ff7889196b
Add support for loops that don't start with Zero.
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This is important for loops in the LAPACK test-suite.
These loops start at 1 because they are auto-converted from fortran.
llvm-svn: 167084
2012-10-31 00:45:26 +00:00
47a299dcc9
Add documentation.
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llvm-svn: 167055
2012-10-30 22:06:26 +00:00
bc21aceb19
LoopVectorize: Add support for write-only loops when the write destination is a single pointer.
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Speedup SciMark by 1%
llvm-svn: 167035
2012-10-30 18:36:45 +00:00
b3e8e688da
LoopVectorize: Fix a bug in the initialization of reduction variables. AND needs to start at all-one
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while XOR, and OR need to start at zero.
llvm-svn: 167032
2012-10-30 18:12:36 +00:00
73ddcfe03f
LoopVectorizer: change debug prints: Print the module identifier when deciding to vectorize. When deciding not to vectorize do not print the called function name because it can be null.
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llvm-svn: 166989
2012-10-30 00:40:39 +00:00
5ad045a8c5
LoopVectorize: Update and preserve the dominator tree info.
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llvm-svn: 166970
2012-10-29 21:52:38 +00:00
859366f93f
1. Fix a bug in getTypeConversion. When a *simple* type is split, we need to return the type of the split result.
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2. Change the maximum vectorization width from 4 to 8.
3. A test for both.
llvm-svn: 166864
2012-10-27 04:11:32 +00:00
afae78edab
Refactor the VectorTargetTransformInfo interface.
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Add getCostXXX calls for different families of opcodes, such as casts, arithmetic, cmp, etc.
Port the LoopVectorizer to the new API.
The LoopVectorizer now finds instructions which will remain uniform after vectorization. It uses this information when calculating the cost of these instructions.
llvm-svn: 166836
2012-10-26 23:49:28 +00:00
579042f71b
LoopVectorize: Teach the cost model to query scalar costs as scalar types and not vectors of 1.
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llvm-svn: 166715
2012-10-25 21:03:48 +00:00
5ffb049a55
Add support for additional reduction variables: AND, OR, XOR.
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Patch by Paul Redmond <paul.redmond@intel.com >.
llvm-svn: 166649
2012-10-25 00:08:41 +00:00
4a87683a41
Implement a basic cost model for vector and scalar instructions.
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llvm-svn: 166642
2012-10-24 23:47:38 +00:00
e4f491e7ee
whitespace
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llvm-svn: 166622
2012-10-24 20:58:40 +00:00
a721b21c64
LoopVectorizer: Add a basic cost model which uses the VTTI interface.
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llvm-svn: 166620
2012-10-24 20:36:32 +00:00
51e7246cb4
Back out r166591, not sure why this made it through since I cancelled the command. Bleh, sorry about this!
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llvm-svn: 166596
2012-10-24 17:25:11 +00:00
6a8f3f9e20
Delete a directory that wasn't supposed to be checked in yet.
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llvm-svn: 166591
2012-10-24 17:20:04 +00:00
5bed7b4fad
Use the AliasAnalysis isIdentifiedObj because it also understands mallocs and c++ news.
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PR14158.
llvm-svn: 166491
2012-10-23 18:44:18 +00:00
1c7fc71e69
Don't crash if the load/store pointer is not a GEP.
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Fix by Shivarama Rao <Shivarama.Rao@amd.com >
llvm-svn: 166427
2012-10-22 18:27:56 +00:00
f17cd27362
Rename a variable.
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llvm-svn: 166410
2012-10-22 04:53:05 +00:00
03011f1393
Vectorizer: optimize the generation of selects. If the condition is uniform, generate a scalar-cond select (i1 as selector).
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llvm-svn: 166409
2012-10-22 04:38:00 +00:00
c9741887c3
Update the loop vectorizer docs.
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llvm-svn: 166408
2012-10-22 03:52:53 +00:00
7d8991c778
Avoid an extra hash lookup when inserting a value into the widen map.
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llvm-svn: 166395
2012-10-21 16:26:35 +00:00
baa063bd03
Simplify code. No functionality change.
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llvm-svn: 166393
2012-10-21 15:36:03 +00:00
9694ab8ffa
Simplify code. No functionality change.
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llvm-svn: 166392
2012-10-21 15:29:19 +00:00
fe88c67161
Fix a bug in the vectorization of wide load/store operations.
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We used a SCEV to detect that A[X] is consecutive. We assumed that X was
the induction variable. But X can be any expression that uses the induction
for example: X = i + 2;
llvm-svn: 166388
2012-10-21 06:49:10 +00:00
c1679a95b6
Add support for reduction variables that do not start at zero.
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This is important for nested-loop reductions such as :
In the innermost loop, the induction variable does not start with zero:
for (i = 0 .. n)
for (j = 0 .. m)
sum += ...
llvm-svn: 166387
2012-10-21 05:52:51 +00:00
Nadav Rotem
Micah Villmow
Anders Carlsson
Jakub Staszak