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Author SHA1 Message Date
Anton Korobeynikov
fca7d58578 It turns out that this version of gcc is broken (cygwin is well-known in shipping 
of broken/buggy/snapshot-based compilers)

llvm-svn: 70848
 2009-05-04 10:24:46 +00:00
Evan Cheng
9df9768ee5 Make sure to color with only allocatable registers for the specific register class. 
llvm-svn: 70821
 2009-05-04 03:30:11 +00:00
Chris Lattner
6807ddd3d9 * Sink 4 duplicates of edge threading validity checks and DOUT prints into 
ThreadEdge directly.  This shares the code, but is just a refactoring.
* Make JumpThreading compute the set of loop headers and avoid threading
  across them.  This prevents jump threading from forming irreducible 
  loops (goodness) but also prevents it from threading in other cases that
  are beneficial (see the comment above FindFunctionBackedges).

llvm-svn: 70820
 2009-05-04 02:28:08 +00:00
Chris Lattner
b07d558841 Factor loop backedge finding out of CodeGenPrepare into a new 
FindFunctionBackedges function.

llvm-svn: 70819
 2009-05-04 02:25:58 +00:00
Chris Lattner
5c8113fab4 add a range insertion method to SmallSet. 
llvm-svn: 70817
 2009-05-04 02:19:15 +00:00
Evan Cheng
bb12bac53b The stack slots which share the same stack slot after coloring can, but do not have to, use the same register. In fact, they each may have different register class requirements. 
llvm-svn: 70815
 2009-05-04 00:24:50 +00:00
Argyrios Kyrtzidis
e68261749e Revert r70803 for now, it causes a regression. 
llvm-svn: 70811
 2009-05-03 23:27:19 +00:00
Argyrios Kyrtzidis
9e888740d2 Remove an, apparently, leftover MachineModuleInfo::RecordSourceLine declaration. 
llvm-svn: 70804
 2009-05-03 22:11:08 +00:00
Argyrios Kyrtzidis
bb6e4d027c -Remove the DwarfWriter::RecordSourceLine calls from the instruction selectors. 
-Depend on DebugLocs for source line info.

llvm-svn: 70803
 2009-05-03 22:03:35 +00:00
Evan Cheng
a64d6b8822 Typo. 
llvm-svn: 70792
 2009-05-03 19:10:11 +00:00
Chris Lattner
b38edd3714 Remove obsolete wording, the only exception a readnone function can throw 
is the empty set. :)  Thanks to Fritz for pointing this out.

llvm-svn: 70790
 2009-05-03 19:06:00 +00:00
Chris Lattner
abf304f36e be very explicit that readnone/readonly functions can't 
throw exceptions.

llvm-svn: 70788
 2009-05-03 18:49:37 +00:00
Evan Cheng
28aa6c41d1 In some rare cases, the register allocator can spill registers but end up not utilizing registers at all. The fundamental problem is linearscan's backtracking can end up freeing more than one allocated registers. However, reloads and restores might be folded into uses / defs and freed registers might not be used at all. 
VirtRegMap keeps track of allocations so it knows what's not used. As a horrible hack, the stack coloring can color spill slots with *free* registers. That is, it replace reload and spills with copies from and to the free register. It unfold instructions that load and store the spill slot and replace them with register using variants.

Not yet enabled. This is part 1. More coming.

llvm-svn: 70787
 2009-05-03 18:32:42 +00:00
Anton Korobeynikov
df33e5a803 Handle implicit zext in a better way. Shamelessly stolen from x86 backend. 
Thanks for Dan Gohman for suggestion!

llvm-svn: 70782
 2009-05-03 15:50:18 +00:00
Anton Korobeynikov
232363815b Regenerate 
llvm-svn: 70772
 2009-05-03 13:42:23 +00:00
Anton Korobeynikov
15587901c3 Fix typo 
llvm-svn: 70770
 2009-05-03 13:19:57 +00:00
Anton Korobeynikov
46a92ec4d6 Update due to mainline API change 
llvm-svn: 70769
 2009-05-03 13:19:42 +00:00
Anton Korobeynikov
13ed1c4514 Add TODO list :) 
llvm-svn: 70768
 2009-05-03 13:19:24 +00:00
Anton Korobeynikov
8988fea464 Make handling of conditional stuff much more straightforward 
llvm-svn: 70767
 2009-05-03 13:19:09 +00:00
Anton Korobeynikov
d8c42b2dee Temporary disable imm patterns for cmp. Actually, all cmp-related stuff (select_cc, setcc, br_cc). needs to be rethought 
llvm-svn: 70766
 2009-05-03 13:18:50 +00:00
Anton Korobeynikov
e6c8cc6c51 Expand divisions into libcalls 
llvm-svn: 70765
 2009-05-03 13:18:33 +00:00
Anton Korobeynikov
34d22f34a8 Properly handle sdiv / udiv / srem / urem libcalls 
llvm-svn: 70764
 2009-05-03 13:18:16 +00:00
Anton Korobeynikov
54bbd77498 Custom lower SIGN_EXTEND 
llvm-svn: 70763
 2009-05-03 13:17:49 +00:00
Anton Korobeynikov
9103796e69 Some eye-candy 
llvm-svn: 70762
 2009-05-03 13:17:31 +00:00
Anton Korobeynikov
c0ea294fb9 Print function header / footer 
llvm-svn: 70761
 2009-05-03 13:17:11 +00:00
Anton Korobeynikov
f4b4812c83 Fix printing: je => jeq 
llvm-svn: 70760
 2009-05-03 13:16:54 +00:00
Anton Korobeynikov
4b5232c990 Add 8bit shifts 
llvm-svn: 70759
 2009-05-03 13:16:37 +00:00
Anton Korobeynikov
d0e3939bdf Handle logical shift right (at least I hope so :) ) 
llvm-svn: 70758
 2009-05-03 13:16:17 +00:00
Anton Korobeynikov
7dd27f2e41 Handle anyext 
llvm-svn: 70757
 2009-05-03 13:15:57 +00:00
Anton Korobeynikov
baf9278166 Expand all sorts of indirect branches 
llvm-svn: 70755
 2009-05-03 13:15:40 +00:00
Anton Korobeynikov
806b8efb5e Add InsertBranch() hook for tail mergeing 
llvm-svn: 70754
 2009-05-03 13:15:22 +00:00
Anton Korobeynikov
b97b120cf9 Implement bswap 
llvm-svn: 70753
 2009-05-03 13:15:03 +00:00
Anton Korobeynikov
cebc97d79c Properly handle ExternalSymbol's 
llvm-svn: 70752
 2009-05-03 13:14:46 +00:00
Anton Korobeynikov
9b84c6b633 Expand muls (all mulls!) to libcalls for now 
llvm-svn: 70751
 2009-05-03 13:14:25 +00:00
Anton Korobeynikov
7f560f113d Proper name 16 bit libcalls 
llvm-svn: 70750
 2009-05-03 13:14:08 +00:00
Anton Korobeynikov
b4da45ecd8 Add libcall expansion for 16 and 128 bit muls 
llvm-svn: 70749
 2009-05-03 13:13:51 +00:00
Anton Korobeynikov
80d0bdc789 Provide addc and subc 
llvm-svn: 70748
 2009-05-03 13:13:34 +00:00
Anton Korobeynikov
1f80bde7ad Add left shift 
llvm-svn: 70747
 2009-05-03 13:13:17 +00:00
Anton Korobeynikov
d9b4143e47 Add direct branch 
llvm-svn: 70746
 2009-05-03 13:12:58 +00:00
Anton Korobeynikov
c5a13f6a3f It's error-prone to maintain two separate variants of asmprinting stuff, one of which is even used. Drop second (aka 'intel') variant of operands. It can be added later, if needed. 
llvm-svn: 70745
 2009-05-03 13:12:37 +00:00
Anton Korobeynikov
f7943f8df6 Lower select with custom inserted and make condjumps generic 
llvm-svn: 70744
 2009-05-03 13:12:23 +00:00
Anton Korobeynikov
d55d6586ae Add first draft for conditions, conditional branches, etc 
llvm-svn: 70743
 2009-05-03 13:12:06 +00:00
Anton Korobeynikov
2b8085a3f5 Hanle i8 returns 
llvm-svn: 70742
 2009-05-03 13:11:48 +00:00
Anton Korobeynikov
67b1a5c20b Small tweaking 
llvm-svn: 70741
 2009-05-03 13:11:35 +00:00
Anton Korobeynikov
c428224a89 Add prologue/epilogue emission. Fix frame pointer handling. 
llvm-svn: 70740
 2009-05-03 13:11:20 +00:00
Anton Korobeynikov
10d199fa80 Add code for save/restore of callee-saved registers 
llvm-svn: 70739
 2009-05-03 13:11:04 +00:00
Anton Korobeynikov
6a63537ff0 Two more hooks for RA and FP registers 
llvm-svn: 70738
 2009-05-03 13:10:40 +00:00
Anton Korobeynikov
06d645c199 Proper handle loading of effective address of stack slot stuff 
llvm-svn: 70737
 2009-05-03 13:10:26 +00:00
Anton Korobeynikov
88cc152a78 Match frame indexes 
llvm-svn: 70736
 2009-05-03 13:10:11 +00:00
Anton Korobeynikov
e7639579a3 First draft of stack slot loads / stores lowering 
llvm-svn: 70735
 2009-05-03 13:09:57 +00:00