Devang Patel
37963556e3
Use cast instead of dyn_cast.
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Update test to use multiple return value directly, instead of relying on -sretpromotion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47907 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 21:45:28 +00:00
Devang Patel
a9fe8bb3b6
Filter nested structs
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47906 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 21:32:09 +00:00
Devang Patel
dc00d42bb1
Handle multiple return values.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47904 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 21:15:15 +00:00
Devang Patel
96f9cc02e3
Use appropriate index to get the result value.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47897 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 19:22:54 +00:00
Devang Patel
544b92bb3c
Skip sret attribute while preparing attribute list for
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new function and new call sites.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47896 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 19:12:58 +00:00
Devang Patel
df1d15c52e
Increment counter that keeps track of total number of sret promoted.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47892 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 17:48:11 +00:00
Devang Patel
d0f4103a31
Skip declarations.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47890 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 17:47:06 +00:00
Devang Patel
74382c3453
Process externally visible functions also. Later on code generator will do the right thing.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47889 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 17:46:26 +00:00
Devang Patel
98a6e067df
Collect statistics.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47888 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-04 17:44:37 +00:00
Devang Patel
41e2397b72
s/isReturnStruct()/hasStructRetAttr()/g
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47857 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-03 21:46:28 +00:00
Devang Patel
2a4821b2b3
Preserve paramater attributes.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47847 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-03 18:36:03 +00:00
Chris Lattner
b822e70f36
allow specified inline threshold to be negative, as the value is
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itself sometimes negative.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47786 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-01 08:09:51 +00:00
Devang Patel
c45b5d9f66
Fix cut-n-pasto.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47777 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29 23:41:13 +00:00
Devang Patel
ca891ecf91
Add pass to promote sret.
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This pass transforms
%struct._Point = type { i32, i32, i32, i32, i32, i32 }
define internal void @foo(%struct._Point* sret %agg.result)
into
%struct._Point = type { i32, i32, i32, i32, i32, i32 }
define internal %struct._Point @foo()
This pass updates foo() clients appropriately to use
getresult instruction to extract return values.
This pass is not yet ready for prime time.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47776 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29 23:34:08 +00:00
Chris Lattner
9d34c4d678
fix a bug Anders ran into where scalarrepl would crash when promoting
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a union containing a vector and an array whose elements were smaller than
the vector elements. this means we need to compile the load of the
array elements into an extract element plus a truncate.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47752 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29 07:12:06 +00:00
Chris Lattner
800de31776
Refactor some code out of ConvertUsesToScalar into their own methods, no
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functionality change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47751 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29 07:03:13 +00:00
Chris Lattner
5ebd93630b
Folding or(fcmp,fcmp) only works if the operands of the fcmps are the same fp type.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47750 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-29 06:09:11 +00:00
Owen Anderson
77db50f68f
Fix an issue where GVN had the sizes of the two memcpy's reverse, resulting
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in an invalid transformation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47639 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 23:06:17 +00:00
Gabor Greif
53bdbd7565
fix http://llvm.org/bugs/show_bug.cgi?id=2097
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47615 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 19:13:21 +00:00
Eli Friedman
9ec8095485
Fix for pr2093: direct operands aren't necessarily addresses, so don't
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try to simplify them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47610 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 18:37:49 +00:00
Bill Wendling
587c01d674
De-tabify.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47599 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 10:53:30 +00:00
Evan Cheng
9bf12b5583
Fix PR2076. CodeGenPrepare now sinks address computation for inline asm memory
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operands into inline asm block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47589 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-26 02:42:37 +00:00
Owen Anderson
c0808a7e1d
Fix an issue where GVN was performing the return slot optimization when it was
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not safe. This is fixed by more aggressively checking that the return slot is
not used elsewhere in the function.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47544 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 04:08:09 +00:00
Owen Anderson
0f7ea1ab10
Fix an issue where GVN would try to use an instruction before its definition when performing return slot optimization.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47541 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-25 00:40:41 +00:00
Dale Johannesen
22c3979fca
Split ParameterAttributes.h, putting the complicated
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stuff into ParamAttrsList.h. Per feedback from
ParamAttrs changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47504 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 22:17:59 +00:00
Zhou Sheng
58d13af6f0
Fixed a typo.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47478 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-22 10:00:35 +00:00
Dan Gohman
b5660dc822
Add explicit keywords.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47382 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 16:44:09 +00:00
Anton Korobeynikov
4aefd6b7d4
Fix newly-introduced 4.3 warnings
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47375 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 12:07:57 +00:00
Anton Korobeynikov
c6ee8276f3
Get rid of hash_map. Use StringMap instead
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47373 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:27:49 +00:00
Anton Korobeynikov
07e6e56f57
Make Transforms to be 4.3 warnings-clean
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47371 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:26:25 +00:00
Anton Korobeynikov
ae9f3a3b7c
Unbreak build with gcc 4.3: provide missed includes and silence most annoying warnings.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47367 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 11:08:44 +00:00
Owen Anderson
61d30a821f
When performing return slot optimization, remember to inform memdep when we're removing the memcpy.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47364 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-20 08:23:02 +00:00
Dale Johannesen
0d51e7ec0d
Expand ParameterAttributes to 32 bits (in preparation
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for adding alignment info, not there yet). Clean up
interfaces to reference ParameterAttributes consistently.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47342 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 21:38:47 +00:00
Chris Lattner
75542bd56b
remove the LowerSelect pass. The last client was the old Sparc backend, which is long dead by now.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47323 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 07:49:17 +00:00
Chris Lattner
15f166c7b6
remove the lower packed pass. It can never work and even the parts that
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could work don't work fully. This fixes PR1705. Oh yeah, we don't have
packed types anymore either ;-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47322 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 07:39:17 +00:00
Owen Anderson
967552e7ec
Refactor this method a bit, and correct a test that was completely wrong but happened to work out anyways. :-)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47321 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 07:07:51 +00:00
Chris Lattner
e42ce73c37
isa+cast -> dyncast.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47320 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 06:53:20 +00:00
Chris Lattner
0a76a621a4
simplify this code again, try 2 :)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47319 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 06:52:38 +00:00
Owen Anderson
9cffa9a6ed
Fix a comment.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47318 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 06:51:23 +00:00
Owen Anderson
61c24e96b1
Major improvements to yesterday's return slot optimization. Remove some unneccessary constraints,
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and add some others that should have been in from the first place. Document the whole thing better.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47315 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 06:35:43 +00:00
Chris Lattner
50b2ca4c73
fdiv/frem of undef can produce undef, because the undef operand
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can be a SNaN. We could be more aggressive and turn this into
unreachable, but that is less nice, and not really worth it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47313 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 06:12:18 +00:00
Owen Anderson
fa113f8155
Factor the profitability check for return slot optimization out into a static function.
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At some point in the future, this check will become smarter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47310 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 03:27:34 +00:00
Owen Anderson
c0755a6f98
An sret parameter is required to be the first parameter, so there's no need to loop
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over all the parameters of the callee looking for it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47309 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 03:15:29 +00:00
Owen Anderson
7acc0af95a
Cleanup some of my patches from yesterday. Refactor the check for which xform
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to apply to a memcpy into processInstruction. Also, fix a bug in the check due to
missing braces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47307 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 03:09:45 +00:00
Owen Anderson
c2580ab9b0
Fix Transforms/GVN/memcpy.ll, which Chris broke in r47275 by reordering the branches. memcpy's are a kind of CallInst.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47305 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-19 02:53:23 +00:00
Nick Lewycky
e0cfecf47d
Correctly fold divide-by-constant, even when faced with overflow.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47287 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 22:48:05 +00:00
Chris Lattner
e10c0b9d66
Transforming -A + -B --> -(A + B) isn't safe for FP, thanks
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to Dale for noticing this!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47276 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 17:50:16 +00:00
Chris Lattner
913b19f6fc
minor code simplification, no functionality change.
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47275 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 17:47:29 +00:00
Duncan Sands
548448a317
Simplify caller updating using a CallSite, as
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requested by Chris. While there, do the same
for an existing function committed by someone
called "lattner" :)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47273 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 17:32:13 +00:00
Owen Anderson
5aa4f2a085
Add support to GVN for performing sret return slot optimization. This means that, if an sret function tail calls
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another sret function, it should pass its own sret parameter to the tail callee, allowing it to fill in the correct
return value. llvm-gcc does not emit this by default. Instead, it allocates space in the caller for the sret of
the tail call and then uses memcpy to copy the result into the caller's sret parameter. This optimization detects
and optimizes that case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47265 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-18 09:24:53 +00:00