5aef638057
system_error: Add fixme.
...
llvm-svn: 120059
2010-11-23 21:09:11 +00:00
0488d564e1
Rename SimplifyDistributed to the more meaningfull name SimplifyByFactorizing.
...
llvm-svn: 120051
2010-11-23 20:42:39 +00:00
94a622af4c
The srem -> urem transform is not safe for any divisor that's not a power of two.
...
E.g. -5 % 5 is 0 with srem and 1 with urem.
Also addresses Frits van Bommel's comments.
llvm-svn: 120049
2010-11-23 20:33:57 +00:00
433c1679cf
Replace calls to ConstantFoldInstruction with calls to SimplifyInstruction
...
in two places that are really interested in simplified instructions, not
constants.
llvm-svn: 120044
2010-11-23 20:26:33 +00:00
bb2cd025a9
Constant folding here is pointless, because InstructionSimplify
...
(which does constant folding and more) is called a few lines
later.
llvm-svn: 120042
2010-11-23 20:24:21 +00:00
8e21bf84e8
Move the ARM reloc constants to Support/ELF.h
...
llvm-svn: 120035
2010-11-23 19:40:36 +00:00
d7d2cf7842
Recognize sign/zero-extended constant BUILD_VECTORs for VMULL operations.
...
We need to check if the individual vector elements are sign/zero-extended
values. For now this only handles constants values. Radar 8687140.
llvm-svn: 120034
2010-11-23 19:38:38 +00:00
b91ae1ac52
Fix copy-and-paste error in exception message.
...
llvm-svn: 120033
2010-11-23 19:38:34 +00:00
b5afa65b0a
InstCombine: Reduce "X shift (A srem B)" to "X shift (A urem B)" iff B is positive.
...
This allows to transform the rem in "1 << ((int)x % 8);" to an and.
llvm-svn: 120028
2010-11-23 18:52:42 +00:00
60813f96e0
Propagate LeftDistributes and RightDistributes into their only uses.
...
Stylistic improvement suggested by Frits van Bommel.
llvm-svn: 120026
2010-11-23 15:28:14 +00:00
22df741687
Fix typo pointed out by Frits van Bommel and Marius Wachtler.
...
llvm-svn: 120025
2010-11-23 15:25:34 +00:00
adc7771f18
Exploit distributive laws (eg: And distributes over Or, Mul over Add, etc) in a
...
fairly systematic way in instcombine. Some of these cases were already dealt
with, in which case I removed the existing code. The case of Add has a bunch of
funky logic which covers some of this plus a few variants (considers shifts to be
a form of multiplication), which I didn't touch. The simplification performed is:
A*B+A*C -> A*(B+C). The improvement is to do this in cases that were not already
handled [such as A*B-A*C -> A*(B-C), which was reported on the mailing list], and
also to do it more often by not checking for "only one use" if "B+C" simplifies.
llvm-svn: 120024
2010-11-23 14:23:47 +00:00
e1b6c273b8
Division by pow-of-2 is not cheap on SPU, do it with
...
shifts.
llvm-svn: 120022
2010-11-23 13:27:59 +00:00
f6c05b1d01
Implement the rex64 prefix.
...
llvm-svn: 120017
2010-11-23 11:23:24 +00:00
a021988d64
Expand a little on the description of what InstructionSimplify does.
...
llvm-svn: 120016
2010-11-23 10:50:08 +00:00
763dec0ab8
Clarify that constant folding of instructions applies when all operands
...
are constant. There was in fact one exception to this (phi nodes) - so
remove that exception (InstructionSimplify handles this so there should
be no loss).
llvm-svn: 120015
2010-11-23 10:16:18 +00:00
5c1d4e3b1e
Invalidate the layout on any relaxation, not just Instructions. Bug found by David Meyer.
...
While here, remove unused argument and rename UpdateForSlide to Invalidate.
llvm-svn: 120009
2010-11-23 08:08:33 +00:00
3c7cab1402
Produce a relocation for pcrel absolute values. Based on a patch by David Meyer.
...
llvm-svn: 120006
2010-11-23 07:20:12 +00:00
767a389fa5
Optimize a common case in the Lengauer-Tarjan dominators algorithm. This gives a
...
9.7% speedup running domtree on test-suite.
Reviewed by Chris Lattner.
llvm-svn: 120003
2010-11-23 06:32:37 +00:00
2dd97d2d60
Revert functionality doug added in r98575 that was never
...
documented and only used by some clang stuff I just removed.
llvm-svn: 120002
2010-11-23 06:09:51 +00:00
6e13aa1d3b
Reuse data fragments while lowering. Patch by David Meyer.
...
llvm-svn: 119999
2010-11-23 05:49:35 +00:00
19b96fd4ee
Fix formatting nits in the coding standards. Reviewed by clattner.
...
llvm-svn: 119998
2010-11-23 05:03:07 +00:00
a5f868ce03
fix this harder.
...
llvm-svn: 119994
2010-11-23 04:26:12 +00:00
13b981b26f
fix a bug I introduced on the other side of the #ifdef
...
llvm-svn: 119993
2010-11-23 04:19:56 +00:00
8bec7227d4
reimplement SwapByteOrder.h in terms of overloading instead of
...
being in terms of excessively complex template logic.
llvm-svn: 119992
2010-11-23 04:04:25 +00:00
527da1b6e2
Renaming ISD::BIT_CONVERT to ISD::BITCAST to better reflect the LLVM IR concept.
...
llvm-svn: 119990
2010-11-23 03:31:01 +00:00
4329e078ac
add a 'LLVMConstIntOfArbitraryPrecision' api to the C api,
...
patch by Greg Pfeil!
llvm-svn: 119989
2010-11-23 02:47:22 +00:00
e5afa15b77
duncan's spider sense was right, I completely reversed the condition
...
on this instcombine xform. This fixes a miscompilation of 403.gcc.
llvm-svn: 119988
2010-11-23 02:42:04 +00:00
adc29567fc
filecheckize
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llvm-svn: 119987
2010-11-23 02:26:52 +00:00
767a1e9adc
Fixed some style issues (no _, no spc after !)
...
llvm-svn: 119986
2010-11-22 22:05:16 +00:00
6e39a50fd5
Remove duplicated constants. Thanks to Jason for noticing it.
...
llvm-svn: 119985
2010-11-22 21:49:05 +00:00
f1ebb63161
InstCombine: Implement X - A*-B -> X + A*B.
...
llvm-svn: 119984
2010-11-22 20:31:27 +00:00
16b75262c4
Make the <ARCH>ELFObjectWriter statics private
...
llvm-svn: 119982
2010-11-22 18:57:00 +00:00
84ffdd5cf1
Fix misplaced statics.
...
llvm-svn: 119981
2010-11-22 18:47:05 +00:00
a262546df7
Kill trailing whitespace
...
llvm-svn: 119979
2010-11-22 18:42:07 +00:00
7c7d0ef287
Refactor the ELFRelocationEntry (pull up) and move the arch-specific statics to inside the class where it belongs.
...
Next step is to rationally break apart the RecordRelocation()
Probably the step will be to have 1 member function for ech slot of the ELFRelocationEntry()
llvm-svn: 119978
2010-11-22 18:41:13 +00:00
eb56dca4fd
Fix epilogue codegen to avoid leaving the stack pointer in an invalid
...
state. Previously Thumb2 would restore sp from fp like this:
mov sp, r7
sub, sp, #4
If an interrupt is taken after the 'mov' but before the 'sub', callee-saved
registers might be clobbered by the interrupt handler. Instead, try
restoring directly from sp:
add sp, #4
Or, if necessary (with VLA, etc.) use a scratch register to compute sp and
then restore it:
sub.w r4, r7, #8
mov sp, r7
rdar://8465407
llvm-svn: 119977
2010-11-22 18:12:04 +00:00
abc0204bf6
Add a newline.
...
llvm-svn: 119976
2010-11-22 17:10:20 +00:00
3c60f755c3
llvmc: Make -march/-mcpu/-mtune behaviour more consistent with gcc.
...
llvm-svn: 119975
2010-11-22 17:10:09 +00:00
c133c54426
If a GEP index simply advances by multiples of a type of zero size,
...
then replace the index with zero.
llvm-svn: 119974
2010-11-22 16:32:50 +00:00
77d11d054c
Fix a bug with extractelement on SPU.
...
In the attached testcase, the element was
never extracted (missing rotate).
llvm-svn: 119973
2010-11-22 16:28:26 +00:00
3c227b0b89
Add basic CFI methods to the streamer interface.
...
llvm-svn: 119972
2010-11-22 14:27:24 +00:00
8a0f486e36
Move the "gep undef" -> "undef" transform from instcombine to
...
InstructionSimplify.
llvm-svn: 119970
2010-11-22 13:42:49 +00:00
556f203d64
Remove some #includes.
...
llvm-svn: 119967
2010-11-22 11:53:17 +00:00
24656c9583
Implement the "if (X == 6 || X == 4)" -> "if ((X|2) == 6)" optimization.
...
This currently only catches the most basic case, a two-case switch, but can be
extended later.
llvm-svn: 119964
2010-11-22 09:45:38 +00:00
c6648eb4c3
Don't keep track of inserted phis in PromoteMemoryToRegister: the information
...
is never used. Patch by Cameron Zwarich.
llvm-svn: 119963
2010-11-22 09:41:24 +00:00
5cadccc4ea
Fix a compiler warning about Kind being used uninitialized
...
when assertions are disabled.
llvm-svn: 119962
2010-11-22 09:38:00 +00:00
37b0736bdc
Pseudos default to 4byte size, let the instruction size field notice
...
that branch tables are special.
llvm-svn: 119954
2010-11-21 23:38:19 +00:00
7699d6cfe9
Implement ELF object file writing support for the MBlaze backend. Its not perfect yet, but it works for many tests.
...
llvm-svn: 119952
2010-11-21 22:06:28 +00:00
f1d3800e65
Implement branch analysis in the MBlaze backend.
...
llvm-svn: 119951
2010-11-21 21:53:36 +00:00
f4efd582ad
Make it a little bit more explicit that the MBlaze backend only supports upto
...
32-bit immediate values.
llvm-svn: 119950
2010-11-21 21:39:46 +00:00
7493e30d42
Fix an error in the MBlaze delay slot filler where instructions that already
...
fill a delay slot are moved to fill a different delay slot.
llvm-svn: 119949
2010-11-21 21:36:12 +00:00
fc9aead6fd
fix comment
...
llvm-svn: 119948
2010-11-21 19:05:34 +00:00
5d2262dc76
apparently tailcalls are better on darwin/x86-64 than on linux?
...
llvm-svn: 119947
2010-11-21 18:59:20 +00:00
585dfa2b3d
Initialize MemDep's TD member so buildbots don't trip over an uninitialized pointer (TD is passed to PHITransAddr).
...
I wonder why this didn't explode earlier.
llvm-svn: 119944
2010-11-21 15:21:46 +00:00
cf4bceba49
Add a rather pointless InstructionSimplify transform, inspired by recent constant
...
folding improvements: if P points to a type of size zero, turn "gep P, N" into "P".
More generally, if a gep index type has size zero, instcombine could replace the
index with zero, but that is not done here.
llvm-svn: 119942
2010-11-21 13:53:09 +00:00
1f86be9164
Fix spelling.
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llvm-svn: 119941
2010-11-21 12:43:13 +00:00
22db31305f
More Thumb encodings.
...
llvm-svn: 119940
2010-11-21 11:49:36 +00:00
c01d679928
Add encoding for ARM "trap" instruction.
...
llvm-svn: 119938
2010-11-21 11:05:29 +00:00
219dabdf68
The "trap" instruction is one of this which doesn't have a condition code. Hack
...
the code to not add a "condition code" if it's trap.
llvm-svn: 119937
2010-11-21 10:56:05 +00:00
3acd02706a
- Give "trap" the correct encoding, at least according to Darwin's assembler.
...
- Add comments saying where the encodings for other instructions came from.
llvm-svn: 119936
2010-11-21 10:55:23 +00:00
6ce038082b
apply Dan's fix for PR8268 which allows constant folding to handle indexes over
...
zero sized elements. This allows us to compile:
#include <string>
void foo() { std::string s; }
into an empty function.
llvm-svn: 119933
2010-11-21 08:39:01 +00:00
526cce12f5
add some helper methods for asmprinter flags, from PR8417
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llvm-svn: 119932
2010-11-21 08:30:55 +00:00
b4cd1819fa
implement PR8524, apparently mainline gas accepts movq as an alias for movd
...
when transfering between i64 gprs and mmx regs.
llvm-svn: 119931
2010-11-21 08:18:57 +00:00
5957229659
rework some DSE paths to use the newly-public "getPointerDependencyFrom"
...
method in MemDep instead of inserting an instruction, doing a query,
then removing it. Neither operation is effectively cached.
llvm-svn: 119930
2010-11-21 08:06:10 +00:00
e69672c44f
the getLocationForSource/Dest methods can be static.
...
llvm-svn: 119929
2010-11-21 08:05:25 +00:00
663ba91cc6
add "getLocation" method to AliasAnalysis for getting the source and
...
destination location of a memcpy/memmove. I'm not clear about whether
TBAA works on these, so I'm leaving it out for now. Dan, please revisit
this when convenient.
llvm-svn: 119928
2010-11-21 07:51:27 +00:00
e48c31ce33
implement PR8576, deleting dead stores with intervening may-alias stores.
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llvm-svn: 119927
2010-11-21 07:34:32 +00:00
6e22221b37
file checkize
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llvm-svn: 119926
2010-11-21 07:32:40 +00:00
9165d9d2ac
add some random notes.
...
llvm-svn: 119925
2010-11-21 07:05:31 +00:00
7e484e0be7
Use by-name rather than by-order operand matching for some NEON encodings.
...
llvm-svn: 119923
2010-11-21 06:47:06 +00:00
f7e896138e
optimize:
...
void a(int x) { if (((1<<x)&8)==0) b(); }
into "x != 3", which occurs over 100 times in 403.gcc but in no
other program in llvm-test.
llvm-svn: 119922
2010-11-21 06:44:42 +00:00
9de0176ef8
tail calls on x86 are implemented.
...
llvm-svn: 119920
2010-11-21 06:10:27 +00:00
e040a46eb3
BR_JTadd is ARM-only, so use the proper pseudo class to get the predicate.
...
llvm-svn: 119918
2010-11-21 01:26:01 +00:00
26cb15a549
Handle PCRel relocations with absolute values. Fixes PR8656.
...
llvm-svn: 119917
2010-11-21 00:48:25 +00:00
58f9f58716
Implement PR8644: forwarding a memcpy value to a byval,
...
allowing the memcpy to be eliminated.
Unfortunately, the requirements on byval's without explicit
alignment are really weak and impossible to predict in the
mid-level optimizer, so this doesn't kick in much with current
frontends. The fix is to change clang to set alignment on all
byval arguments.
llvm-svn: 119916
2010-11-21 00:28:59 +00:00
d78dbee431
a byval argument without an align can have an arbitrary alignment
...
requirement on the input pointer.
llvm-svn: 119914
2010-11-20 23:49:06 +00:00
c31de25137
A few more thumb instruction MC encodings.
...
llvm-svn: 119913
2010-11-20 22:52:33 +00:00
0a3c28bd6b
Rewrite address handling to use a structure with all the possible address
...
mode variables. Handle frame indexes in load/store and allocas again.
llvm-svn: 119912
2010-11-20 22:38:27 +00:00
d0aec3bf64
STRH only needs the additional operand, not t2STRH. Also invert conditional
...
to match the one from the load emitter above.
llvm-svn: 119911
2010-11-20 22:01:38 +00:00
ddd1b7b801
Simplify code. No change in functionality.
...
llvm-svn: 119908
2010-11-20 18:43:35 +00:00
da17c921ba
Test commit: Fix two -Asserts mode warnings in StringMap.h.
...
llvm-svn: 119907
2010-11-20 18:37:24 +00:00
36590fc72a
Make this compile on case-sensitive file systemsw
...
llvm-svn: 119905
2010-11-20 16:14:57 +00:00
4687778398
Move some more hooks to TargetFrameInfo
...
llvm-svn: 119904
2010-11-20 15:59:32 +00:00
f6fb58a216
Silence Release build warnings about unused functions.
...
llvm-svn: 119903
2010-11-20 15:53:24 +00:00
4fd9b685ff
Disable warning C4291 on MSVC. Caused because class AttributeList provides a non implemented operator delete without a corresponding new.
...
llvm-svn: 119902
2010-11-20 15:39:03 +00:00
7c601ded34
On X86, MEMBARRIER, MFENCE, SFENCE, LFENCE are not target memory intrinsics,
...
so don't claim they are. They are allocated using DAG.getNode, so attempts
to access MemSDNode fields results in reading off the end of the allocated
memory. This fixes crashes with "llc -debug" due to debug code trying to
print MemSDNode fields for these barrier nodes (since the crashes are not
deterministic, use valgrind to see this). Add some nasty checking to try
to catch this kind of thing in the future.
llvm-svn: 119901
2010-11-20 11:25:00 +00:00
cf7fefb25c
Removing the useless test that I added recently. It was meant as an example, but not complicated enough to merit another test.
...
llvm-svn: 119898
2010-11-20 07:26:51 +00:00
ada75c5ad1
RABasic fix. Regalloc is responsible for updating block live ins.
...
llvm-svn: 119896
2010-11-20 02:57:05 +00:00
799ec1c4d6
Whitespace.
...
llvm-svn: 119895
2010-11-20 02:43:55 +00:00
40e78b4da0
Fix old GCC build error.
...
llvm-svn: 119884
2010-11-20 01:24:43 +00:00
284326bd69
Add more Thumb add instruction encodings.
...
llvm-svn: 119883
2010-11-20 01:18:47 +00:00
fe1de03629
Add Thumb encodings for some add instructions.
...
llvm-svn: 119882
2010-11-20 01:00:29 +00:00
e60fd5a9db
Add more encodings for Thumb instructions.
...
llvm-svn: 119881
2010-11-20 00:53:35 +00:00
8bf9e546d4
Detemplatize NodeRef.
...
It is now possible to navigate the B+-tree using NodeRef::subtree() and
NodeRef::size() without knowing the key and value template types used in the
tree.
llvm-svn: 119880
2010-11-20 00:49:00 +00:00
3864c518c2
Rename NodeBase::{key,val} as {first,second} and swap the BranchNode arrays such
...
that the noderefs are the first member in the object.
This is in preparation of detemplatization of tree navigation.
llvm-svn: 119879
2010-11-20 00:48:57 +00:00
0914d44fa4
Have the getAddrMode3OpValue() function in ARMCodeEmitter.cpp produce the same
...
value that the one in ARMMCCodeEmitter.cpp does.
llvm-svn: 119878
2010-11-20 00:26:37 +00:00
54df187f25
Check for _setjmp too, because it's also used.
...
llvm-svn: 119875
2010-11-20 00:03:09 +00:00
6ae70b2e0f
Implement IntervalMap destructor.
...
Key and value objects may not be destructed instantly when they are erased from
the container, but they will be destructed eventually by the IntervalMap
destructor.
llvm-svn: 119873
2010-11-19 23:28:59 +00:00
c041268c8c
Implement IntervalMap::clear().
...
llvm-svn: 119872
2010-11-19 23:28:57 +00:00
Michael J. Spencer