom lowered nodes are legal too
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26561 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-05 23:49:19 +00:00
Evan Cheng
33143dce15
Number of NodeTypes now exceeds 128.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26503 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-03 06:58:59 +00:00
Chris Lattner
00ffed0468
Add interfaces for targets to provide target-specific dag combiner optimizations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26442 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-01 04:52:55 +00:00
Evan Cheng
bf57e1f456
Missing a cast previously.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26434 91177308-0d34-0410-b5e6-96231b3b80d8
2006-03-01 00:58:54 +00:00
Chris Lattner
5ee3e14127
Add C_Memory operand type
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26344 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-24 01:10:14 +00:00
Chris Lattner
410354fe0c
Make the LLVM headers "-ansi -pedantic -Wno-long-long" clean.
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Patch by Martin Partel!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26313 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-22 16:23:43 +00:00
Chris Lattner
1efa40f6a4
split register class handling from explicit physreg handling.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26308 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-22 00:56:39 +00:00
Chris Lattner
aba3b13fb3
Pass in a value type to getRegForInlineAsmConstraint, allowing targets to
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select different sets of registers depending on the type requested.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26304 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-21 23:10:29 +00:00
Nate Begeman
70804d3e14
Fix a nit sabre noticed
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26262 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-17 18:06:19 +00:00
Nate Begeman
368e18d56a
Rework the SelectionDAG-based implementations of SimplifyDemandedBits
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and ComputeMaskedBits to match the new improved versions in instcombine.
Tested against all of multisource/benchmarks on ppc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26238 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-16 21:11:51 +00:00
Evan Cheng
a03a5dc7ce
Rename maxStoresPerMemSet to maxStoresPerMemset, etc.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26174 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-14 08:38:30 +00:00
Chris Lattner
eac707f702
getConstraintType should be virtual.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26041 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-07 20:13:44 +00:00
Chris Lattner
c991cf58aa
Add some methods for inline asm support.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25950 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-04 02:12:09 +00:00
Nate Begeman
de99629e2a
Add a framework for eliminating instructions that produces undemanded bits.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25945 91177308-0d34-0410-b5e6-96231b3b80d8
2006-02-03 22:24:05 +00:00
Chris Lattner
cb0b555663
Clear the OpAction field before setting it. This allows a target to set
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an instruction operation action to Expand, then set it to Legal later.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25812 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-30 06:09:03 +00:00
Chris Lattner
553d8007ad
Move MaskedValueIsZero from the DAGCombiner to the TargetLowering interface,
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making isMaskedValueZeroForTargetNode simpler, and useable from other parts
of the compiler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25802 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-30 04:08:18 +00:00
Chris Lattner
030dae5bce
Pass the address of the main MaskedValueIsZero function to allow recursion.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25797 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-30 03:48:36 +00:00
Chris Lattner
e3bd778e4d
Clean up the interface to ValueTypeActions, allowing Legalize to use a copy
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of it more cleanly. Double the size of OpActions, allowing it to hold actions
for any VT.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25782 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-29 08:40:37 +00:00
Chris Lattner
7e871b28a2
remove this method I just added, now is not the time.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25729 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-28 03:43:33 +00:00
Chris Lattner
4f16e70faa
add a new callback
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25727 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-28 03:37:03 +00:00
Nate Begeman
0aed7840ec
Implement Promote for VAARG, and allow it to be custom promoted for people
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who don't want the default behavior (Alpha).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25726 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-28 03:14:31 +00:00
Nate Begeman
ee625573b5
Remove TLI.LowerReturnTo, and just let targets custom lower ISD::RET for
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the same functionality. This addresses another piece of bug 680. Next,
on to fixing Alpha VAARG, which I broke last time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25696 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-27 21:09:22 +00:00
Chris Lattner
bc9ae377d9
Add a method for inline asm support.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25656 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-26 20:27:33 +00:00
Nate Begeman
acc398c195
First part of bug 680:
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Remove TLI.LowerVA* and replace it with SDNodes that are lowered the same
way as everything else.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25606 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-25 18:21:52 +00:00
Evan Cheng
d854b62afa
Add a enum to specify target scheduling preference: SchedulingForLatency or
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SchedulingForRegPressure. Added corresponding methods to set / get the value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25598 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-25 09:09:02 +00:00
Chris Lattner
d90ef9ef2b
Provide an interface for Targets to specify their stack pointer register
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for llvm.stacksave/restore.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25275 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-13 17:47:52 +00:00
Jeff Cohen
9337de8651
Oh oh... Unix is case sensitive.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24928 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-22 01:46:59 +00:00
Jeff Cohen
f31a60cd71
Make it compile with VC++.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24927 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-22 01:44:51 +00:00
Evan Cheng
c85b33f264
Added TargetLowering::isMaskedValueZeroForTargetNode() declaration.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24923 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-21 23:15:41 +00:00
Evan Cheng
7226158d7e
Added a hook to print out names of target specific DAG nodes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24877 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20 06:22:03 +00:00
Nate Begeman
6a648614e8
Add the majority of the vector machien value types we expect to support,
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and make a few changes to the legalization machinery to support more than
16 types.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24511 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-29 05:45:29 +00:00
Nate Begeman
395cba8d41
Teach the type lowering code about turning packed types into vector types.
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Next step: generating vector dag nodes, and legalizing them into scalar
code.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24404 91177308-0d34-0410-b5e6-96231b3b80d8
2005-11-17 21:44:42 +00:00
Nate Begeman
405e3ecb56
Invert the TargetLowering flag that controls divide by consant expansion.
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Add a new flag to TargetLowering indicating if the target has really cheap
signed division by powers of two, make ppc use it. This will probably go
away in the future.
Implement some more ISD::SDIV folds in the dag combiner
Remove now dead code in the x86 backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23853 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-21 00:02:42 +00:00
Nate Begeman
d32d4a93f6
Enable targets to say that integer divide is expensive, which will trigger
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an upcoming optimization in the DAG Combiner.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23834 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-20 02:14:14 +00:00
Nate Begeman
4a95945fa5
Add the ability to lower return instructions to TargetLowering. This
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allows us to lower legal return types to something else, to meet ABI
requirements (such as that i64 be returned in two i32 regs on Darwin/ppc).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23802 91177308-0d34-0410-b5e6-96231b3b80d8
2005-10-18 23:23:37 +00:00
Chris Lattner
5e93fbe68c
Add a new flag for targets where setjmp/longjmp saves/restores the signal mask,
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and _setjmp/_longjmp should be used instead (for llvm.setjmp/llvm.longjmp).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23479 91177308-0d34-0410-b5e6-96231b3b80d8
2005-09-27 22:13:36 +00:00
Reid Spencer
0f9beca707
Change the names of member variables per Chris' instructions, and document
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them more clearly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23118 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-27 19:09:02 +00:00
Chris Lattner
050967c4d1
add some forward defs
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23100 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-26 21:06:40 +00:00
Chris Lattner
8fae46675d
spell this right!
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23097 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-26 20:53:44 +00:00
Chris Lattner
a8fbee6f09
Add a hook
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23096 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-26 20:53:09 +00:00
Chris Lattner
de6a4bc058
rename hasNativeSupportFor* -> is(Operation|Type)Legal.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23011 91177308-0d34-0410-b5e6-96231b3b80d8
2005-08-24 16:34:59 +00:00
Jeff Cohen
9eb59ec548
Eliminate tabs and trailing spaces.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22520 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-27 05:53:44 +00:00
Reid Spencer
a0f5bf306c
For: memory operations -> stores
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This is the first incremental patch to implement this feature. It adds no
functionality to LLVM but setup up the information needed from targets in
order to implement the optimization correctly. Each target needs to specify
the maximum number of store operations for conversion of the llvm.memset,
llvm.memcpy, and llvm.memmove intrinsics into a sequence of store operations.
The limit needs to be chosen at the threshold of performance for such an
optimization (generally smallish). The target also needs to specify whether
the target can support unaligned stores for multi-byte store operations.
This helps ensure the optimization doesn't generate code that will trap on
an alignment errors.
More patches to follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22468 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-19 04:52:44 +00:00
Chris Lattner
e64e72b794
Make several cleanups to Andrews varargs change:
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1. Pass Value*'s into lowering methods so that the proper pointers can be
added to load/stores from the valist
2. Intrinsics that return void should only return a token chain, not a token
chain/retval pair.
3. Rename LowerVAArgNext -> LowerVAArg, because VANext is long gone.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22338 91177308-0d34-0410-b5e6-96231b3b80d8
2005-07-05 19:57:53 +00:00
Andrew Lenharth
f542821385
header file changes for varargs
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22253 91177308-0d34-0410-b5e6-96231b3b80d8
2005-06-18 18:31:30 +00:00
Chris Lattner
bc83996b31
Pass the dag into LowerOperation
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22005 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-14 05:51:05 +00:00
Chris Lattner
adf6a965a3
Add an isTailCall flag to LowerCallTo
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21958 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-13 18:50:42 +00:00
Chris Lattner
b15a8f5f8c
LowerCallTo now takes the cc to use
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21901 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 19:57:08 +00:00
Chris Lattner
39d7f8f338
Add a little hook
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21883 91177308-0d34-0410-b5e6-96231b3b80d8
2005-05-12 02:02:21 +00:00
Misha Brukman
34695381d6
Remove trailing whitespace
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21412 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-21 20:59:05 +00:00
Chris Lattner
7b5987d56e
Allow targets which produce setcc results in non-MVT::i1 registers to describe
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what the contents of the top bits of these registers are, in the common cases
of targets that sign and zero extend the results.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21145 91177308-0d34-0410-b5e6-96231b3b80d8
2005-04-07 19:41:18 +00:00
Nate Begeman
5ebc3dbc1c
Change LowerCallTo to take a boolean isVarArg argument. This is needed
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by the PowerPC backend, and probably others in the future.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20843 91177308-0d34-0410-b5e6-96231b3b80d8
2005-03-26 01:30:30 +00:00
Chris Lattner
6147a7aa17
Move all data members to the end of the class.
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Add a hook to find out how the target handles shift amounts that are out of
range. Either they are undefined (the default), they mask the shift amount
to the size of the register (X86, Alpha, etc), or they extend the shift (PPC).
This defaults to undefined, which is conservatively correct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19676 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-19 03:36:03 +00:00
Chris Lattner
6ae76fcc06
Add comments
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Add fields to hold the result type of setcc operations and shift amounts.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19618 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 23:59:30 +00:00
Chris Lattner
7e5ee40979
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.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19609 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 07:27:49 +00:00
Chris Lattner
bb97d81cc8
Move some information out of LegalizeDAG into the generic Target interface.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19581 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-16 01:10:58 +00:00
Chris Lattner
f19ae7df65
Add interfaces to lower varargs and return/frame address intrinsics.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19406 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-09 00:00:31 +00:00
Chris Lattner
d4b1c9a938
Make LowerCallTo more generic and useful.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19373 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-08 19:25:39 +00:00
Chris Lattner
75c2d0a351
First draft of a new Target interface
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19323 91177308-0d34-0410-b5e6-96231b3b80d8
2005-01-07 07:44:22 +00:00