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68258 Commits

Author SHA1 Message Date
Bob Wilson c3ff538dcf Fix misspelled target triples in MC/ARM test commands. 
llvm-svn: 121901
 2010-12-15 22:14:01 +00:00
Dan Gohman 05b18f143f Reapply r121886, and also update DecomposeGEPExpression to keep 
it in sync.

llvm-svn: 121895
 2010-12-15 20:49:55 +00:00
Jakob Stoklund Olesen c7f6d79450 Add SlotIndexes::getMBBRange() to get the range of a basic block in a single 
lookup.

llvm-svn: 121893
 2010-12-15 20:40:22 +00:00
Dan Gohman d02b65982e Revert r121886. DecomposeGEPExpression needs to be kept 
in sync.

llvm-svn: 121892
 2010-12-15 20:39:25 +00:00
Wesley Peck 0c558b2080 Lower the MBlaze target specific calling conventions for "interrupt_handler" 
and "save_volatiles" correctly. This completes the custom calling convention
functionality changes for the MBlaze backend that were started in 121888.

llvm-svn: 121891
 2010-12-15 20:27:28 +00:00
Wesley Peck 1ee1d63649 Adding target specific calling conventions to support the MBlaze GCC function 
attributes "interrupt_handle" and "save_volatiles". Support for lowering these
correctly will be in an upcoming commit.

llvm-svn: 121888
 2010-12-15 20:14:09 +00:00
Dan Gohman 949ab7889c Strengthen GetUnderlyingObject using InstructionSimplify. 
While LLVM's main design is that analysis code shouldn't
go out of its way to understand code which hasn't been
InstCombined, analysis utility routines like this can
find themselves being called in the middle of transform
passes when instcombine hasn't had a chance to run.

llvm-svn: 121886
 2010-12-15 20:10:26 +00:00
Dan Gohman a4fcd2418d Move Value::getUnderlyingObject to be a standalone 
function so that it can live in Analysis instead of
VMCore.

llvm-svn: 121885
 2010-12-15 20:02:24 +00:00
Wesley Peck fdb174b6ef Add some special purpose register definitions to the MBlaze backend and cleanup some old, unused floating point register definitions. 
llvm-svn: 121882
 2010-12-15 19:35:36 +00:00
Owen Anderson c8fa5fcc42 Fix typo in r121875. 
llvm-svn: 121880
 2010-12-15 19:24:24 +00:00
Jim Grosbach 23477c2ee5 Tweak a few pseudo-inst pattern base classes. 
llvm-svn: 121878
 2010-12-15 19:03:16 +00:00
Nick Lewycky 11678bd299 Clean up some of LVI: 
* mergeIn now uses constant folding for constants that are provably not-equal.
 * sink some sanity checks from the get*() methods into the mark*() methods, to ensure that we never have a constant/notconstant ConstantInt
 * some textual cleanups, whitespace changes, removing "else" after return, that sort of thing.

llvm-svn: 121877
 2010-12-15 18:57:18 +00:00
Jim Grosbach d42257ceef The new t2LEApcrel* pseudo instructions need the size specified. 
rdar://8768390

llvm-svn: 121876
 2010-12-15 18:48:45 +00:00
Owen Anderson 622ad5170b Implement cleanups suggested by Daniel. 
llvm-svn: 121875
 2010-12-15 18:48:27 +00:00
Dan Gohman b3f04f468e Document some more AliasAnalysis infrastructure limitations. 
llvm-svn: 121874
 2010-12-15 18:45:20 +00:00
Jakob Stoklund Olesen 1066ef6b24 Fix build. 
llvm-svn: 121872
 2010-12-15 18:07:48 +00:00
Jakob Stoklund Olesen 28e769cc54 Detect and enumerate bypass loops. 
Bypass loops have the current live range live through, but contain no uses or
defs. Splitting around a bypass loop can free registers for other uses inside
the loop by spilling the split range.

llvm-svn: 121871
 2010-12-15 17:49:52 +00:00
Jakob Stoklund Olesen 4391f34aba Separate SplitAnalysis::getSplitLoops(). 
This method returns the set of loops with uses that are candidates for
splitting.

llvm-svn: 121870
 2010-12-15 17:41:19 +00:00
Bob Wilson 9168a4f1c2 Add a Neon intrinsic test generator. 
This is still a WIP.  It's already good enough to expose a few bugs, though.

llvm-svn: 121868
 2010-12-15 16:58:45 +00:00
Bob Wilson 276f1ca897 Fix Neon intrinsic immediate range checking for some double-register operands. 
Some quad-register intrinsics with lane operands only take a double-register
operand for the vector containing the lane.  The valid range of lane numbers
is then half as big as you would expect from the quad-register type.
Note: This currently has no effect because those intrinsics are now handled
entirely in the header file using __builtin_shufflevector, which does its own
range checking, but I want to use this for generating tests.

llvm-svn: 121867
 2010-12-15 16:58:42 +00:00
Duncan Sands 0a2c416894 Move Sub simplifications and additional Add simplifications out of 
instcombine and into InstructionSimplify.

llvm-svn: 121861
 2010-12-15 14:07:39 +00:00
Duncan Sands 019a418808 If we detect that the instruction we are simplifying is unreachable, arrange for 
it to be replaced by undef rather than not replaced at all, the idea being that
this may reduce the amount of work done by whoever called InstructionSimplify.

llvm-svn: 121860
 2010-12-15 11:02:22 +00:00
Frits van Bommel 3d1803495e Teach jump threading to "look through" a select when the branch direction of a terminator depends on it. 
When it sees a promising select it now tries to figure out whether the condition of the select is known in any of the predecessors and if so it maps the operands appropriately.

llvm-svn: 121859
 2010-12-15 09:51:20 +00:00
Bill Wendling 03e7576dee Add fixups for Thumb LDR/STR instructions. 
llvm-svn: 121858
 2010-12-15 08:51:02 +00:00
Rafael Espindola 844f6b6cfb Relax alignment fragments. 
With this we don't need the EffectiveSize field anymore. Without that field
LayoutFragment only updates offsets and we don't need to invalidate the
current fragment when it is relaxed (only the ones following it).

This is also a very small improvement in the accuracy of the layout info as
we now use the after relaxation size immediately.

llvm-svn: 121857
 2010-12-15 08:45:53 +00:00
Rafael Espindola 8911d03504 Patch by David Meyer to avoid a O(N^2) behaviour when relaxing fragments. 
Since we now don't update addresses so early, we might relax a bit more than
we need to. This is simillar to the issue in PR8467.

llvm-svn: 121856
 2010-12-15 07:39:29 +00:00
Chris Lattner 5174921b5b add another overflow idiom 
llvm-svn: 121854
 2010-12-15 07:28:58 +00:00
Chris Lattner 2e33985300 add a note about overflow idiom recognition. 
llvm-svn: 121853
 2010-12-15 07:25:55 +00:00
Rafael Espindola f80f18a11a Generalize an assert. 
llvm-svn: 121851
 2010-12-15 07:12:24 +00:00
Chris Lattner 27ecda1efd add a shift/imul missed optimization 
llvm-svn: 121850
 2010-12-15 07:10:43 +00:00
Chris Lattner aded09f27f add a note about a SPEC hack that gcc mainline does. 
llvm-svn: 121849
 2010-12-15 06:38:24 +00:00
Chris Lattner 15090e1eb0 take care of some todos, transforming [us]mul_lohi into 
a wider mul if the wider mul is legal.

llvm-svn: 121848
 2010-12-15 06:04:19 +00:00
Chris Lattner c3301e970c merge two tests 
llvm-svn: 121847
 2010-12-15 05:58:59 +00:00
Chris Lattner b86dceea1b when transforming a MULHS into a wider MUL, there is no need to SRA the 
result, the top bits are truncated off anyway, just use SRL.

llvm-svn: 121846
 2010-12-15 05:51:39 +00:00
Chris Lattner e893e2601e make qsort predicate more conformant by returning 0 for equal values. 
llvm-svn: 121838
 2010-12-15 04:52:41 +00:00
Chris Lattner 89dcb687bc various cleanups to tblgen, patch by Garrison Venn! 
llvm-svn: 121837
 2010-12-15 04:48:22 +00:00
Bill Wendling 5d32b70967 Add mention that we support FreeBSD/amd64. 
llvm-svn: 121832
 2010-12-15 01:35:55 +00:00
Kevin Enderby 4886cc8be7 Add some more MC tests for ARM arithmetic instructions that update or don't 
update the condition codes.  These come from my test generator and are just
the ones that MC currently assembles correctly.

llvm-svn: 121830
 2010-12-15 01:24:36 +00:00
Mikhail Glushenkov 224404f851 Copy-pastos. 
llvm-svn: 121829
 2010-12-15 01:22:34 +00:00
Mikhail Glushenkov a59a53f455 Remove ConvertToMAttrImpl, it became too '-march'-specific. 
llvm-svn: 121828
 2010-12-15 01:22:29 +00:00
Mikhail Glushenkov 63e51958f1 llvmc: Support -march arguments that should be forwarded to llc as -mcpu. 
llvm-svn: 121827
 2010-12-15 01:22:25 +00:00
Mikhail Glushenkov 8dced6b08e llvmc: Better -mfpu/-mcpu support for ARM & PPC. 
llvm-svn: 121826
 2010-12-15 01:22:20 +00:00
Mikhail Glushenkov 8084dc957a llvmc: more complete -march table for ARM. 
llvm-svn: 121825
 2010-12-15 01:22:15 +00:00
Mikhail Glushenkov 0929a09306 llvmc: Support -mabi/-mfloat-abi. 
llvm-svn: 121824
 2010-12-15 01:22:10 +00:00
Mikhail Glushenkov 6e0252c7b1 llvmc: Forward -march/-mcpu/-mtune to as & ld. 
llvm-svn: 121823
 2010-12-15 01:22:05 +00:00
Mikhail Glushenkov 9f9b7051c7 llvmc: make switch options ZeroOrMore by default. 
llvm-svn: 121822
 2010-12-15 01:21:59 +00:00
Bill Wendling 832a5daab5 Reapply r121808 now that the missing patterns have been supplied. 
llvm-svn: 121820
 2010-12-15 01:03:19 +00:00
Bill Wendling 1171e9e81d Add some missing patterns now that tLDRB and tLDRH are split into reg and 
immediate versions.

llvm-svn: 121819
 2010-12-15 00:58:57 +00:00
Owen Anderson 35609d97ae Fix PR8790, another instance where unreachable code can cause instruction simplification to fail, 
this case involve a select that simplifies to itself.

llvm-svn: 121817
 2010-12-15 00:55:35 +00:00
Owen Anderson 15c85c916f Cleanup trailing whitespace. 
llvm-svn: 121816
 2010-12-15 00:52:44 +00:00