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14514 Commits

Author SHA1 Message Date
Jakob Stoklund Olesen 9760f04ef9 Add an isSSA() flag to MachineRegisterInfo. 
This flag is true from isel to register allocation when the machine
function is required to be in SSA form.  The TwoAddressInstructionPass
and PHIElimination passes clear the flag.

The SSA flag wil be used by the machine code verifier to check for SSA
form, and eventually an assertion can enforce it in +Asserts builds.
This will catch the common target error of creating machine code with
multiple defs of a virtual register.

llvm-svn: 136532
 2011-07-29 22:51:22 +00:00
Jakub Staszak efd94c8fea Add more constantness in BranchProbabilityInfo. 
llvm-svn: 136502
 2011-07-29 19:30:00 +00:00
David Greene ea844f0bc9 Add a std::string Wrapper for TableGen 
Create a std::string wrapper for use as a DenseMap key.  DenseMap is
not safe in generate with strings, so this wrapper indicates that only
strings guaranteed not to have certain values should be used in the
DenseMap.

llvm-svn: 136481
 2011-07-29 19:06:58 +00:00
Eli Friedman adec587d5c Misc optimizer+codegen work for 'cmpxchg' and 'atomicrmw'. They appear to be 
working on x86 (at least for trivial testcases); other architectures will
need more work so that they actually emit the appropriate instructions for
orderings stricter than 'monotonic'. (As far as I can tell, the ARM, PPC,
Mips, and Alpha backends need such changes.)

llvm-svn: 136457
 2011-07-29 03:05:32 +00:00
Bill Wendling 7fa7fe6b58 Add the AddLandingPadInfo function. 
AddLandingPadInfo takes a landingpad instruction and grabs all of the
information from it that it needs for EH table generation.

llvm-svn: 136429
 2011-07-28 23:42:57 +00:00
Eli Friedman c9a551ebed LangRef and basic memory-representation/reading/writing for 'cmpxchg' and 
'atomicrmw' instructions, which allow representing all the current atomic
rmw intrinsics.

The allowed operands for these instructions are heavily restricted at the
moment; we can probably loosen it a bit, but supporting general
first-class types (where it makes sense) might get a bit complicated,
given how SelectionDAG works.

As an initial cut, these operations do not support specifying an alignment,
but it would be possible to add if we think it's useful. Specifying an
alignment lower than the natural alignment would be essentially
impossible to support on anything other than x86, but specifying a greater
alignment would be possible.  I can't think of any useful optimizations which
would use that information, but maybe someone else has ideas.

Optimizer/codegen support coming soon.

llvm-svn: 136404
 2011-07-28 21:48:00 +00:00
Jakub Staszak 07f0f02bc5 If run with -debug give more information about Cyclic Probability. 
llvm-svn: 136403
 2011-07-28 21:46:58 +00:00
Bill Wendling f8d95bc4c6 Use ArrayRef instead of requiring an std::vector. 
llvm-svn: 136396
 2011-07-28 21:25:33 +00:00
Bill Wendling 4f027233d2 The personality function should be a Function* and not just a Value*. 
llvm-svn: 136392
 2011-07-28 21:14:13 +00:00
Jakub Staszak 14852b182e Fix stupid mistake from commit 136381. 
llvm-svn: 136384
 2011-07-28 20:17:18 +00:00
Jakub Staszak d7ac43eed1 Speed up BlockFrequencyInfo a little bit. 
llvm-svn: 136381
 2011-07-28 20:09:31 +00:00
Duncan Sands 5710211af0 This file was moved from Support to ADT. Correct a comment. 
llvm-svn: 136344
 2011-07-28 08:36:22 +00:00
Nick Lewycky 3255d1d25f In DenseMapInfo<pair<T, U>> tombstone key, use the tombstone for T and U instead 
of the empty key for U. This shouldn't really matter because the tombstone key
for the pair was still distinct from every other key, but it is odd. Patch by
Michael Ilseman!

llvm-svn: 136336
 2011-07-28 06:48:33 +00:00
Bill Wendling 4c93488999 Make sure that the landingpad instruction takes a Constant* as the clause's value. 
llvm-svn: 136326
 2011-07-28 02:27:12 +00:00
Bill Wendling a8f04e3034 Add a couple of convenience functions: 
* InvokeInst: Get the landingpad instruction associated with this invoke.
* LandingPadInst: A method to reserve extra space for clauses.

llvm-svn: 136325
 2011-07-28 02:15:52 +00:00
Argyrios Kyrtzidis 348937de07 Add an optional 'bool makeAbsolute' in llvm::sys::fs::unique_file function. 
If true and 'model' parameter is not an absolute path, a temp directory will be prepended.
Make it true by default to match current behaviour.

llvm-svn: 136310
 2011-07-28 00:29:20 +00:00
Eli Friedman 26a484852e Code generation for 'fence' instruction. 
llvm-svn: 136283
 2011-07-27 22:21:52 +00:00
Jakub Staszak da3df4302a Use BlockFrequency instead of uint32_t in BlockFrequencyInfo. 
llvm-svn: 136278
 2011-07-27 22:05:51 +00:00
Bill Wendling 2641d132d1 Keep enums stable. Append EH stuff to the end. 
llvm-svn: 136263
 2011-07-27 21:00:28 +00:00
Bill Wendling 6c923bb8d9 Merge the contents from exception-handling-rewrite to the mainline. 
This adds the new instructions 'landingpad' and 'resume'.

llvm-svn: 136253
 2011-07-27 20:18:04 +00:00
Eli Friedman 4fc946cc71 The numbering of LLVMOpcode is supposed to be stable; revert my earlier change, and append Fence onto the end. 
llvm-svn: 136245
 2011-07-27 18:59:19 +00:00
Ted Kremenek 666bec46a0 Add a generic 'capacity_in_bytes' function to allow inspection of memory usage of various data structures. 
llvm-svn: 136233
 2011-07-27 18:40:45 +00:00
Jakub Staszak a9e8aa0482 Move static methods to the anonymous namespace. 
llvm-svn: 136221
 2011-07-27 15:51:51 +00:00
Jakub Staszak 107339e31a Edge to itself is backedge as well. 
llvm-svn: 136219
 2011-07-27 15:42:09 +00:00
Eli Friedman 89b694b096 Misc mid-level changes for new 'fence' instruction. 
llvm-svn: 136205
 2011-07-27 01:08:30 +00:00
Eli Friedman ae8161e774 Fix AliasSetTracker so that it doesn't make any assumptions about instructions it doesn't know about (like the atomic instructions I'm adding). 
llvm-svn: 136198
 2011-07-27 00:46:46 +00:00
Evan Cheng 481ebb0133 Support .code32 and .code64 in X86 assembler. 
llvm-svn: 136197
 2011-07-27 00:38:12 +00:00
Eli Friedman 4e8e257d58 Fix a couple minor mistakes pointed out by Bill in adding 'fence' instruction. 
llvm-svn: 136124
 2011-07-26 20:24:06 +00:00
Andrew Trick 3ca3f98c2c SCEV: Added a data structure for storing not-taken info per loop 
exit. Added an interfaces for querying either the loop's exact/max
backedge taken count or a specific loop exit's not-taken count.

llvm-svn: 136100
 2011-07-26 17:19:55 +00:00
Duncan Sands 6d473aa378 Strip trailing whitespace. 
llvm-svn: 136099
 2011-07-26 17:19:30 +00:00
Duncan Sands fe44f67d43 Teach the Triple class about kfreebsd (FreeBSD kernel with 
a GNU userspace).

llvm-svn: 136085
 2011-07-26 15:30:04 +00:00
Rafael Espindola b84dc6bca8 Add LLVMAddAlwaysInlinerPass to the C API. 
llvm-svn: 136083
 2011-07-26 15:23:23 +00:00
Rafael Espindola be2fe29f9c LLVM 3.0 is here, remove old do nothing method. 
llvm-svn: 136082
 2011-07-26 15:17:32 +00:00
Jay Foad 6a51402a8a Fix typo in comment. 
llvm-svn: 136068
 2011-07-26 09:36:52 +00:00
Evan Cheng 3a79225b4c Rename createCodeEmitter to createMCCodeEmitter; createObjectStreamer to createMCObjectStreamer. 
llvm-svn: 136031
 2011-07-26 00:42:34 +00:00
Evan Cheng 1142444565 Rename TargetAsmParser to MCTargetAsmParser and TargetAsmLexer to MCTargetAsmLexer; rename createAsmLexer to createMCAsmLexer and createAsmParser to createMCAsmParser. 
llvm-svn: 136027
 2011-07-26 00:24:13 +00:00
Evan Cheng 5928e69d20 Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to createMCAsmBackend. 
llvm-svn: 136010
 2011-07-25 23:24:55 +00:00
Eli Friedman fee02c6c13 Initial implementation of 'fence' instruction, the new C++0x-style replacement for llvm.memory.barrier. 
This is just a LangRef entry and reading/writing/memory representation; optimizer+codegen support coming soon.

llvm-svn: 136009
 2011-07-25 23:16:38 +00:00
Evan Cheng 1740a97734 Fix include guards. 
llvm-svn: 135998
 2011-07-25 22:52:04 +00:00
Jakub Staszak e92d047b51 BranchProbability::print returns void now. 
llvm-svn: 135994
 2011-07-25 22:27:42 +00:00
Jakub Staszak 49993f26bf Add BlockFrequency class. 
llvm-svn: 135992
 2011-07-25 22:24:51 +00:00
Rafael Espindola e96fd5a4fe Add LLVMAddTargetLibraryInfo to the C API. 
llvm-svn: 135975
 2011-07-25 21:20:54 +00:00
Rafael Espindola 7281395c8c Add LLVMAddLowerExpectIntrinsicPass to the C API. 
llvm-svn: 135966
 2011-07-25 20:57:59 +00:00
Evan Cheng f60768a14e Fix last bits of MC layer issues. llvm-mc doesn't need to initialize TargetMachine's anymore. 
llvm-svn: 135963
 2011-07-25 20:53:02 +00:00
Jakub Staszak 12bc09c843 Fix class description. 
llvm-svn: 135948
 2011-07-25 20:08:58 +00:00
Jakub Staszak 4e48f3df16 Fix #include guard directive. 
llvm-svn: 135947
 2011-07-25 20:08:00 +00:00
Jakub Staszak 875ebd5f5d Rename BlockFrequency to BlockFrequencyInfo and MachineBlockFrequency to 
MachineBlockFrequencyInfo.

llvm-svn: 135937
 2011-07-25 19:25:40 +00:00
Jay Foad a9f7959897 Remove uses of std::vector from TypeBuilder. 
llvm-svn: 135906
 2011-07-25 10:32:27 +00:00
Jay Foad 89d9b81a3a Use ArrayRef in the (protected) constructors of ConstantArray, ConstantStruct and ConstantVector. 
llvm-svn: 135905
 2011-07-25 10:14:44 +00:00
Jay Foad d1b7849d49 Convert GetElementPtrInst to use ArrayRef. 
llvm-svn: 135904
 2011-07-25 09:48:08 +00:00