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Author SHA1 Message Date
Chris Lattner
79b967bd9f duncan's spider sense was right, I completely reversed the condition 
on this instcombine xform.  This fixes a miscompilation of 403.gcc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119988 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-23 02:42:04 +00:00
Chris Lattner
2e1a75d6f4 filecheckize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119987 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-23 02:26:52 +00:00
Jason W Kim
1090742689 Fixed some style issues (no _, no spc after !) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119986 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 22:05:16 +00:00
Rafael Espindola
d80f8d08ce Remove duplicated constants. Thanks to Jason for noticing it. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119985 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 21:49:05 +00:00
Benjamin Kramer
93f8455d73 InstCombine: Implement X - A*-B -> X + A*B. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119984 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 20:31:27 +00:00
Jason W Kim
28ef0a5719 Make the <ARCH>ELFObjectWriter statics private 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119982 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 18:57:00 +00:00
Jason W Kim
ccbe000e09 Fix misplaced statics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119981 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 18:47:05 +00:00
Jason W Kim
858e7506e1 Kill trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119979 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 18:42:07 +00:00
Jason W Kim
4a511f0be2 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()





git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119978 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 18:41:13 +00:00
Evan Cheng
ab5c703fdb 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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119977 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 18:12:04 +00:00
Mikhail Glushenkov
4d5a299790 Add a newline. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119976 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 17:10:20 +00:00
Mikhail Glushenkov
028941379d llvmc: Make -march/-mcpu/-mtune behaviour more consistent with gcc. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119975 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 17:10:09 +00:00
Duncan Sands
a63395a30f If a GEP index simply advances by multiples of a type of zero size, 
then replace the index with zero.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119974 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 16:32:50 +00:00
Kalle Raiskila
d87e571e62 Fix a bug with extractelement on SPU. 
In the attached testcase, the element was
never extracted (missing rotate).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119973 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 16:28:26 +00:00
Rafael Espindola
cdfecc8759 Add basic CFI methods to the streamer interface. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119972 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 14:27:24 +00:00
Duncan Sands
85bbff6c94 Move the "gep undef" -> "undef" transform from instcombine to 
InstructionSimplify.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119970 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 13:42:49 +00:00
Rafael Espindola
ad8aaa069c Remove some #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119967 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 11:53:17 +00:00
Benjamin Kramer
ce750f0332 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119964 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 09:45:38 +00:00
Duncan Sands
b05099bf42 Don't keep track of inserted phis in PromoteMemoryToRegister: the information 
is never used.  Patch by Cameron Zwarich.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119963 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 09:41:24 +00:00
Duncan Sands
3d93893895 Fix a compiler warning about Kind being used uninitialized 
when assertions are disabled.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119962 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-22 09:38:00 +00:00
Eric Christopher
9d89311df8 Pseudos default to 4byte size, let the instruction size field notice 
that branch tables are special.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119954 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 23:38:19 +00:00
Wesley Peck
4b04713423 Implement ELF object file writing support for the MBlaze backend. Its not perfect yet, but it works for many tests. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119952 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 22:06:28 +00:00
Wesley Peck
46a928b864 Implement branch analysis in the MBlaze backend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119951 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 21:53:36 +00:00
Wesley Peck
6e749f31c6 Make it a little bit more explicit that the MBlaze backend only supports upto 
32-bit immediate values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119950 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 21:39:46 +00:00
Wesley Peck
5437ba48ce 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119949 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 21:36:12 +00:00
Chris Lattner
6ffdd45d86 fix comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119948 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 19:05:34 +00:00
Chris Lattner
8bc1e45295 apparently tailcalls are better on darwin/x86-64 than on linux? 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119947 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 18:59:20 +00:00
Benjamin Kramer
dd061b2854 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119944 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 15:21:46 +00:00
Duncan Sands
e60d79faf7 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119942 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 13:53:09 +00:00
Duncan Sands
e58391073f Fix spelling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119941 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 12:43:13 +00:00
Bill Wendling
dcf0a47b76 More Thumb encodings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119940 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 11:49:36 +00:00
Bill Wendling
af2b573614 Add encoding for ARM "trap" instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119938 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 11:05:29 +00:00
Bill Wendling
9717fa9f29 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119937 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 10:56:05 +00:00
Bill Wendling
7d0affdf02 - Give "trap" the correct encoding, at least according to Darwin's assembler. 
- Add comments saying where the encodings for other instructions came from.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119936 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 10:55:23 +00:00
Chris Lattner
c1da204c43 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119933 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 08:39:01 +00:00
Chris Lattner
cbd323ad52 add some helper methods for asmprinter flags, from PR8417 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119932 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 08:30:55 +00:00
Chris Lattner
cbf5d74e6a implement PR8524, apparently mainline gas accepts movq as an alias for movd 
when transfering between i64 gprs and mmx regs.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119931 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 08:18:57 +00:00
Chris Lattner
604f6fe553 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119930 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 08:06:10 +00:00
Chris Lattner
16f7993e0d the getLocationForSource/Dest methods can be static. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119929 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 08:05:25 +00:00
Chris Lattner
e90c5cb747 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119928 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 07:51:27 +00:00
Chris Lattner
f6f1f062cc implement PR8576, deleting dead stores with intervening may-alias stores. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119927 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 07:34:32 +00:00
Chris Lattner
b7dfb970e6 file checkize 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119926 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 07:32:40 +00:00
Chris Lattner
3e41106de4 add some random notes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119925 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 07:05:31 +00:00
Owen Anderson
aa54524a44 Use by-name rather than by-order operand matching for some NEON encodings. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119923 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 06:47:06 +00:00
Chris Lattner
75d8f599e7 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.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119922 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 06:44:42 +00:00
Chris Lattner
79a980ad85 tail calls on x86 are implemented. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119920 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 06:10:27 +00:00
Jim Grosbach
0eb49c57f0 BR_JTadd is ARM-only, so use the proper pseudo class to get the predicate. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119918 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 01:26:01 +00:00
Rafael Espindola
12203cc7c3 Handle PCRel relocations with absolute values. Fixes PR8656. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119917 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 00:48:25 +00:00
Chris Lattner
2f5f90ad3e 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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119916 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-21 00:28:59 +00:00
Chris Lattner
a6fd81dd7f a byval argument without an align can have an arbitrary alignment 
requirement on the input pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119914 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-11-20 23:49:06 +00:00