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37587 Commits

Author SHA1 Message Date
Chris Lattner
ee8d960ed1 no need to keep around this output. 
llvm-svn: 48285
 2008-03-12 17:14:06 +00:00
Evan Cheng
136a24742c Document an implementation detail about EXTRACT_SUBREG and INSERT_SUBREG sub-register operand. 
llvm-svn: 48283
 2008-03-12 07:52:15 +00:00
Owen Anderson
6ff0b822b4 Improve the return slot optimization to be both more aggressive (not limited to sret parameters), and 
safer (when the passed pointer might be invalid).  Thanks to Duncan and Chris for the idea behind this, 
and extra thanks to Duncan for helping me work out the trap-safety.

llvm-svn: 48280
 2008-03-12 07:37:44 +00:00
Evan Cheng
99ee78ef63 Clean up my own mess. 
X86 lowering normalize vector 0 to v4i32. However DAGCombine can fold (sub x, x) -> 0 after legalization. It can create a zero vector of a type that's not expected (e.g. v8i16). We don't want to disable the optimization since leaving a (sub x, x) is really bad. Add isel patterns for other types of vector 0 to ensure correctness. It's highly unlikely to happen other than in bugpoint reduced test cases.

llvm-svn: 48279
 2008-03-12 07:02:50 +00:00
Owen Anderson
944b1c76ab We also need to collect the VN IDs for the PHI instructions for later updating. 
llvm-svn: 48278
 2008-03-12 04:22:57 +00:00
Owen Anderson
70aaab6dc5 When we're determining what registers to coallesce, track the VNInfo IDs for the definitions that 
feed the PHI instructions.  We'll need these IDs in order to update LiveIntervals properly.

llvm-svn: 48277
 2008-03-12 03:13:29 +00:00
Chris Lattner
e7b19035ed when the bitcode reader is referencing a paramattr, make sure to bump its refcount. 
llvm-svn: 48276
 2008-03-12 02:25:52 +00:00
Evan Cheng
0903aef2ff Total brain cramp. 
llvm-svn: 48274
 2008-03-12 02:05:05 +00:00
Chris Lattner
1f49988a7a This is a simple fix for getting error messages from dlerror in 
LoadLibraryPermanently. The current code modifies the value of a pointer
that is passed by value, so the caller never gets the message.

Patch by Julien Lerouge!

llvm-svn: 48270
 2008-03-12 00:50:01 +00:00
Dale Johannesen
0d98256c05 One more bit of Altivec parameter passing. 
llvm-svn: 48269
 2008-03-12 00:49:20 +00:00
Anton Korobeynikov
2f22e3f690 Be backward compatible 
llvm-svn: 48268
 2008-03-12 00:49:19 +00:00
Devang Patel
cc189b5606 Check multiple return values. 
llvm-svn: 48267
 2008-03-12 00:32:32 +00:00
Dan Gohman
35f8f07c00 Make this test x86-specific for now; targets that don't use 
the automated CallingConv code to handle return values typically
don't support multiple return values.

llvm-svn: 48265
 2008-03-12 00:25:14 +00:00
Dale Johannesen
b28456ef18 Implement Altivec passing to varargs functions on ppc. 
llvm-svn: 48264
 2008-03-12 00:22:17 +00:00
Evan Cheng
105cb3988b Set NextMII after issuing a physical register spill. 
llvm-svn: 48263
 2008-03-12 00:14:07 +00:00
Devang Patel
fa8667a2dd Fix attribute handling. 
llvm-svn: 48262
 2008-03-12 00:07:03 +00:00
Evan Cheng
b398635456 Minor debug output bug. 
llvm-svn: 48261
 2008-03-12 00:02:46 +00:00
Dan Gohman
8a361c1f92 Basic feature test for multiple return values in codegen. 
llvm-svn: 48260
 2008-03-11 23:53:16 +00:00
Anton Korobeynikov
e6d90f5a95 Ultimately resolve aliases during linking, if possible 
llvm-svn: 48259
 2008-03-11 22:51:09 +00:00
Anton Korobeynikov
80b53b8f6b Testcase for PR2137 
llvm-svn: 48258
 2008-03-11 22:43:42 +00:00
Anton Korobeynikov
e8fa50f63a Correctly propagate thread-local flag from aliasee to alias. This fixes PR2137 
llvm-svn: 48257
 2008-03-11 22:38:53 +00:00
Dan Gohman
24570836b2 Use PassManagerBase instead of FunctionPassManager for functions 
that merely add passes. This allows them to be used with either
FunctionPassManager or PassManager, or even with a custom new
kind of pass manager.

llvm-svn: 48256
 2008-03-11 22:29:46 +00:00
Anton Korobeynikov
da7db7d9a1 Add helper for ultimate aliasee resoltion 
llvm-svn: 48255
 2008-03-11 22:28:56 +00:00
Devang Patel
7358165c99 Handle multiple ret values. 
llvm-svn: 48254
 2008-03-11 22:24:29 +00:00
Devang Patel
f6269f0914 Initialize. 
llvm-svn: 48253
 2008-03-11 22:08:21 +00:00
Dan Gohman
20af5a0fe7 Check to see if a two-entry PHI block can be simplified 
before trying to merge the block into its predecessors.
This allows two-entry-phi-return.ll to be simplified
into a single basic block.

llvm-svn: 48252
 2008-03-11 21:53:06 +00:00
Dan Gohman
8e9ae96a4a Make this test more challenging to help it avoid being 
optimized away before it tests what it is intended to test.

llvm-svn: 48251
 2008-03-11 21:47:57 +00:00
Anton Korobeynikov
6f51973734 Update testcase for recent aliases change 
llvm-svn: 48250
 2008-03-11 21:42:20 +00:00
Anton Korobeynikov
2601d7ee50 Honour aliases visibility during asm emission 
llvm-svn: 48249
 2008-03-11 21:41:14 +00:00
Anton Korobeynikov
db691cbd6d Honour aliases visibility when reading from/writing to bitcode 
llvm-svn: 48248
 2008-03-11 21:40:17 +00:00
Dan Gohman
6616836e71 Add a test to ensure that all-ones vectors are materialized with pcmpeqd. 
llvm-svn: 48247
 2008-03-11 21:37:00 +00:00
Evan Cheng
a3891365b5 Transfer physical register spill info when load / store folding happens. 
llvm-svn: 48246
 2008-03-11 21:34:46 +00:00
Dan Gohman
44b4c07cd1 Use the correct value for InSignBit. 
llvm-svn: 48245
 2008-03-11 21:29:43 +00:00
Dan Gohman
1351025a91 Initial codegen support for functions and calls with multiple return values. 
llvm-svn: 48244
 2008-03-11 21:11:25 +00:00
Chris Lattner
8abed80a69 Implement basic support for the 'f' register class constraint. This basically 
works, but probably won't if you mix it with 't' or 'u' yet.

llvm-svn: 48243
 2008-03-11 19:50:13 +00:00
Chris Lattner
7b27ccfd5e coalesce away 80-bit floating point copies. 
llvm-svn: 48241
 2008-03-11 19:30:09 +00:00
Chris Lattner
7930d8e775 convert a massive if statement to a switch. 
llvm-svn: 48240
 2008-03-11 19:28:17 +00:00
Chris Lattner
120ad01fcb start handling the 'f' x87 constraint. 
llvm-svn: 48239
 2008-03-11 19:06:29 +00:00
Devang Patel
70c238a1d8 Skip functions that return multiple values. 
llvm-svn: 48233
 2008-03-11 18:04:06 +00:00
Dale Johannesen
1b12647544 The feature this is testing did not work in the general case, 
and has been removed.

llvm-svn: 48232
 2008-03-11 17:48:26 +00:00
Devang Patel
5aafa6ee1f Fix getOperand() for ReturnInst. 
llvm-svn: 48229
 2008-03-11 17:35:03 +00:00
Devang Patel
5663fe6613 Become multiple return value aware. 
Right now, the pass does not optimize tail recursions 
involving multiple return values.

llvm-svn: 48228
 2008-03-11 17:33:32 +00:00
Devang Patel
e418de3023 Add TODO reminder. 
llvm-svn: 48227
 2008-03-11 17:32:05 +00:00
Dan Gohman
d3a20c9e1e Give PassManager and FunctionPassManager a common base class, with 
add(Pass *) as a pure virtual member function. This will allow all
the various addPassesTo* functions in LLVM to avoid hard-coding what
type of PassManager is used. 

llvm-svn: 48226
 2008-03-11 16:41:42 +00:00
Dan Gohman
dfdf2c0633 Fix typos in comments. 
llvm-svn: 48225
 2008-03-11 16:18:48 +00:00
Christopher Lamb
342e4104d3 Missed part of recommit. 
llvm-svn: 48224
 2008-03-11 10:27:36 +00:00
Christopher Lamb
aa7c2105de Recommitting parts of r48130. These do not appear to cause the observed failures. 
llvm-svn: 48223
 2008-03-11 10:09:17 +00:00
Christopher Lamb
a731239c30 Recommitting changes after more testing. These appear to cause no problems. 
llvm-svn: 48222
 2008-03-11 09:33:47 +00:00
Evan Cheng
d54660aeed Use TargetRegisterInfo::getPhysicalRegisterRegClass. Remove duplicated code. 
llvm-svn: 48221
 2008-03-11 07:55:13 +00:00
Evan Cheng
d85667b89c If there are multiple register classes that a register belongs to, return the super-class (e.g. on x86, returns GR32, not GR32_). 
llvm-svn: 48220
 2008-03-11 07:54:14 +00:00