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14069 Commits

Author SHA1 Message Date
Andrew Trick
4b22856b91 whitespace 
llvm-svn: 136840
 2011-08-03 23:43:49 +00:00
Andrew Trick
b20e31e81f An interface for iterating over a loop's blocks in DFS order. 
llvm-svn: 136838
 2011-08-03 23:27:28 +00:00
Bill Wendling
fdea9930ac Remove the LowerSetJmp pass. It wasn't used effectively by any of the targets. 
This is some of my original LLVM code. *wipes tear*

llvm-svn: 136821
 2011-08-03 22:18:20 +00:00
Owen Anderson
2331040816 Add accessors for manipulating an MCInst's operands. 
llvm-svn: 136818
 2011-08-03 21:52:15 +00:00
Jakub Staszak
7b30ba0db8 Add more constantness in BlockFrequencyInfo. 
llvm-svn: 136816
 2011-08-03 21:30:57 +00:00
Eli Friedman
afd08dcc2c New approach to r136737: insert the necessary fences for atomic ops in platform-independent code, since a bunch of platforms (ARM, Mips, PPC, Alpha are the relevant targets here) need to do essentially the same thing. 
I think this completes the basic CodeGen for atomicrmw and cmpxchg.

llvm-svn: 136813
 2011-08-03 21:06:02 +00:00
Bill Wendling
9db96fc81f Remove CreateUnwind from the IRBuillder. 
llvm-svn: 136811
 2011-08-03 20:53:38 +00:00
Andrew Trick
bbb5c7b0aa SCEV: Use AssertingVH to catch dangling BasicBlock* when passes forget 
to notify SCEV of a change. Add forgetLoop in a couple of those places.

llvm-svn: 136797
 2011-08-03 18:32:11 +00:00
Jay Foad
095dcdbd48 Use cast<> instead of a C-style cast to get some free assertions. 
llvm-svn: 136771
 2011-08-03 10:05:04 +00:00
Rafael Espindola
2b0d064f3b Move methods in PassManagerBuilder offline. 
llvm-svn: 136727
 2011-08-02 21:50:27 +00:00
Rafael Espindola
73efcf56f6 move PassManagerBuilder.h to IPO. This is a non intuitive place to put it, 
but it solves a layering violation since things in Support are not supposed to
use things in Transforms.

llvm-svn: 136726
 2011-08-02 21:50:24 +00:00
Rafael Espindola
cefc38659a Assume .cfi_startproc is the first thing in a function. If the function is 
externally visable, create a local symbol to use in the CFE. If not, use the
function label itself.

Fixes PR10420.

llvm-svn: 136716
 2011-08-02 20:24:22 +00:00
Roman Divacky
7453a0dcd6 Sketch out PowerPC ELF writer. This is enough to get clang -integrated-as 
to compile a working hello world on FreeBSD/PPC32.

llvm-svn: 136689
 2011-08-02 15:51:38 +00:00
Andrew Trick
86f6a3c645 Use consistent terminology for loop exit/exiting blocks. Name change only. 
llvm-svn: 136677
 2011-08-02 04:23:35 +00:00
Eli Friedman
564f52b2bf Fix a couple silly typos in IRBuilder in the new atomic instructions. 
llvm-svn: 136665
 2011-08-02 00:45:35 +00:00
Owen Anderson
4ee266955a Add a clear() operation to MCInst, to drop all of its operands. Useful for the disassembler, where we may realize fairly late into decoding that something is wrong and need to reset. 
llvm-svn: 136634
 2011-08-01 18:43:18 +00:00
Jakub Staszak
db23d8b195 Add BlockFrequency::getEntryFrequency() 
llvm-svn: 136618
 2011-08-01 15:22:10 +00:00
Jay Foad
f5b5b93126 The operands of a GlobalAlias are always Constants. Simplify things 
accordingly.

llvm-svn: 136608
 2011-08-01 12:20:36 +00:00
Bill Wendling
8a625cebd2 Add the 'resume' instruction for the new EH rewrite. 
This adds the 'resume' instruction class, IR parsing, and bitcode reading and
writing. The 'resume' instruction resumes propagation of an existing (in-flight)
exception whose unwinding was interrupted with a 'landingpad' instruction (to be
added later).

llvm-svn: 136589
 2011-07-31 06:30:59 +00:00
Bill Wendling
57ddbb84ac Revert r136253, r136263, r136269, r136313, r136325, r136326, r136329, r136338, 
r136339, r136341, r136369, r136387, r136392, r136396, r136429, r136430, r136444,
r136445, r136446, r136253 pending review.

llvm-svn: 136556
 2011-07-30 05:42:50 +00:00
Jakob Stoklund Olesen
7b77f35a1b 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
02fa079dc3 Add more constantness in BranchProbabilityInfo. 
llvm-svn: 136502
 2011-07-29 19:30:00 +00:00
David Greene
5927323d9c 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
6f2419f1a2 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
e4090cc864 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
f6797ffc9a 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
6076fe7cff If run with -debug give more information about Cyclic Probability. 
llvm-svn: 136403
 2011-07-28 21:46:58 +00:00
Bill Wendling
dba29efd6f Use ArrayRef instead of requiring an std::vector. 
llvm-svn: 136396
 2011-07-28 21:25:33 +00:00
Bill Wendling
22f729dcfb 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
22fcf6c40b Fix stupid mistake from commit 136381. 
llvm-svn: 136384
 2011-07-28 20:17:18 +00:00
Jakub Staszak
534e099ba0 Speed up BlockFrequencyInfo a little bit. 
llvm-svn: 136381
 2011-07-28 20:09:31 +00:00
Duncan Sands
beab1f4882 This file was moved from Support to ADT. Correct a comment. 
llvm-svn: 136344
 2011-07-28 08:36:22 +00:00
Nick Lewycky
31d1c92d69 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
b75e5fc784 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
03445c79b9 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
a95f22ea2b 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
842ea169de Code generation for 'fence' instruction. 
llvm-svn: 136283
 2011-07-27 22:21:52 +00:00
Jakub Staszak
f5076015fc Use BlockFrequency instead of uint32_t in BlockFrequencyInfo. 
llvm-svn: 136278
 2011-07-27 22:05:51 +00:00
Bill Wendling
b20cfdfe95 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
Ted Kremenek
ee0970dabc 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
29ef880b52 Move static methods to the anonymous namespace. 
llvm-svn: 136221
 2011-07-27 15:51:51 +00:00
Jakub Staszak
d5378ec61f Edge to itself is backedge as well. 
llvm-svn: 136219
 2011-07-27 15:42:09 +00:00
Eli Friedman
f226974353 Misc mid-level changes for new 'fence' instruction. 
llvm-svn: 136205
 2011-07-27 01:08:30 +00:00
Eli Friedman
2da127e60a 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
bff9934d9a Support .code32 and .code64 in X86 assembler. 
llvm-svn: 136197
 2011-07-27 00:38:12 +00:00
Eli Friedman
22e4c4d12d 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
ae93f1bf46 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
8b264d3264 Strip trailing whitespace. 
llvm-svn: 136099
 2011-07-26 17:19:30 +00:00
Duncan Sands
0a14a12b51 Teach the Triple class about kfreebsd (FreeBSD kernel with 
a GNU userspace).

llvm-svn: 136085
 2011-07-26 15:30:04 +00:00
Jay Foad
fe750c827a Fix typo in comment. 
llvm-svn: 136068
 2011-07-26 09:36:52 +00:00