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32893 Commits

Author SHA1 Message Date
Evan Cheng
37a7a18748 Clear VisitedPHIs after use. 
llvm-svn: 84080
 2009-10-14 06:46:26 +00:00
Evan Cheng
907fd9c3fb Another BasicAA fix. If a value does not alias a GEP's base pointer, then it 
cannot alias the GEP. GEP pointer alias rule states this clearly:
A pointer value formed from a getelementptr instruction is associated with the
addresses associated with the first operand of the getelementptr.

llvm-svn: 84079
 2009-10-14 06:41:49 +00:00
Evan Cheng
c1056d9269 More code clean up based on patch feedback. 
llvm-svn: 84074
 2009-10-14 05:22:03 +00:00
Evan Cheng
efc0f806a4 Change VisitedPHIs into an instance variable that's freed by each alias() call. 
llvm-svn: 84072
 2009-10-14 05:05:02 +00:00
Dan Gohman
76221cc874 Make isSafeToClobberEFLAGS more aggressive. Teach it to scan backwards 
(for uses marked kill and defs marked dead) a few instructions in
addition to forwards. Also, increase the maximum number of instructions
to scan, as it appears to help in a fair number of cases.

llvm-svn: 84061
 2009-10-14 00:08:59 +00:00
Dan Gohman
49946908b4 This remat entry is basically done. There are hooks to allow targets 
to remat non-load instructions as loads, and the remat code now uses
the UnmodeledSideEffects flags, MachineMemOperands, and similar things
to decide which instructions are valid for rematerialization.

llvm-svn: 84060
 2009-10-14 00:02:01 +00:00
Dan Gohman
d845fbc307 Add a few README.txt items. 
llvm-svn: 84059
 2009-10-13 23:58:05 +00:00
Kevin Enderby
8d8e57983a Correct comment about ARM immediates using '#' not '$' and TODO for modifiers. 
llvm-svn: 84055
 2009-10-13 23:33:38 +00:00
Devang Patel
72f708ec2f s/DebugLoc.CompileUnit/DebugLoc.Scope/g 
s/DebugLoc.InlinedLoc/DebugLoc.InlinedAtLoc/g

llvm-svn: 84054
 2009-10-13 23:28:53 +00:00
Devang Patel
81485d992b Check void type before using RAUWd. 
llvm-svn: 84049
 2009-10-13 22:56:32 +00:00
Bob Wilson
a98883deaa More Neon clean-up: avoid the need for custom-lowering vld/st-lane intrinsics 
by creating TargetConstants during instruction selection instead of during
legalization.

llvm-svn: 84042
 2009-10-13 22:29:24 +00:00
Kevin Enderby
959ec973ad More bits of the ARM target assembler for llvm-mc to parse immediates. 
Also fixed a couple of coding style things that crept in.  And added more
to the temporary hacked up ARMAsmParser::MatchInstruction() method for testing.

llvm-svn: 84040
 2009-10-13 22:19:02 +00:00
Evan Cheng
3130aba687 Teach basic AA about PHI nodes. If all operands of a phi NoAlias another value than it's safe to declare the PHI NoAlias the value. Ditto for MustAlias. 
llvm-svn: 84038
 2009-10-13 22:02:20 +00:00
Bob Wilson
88df19e49a NEON VLD/VST are now fully implemented. For operations that expand to 
multiple instructions, the expansion is done during selection so there is
no need to do anything special during legalization.

llvm-svn: 84036
 2009-10-13 21:55:24 +00:00
Devang Patel
20d88f9e16 Do not check use_empty() before replaceAllUsesWith(). This gives ValueHandles a chance to get properly updated. 
llvm-svn: 84033
 2009-10-13 21:41:20 +00:00
Jeffrey Yasskin
8a0bdbb7f3 Keep track of stubs that are created. This fixes PR5162 and probably PR4822 and 
4406. Patch by Nick Lewycky!

llvm-svn: 84032
 2009-10-13 21:32:57 +00:00
Duncan Sands
d4a35e9f36 Introduce new convenience methods for sign extending or 
truncating an SDValue (depending on whether the target
type is bigger or smaller than the value's type); or zero
extending or truncating it.  Use it in a few places (this
seems to be a popular operation, but I only modified cases
of it in SelectionDAGBuild).  In particular, the eh_selector
lowering was doing this wrong due to a repeated rather than
inverted test, fixed with this change.

llvm-svn: 84027
 2009-10-13 21:04:12 +00:00
Bob Wilson
d66a3fd73b Revise ARM inline assembly memory operands to require the memory address to 
be in a register.  The previous use of ARM address mode 2 was completely
arbitrary and inappropriate for Thumb.  Radar 7137468.

llvm-svn: 84022
 2009-10-13 20:50:28 +00:00
Dale Johannesen
7db511a23e Add an "msasm" flag to inline asm as suggested in PR 5125. 
A little ugliness is accepted to keep the binary file format
compatible.  No functional change yet.

llvm-svn: 84020
 2009-10-13 20:46:56 +00:00
Sandeep Patel
af459ed32d Fix method name in comment, per Bob Wilson. 
llvm-svn: 84017
 2009-10-13 20:25:58 +00:00
Dan Gohman
c5a7668904 Use the new CodeMetrics class to compute code size instead of 
manually counting instructions.

llvm-svn: 84016
 2009-10-13 20:12:23 +00:00
Dan Gohman
c1e210fa10 Compute a full cost value even when a setjmp call is found. 
llvm-svn: 84015
 2009-10-13 20:10:10 +00:00
Dan Gohman
665e336185 Split code not specific to Function inlining out into a separate class, 
named CodeMetrics. Move it to be a non-nested class. Rename RegionInfo
back to FunctionInfo.

llvm-svn: 84013
 2009-10-13 19:58:07 +00:00
David Goodwin
d23db026b6 Add debugging output. 
llvm-svn: 84011
 2009-10-13 19:16:03 +00:00
Sandeep Patel
1584038783 Add ARMv6T2 SBFX/UBFX instructions. Approved by Anton Korobeynikov. 
llvm-svn: 84009
 2009-10-13 18:59:48 +00:00
Ted Kremenek
1f746d5df3 Update CMake file (lexically order files). 
llvm-svn: 84008
 2009-10-13 18:57:27 +00:00
Devang Patel
8f81b906ab Do not write empty METADATA_ATTACHMENT record. 
llvm-svn: 84006
 2009-10-13 18:51:28 +00:00
Devang Patel
934fb4274a Remove unnecessary assert. 
llvm-svn: 84004
 2009-10-13 18:51:03 +00:00
Benjamin Kramer
679377c816 Update the other CMake file. 
llvm-svn: 84003
 2009-10-13 18:50:54 +00:00
Devang Patel
e911e90808 Parse GEP with attached custom metadata. This happens during libprofile_rt.bca build. 
llvm-svn: 84002
 2009-10-13 18:49:55 +00:00
Ted Kremenek
dd5d38175d Update CMake file. 
llvm-svn: 84001
 2009-10-13 18:48:07 +00:00
Evan Cheng
84c5224fa2 Refactor some code. No functionality changes. 
llvm-svn: 84000
 2009-10-13 18:42:04 +00:00
Dan Gohman
81218aa90e Commit the removal of this file, which is now moved to lib/Analysis. 
llvm-svn: 83999
 2009-10-13 18:37:20 +00:00
Dan Gohman
18cdd7ef1b Move the InlineCost code from Transforms/Utils to Analysis. 
llvm-svn: 83998
 2009-10-13 18:30:07 +00:00
Dan Gohman
f277c57aad Start refactoring the inline cost estimation code so that it can be used 
for purposes other than inlining.

llvm-svn: 83997
 2009-10-13 18:24:11 +00:00
Chris Lattner
26c670aa44 change simplifycfg to not duplicate 'unwind' instructions. Hopefully 
this will increase the likelihood of common code getting sunk towards
the unwind.

llvm-svn: 83996
 2009-10-13 18:13:05 +00:00
Dan Gohman
d01c6196f4 Make LoopUnswitch's cost estimation count Instructions, rather than 
BasicBlocks, so that it doesn't blindly procede in the presence of
large individual BasicBlocks. This addresses a class of code-size
expansion problems.

llvm-svn: 83992
 2009-10-13 17:50:43 +00:00
Jeffrey Yasskin
3eacbf419d Make the ExecutionEngine automatically remove global mappings on when their 
GlobalValue is destroyed.  Function destruction still leaks machine code and
can crash on leaked stubs, but this is some progress.

llvm-svn: 83987
 2009-10-13 17:42:08 +00:00
Devang Patel
ee9d2f0cc0 "there is not any instruction with attached debug info in this module" does not mean "there is no debug info in this module". :) 
llvm-svn: 83984
 2009-10-13 17:35:35 +00:00
Bob Wilson
747a6c0795 Add some ARM instruction encoding bits. 
Patch by Johnny Chen.

llvm-svn: 83983
 2009-10-13 17:35:30 +00:00
Bob Wilson
60d40281d3 Fix regression introduced by r83894. 
llvm-svn: 83982
 2009-10-13 17:29:13 +00:00
Devang Patel
729589a539 Copy metadata when value is RAUW'd. It is debatable whether this is the right approach for custom metadata data in general. However, right now the only custom data user, "dbg", expects this behavior while FE is constructing llvm IR with debug info. 
llvm-svn: 83977
 2009-10-13 17:00:54 +00:00
Bob Wilson
53fb652143 Fix a tab. Thanks to Johnny Chen for pointing it out. 
llvm-svn: 83973
 2009-10-13 15:27:23 +00:00
Nick Lewycky
ee0c1726d8 Force memory use markers to have a ConstantInt for the size argument. 
llvm-svn: 83960
 2009-10-13 07:57:33 +00:00
Nick Lewycky
72f185f281 Teach BasicAA a little something about the atomic intrinsics: they can only 
modify through the pointer they're given.

llvm-svn: 83959
 2009-10-13 07:48:38 +00:00
Daniel Dunbar
592c5055dd Fix a -Asserts warning. 
llvm-svn: 83950
 2009-10-13 06:47:08 +00:00
Victor Hernandez
21280bc3af Memory dependence analysis was incorrectly stopping to scan for stores to a pointer at bitcast uses of a malloc call. 
It should continue scanning until the malloc call, and this patch fixes that.

llvm-svn: 83931
 2009-10-13 01:42:53 +00:00
Devang Patel
aeac1241b8 Find enclosing subprogram info. 
llvm-svn: 83922
 2009-10-12 23:11:24 +00:00
Devang Patel
8abee488dc Set default location for a function if it is not set. 
llvm-svn: 83921
 2009-10-12 23:10:55 +00:00
Kevin Enderby
c4125fbeb8 Fix two warnings about unused variables that are only used in assert() calls. 
llvm-svn: 83917
 2009-10-12 22:51:49 +00:00