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Author SHA1 Message Date
Chris Lattner
6c3bfba06e Fix the regressions on sext-misc.ll my patch yesterday caused. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52466 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 18:11:55 +00:00
Owen Anderson
bb3761c9e5 Revert r52459, which was causing an infinite loop or massive slowdown on MultiSource/Applications/SPASS, and possibly others as well. 
Please reapply once this is fixed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52465 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 17:32:16 +00:00
Dan Gohman
e24fa64d52 Move SCEVExpander::visitAddExpr out-of-line. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52464 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 16:37:11 +00:00
Dan Gohman
cfeb6a4506 Move LSR's private isZero function to a public SCEV member 
function, and make use of it in several places.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52463 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 16:23:07 +00:00
Gabor Greif
a9c0f2b03f fix validator warning 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52461 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 14:05:31 +00:00
Gabor Greif
dfed118f22 prettify, no semantic changes 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52460 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 13:44:57 +00:00
Matthijs Kooijman
ca85d65277 Rewrite the DeadArgumentElimination pass, to use a more explicit tracking of 
dependencies between return values and/or arguments. Also make the handling of
arguments and return values the same.

The pass now looks properly inside returned structs, but only at the first                                                                                     
level (ie, not inside nested structs).

Also add a testcase for testing various variations of (multiple) dead rerturn
values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52459 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 11:12:53 +00:00
Matthijs Kooijman
c2afe89019 Reapply r52397 (make IPConstProp promote returned arguments), but fixed this 
time. Sorry for the trouble!

This time, also add a testcase, which I should have done in the first place...


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52455 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 08:30:37 +00:00
Evan Cheng
359e9371b9 XOR32rr, etc. are not AsCheapAsMove, but MOV32ri, etc. are. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52454 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 08:13:07 +00:00
Matthijs Kooijman
8b0fcf38ef Reapply r52396, it was unrelated to the breakage (that was caused by r52397, my 
commit after this).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52453 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 08:09:27 +00:00
Evan Cheng
7543e58a77 Complete support for two-address pass rematerialization. Now *almost* always a win. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52452 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 07:49:14 +00:00
Evan Cheng
ce049437d6 Add MachineRegisterInfo::use_empty. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52451 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 07:47:55 +00:00
Evan Cheng
625986afea Cosmetic. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52450 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 07:47:28 +00:00
Bill Wendling
604a818463 If compiling for PPC on an i386 box, the LTO wouldn't get the altivec (and 
other) feature information. The workaround is inelegant and could be cleaned up
if this information were available some other way (say, in the IR).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52447 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 06:35:30 +00:00
Chris Lattner
0521e3cdc1 implement some simple bswap optimizations, rdar://5992453 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52442 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 04:33:20 +00:00
Chris Lattner
a2eec61607 temporarily revert this testcase since its patch was reverted. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52441 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 04:03:23 +00:00
Chris Lattner
8114b718c9 make truncate/sext elimination capable of changing phi's. This 
implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52440 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 04:00:49 +00:00
Evan Cheng
fab8387384 Unbreak DECLARE isel in pic mode. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52439 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 02:48:27 +00:00
Devang Patel
64cd658223 Preserve dominance frontier while trivially unswitching loop. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52438 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 02:16:38 +00:00
Devang Patel
6d0cc55ef3 Check empty dominance frontier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52437 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-18 02:12:09 +00:00
Dan Gohman
44f6a2c951 Auto-upgrade code for multiple-value return statements. This code 
isn't actually called yet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52435 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 23:38:43 +00:00
Dan Gohman
80b9626ee3 In InsertValueInst's copy ctor, actually copy the operands. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52434 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 23:25:49 +00:00
Owen Anderson
2960ed4b85 We don't want to find dependencies within the same block in this case. It leads to incorrect results because 
we're detecting something at or after the call we're querying on.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52433 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 22:27:06 +00:00
Dan Gohman
b79bf1966d Implement the ExtractValueInst::getIndexedType that accepts one 
index value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52432 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 21:07:55 +00:00
Evan Cheng
f26e8557de Live-through live interval is [mbb start, mbb end+1]. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52431 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 20:13:36 +00:00
Evan Cheng
739583be56 When extending a liveinterval by commuting, don't throw away the live ranges that are not affected. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52430 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 20:11:16 +00:00
Ted Kremenek
8d6a58c5d5 Consistently set "Buckets[NumBuckets] = reinterpret_cast<void*>(-1)" throughout FoldingSet.cpp. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52425 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 19:12:43 +00:00
Owen Anderson
26bb50ab48 Add an insertBefore method for attaching previously unattached instructions, 
such as those created by clone(), to a basic block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52424 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 18:29:27 +00:00
Owen Anderson
2b7470eb54 Fix use of placement new to actually use an address. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52423 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 18:07:43 +00:00
Evan Cheng
95350b9cd2 It's not safe to remove SUBREG_TO_REG that looks like identity copies, e.g. movl %eax, %eax on x86-64 actually does a zero-extend. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52421 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 17:59:16 +00:00
Anton Korobeynikov
0b725f17e0 Add one more 'magic' define :) 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52420 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 17:57:43 +00:00
Anton Korobeynikov
7a17ff7b3f Unbreak non-PPC builds 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52419 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 17:38:31 +00:00
Anton Korobeynikov
210539ebc4 Provide generic hooks for icache invalidation. Add PPC implementation. 
Patch by Gary Benson!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52418 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 17:30:05 +00:00
Chris Lattner
fc329f4fa1 revert recent patch which is causing widespread breakage. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52415 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 17:06:43 +00:00
Evan Cheng
1b088f3310 Don't forget to initialize SymbolSearchingDisabled. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52414 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 16:49:02 +00:00
Duncan Sands
34b176a181 Fix typo that changed the logic to something wrong. 
Spotted by Nick Lewycky.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52411 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 15:55:30 +00:00
Duncan Sands
69b01e92a2 Split type expansion into ExpandInteger and ExpandFloat 
rather than bundling them together.  Rename FloatToInt
to PromoteFloat (better, if not perfect).  Reorganize
files by types rather than by operations.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52408 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 14:27:01 +00:00
Matthijs Kooijman
de9256ad2e Forgot to commit the ValueTracking header file along with r52396. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52401 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 13:54:33 +00:00
Matthijs Kooijman
2fbabf6e6d Learn IPConstProp to propagate arguments that are directly returned. Strictly 
speaking these are not constant values. However, when a function always returns
one of its arguments, then from the point of view of each caller the return
value is constant (or at least a known value) and can be replaced.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52397 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 12:20:24 +00:00
Matthijs Kooijman
906e423724 Learn IPConstProp to look at individual return values and propagate them 
individually.

Also learn IPConstProp how returning first class aggregates work, in addition
to old style multiple return instructions.

Modify the return-constants testscase to confirm this behaviour.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52396 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 12:02:52 +00:00
Matthijs Kooijman
74fc4d9686 80 column fixes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52391 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 08:26:32 +00:00
Matthijs Kooijman
3faf9df08f Use a SmallVector instead of an array, since auto_ptr doesn't handle arrays 
properly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52390 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 08:24:37 +00:00
Chris Lattner
ead0d88ad7 add a new -enable-value-prop flag for llcbeta, that enables propagation 
of value info (sign/zero ext info) from one MBB to another.  This doesn't
handle much right now because of two limitations:

1) only handles zext/sext, not random bit propagation (no assert exists 
   for this)
2) doesn't handle phis.




git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52383 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 06:09:18 +00:00
Duncan Sands
a47c6c3703 Fix spelling. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52381 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 03:24:13 +00:00
Evan Cheng
851bc04533 Rather than avoiding to wrap ISD::DECLARE GV operand in X86ISD::Wrapper, simply handle it at dagisel time with x86 specific isel code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52377 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-17 02:01:22 +00:00
Chris Lattner
fc196f9ee9 Add a missing ~ (dtor became ctor) which caused crashes on a bunch of stuff. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52374 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-16 23:06:51 +00:00
Evan Cheng
c3de802ad9 Do not issue identity copies. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52373 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-16 22:52:53 +00:00
Dan Gohman
9b93dd1f1a Refine the change in r52258 for avoiding use-before-def conditions 
when changing the stride of a comparison so that it's slightly
more precise, by having it scan the instruction list to determine
if there is a use of the condition after the point where the
condition will be inserted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52371 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-16 22:34:15 +00:00
Chris Lattner
d34ff14358 switch TypeHasCycleThroughItself from using an std::set to using a SmallPtrSet, 
this speeds up the linking testcase in PR1860 by 44% (.379 -> 0.263)


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52365 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-16 21:20:58 +00:00
Chris Lattner
a4477f9b31 stop making PATypeHolder's so crazily. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52364 91177308-0d34-0410-b5e6-96231b3b80d8
 2008-06-16 21:17:12 +00:00