Chris Lattner
fabcb7abc5
Teach the dag selectors to select InlineAsm nodes.
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Aren't we happy the pattern selectors are almost all gone?
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25666 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-26 23:08:55 +00:00
Evan Cheng
1feeeecf4c
Another folding problem: if a node r/w chain or flag, don't fold it if it
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has already been selected. The number of use check is not strong enough since
a node can be replaced with newly created target node. e.g. If the original
node has two uses, when it is selected for one of the uses it is replaced with
another. Each node now has a single use but isel still should not fold it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25651 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-26 19:13:45 +00:00
Evan Cheng
8eab3608de
Add a FIXME comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25635 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-26 02:13:31 +00:00
Evan Cheng
545977371a
Incoming (and optional) flag bugs. They may be embedded inside a inner node of
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a pattern. Also, nodes which take incoming flag should not be folded if it has
more than one use.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25627 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-26 00:22:25 +00:00
Evan Cheng
9789aaad63
Fix an optional in flag bug.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25590 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-24 20:46:50 +00:00
Evan Cheng
18667c4545
Optional InFlag was not being included in node.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25588 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-24 20:07:38 +00:00
Evan Cheng
76356d9594
Prevent folding of a node with multiple uses if the node already folds a load!
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Here is an example where the load ended up being done twice:
%A = global uint 0
uint %test(uint %B, ubyte %C) {
%tmp = load uint *%A;
%X = shl uint %tmp, ubyte %C
%Cv = sub ubyte 32, %C
%Y = shr uint %B, ubyte %Cv
%Z = or uint %Y, %X
store uint %Z, uint* %A
ret uint %Z
}
==>
subl $4, %esp
movl %ebx, (%esp)
movl 8(%esp), %edx
movl A, %eax
movb 12(%esp), %bl
movb %bl, %cl
shldl %cl, %edx, %eax
movb %bl, %cl
shldl %cl, %edx, A
movl (%esp), %ebx
addl $4, %esp
ret
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25471 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-20 01:11:03 +00:00
Evan Cheng
823b752d75
Bug fix. Flag operand number may be calculated incorrectly.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25465 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-19 21:57:10 +00:00
Evan Cheng
7419de89fb
Use pattern information to determine whether the use expects this
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instruction to produce a result. e.g MUL8m, the instruction does not
produce a explicit result. However it produces an implicit result in
AL which would be copied to a temp. The root operator of the matching
pattern is a mul so the use would expect it to produce a result.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25458 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-19 10:12:58 +00:00
Evan Cheng
b4ad33c4ae
Prevent unnecessary CopyToReg when the same HW register appears in two spots
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in the pattern.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25437 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-19 01:55:45 +00:00
Chris Lattner
09fb7d4dad
fix a broken comment
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25411 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-17 21:31:18 +00:00
John Criswell
d788124317
Regenerated the Lex and Yacc output files on Linux. It seems that our
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Linux machines don't like the source code generated on MacOS X for some
reason.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25394 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-17 17:01:34 +00:00
Evan Cheng
57c517d30c
Emit a type matching check for ComplexPatterns.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25392 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-17 07:36:41 +00:00
Evan Cheng
37e9005db3
Type inferencing bug
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25337 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-15 10:04:45 +00:00
Evan Cheng
f805c2ed7f
Allow transformation from GlobalAddress to TargetGlobalAddress and
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ExternalSymbol to TargetExternalSymbol.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25252 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-12 19:35:54 +00:00
Evan Cheng
bb48e33bcd
GlobalAddress -> TargetGlobalAddress; ExternalSymbol -> TargetExternalSymbol
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25245 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-12 07:54:57 +00:00
Evan Cheng
b2c6d4957a
Some minor fixes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25227 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-11 22:16:13 +00:00
Chris Lattner
8020a5233c
Always select target registers to themselves
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25218 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-11 19:52:27 +00:00
Chris Lattner
7893f13ad6
Emit an error instead of an assertion if trying to do bogus things in result patterns.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25194 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-11 01:33:49 +00:00
Robert Bocchino
b52ee7f5ff
Added support for the extractelement operation.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25181 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-10 19:05:34 +00:00
Evan Cheng
51fecc80f7
* Remove instruction fields hasInFlag / hasOutFlag and added SNDPInFlag and
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SNDPOutFlag to DAG nodes. These properties do not belong to target specific
instructions.
* Added DAG node property SNDPOptInFlag. It's same as SNDPInFlag except it's
optional. Used by ret / call, etc.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25154 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-09 18:27:06 +00:00
Evan Cheng
4a7c284b35
Pattern complexity calculation fix.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25133 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-06 22:19:44 +00:00
Evan Cheng
e1050d616b
Tweak pattern complexity calc.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25122 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-06 02:30:23 +00:00
Evan Cheng
1cf6db2d3b
Bug fix wrt chain operand.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25115 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-06 00:41:12 +00:00
Jeff Cohen
60e9187a90
Replace fix with one less disruptive to the original code.
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Also note that GCC 4.1 also correctly flags the syntax error.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25076 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04 03:23:30 +00:00
Jeff Cohen
f356d70ec3
Tblgen was generating syntactically illegal C++ code like:
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SDOperand Tmp0,Tmp1,Tmp2,Tmp3,;
GCC has a bug (24907) in which is fails to catch this, but VC++ correctly
notes its illegality, so tblgen must be taught to only generate legal C++.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25075 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04 03:15:19 +00:00
Chris Lattner
11966a0179
Remove obsolete comment, make things look a bit nicer
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25070 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04 00:32:01 +00:00
Chris Lattner
602f692461
reduce stack usage of the recursive SelectCode function by out-lining each
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case of the switch statement into its own method.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25069 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-04 00:25:00 +00:00
Chris Lattner
4e3c8e516f
Remove my previous ugly hack that tries to reduce the stack space usage
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of SelectCode to make way for a better solution.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25068 91177308-0d34-0410-b5e6-96231b3b80d8
2006-01-03 22:55:16 +00:00
Duraid Madina
d47ae09dab
HP-UX DVDs are crunchy and good to eat
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25052 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-30 16:41:48 +00:00
Duraid Madina
42d24c71df
almost got the HP-UX tester up.. :)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25051 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-30 14:56:37 +00:00
Nate Begeman
b73628b5ab
Add support for generating v4i32 altivec code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25046 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-30 00:12:56 +00:00
Duraid Madina
12f7578214
This gets most of the backends building with HP HappyC++.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25029 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-27 10:56:22 +00:00
Evan Cheng
2b4ea795a2
Added field noResults to Instruction.
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Currently tblgen cannot tell which operands in the operand list are results so
it assumes the first one is a result. This is bad. Ideally we would fix this
by separating results from inputs, e.g. (res R32:$dst),
(ops R32:$src1, R32:$src2). But that's a more distruptive change. Adding
'let noResults = 1' is the workaround to tell tblgen that the instruction does
not produces a result. It works for now since tblgen does not support
instructions which produce multiple results.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25017 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-26 09:11:45 +00:00
Duraid Madina
6fb9a84e79
more standards-compliance stuff
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25014 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-26 05:08:55 +00:00
Andrew Lenharth
330851a8f6
support targetexternalsym
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25005 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-24 23:36:59 +00:00
Evan Cheng
7b05bd5814
* Support for hasInFlag and hasOutFlag (on instructions). Remove nameless FLAG
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support which is fragile.
* Fixed a number of bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24996 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-23 22:11:47 +00:00
Chris Lattner
7a8054f5f2
silence some bogus gcc warnings
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24962 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-22 20:37:36 +00:00
Evan Cheng
3a217f3e53
Attempt to fix a crash on WIN32.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24936 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-22 02:35:21 +00:00
Evan Cheng
9793888be8
* Added support for FLAG - a special nameless flag register. Can be used as
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either an operand or a result.
* Fixed some more flag / chain bugs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24933 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-22 02:24:50 +00:00
Evan Cheng
87bddeb2af
Allows instructions which no explicit operands. e.g. X86 RET which has but
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an implicit flag operand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24916 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-21 20:20:49 +00:00
Chris Lattner
4e6a1d2433
Eliminate some GCC warnings from the generated code
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24897 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-21 05:31:05 +00:00
Evan Cheng
5fb5e10cdc
Fix the semantic of Requires<[cond]> to mean if (!cond) goto PXXFail;
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24883 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20 20:08:01 +00:00
Chris Lattner
2f0f9a6973
This ugly patch works around a GCC bug where it is compiling SelectCode to
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use too much stack space, overflowing the stack for large functions. Instead
of emitting new SDOperands in each match block, we emit some common ones at
the top of SelectCode then reuse them when possible.
This reduces the stack size of SelectCode from 28K to 21K. Note that GCC
compiles it to 512 bytes :-/
I've filed GCC PR 25505 to track this.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24882 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20 19:41:03 +00:00
Evan Cheng
4fba28116c
Now support instructions with implicit write to non-flag registers.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24878 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20 07:37:41 +00:00
Evan Cheng
e08705134f
Lefted out a fix in the previous check in.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24873 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-20 00:06:17 +00:00
Evan Cheng
f9fc25db32
Fix another bug related to chain / flag.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24868 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-19 22:40:04 +00:00
Evan Cheng
1b80f4d2c6
Fixes for a number of bugs: save flag results in CodeGenMap, folded chains
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may not all have ResNo == 0.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24858 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-19 07:18:51 +00:00
Chris Lattner
5216c698de
Handle basic block nodes
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24833 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-18 21:05:44 +00:00
Chris Lattner
dc464de9b0
More fixes for Selection of copyto/fromreg with a flag
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24829 91177308-0d34-0410-b5e6-96231b3b80d8
2005-12-18 15:45:51 +00:00