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34374 Commits

Author SHA1 Message Date
Bill Wendling
e2df6b28f4 Initialize uninitialized variables. 
llvm-svn: 91475
 2009-12-16 00:00:18 +00:00
Jeffrey Yasskin
d50951dc1e Change indirect-globals to use a dedicated allocIndirectGV. This lets us 
remove start/finishGVStub and the BufferState helper class from the
MachineCodeEmitter interface.  It has the side-effect of not setting the
indirect global writable and then executable on ARM, but that shouldn't be
necessary.

llvm-svn: 91464
 2009-12-15 22:42:46 +00:00
Bob Wilson
8505aa648d Reapply 91184 with fixes and an addition to the testcase to cover the problem 
found last time.  Instead of trying to modify the IR while iterating over it,
I've change it to keep a list of WeakVH references to dead instructions, and
then delete those instructions later.  I also added some special case code to
detect and handle the situation when both operands of a memcpy intrinsic are
referencing the same alloca.

llvm-svn: 91459
 2009-12-15 22:00:51 +00:00
Chris Lattner
ea6ba0d59b Fix GetConstantStringInfo to not look into MDString (it works on 
real data, not metadata) and fix DbgInfoPrinter to not abuse
GetConstantStringInfo.

llvm-svn: 91444
 2009-12-15 19:34:20 +00:00
Devang Patel
ffb33d1df8 Add support to emit debug info for C++ namespaces. 
llvm-svn: 91440
 2009-12-15 19:16:48 +00:00
Chris Lattner
fa960751b1 optimize strstr, PR5783 
llvm-svn: 91438
 2009-12-15 19:14:40 +00:00
Johnny Chen
8ef481b5d7 Added encoding bits for the Thumb ISA. Initial checkin. 
llvm-svn: 91434
 2009-12-15 17:24:14 +00:00
Dan Gohman
a1003e40f7 Delete an unused function. 
llvm-svn: 91432
 2009-12-15 16:30:09 +00:00
Chris Lattner
284fe3f14c add some other xforms that should be done as part of PR5783 
llvm-svn: 91428
 2009-12-15 09:05:13 +00:00
Chris Lattner
587962c667 Remove isPod() from DenseMapInfo, splitting it out to its own 
isPodLike type trait.  This is a generally useful type trait for
more than just DenseMap, and we really care about whether something
acts like a pod, not whether it really is a pod.

llvm-svn: 91421
 2009-12-15 07:26:43 +00:00
Evan Cheng
32946d6aae Fix an encoding bug. 
llvm-svn: 91417
 2009-12-15 06:49:02 +00:00
Kenneth Uildriks
c0ab5a6e88 For fastcc on x86, let ECX be used as a return register after EAX and EDX 
llvm-svn: 91410
 2009-12-15 03:27:52 +00:00
Evan Cheng
4adb4acc7b Disable 91381 for now. It's miscompiling ARMISelDAG2DAG.cpp. 
llvm-svn: 91405
 2009-12-15 03:07:11 +00:00
Evan Cheng
c531da60aa Make 91378 more conservative. 
1. Only perform (zext (shl (zext x), y)) -> (shl (zext x), y) when y is a constant. This makes sure it remove at least one zest.
2. If the shift is a left shift, make sure the original shift cannot shift out bits.

llvm-svn: 91399
 2009-12-15 03:00:32 +00:00
John McCall
6bf01a2caf You can't use typedefs to declare template member specializations, and 
clang enforces it.

llvm-svn: 91397
 2009-12-15 02:35:24 +00:00
Bill Wendling
e972f48c8f Initial work on disabling the scheduler. This is a work in progress, and this 
stuff isn't used just yet.

We want to model the GCC `-fno-schedule-insns' and `-fno-schedule-insns2'
flags. The hypothesis is that the people who use these flags know what they are
doing, and have hand-optimized the C code to reduce latencies and other
conflicts.

The idea behind our scheme to turn off scheduling is to create a map "on the
side" during DAG generation. It will order the nodes by how they appeared in the
code. This map is then used during scheduling to get the ordering.

llvm-svn: 91392
 2009-12-15 01:54:51 +00:00
Evan Cheng
d6a991f735 Tail duplication should zap a copy it inserted for SSA update if the copy is the only use of its source. 
llvm-svn: 91390
 2009-12-15 01:44:10 +00:00
Evan Cheng
cd8f0de016 Use sbb x, x to materialize carry bit in a GPR. The result is all one's or all zero's. 
llvm-svn: 91381
 2009-12-15 00:53:42 +00:00
Evan Cheng
bd48ad16fa Fold (zext (and x, cst)) -> (and (zext x), cst). 
llvm-svn: 91380
 2009-12-15 00:52:11 +00:00
Evan Cheng
f3b2e55b34 Propagate zest through logical shift. 
llvm-svn: 91378
 2009-12-15 00:41:36 +00:00
Eric Christopher
3abcd3f41c Formatting. 
llvm-svn: 91377
 2009-12-15 00:40:55 +00:00
Bill Wendling
d2e25c606e Revert these. They may have been causing 483_xalancbmk to fail: 
$ svn merge -c -91161 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91161 into '.':
U    lib/CodeGen/BranchFolding.cpp
U    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91113 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91113 into '.':
G    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91101 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91101 into '.':
U    include/llvm/CodeGen/MachineBasicBlock.h
G    lib/CodeGen/MachineBasicBlock.cpp
$ svn merge -c -91092 https://llvm.org/svn/llvm-project/llvm/trunk
--- Reverse-merging r91092 into '.':
G    include/llvm/CodeGen/MachineBasicBlock.h
G    lib/CodeGen/MachineBasicBlock.cpp

llvm-svn: 91376
 2009-12-15 00:39:24 +00:00
Jim Grosbach
76d722dd6c nand atomic requires opposite operand ordering 
llvm-svn: 91371
 2009-12-15 00:12:35 +00:00
Dan Gohman
57dc006590 Fix integer cast code to handle vector types. 
llvm-svn: 91362
 2009-12-14 23:40:38 +00:00
Dan Gohman
e4169d615e Fix this to properly clear the FastISel debug location. Thanks to 
Bill for spotting this!

llvm-svn: 91355
 2009-12-14 23:08:09 +00:00
Johnny Chen
61b6d221d2 Add encoding bits "let Inst{11-4} = 0b00000000;" to BR_JTr to disambiguate 
between BR_JTr and STREXD.

llvm-svn: 91339
 2009-12-14 21:51:34 +00:00
Bill Wendling
66fc3eb99d The CIE says that the LSDA point in the FDE section is an "sdata4". That's fine, 
but we need it to actually be 4-bytes in the FDE.

llvm-svn: 91337
 2009-12-14 21:49:44 +00:00
Jim Grosbach
dc0006c895 v6 sync insn copy/paste error 
llvm-svn: 91333
 2009-12-14 21:33:32 +00:00
Jim Grosbach
09167e5bbb Add ARMv6 memory and sync barrier instructions 
llvm-svn: 91329
 2009-12-14 21:24:16 +00:00
Johnny Chen
80b7b55eea Fixed encoding bits typo of ldrexd/strexd. 
llvm-svn: 91327
 2009-12-14 21:01:46 +00:00
Jim Grosbach
266c2d59e6 Thumb2 atomic operations 
llvm-svn: 91321
 2009-12-14 20:14:59 +00:00
Dan Gohman
d16b19ff3e Move several function bodies which are rarely inlined out of line. 
llvm-svn: 91319
 2009-12-14 19:43:09 +00:00
Chris Lattner
81c6d73285 fix an obvious bug found by clang++ and collapse a redundant if. 
Here's the diagnostic from clang:

/Volumes/Data/dgregor/Projects/llvm/lib/Target/CppBackend/CPPBackend.cpp:989:23: warning: 'gv' is always NULL in this context
        printConstant(gv);
                      ^
1 diagnostic generated.

llvm-svn: 91318
 2009-12-14 19:34:32 +00:00
Dan Gohman
8e0956f734 Micro-optimize these functions in the case where they are not inlined. 
llvm-svn: 91316
 2009-12-14 19:32:31 +00:00
Jim Grosbach
c7285dc721 correct selection requirements for thumb2 vs. arm versions of the barrier intrinsics 
llvm-svn: 91313
 2009-12-14 19:24:11 +00:00
Jim Grosbach
723a7aa4e9 add Thumb2 atomic and memory barrier instruction definitions 
llvm-svn: 91310
 2009-12-14 18:56:47 +00:00
Jim Grosbach
99ace7c9ff whitespace 
llvm-svn: 91307
 2009-12-14 18:36:32 +00:00
Jim Grosbach
aaf39891f4 ARM memory barrier instructions are not predicable 
llvm-svn: 91305
 2009-12-14 18:31:20 +00:00
Dan Gohman
106fce040d Clear the Processed set when it is no longer used, and clear the 
IVUses list in releaseMemory().

llvm-svn: 91296
 2009-12-14 17:35:17 +00:00
Dan Gohman
abb2ea84d9 Fix a thinko; isNotAlreadyContainedIn had a built-in negative, so the 
condition was inverted when the code was converted to contains().

llvm-svn: 91295
 2009-12-14 17:31:01 +00:00
Dan Gohman
ea5d4d2354 Remove unnecessary #includes. 
llvm-svn: 91293
 2009-12-14 17:19:06 +00:00
Dan Gohman
5066c25e62 Instead of having a ScalarEvolution pointer member in BasedUser, just pass 
the ScalarEvolution pointer into the functions which need it.

llvm-svn: 91289
 2009-12-14 17:12:51 +00:00
Dan Gohman
b001599b67 Don't bother cleaning up if there's nothing to clean up. 
llvm-svn: 91288
 2009-12-14 17:10:44 +00:00
Dan Gohman
178e26adbf Delete an unused variable. 
llvm-svn: 91287
 2009-12-14 17:08:09 +00:00
Dan Gohman
c6a7652b5e Drop Loop::isNotAlreadyContainedIn in favor of Loop::contains. The 
former was just exposing a LoopInfoBase implementation detail.

llvm-svn: 91286
 2009-12-14 17:06:50 +00:00
Jim Grosbach
5741d33c74 add ldrexd/strexd instructions 
llvm-svn: 91284
 2009-12-14 17:02:55 +00:00
Dan Gohman
44a2a502f2 LSR itself doesn't need LoopInfo. 
llvm-svn: 91283
 2009-12-14 17:02:34 +00:00
Dan Gohman
449298eb08 LSR itself doesn't need DominatorTree. 
llvm-svn: 91282
 2009-12-14 16:57:08 +00:00
Dan Gohman
bf3406f85f Remove the code in LSR that manually hoists expansions out of loops; 
SCEVExpander does this automatically.

llvm-svn: 91281
 2009-12-14 16:52:55 +00:00
Dan Gohman
0a0423c492 Minor code cleanups. 
llvm-svn: 91280
 2009-12-14 16:37:29 +00:00