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Author SHA1 Message Date
Chris Lattner
e6d7915f62 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
Wesley Peck
d589353ad0 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
Chris Lattner
d935e210ee add a 'LLVMConstIntOfArbitraryPrecision' api to the C api, 
patch by Greg Pfeil!

llvm-svn: 119989
 2010-11-23 02:47:22 +00:00
Chris Lattner
41281bd30f 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
Chris Lattner
c0fcc364c0 filecheckize 
llvm-svn: 119987
 2010-11-23 02:26:52 +00:00
Jason W Kim
287d5fb10b Fixed some style issues (no _, no spc after !) 
llvm-svn: 119986
 2010-11-22 22:05:16 +00:00
Rafael Espindola
492580fa9a Remove duplicated constants. Thanks to Jason for noticing it. 
llvm-svn: 119985
 2010-11-22 21:49:05 +00:00
Benjamin Kramer
b5a2a81094 InstCombine: Implement X - A*-B -> X + A*B. 
llvm-svn: 119984
 2010-11-22 20:31:27 +00:00
Jason W Kim
0941164ddb Make the <ARCH>ELFObjectWriter statics private 
llvm-svn: 119982
 2010-11-22 18:57:00 +00:00
Jason W Kim
243d3f5d8c Fix misplaced statics. 
llvm-svn: 119981
 2010-11-22 18:47:05 +00:00
Jason W Kim
dea9f17ab2 Kill trailing whitespace 
llvm-svn: 119979
 2010-11-22 18:42:07 +00:00
Jason W Kim
e2fece2f4c 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
Evan Cheng
e6d55cd247 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
Mikhail Glushenkov
cfae3f46f9 Add a newline. 
llvm-svn: 119976
 2010-11-22 17:10:20 +00:00
Mikhail Glushenkov
946fa2d2ee llvmc: Make -march/-mcpu/-mtune behaviour more consistent with gcc. 
llvm-svn: 119975
 2010-11-22 17:10:09 +00:00
Duncan Sands
73f0559779 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
Kalle Raiskila
8f1131e569 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
Rafael Espindola
e20c3d7c26 Add basic CFI methods to the streamer interface. 
llvm-svn: 119972
 2010-11-22 14:27:24 +00:00
Duncan Sands
ffcd1f61d9 Move the "gep undef" -> "undef" transform from instcombine to 
InstructionSimplify.

llvm-svn: 119970
 2010-11-22 13:42:49 +00:00
Rafael Espindola
5f582e980e Remove some #includes. 
llvm-svn: 119967
 2010-11-22 11:53:17 +00:00
Benjamin Kramer
632a91cba5 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
Duncan Sands
f0224e2119 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
Duncan Sands
99ff019c87 Fix a compiler warning about Kind being used uninitialized 
when assertions are disabled.

llvm-svn: 119962
 2010-11-22 09:38:00 +00:00
Eric Christopher
662ad8ba93 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
Wesley Peck
e25f241e37 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
Wesley Peck
911abf2bc0 Implement branch analysis in the MBlaze backend. 
llvm-svn: 119951
 2010-11-21 21:53:36 +00:00
Wesley Peck
470c56eef5 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
Wesley Peck
d77425e427 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
Chris Lattner
621c62e20d fix comment 
llvm-svn: 119948
 2010-11-21 19:05:34 +00:00
Chris Lattner
dd03f96698 apparently tailcalls are better on darwin/x86-64 than on linux? 
llvm-svn: 119947
 2010-11-21 18:59:20 +00:00
Benjamin Kramer
3fb7d5556c 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
Duncan Sands
c2b128ad7d 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
Duncan Sands
4ef7e7f158 Fix spelling. 
llvm-svn: 119941
 2010-11-21 12:43:13 +00:00
Bill Wendling
c5ab347eb6 More Thumb encodings. 
llvm-svn: 119940
 2010-11-21 11:49:36 +00:00
Bill Wendling
a472e7be70 Add encoding for ARM "trap" instruction. 
llvm-svn: 119938
 2010-11-21 11:05:29 +00:00
Bill Wendling
a017020098 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
Bill Wendling
3cce558ede - 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
Chris Lattner
1b3dffa2d1 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
Chris Lattner
1161b003a0 add some helper methods for asmprinter flags, from PR8417 
llvm-svn: 119932
 2010-11-21 08:30:55 +00:00
Chris Lattner
4aaa7fbb98 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
Chris Lattner
62a3186e3e 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
Chris Lattner
0d1afc82b2 the getLocationForSource/Dest methods can be static. 
llvm-svn: 119929
 2010-11-21 08:05:25 +00:00
Chris Lattner
a39a40d351 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
Chris Lattner
3a0edfb37c implement PR8576, deleting dead stores with intervening may-alias stores. 
llvm-svn: 119927
 2010-11-21 07:34:32 +00:00
Chris Lattner
32a16bce7a file checkize 
llvm-svn: 119926
 2010-11-21 07:32:40 +00:00
Chris Lattner
ed3b3d47f6 add some random notes. 
llvm-svn: 119925
 2010-11-21 07:05:31 +00:00
Owen Anderson
0ec4da72fc Use by-name rather than by-order operand matching for some NEON encodings. 
llvm-svn: 119923
 2010-11-21 06:47:06 +00:00
Chris Lattner
908a01328c 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
Chris Lattner
09bf382b8f tail calls on x86 are implemented. 
llvm-svn: 119920
 2010-11-21 06:10:27 +00:00
Jim Grosbach
1476bfec1e 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