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Author SHA1 Message Date
Jakob Stoklund Olesen
fc2fcb4165 Properly shrink live ranges after deleting dead copies. Clean up after all joined copies. 
LiveInterval::shrinkToUses recomputes the live range from scratch instead of
removing snippets. This should avoid the problem with dangling live ranges.

Leave physreg identity copies alone. They can be created when joining a virtreg
with a physreg. They don't affect register allocation, and they will be removed
by the rewriter.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131521 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 04:18:19 +00:00
Cameron Zwarich
141ec63962 Fix typo. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131519 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 02:29:50 +00:00
Cameron Zwarich
7d336c0c68 Fix more of PR8825 by correctly using rGPR registers when lowering atomic 
compare-and-swap intrinsics.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131518 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 02:20:07 +00:00
Eli Friedman
ef819d0ed8 Start trying to make InstCombine preserve more debug info. The idea here is to set the debug location on the IRBuilder, which will be then right location in most cases. This should magically give many transformations debug locations, and fixing places which are missing a debug location will usually just means changing the code creating it to use the IRBuilder. 
As an example, the change to InstCombineCalls catches a common case where a call to a bitcast of a function is rewritten.

Chris, does this approach look reasonable?



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131516 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 01:28:27 +00:00
Eli Friedman
3e22cb9ec3 Use ReplaceInstUsesWith instead of replaceAllUsesWith where appropriate in instcombine. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131512 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 00:32:01 +00:00
Eli Friedman
28b42afcb8 Make some of the fast-isel tests actually test fast-isel (and fix test failures). 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131510 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-18 00:00:10 +00:00
Devang Patel
d80e8ed2fa Preseve line numbers while simplifying CFG. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131508 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 23:29:05 +00:00
Cameron Zwarich
d6ffcd88ba Actually, the address operand of the Thumb2 LDREX / STREX instructions *can* 
take r13, so we can just make it a GPR. This fixes PR8825.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131507 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 23:26:20 +00:00
Cameron Zwarich
3c60ff4f3d Correct a minor problem with the Thumb2 LDREX and STREX instruction encodings. They 
were marked as taking a tGPR when in reality they take an rGPR.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131506 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 23:11:12 +00:00
Bill Wendling
f5c95b889f Conditionalize the format of the GCOV files by target type. Darwin uses the 4.2 
format.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131503 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 23:05:13 +00:00
Eli Friedman
9c4dae6b0b Make fast-isel miss counting in -stats and -fast-isel-verbose take terminators into account; since there are many fewer isel misses with recent changes, misses caused by terminators are more significant. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131502 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 23:02:10 +00:00
Dan Gohman
1b32896bd2 Misc. code cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131497 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 22:22:52 +00:00
Dan Gohman
71dc7c9d89 Misc. code cleanups. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131495 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 22:20:36 +00:00
Stuart Hastings
ca1ef48585 X86 pmovsx/pmovzx ignore the upper half of their inputs. 
rdar://problem/6945110


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131493 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 22:13:31 +00:00
Tanya Lattner
c81c9709ef vrev is incorrectly defined in the perfect shuffle table. The ordering is backwards (should be 0x3210 versus 0x1032) which exposed a bug when doing a shuffle on a 4xi16. I've attached a test case. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131488 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 20:48:40 +00:00
Devang Patel
de98568bf8 Preserve line number information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131482 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 20:00:02 +00:00
Devang Patel
d9b4996637 Set debug loc for new load instruction. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131481 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 19:43:38 +00:00
Devang Patel
c9ea771cb8 Preserve line number information. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131480 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 19:43:06 +00:00
Galina Kistanova
416b7117b7 Move test for appropriate directory. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131477 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 19:06:43 +00:00
Mon P Wang
fee22869ca Enable autodetect of popcnt 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131476 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 18:33:37 +00:00
Jim Grosbach
7fcbfe38d2 Frame indices are signed. Update MachineOperand methods accordingly. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131475 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 18:29:21 +00:00
Eli Friedman
19515b4e52 Add x86 fast-isel for calls returning first-class aggregates. rdar://9435872. 
This is r131438 with a couple small fixes.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131474 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 18:29:03 +00:00
Eli Friedman
b8e0d3412c Clean up the mess created by r131467+r131469. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131471 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 18:02:22 +00:00
Stuart Hastings
6db2c2fe21 Revert 131467 due to buildbot complaint. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131469 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 16:59:46 +00:00
Stuart Hastings
504421e327 Fix an obscure issue in X86_64 parameter passing: if a tiny byval is 
passed as the fifth parameter, insure it's passed correctly (in R9).
rdar://problem/6920088


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131467 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 16:45:55 +00:00
Jakob Stoklund Olesen
6e3b3e2122 Tweak cross-class coalescing to be more aggressive when the target class is small. 
The greedy register allocator has live range splitting and register class
inflation, so it can actually fully undo this join, including restoring the
original register classes.

We still don't want to do this for long live ranges, mostly because of the high
register pressure of there are many constrained live ranges overlapping.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131466 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 16:38:37 +00:00
Rafael Espindola
ab078f0232 Don't include information about the build into the information returned by 
getHostTriple. This fixes a 32 bit clang running on a 64 bit ubuntu.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131463 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 15:26:34 +00:00
Nadav Rotem
86694297ff Fix a bug in PerformEXTRACT_VECTOR_ELTCombine. The code created an ADD SDNode 
with two different types, in cases where the index and the ptr had different
types.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131461 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 08:31:57 +00:00
Eric Christopher
6abb7bae10 Update comment. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131459 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 08:16:14 +00:00
Eric Christopher
c324f72ab7 Support XOR and AND optimization with no return value. 
Finishes off rdar://8470697


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131458 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 08:10:18 +00:00
Eric Christopher
811c2b7110 Couple less magic numbers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131457 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 07:50:41 +00:00
Eric Christopher
8102bf003e Make this code a little less magic number laden. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131456 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 07:47:55 +00:00
Chris Lattner
5d4718b1c7 add a note 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131455 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 07:22:33 +00:00
Stuart Hastings
71753050b1 Drop lli, revise test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131452 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 02:38:59 +00:00
Eli Friedman
c93943b6fe Back out r131444 and r131438; they're breaking nightly tests. I'll look into 
it more tomorrow.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131451 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 02:36:59 +00:00
Eli Friedman
b70eac42e7 Fix test. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131444 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 00:39:14 +00:00
Evan Cheng
50ecb195e1 Add target triple so test doesn't fail on Windows machines. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131439 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 00:15:58 +00:00
Eli Friedman
cdc9a20561 Add x86 fast-isel for calls returning first-class aggregates. rdar://9435872. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131438 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 00:13:47 +00:00
Owen Anderson
e1edb17bc3 @llvm.lifetime.begin acts as a load, not @llvm.lifetime.end. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131437 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-17 00:05:49 +00:00
Jakob Stoklund Olesen
f5497fb1b4 Teach LiveInterval::isZeroLength about null SlotIndexes. 
When instructions are deleted, they leave tombstone SlotIndex entries.
The isZeroLength method should ignore these null indexes.

This causes RABasic to sometimes spill a callee-saved register in the
abi-isel.ll test, so don't run that test with -regalloc=basic.  Prioritizing
register allocation according to spill weight can cause more registers to be
used.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131436 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 23:50:05 +00:00
Jim Grosbach
0c72076190 Kill some dead code. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131431 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 22:24:07 +00:00
Dan Gohman
975716af1b Delete unused variables. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131430 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 22:19:54 +00:00
Dan Gohman
b3dbd4a0b6 Trim #includes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131429 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 22:14:50 +00:00
Dan Gohman
f316eb7074 Fix whitespace and 80-column violations. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131428 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 22:09:53 +00:00
Devang Patel
a8992b3e72 There is no need to force DebugLoc on a PHI at this point. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131427 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 22:05:03 +00:00
Jim Grosbach
62427ae8d3 Track how many insns fast-isel successfully selects as well as how many it 
misses.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131426 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:51:07 +00:00
Eli Friedman
57f4b03621 Remove dead code. Fix associated test to use FileCheck. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131424 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:28:22 +00:00
Devang Patel
227dfdb3c4 Preserve debug info for unused zero extended boolean argument. 
Radar 9422775.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131422 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:24:05 +00:00
Charles Davis
cacdc4fc41 Add a method I forgot in the last commit. Don't worry, this one passed 
self-host :).


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131421 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:13:58 +00:00
Eli Friedman
482feb33b2 Make fast-isel work correctly s/uadd.with.overflow intrinsics. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131420 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-05-16 21:06:17 +00:00