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Author SHA1 Message Date
Dan Gohman
1c8491ecc7 Add several more icmp simplifications. Transform signed comparisons 
into unsigned ones when the operands are known to have the same
sign bit value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70053 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-25 17:12:48 +00:00
Dan Gohman
4128700ab1 Add a top-level comment about DAGCombiner's role in the compiler. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70052 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-25 17:09:45 +00:00
Dan Gohman
2c73d5fb9e Handle ands with 0 and shifts by 0 correctly. These aren't 
common, but indvars shouldn't crash on them. This fixes PR4054.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70051 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-25 17:05:40 +00:00
Torok Edwin
4cdc44c82c Fix g++-4.4.0 warning, it was causing llvm-nm to fail on wrapped BC files: 
Path.cpp:59: warning: case label value exceeds maximum value for type
magic[0] is a (signed) char, but some case values are unsigned (e.g. 0xde).
When magic[0] was 0xde, the switch has taken the default branch instead of case
0xde branch.
Apparently this was the behaviour with older versions of gcc too, but not with g++.
Now g++-4.4 behaves as gcc, and ignores unsigned case values out of range signed
range.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70038 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-25 10:25:12 +00:00
Evan Cheng
0adb527d16 Do not share a single unknown val# for all the live ranges merged into a physical sub-register live interval. When coalescer is merging in clobbered virtaul register live interval into a physical register live interval, give each virtual register val# a separate val# in the physical register live interval. Otherwise, the coalescer would have lost track of the definitions information it needs to make correct coalescing decisions. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70026 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-25 09:25:19 +00:00
Sanjiv Gupta
9f805c206e Fixed the gep example for i16 type indices. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70019 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-25 07:27:44 +00:00
Bob Wilson
8091524d98 Change LowerCallResult method so that CCValAssign::BCvt can be used with 
f64 types.  This is not used for anything yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70006 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-25 00:33:20 +00:00
Dale Johannesen
2f91f30b93 Fix PR 4057, a crash doing float->char const folding. 
This particular one is undefined behavior (although this
isn't related to the crash), so it will no longer do it
at compile time, which seems better.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69990 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 21:34:13 +00:00
Bob Wilson
d55bd51f31 Adjust a comment to reflect what the code does. Splitting a 64-bit argument 
between registers and the stack may be required with the APCS ABI, but it
isn't tied to using a particular version of the ARM architecture.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69978 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 17:05:01 +00:00
Bob Wilson
4d59e1d666 Fix up some problems with getCopyToReg and getCopyFromReg nodes being 
chained and "flagged" together.  I also made a few changes to handle the
chain and flag values more consistently.  I found these problems by
inspection so I'm not aware of anything that breaks because of them
(thus no testcase).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69977 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 17:00:36 +00:00
Gabor Greif
95fc7aac60 Use a bigger hammer to coerce subversion into english. 
Patch by Benjamin Kramer!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69976 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 17:00:03 +00:00
David Greene
d34a73b3b7 Fix multiclass inheritance to limit value resolution to new defs added 
by base multiclasses.  Do not attempt to alter defs from previous base
multiclasses.  This fixes multiple multiclass inheritance.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69974 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 16:55:41 +00:00
Bob Wilson
1c2c462d0f Remove unnecessary references to f32 types. After specifying that f32 
should be bit-converted to i32, it is sufficient to list only i32 in
subsequent definitions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69973 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 16:55:25 +00:00
Rafael Espindola
7431af050f Add LTO_SYMBOL_DEFINITION_WEAKUNDEF, use that on the gold plugin. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69972 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 16:55:21 +00:00
Sanjiv Gupta
16ffa807fc Fixed spaces and the getelementpointer example with i16 type indices. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69971 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 16:38:13 +00:00
Rafael Espindola
15f1b66d64 Fix PR 4004 by including the call to __tls_get_addr in X86tlsaddr. This is not 
very elegant, but neither is the tls specification :-(



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69968 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 12:59:40 +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
Chris Lattner
f6b9f260ed fix a typo noticed by duncan 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69962 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 06:37:12 +00:00
Chris Lattner
f3b0aac190 "I got annoyed at the compiler warnings from ConstantInt::get(Ty, -1, 
true), and casts make me nervous and are verbose anyway, so here's a
ConstantInt::getSigned(Ty, int64_t) method. Just overloading
ConstantInt::get() to take an int64_t too would cause ambiguous
overload errors."

Patch by Jeffrey Yasskin!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69958 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 05:30:14 +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
98d07102d6 Instead of requiring TLI.LowerCallTo to return an ISD::BUILD_PAIR, 
use ISD::EXTRACT_ELEMENT. SelectionDAG has a special fast-path for
the cast of an EXTRACT_ELEMENT with a BUILD_PAIR operand, for the
common case.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69948 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 02:40:23 +00:00
Sanjiv Gupta
7787d4a34b Allow i16 type indices to gep. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69946 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-24 02:37:54 +00:00
Dan Gohman
ad62f53795 Factor out a bit of code that appears in several places into a 
utility function.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69937 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 23:13:24 +00:00
Dan Gohman
5e5558bc66 Handle Void types in ComputeValueVTs. This doesn't currently occur, 
but this change makes the code more general and easier to adapt for
new purposes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69935 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 22:50:03 +00:00
Dan Gohman
f1d012c595 Fix spurious indentation in a comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69934 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 22:41:05 +00:00
David Greene
3f47c292bc Fix a documentation bug. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69923 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 21:27:58 +00:00
David Greene
e8cf21e8e3 Make BinOps typed and require a type specifier for !nameconcat. This 
allows binops to be used in typed contexts such as when passing
arguments to classes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69921 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 21:25:15 +00:00
Evan Cheng
aa809fbde1 Update comments. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69919 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 20:39:31 +00:00
Evan Cheng
c2cee14a8c Fix an obvious type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69918 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 20:18:13 +00:00
Dan Gohman
e41bc94bb1 Explicitly pass -tailcallopt=false to these tests so that they 
work as intended no matter what the default setting of that
option is.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69911 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 19:39:41 +00:00
Dale Johannesen
4aa397c5bf Testcase for 69795. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69901 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 18:04:04 +00:00
Dan Gohman
e22d503ee5 Fix an error in this test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69893 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 15:22:28 +00:00
Dan Gohman
752ec7da50 Change SCEVExpander's expandCodeFor to provide more flexibility 
with the persistent insertion point, and change IndVars to make
use of it. This fixes a bug where IndVars was holding on to a
stale insertion point and forcing the SCEVExpander to continue to
use it.

This fixes PR4038.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69892 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 15:16:49 +00:00
Sanjiv Gupta
b1f321b553 Banksel immediate constant will always immediately follow the GA/ES, so scan an insn from beginnin to find out the banksel operand. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69883 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 10:34:58 +00:00
Nick Lewycky
5cd28fad15 Simplify trunc(extend(x)) in SCEVs, just for completeness. Also fix some odd 
whitespace in the same file.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69870 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 05:15:08 +00:00
Owen Anderson
03dac74d40 Testcase for PR3909. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69868 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 04:33:42 +00:00
Owen Anderson
887fde88ca Testcase for PR2639. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69867 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 04:30:52 +00:00
Owen Anderson
d92395fe92 Testcase for PR2537. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69866 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 04:26:42 +00:00
Owen Anderson
f2a5c0a04c Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69865 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 04:24:19 +00:00
Owen Anderson
176aeb1afa Testcase for PR3085. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69863 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 04:21:14 +00:00
Owen Anderson
d49468aa50 Add testcase from PR3086. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69862 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 04:14:03 +00:00
Dan Gohman
146a310e66 Add support for printing MO_ExternalSymbol operands in 
memory operand tuples. This doesn't ever come up in normal
code however.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69848 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 00:57:37 +00:00
Dan Gohman
ab192b71a6 Add more ulimit limits, to catch more kinds of runaway behavior. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69847 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 00:28:31 +00:00
Owen Anderson
3f7c72ab54 Use the testcase from PR2791. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69846 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-23 00:15:26 +00:00
Evan Cheng
9c15949967 Make sure both operands have binary instructions have the same type. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69844 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-22 23:39:28 +00:00
Evan Cheng
a8d4d7fe47 A few more places where the check of use_empty is needed. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69842 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-22 23:09:16 +00:00
Evan Cheng
1abe64663e Avoid deferencing use_begin() if value does not have a use. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69836 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-22 22:45:37 +00:00
David Greene
5654613a01 Allow defm to inherit from multiple multiclasses. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69832 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-22 22:17:51 +00:00
David Greene
c7cafcd815 Implement !nameconcat to concatenate strings and look up the resulting 
name in the symbol table, returning an object.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69822 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-22 20:18:10 +00:00
Duncan Sands
d7b2f7ffce Testcase for PR2958. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@69818 91177308-0d34-0410-b5e6-96231b3b80d8
 2009-04-22 18:55:17 +00:00