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Author SHA1 Message Date
Chris Lattner
da5c0c85dc Duncan is nervous about undefinedness of % with negatives. I'm 
not thrilled about 64-bit % in general, so rewrite to use * instead.

llvm-svn: 62047
 2009-01-11 20:41:36 +00:00
Chris Lattner
d1e5994f90 do not generated GEPs into vectors where they don't already exist. 
We should treat vectors as atomic types, not like arrays.

llvm-svn: 62046
 2009-01-11 20:23:52 +00:00
Chris Lattner
d2011c4015 Make a couple of cleanups to the instcombine bitcast/gep 
canonicalization transform based on duncan's comments:

1) improve the comment about %.
2) within our index loop make sure the offset stays 
   within the *type size*, instead of within the *abi size*.
   This allows us to reason explicitly about landing in tail
   padding and means that issues like non-zero offsets into
   [0 x foo] types don't occur anymore.

llvm-svn: 62045
 2009-01-11 20:15:20 +00:00
Nick Lewycky
4d1c04a4ea Use the spiffy new getAlignmentFromAttrs function. 
llvm-svn: 62039
 2009-01-11 17:02:06 +00:00
Evan Cheng
e280fcfbbc CheckForPhysRegDependency should not return copy cost. It's not used. No functionality change. 
llvm-svn: 62036
 2009-01-11 08:53:35 +00:00
Evan Cheng
ce292ad389 80 col violation. 
llvm-svn: 62024
 2009-01-10 03:33:22 +00:00
Devang Patel
a350457725 Reduce initial small vector sizes. 
llvm-svn: 62023
 2009-01-10 02:42:49 +00:00
Devang Patel
77332761ef Fix thinko. Create parent scope if parent descriptor is *not* null. 
llvm-svn: 62022
 2009-01-10 02:34:18 +00:00
Evan Cheng
411c48b7d2 Duplicated node may produce a non-physical register def. 
llvm-svn: 62015
 2009-01-09 22:44:02 +00:00
Evan Cheng
7a918ea197 Minor debug output tweak. 
llvm-svn: 62005
 2009-01-09 20:42:34 +00:00
Devang Patel
7fd7643d23 Request DwarfWriter. This will be used to handle dbg_* intrinsics. 
llvm-svn: 61999
 2009-01-09 19:11:50 +00:00
Chris Lattner
0030a3f5d4 fix typo Duncan noticed. 
llvm-svn: 61997
 2009-01-09 18:31:39 +00:00
Chris Lattner
1219b4e6bc Fix PR3304 
llvm-svn: 61995
 2009-01-09 18:18:43 +00:00
Misha Brukman
71c7e40966 Removed trailing whitespace from Makefiles. 
llvm-svn: 61991
 2009-01-09 16:44:42 +00:00
Chris Lattner
660c094906 Implement rdar://6480391, extending of equality icmp's to avoid a truncation. 
I noticed this in the code compiled for a routine using std::map, which produced
this code:
	%25 = tail call i32 @memcmp(i8* %24, i8* %23, i32 6) nounwind readonly
	%.lobit.i = lshr i32 %25, 31		; <i32> [#uses=1]
	%tmp.i = trunc i32 %.lobit.i to i8		; <i8> [#uses=1]
	%toBool = icmp eq i8 %tmp.i, 0		; <i1> [#uses=1]
	br i1 %toBool, label %bb3, label %bb4
which compiled to:

	call	L_memcmp$stub
	shrl	$31, %eax
	testb	%al, %al
	jne	LBB1_11	## 

with this change, we compile it to:

	call	L_memcmp$stub
	testl	%eax, %eax
	js	LBB1_11

This triggers all the time in common code, with patters like this:

	%169 = and i32 %ply, 1		; <i32> [#uses=1]
	%170 = trunc i32 %169 to i8		; <i8> [#uses=1]
	%toBool = icmp ne i8 %170, 0		; <i1> [#uses=1]

 	%7 = lshr i32 %6, 24		; <i32> [#uses=1]
	%9 = trunc i32 %7 to i8		; <i8> [#uses=1]
	%10 = icmp ne i8 %9, 0		; <i1> [#uses=1]

etc

llvm-svn: 61985
 2009-01-09 07:47:06 +00:00
Chris Lattner
1ce1f9e7cd Remove some old code that looks like a remanant from signed-types days. 
llvm-svn: 61984
 2009-01-09 07:10:58 +00:00
Chris Lattner
6140ea4f18 Fix PR3298, a crash in Jump Threading. Apparently even 
jump threading can have bugs, who knew? ;-)

llvm-svn: 61983
 2009-01-09 06:08:12 +00:00
Chris Lattner
5ce930d116 Fix part 3/2 of PR3290, making instcombine zap (gep(bitcast)) when possible. 
llvm-svn: 61980
 2009-01-09 05:44:56 +00:00
Chris Lattner
0e8e8e4926 move some code, check to see if the input to the GEP is a bitcast 
(which is constant time and cheap) before checking hasAllZeroIndices.

llvm-svn: 61976
 2009-01-09 04:53:57 +00:00
Dan Gohman
a487b137a8 Add load-folding table entries for MOVDQA. 
llvm-svn: 61972
 2009-01-09 02:40:34 +00:00
Dan Gohman
0e86745357 Whitespace and other minor adjustments to make SSE instructions have 
the same formatting as their corresponding SSE2 instructions, for
consistency.

llvm-svn: 61971
 2009-01-09 02:27:34 +00:00
Dale Johannesen
eb1316a896 Adjustments to last patch based on review. 
llvm-svn: 61969
 2009-01-09 01:30:11 +00:00
Dan Gohman
ff89414349 61949 accidentally introduced an escaped newline. Fix this by making 
the comment a little more verbose.

llvm-svn: 61959
 2009-01-08 23:51:48 +00:00
Devang Patel
747d4b38ad Convert DwarfWriter into a pass. 
Now Users request DwarfWriter through getAnalysisUsage() instead of creating an instance of DwarfWriter object directly.

llvm-svn: 61955
 2009-01-08 23:40:34 +00:00
Dan Gohman
321b716d84 Delete unnecessary parens around return values. 
llvm-svn: 61950
 2009-01-08 22:19:34 +00:00
Dan Gohman
88a0d4277d Fix the comment for lltok::backslash. 
llvm-svn: 61949
 2009-01-08 22:18:13 +00:00
Dan Gohman
831bc48415 Fix the path to llvm/Assembly/Parser.h in a comment. 
llvm-svn: 61948
 2009-01-08 22:17:05 +00:00
Dale Johannesen
4c25cb12ea Do not inline functions with (dynamic) alloca into 
functions that don't already have a (dynamic) alloca.
Dynamic allocas cause inefficient codegen and we shouldn't
propagate this (behavior follows gcc).  Two existing tests
assumed such inlining would be done; they are hacked by
adding an alloca in the caller, preserving the point of
the tests.

llvm-svn: 61946
 2009-01-08 21:45:23 +00:00
Duncan Sands
51e12762d5 Use mayBeOverridden here, in anticipation of the 
day when more linkage types will be handled.

llvm-svn: 61944
 2009-01-08 20:55:49 +00:00
Chris Lattner
5a8a2b046d ValueTracker can't assume that an alloca with no specified alignment 
will get its preferred alignment.  It has to be careful and cautiously assume
it will just get the ABI alignment.  This prevents instcombine from rounding
up the alignment of a load/store without adjusting the alignment of the alloca.

llvm-svn: 61934
 2009-01-08 19:28:38 +00:00
Chris Lattner
e16e141b70 one more crash from PR3281, we now diagnose: 
llvm-as: t.ll:2:39: function may not return opaque type
  %"bwmoyl" = tail call coldcc opaque @g()
                                      ^
llvm-svn: 61933
 2009-01-08 19:05:36 +00:00
Devang Patel
97863f513c Add DebugInfo based APIs to record source line info. 
llvm-svn: 61928
 2009-01-08 17:19:22 +00:00
Misha Brukman
ae1566f744 * Moved author attribution to CREDITS.TXT 
* Removed trailing whitespace

llvm-svn: 61927
 2009-01-08 16:40:25 +00:00
Misha Brukman
cada42bb4e * Alphabetized #includes 
* Removed trailing whitespace

llvm-svn: 61926
 2009-01-08 15:50:22 +00:00
Chris Lattner
fe3e114d7a add some more crazy strlen and memcpy stuff I noticed in spec. 
llvm-svn: 61918
 2009-01-08 07:34:55 +00:00
Chris Lattner
304f33297f add some notes about strlen craziness in eon. 
llvm-svn: 61917
 2009-01-08 06:52:57 +00:00
Chris Lattner
60a03a2f36 This implements the second half of the fix for PR3290, handling 
loads from allocas that cover the entire aggregate.  This handles
some memcpy/byval cases that are produced by llvm-gcc.  This triggers
a few times in kc++ (with std::pair<std::_Rb_tree_const_iterator
<kc::impl_abstract_phylum*>,bool>) and once in 176.gcc (with %struct..0anon).

llvm-svn: 61915
 2009-01-08 05:42:05 +00:00
Devang Patel
3125e21ae4 Add APIs to record regions and variables. 
Again, shamelessly copied from MMI.

llvm-svn: 61912
 2009-01-08 02:49:34 +00:00
Devang Patel
0db006ea38 Add APIs to manage scope using DebugInfo interface. 
This is a shameless copy of similar APIs from MachineModuleInfo. The copy from MMI will be deleted in near future.

llvm-svn: 61908
 2009-01-08 02:33:41 +00:00
Bob Wilson
4a5897fc16 Fix failure messages in Verifier::PerformTypeCheck. The argument numbers 
passed in to this function changed to support multiple return values,
leading to some incorrect argument numbers in the failure messages.
With this change, the ArgNo values used for return values and parameters are
disjoint, and the new IntrinsicParam function translates those ArgNo values
to strings that can be used in the messages.  This also fixes a few places
where PerformTypeCheck did not return false following calls to CheckFailed.

llvm-svn: 61903
 2009-01-08 01:56:06 +00:00
Oscar Fuentes
b7928f1380 CMake: removed lib/VMCore/DebugInfoBuilder.cpp. 
llvm-svn: 61900
 2009-01-08 00:18:52 +00:00
Bob Wilson
1d703391e7 Assert that VectorType::getTruncatedElementVectorType is not used with 
odd bit-width vector elements.  Add a check in the verifier for this also.

llvm-svn: 61899
 2009-01-07 23:44:27 +00:00
Chris Lattner
0e3c4e89eb remove DebugInfoBuilder, it has been subsumed by Analysis/DebugInfo.h 
llvm-svn: 61898
 2009-01-07 23:25:06 +00:00
Misha Brukman
6338af14f6 Fix off-by-one error in traversing an array; this fixes a test. 
The error was reported by gcc-4.3.0 during compilation.

llvm-svn: 61896
 2009-01-07 23:07:29 +00:00
Gabor Greif
e3326b1e14 revert to functionally equivalent formulation 
llvm-svn: 61895
 2009-01-07 23:07:22 +00:00
Gabor Greif
31343a0b10 use the obvious getters 
llvm-svn: 61893
 2009-01-07 22:39:29 +00:00
Dan Gohman
3579548f68 Remove redundant 'else's. No functionality change. 
llvm-svn: 61891
 2009-01-07 22:30:55 +00:00
Duncan Sands
3571fbfba8 Whitespace - correct formatting. 
llvm-svn: 61879
 2009-01-07 20:01:06 +00:00
Duncan Sands
a254acd1d3 Remove alloca tracking from nocapture analysis. Not only 
was it not very helpful, it was also wrong!  The problem
is shown in the testcase: the alloca might be passed to
a nocapture callee which dereferences it and returns the
original pointer.  But because it was a nocapture call we
think we don't need to track its uses, but we do.

llvm-svn: 61876
 2009-01-07 19:39:06 +00:00
Duncan Sands
ec12740e7a Reorder these. 
llvm-svn: 61873
 2009-01-07 19:17:02 +00:00