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Author SHA1 Message Date
Dan Gohman
d13f1a3b59 Return null instead of false, as appropriate. 
llvm-svn: 70054
 2009-04-25 17:28:45 +00:00
Dan Gohman
a7fae1f865 Add several more icmp simplifications. Transform signed comparisons 
into unsigned ones when the operands are known to have the same
sign bit value.

llvm-svn: 70053
 2009-04-25 17:12:48 +00:00
Dan Gohman
60349bb21e Add a top-level comment about DAGCombiner's role in the compiler. 
llvm-svn: 70052
 2009-04-25 17:09:45 +00:00
Dan Gohman
9eb5ba6eb7 Handle ands with 0 and shifts by 0 correctly. These aren't 
common, but indvars shouldn't crash on them. This fixes PR4054.

llvm-svn: 70051
 2009-04-25 17:05:40 +00:00
Torok Edwin
285a5fb1d5 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.

llvm-svn: 70038
 2009-04-25 10:25:12 +00:00
Evan Cheng
696a04eba2 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. 
llvm-svn: 70026
 2009-04-25 09:25:19 +00:00
Sanjiv Gupta
9093a67350 Fixed the gep example for i16 type indices. 
llvm-svn: 70019
 2009-04-25 07:27:44 +00:00
Bob Wilson
162870a4b3 Change LowerCallResult method so that CCValAssign::BCvt can be used with 
f64 types.  This is not used for anything yet.

llvm-svn: 70006
 2009-04-25 00:33:20 +00:00
Dale Johannesen
493c3bcdc0 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.

llvm-svn: 69990
 2009-04-24 21:34:13 +00:00
Bob Wilson
0ac8a0cf95 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.

llvm-svn: 69978
 2009-04-24 17:05:01 +00:00
Bob Wilson
2a47f01759 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).

llvm-svn: 69977
 2009-04-24 17:00:36 +00:00
Gabor Greif
228f28e1ac Use a bigger hammer to coerce subversion into english. 
Patch by Benjamin Kramer!

llvm-svn: 69976
 2009-04-24 17:00:03 +00:00
David Greene
a28b42f818 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.

llvm-svn: 69974
 2009-04-24 16:55:41 +00:00
Bob Wilson
1067abd956 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.

llvm-svn: 69973
 2009-04-24 16:55:25 +00:00
Rafael Espindola
b01a03d6d5 Add LTO_SYMBOL_DEFINITION_WEAKUNDEF, use that on the gold plugin. 
llvm-svn: 69972
 2009-04-24 16:55:21 +00:00
Sanjiv Gupta
14c405828e Fixed spaces and the getelementpointer example with i16 type indices. 
llvm-svn: 69971
 2009-04-24 16:38:13 +00:00
Rafael Espindola
4e7a0bf1f1 Fix PR 4004 by including the call to __tls_get_addr in X86tlsaddr. This is not 
very elegant, but neither is the tls specification :-(

llvm-svn: 69968
 2009-04-24 12:59:40 +00:00
Rafael Espindola
0b1037ad26 Revert 69952. Causes testsuite failures on linux x86-64. 
llvm-svn: 69967
 2009-04-24 12:40:33 +00:00
Chris Lattner
961e0a34e0 fix a typo noticed by duncan 
llvm-svn: 69962
 2009-04-24 06:37:12 +00:00
Chris Lattner
e90528cac5 "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!

llvm-svn: 69958
 2009-04-24 05:30:14 +00:00
Nate Begeman
c1a09c7dfa 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.

llvm-svn: 69952
 2009-04-24 03:42:54 +00:00
Dan Gohman
63dab69b36 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.

llvm-svn: 69948
 2009-04-24 02:40:23 +00:00
Sanjiv Gupta
f1177e1be7 Allow i16 type indices to gep. 
llvm-svn: 69946
 2009-04-24 02:37:54 +00:00
Dan Gohman
9d13b714f5 Factor out a bit of code that appears in several places into a 
utility function.

llvm-svn: 69937
 2009-04-23 23:13:24 +00:00
Dan Gohman
313018c1d3 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.

llvm-svn: 69935
 2009-04-23 22:50:03 +00:00
Dan Gohman
46ab8008a8 Fix spurious indentation in a comment. 
llvm-svn: 69934
 2009-04-23 22:41:05 +00:00
David Greene
ddac45edb9 Fix a documentation bug. 
llvm-svn: 69923
 2009-04-23 21:27:58 +00:00
David Greene
a92a50c7c2 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.

llvm-svn: 69921
 2009-04-23 21:25:15 +00:00
Evan Cheng
ff776c8193 Update comments. 
llvm-svn: 69919
 2009-04-23 20:39:31 +00:00
Evan Cheng
f20fb20367 Fix an obvious type. 
llvm-svn: 69918
 2009-04-23 20:18:13 +00:00
Dan Gohman
3499a53e1d Explicitly pass -tailcallopt=false to these tests so that they 
work as intended no matter what the default setting of that
option is.

llvm-svn: 69911
 2009-04-23 19:39:41 +00:00
Dale Johannesen
ab02315fdb Testcase for 69795. 
llvm-svn: 69901
 2009-04-23 18:04:04 +00:00
Dan Gohman
ea9a6d22d3 Fix an error in this test. 
llvm-svn: 69893
 2009-04-23 15:22:28 +00:00
Dan Gohman
c0f47d6ec1 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.

llvm-svn: 69892
 2009-04-23 15:16:49 +00:00
Sanjiv Gupta
0457bf4420 Banksel immediate constant will always immediately follow the GA/ES, so scan an insn from beginnin to find out the banksel operand. 
llvm-svn: 69883
 2009-04-23 10:34:58 +00:00
Nick Lewycky
32cfba44df Simplify trunc(extend(x)) in SCEVs, just for completeness. Also fix some odd 
whitespace in the same file.

llvm-svn: 69870
 2009-04-23 05:15:08 +00:00
Owen Anderson
0c0498a365 Testcase for PR3909. 
llvm-svn: 69868
 2009-04-23 04:33:42 +00:00
Owen Anderson
caa90b2561 Testcase for PR2639. 
llvm-svn: 69867
 2009-04-23 04:30:52 +00:00
Owen Anderson
bf7354995a Testcase for PR2537. 
llvm-svn: 69866
 2009-04-23 04:26:42 +00:00
Owen Anderson
f04f0e15c7 Fix typo. 
llvm-svn: 69865
 2009-04-23 04:24:19 +00:00
Owen Anderson
a1a09bc01f Testcase for PR3085. 
llvm-svn: 69863
 2009-04-23 04:21:14 +00:00
Owen Anderson
d4b3279a3f Add testcase from PR3086. 
llvm-svn: 69862
 2009-04-23 04:14:03 +00:00
Dan Gohman
6a4629e856 Add support for printing MO_ExternalSymbol operands in 
memory operand tuples. This doesn't ever come up in normal
code however.

llvm-svn: 69848
 2009-04-23 00:57:37 +00:00
Dan Gohman
4523a11557 Add more ulimit limits, to catch more kinds of runaway behavior. 
llvm-svn: 69847
 2009-04-23 00:28:31 +00:00
Owen Anderson
d2cf86afcb Use the testcase from PR2791. 
llvm-svn: 69846
 2009-04-23 00:15:26 +00:00
Evan Cheng
bdfff0ba69 Make sure both operands have binary instructions have the same type. 
llvm-svn: 69844
 2009-04-22 23:39:28 +00:00
Evan Cheng
faa208ae5f A few more places where the check of use_empty is needed. 
llvm-svn: 69842
 2009-04-22 23:09:16 +00:00
Evan Cheng
2af546d5fa Avoid deferencing use_begin() if value does not have a use. 
llvm-svn: 69836
 2009-04-22 22:45:37 +00:00
David Greene
e41e6599cf Allow defm to inherit from multiple multiclasses. 
llvm-svn: 69832
 2009-04-22 22:17:51 +00:00
David Greene
0698602922 Implement !nameconcat to concatenate strings and look up the resulting 
name in the symbol table, returning an object.

llvm-svn: 69822
 2009-04-22 20:18:10 +00:00