Commit Graph

25 Commits

Author SHA1 Message Date
Nate Begeman
9008ca6b6b 2nd attempt, fixing SSE4.1 issues and implementing feedback from duncan.
PR2957

ISD::VECTOR_SHUFFLE now stores an array of integers representing the shuffle
mask internal to the node, rather than taking a BUILD_VECTOR of ConstantSDNodes
as the shuffle mask.  A value of -1 represents UNDEF.

In addition to eliminating the creation of illegal BUILD_VECTORS just to 
represent shuffle masks, we are better about canonicalizing the shuffle mask,
resulting in substantially better code for some classes of shuffles.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70225 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-27 18:41:29 +00:00
Rafael Espindola
15684b2955 Revert 69952. Causes testsuite failures on linux x86-64.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69967 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24 12:40:33 +00:00
Nate Begeman
b706d29f9c PR2957
ISD::VECTOR_SHUFFLE now stores an array of integers representing the shuffle
mask internal to the node, rather than taking a BUILD_VECTOR of ConstantSDNodes
as the shuffle mask.  A value of -1 represents UNDEF.

In addition to eliminating the creation of illegal BUILD_VECTORS just to 
represent shuffle masks, we are better about canonicalizing the shuffle mask,
resulting in substantially better code for some classes of shuffles.

A clean up of x86 shuffle code, and some canonicalizing in DAGCombiner is next.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69952 91177308-0d34-0410-b5e6-96231b3b80d8
2009-04-24 03:42:54 +00:00
Dan Gohman
e1ca7c4dd5 Add a comment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@68111 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-31 16:46:45 +00:00
Jim Grosbach
da4231f134 fix a few spelling errors and typos
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67758 91177308-0d34-0410-b5e6-96231b3b80d8
2009-03-26 16:17:51 +00:00
Evan Cheng
32c1a4c342 Eliminate a 'control reaches end of non-void function' warning.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64111 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-09 03:07:24 +00:00
Dale Johannesen
49de98214b Reapply 63765. Patches for clang and llvm-gcc to follow.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63812 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-05 01:49:45 +00:00
Dale Johannesen
4d452de150 Reverting 63765. This broke the build of both clang
and llvm-gcc.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63786 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-04 22:47:25 +00:00
Nate Begeman
d24479730a New feature: add support for target intrinsics being defined in the
target directories themselves.  This also means that VMCore no longer
needs to know about every target's list of intrinsics.  Future work
will include converting the PowerPC target to this interface as an
example implementation.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63765 91177308-0d34-0410-b5e6-96231b3b80d8
2009-02-04 19:47:21 +00:00
Bob Wilson
6c01ca9e29 Fix spelling in some comments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61702 91177308-0d34-0410-b5e6-96231b3b80d8
2009-01-05 17:23:09 +00:00
Dan Gohman
0540e17788 Add support for having multiple predicates on a TreePatternNode.
This will allow predicates to be composed, which will allow the
predicate definitions to become less redundant, and eventually
will allow DAGISelEmitter.cpp to emit less redundant code.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57562 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-15 06:17:21 +00:00
Dan Gohman
22bb31103d Factor out the predicate check code from DAGISelEmitter.cpp
and use it in FastISelEmitter.cpp, and make FastISel
subtarget aware. Among other things, this lets it work
properly on x86 targets that don't have SSE, where it
successfully selects x87 instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55156 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-22 00:20:26 +00:00
Mon P Wang
e3b3a7241c Added support for overloading intrinsics (atomics) based on pointers
to different address spaces.  This alters the naming scheme for those
intrinsics, e.g., atomic.load.add.i32 => atomic.load.add.i32.p0i32


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54195 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-30 04:36:53 +00:00
Evan Cheng
6bd9567a6a - Add "Commutative" property to intrinsics. This allows tblgen to generate the commuted variants for dagisel matching code.
- Mark lots of X86 intrinsics as "Commutative" to allow load folding.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52353 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-16 20:29:38 +00:00
Duncan Sands
83ec4b6711 Wrap MVT::ValueType in a struct to get type safety
and better control the abstraction.  Rename the type
to MVT.  To update out-of-tree patches, the main
thing to do is to rename MVT::ValueType to MVT, and
rewrite expressions like MVT::getSizeInBits(VT) in
the form VT.getSizeInBits().  Use VT.getSimpleVT()
to extract a MVT::SimpleValueType for use in switch
statements (you will get an assert failure if VT is
an extended value type - these shouldn't exist after
type legalization).
This results in a small speedup of codegen and no
new testsuite failures (x86-64 linux).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52044 91177308-0d34-0410-b5e6-96231b3b80d8
2008-06-06 12:08:01 +00:00
Dan Gohman
ee4fa1977d Move instruction flag inference out of InstrInfoEmitter and into
CodeGenDAGPatterns, where it can be used in other tablegen backends.
This allows the inference to be done for DAGISelEmitter so that it
gets accurate mayLoad/mayStore/isSimpleLoad flags. 

This brings MemOperand functionality back to where it was before
48329. However, it doesn't solve the problem of anonymous patterns
which expand to code that does loads or stores.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@49123 91177308-0d34-0410-b5e6-96231b3b80d8
2008-04-03 00:02:49 +00:00
Scott Michel
327d0651f8 This patch fixes a problem encountered by the CellSPU backend where variants
were being pruned in patterns where a variable was used more than once, e.g.:

  (or (and R32C:$rA, R32C:$rC), (and R32C:$rB, (not R32C:$rC)))

In this example, $rC is used more than once and is actually significant to
instruction selection pattern matching when commuted variants are produced.
This patch scans the pattern's clauses and collects the variables, creating
a set of variables that are used more than once. TreePatternNode::isIsomorphicTo()
also understands that multiply-used variables are significant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47950 91177308-0d34-0410-b5e6-96231b3b80d8
2008-03-05 17:49:05 +00:00
Nate Begeman
b5af3344c1 Tablegen support for insert & extract element matching
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46901 91177308-0d34-0410-b5e6-96231b3b80d8
2008-02-09 01:37:05 +00:00
Chris Lattner
e67bde5bb1 set the 'isstore' flag for instructions whose pattern is an
intrinsic that writes to memory.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45650 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 05:36:50 +00:00
Chris Lattner
f1ab4f18aa improve const correctness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45646 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 01:52:22 +00:00
Chris Lattner
fe71893183 rename CodegenDAGPatterns -> CodeGenDAGPatterns
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45641 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 01:10:31 +00:00
Chris Lattner
443e3f9dd6 move Node Transformation printing from CodeGenDAGPatterns -> DAGISelEmitter.
The only difference in output is that we now print them in alphabetical 
order instead of reverse alphabetical order.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45635 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 22:54:53 +00:00
Chris Lattner
dc32f9802a move predicate printing code from CodeGenDAGPatterns -> DAGISelEmitter.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45634 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 22:43:57 +00:00
Chris Lattner
60d8139d1b fix a fixme by improving const correctness.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45633 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 22:30:17 +00:00
Chris Lattner
6cefb77a70 change getQualifiedName to be a global function.
Split the pattern parsing code out from the dag isel emitter into it's own file.

No functionality change.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45632 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-05 22:25:12 +00:00