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Author SHA1 Message Date
Eli Friedman
268637ed0f Implement expansion in type legalization for add/sub with overflow. The 
expansion is the same as that used by LegalizeDAG.

The resulting code sucks in terms of performance/codesize on x86-32 for a
64-bit operation; I haven't looked into whether different expansions might be
better in general.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105378 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 03:49:50 +00:00
Eli Friedman
db1bf34178 Remove some already-fixed README entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105377 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 01:47:31 +00:00
Eli Friedman
a04a2c0a50 Remove README entry which no longer compiles to something sane. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105376 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 01:16:51 +00:00
Eli Friedman
2ad7e433c9 Remove a fixed item, update a couple partially-fixed items. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105375 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 01:01:48 +00:00
Jakob Stoklund Olesen
8b89c64b5c Use the fast register allocator by default for -O0 builds. 
This affects both llvm-gcc and clang.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105372 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 00:39:06 +00:00
Jakob Stoklund Olesen
ead06be02f Use readsWritesVirtualRegister instead of counting uses and defs when inserting 
spills and reloads.

This means that a partial define of a register causes a reload so the other
parts of the register are preserved.

The reload can be prevented by adding an <imp-def> operand for the full
register. This is already done by the coalescer and live interval analysis where
relevant.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105369 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-03 00:07:47 +00:00
Jakob Stoklund Olesen
02571a3a1f Add full register <imp-def> operands when the coalescer is creating partial 
register updates.

These operands tell the spiller that the other parts of the partially defined
register are don't-care, and a reload is not necessary.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105361 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 23:22:11 +00:00
Devang Patel
6209869f83 Speedup bitcode writer. Do not walk all values for all functions to emit function local metadata. In one testcase, probably worst case scenario, the 70x speed up is seen. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105360 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 23:05:04 +00:00
Bill Wendling
05c68374c1 Compulsive reformating. No functionalitical changes. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105359 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 23:04:26 +00:00
Jakob Stoklund Olesen
9edf7deb37 Slightly change the meaning of the reMaterialize target hook when the original 
instruction defines subregisters.

Any existing subreg indices on the original instruction are preserved or
composed with the new subreg index.

Also substitute multiple operands mentioning the original register by using the
new MachineInstr::substituteRegister() function. This is necessary because there
will soon be <imp-def> operands added to non read-modify-write partial
definitions. This instruction:

  %reg1234:foo = FLAP %reg1234<imp-def>

will reMaterialize(%reg3333, bar) like this:

  %reg3333:bar-foo = FLAP %reg333:bar<imp-def>

Finally, replace the TargetRegisterInfo pointer argument with a reference to
indicate that it cannot be NULL.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105358 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 22:47:25 +00:00
Benjamin Kramer
4839d872fc Update Readme and Makefiles for the new gtest. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105355 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 22:02:57 +00:00
Benjamin Kramer
57240ff6e2 Merge gtest-1.5.0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105354 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 22:02:30 +00:00
Benjamin Kramer
190f8ee25a Merge gtest-1.4.0. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105353 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 22:02:11 +00:00
Benjamin Kramer
e4b9c93fc1 Merge gtest-1.3.0. 
OSX users: make sure that CrashReporter is disabled when running unit tests.
Death tests are enabled now so you'll get a ton of message boxes.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105352 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 22:01:25 +00:00
Jim Grosbach
18f30e6f5e Clean up 80 column violations. No functional change. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105350 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 21:53:11 +00:00
Nate Begeman
7c8c8830a9 arm_neon.h emitter now mostly complete for the purposes of initial testing. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105349 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 21:53:00 +00:00
Rafael Espindola
42d075c4fb Remove the TargetRegisterClass member from CalleeSavedInfo 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105344 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 20:02:30 +00:00
Eli Friedman
962f549d20 Fix comment so it doesn't include comments which are irrelevant to the x86 
backend.  Add a FIXME noting what can be fixed here.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105342 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 19:35:46 +00:00
Dan Gohman
71c62a2977 Use comments to document non-obvious code rather than 
mailing list archives.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105341 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 19:13:40 +00:00
Devang Patel
354eb7ea96 Skip identical instruction while calculating DBG_VALUE range. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105340 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 19:05:13 +00:00
Bob Wilson
91a74da036 Rename canCombinedSubRegIndex method to something more grammatically correct 
and tidy up the comment describing it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105339 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 18:54:47 +00:00
Rafael Espindola
20fae65181 Replace ARM's getCalleeSavedRegClasses with a simpler solution 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105335 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 17:54:50 +00:00
Jim Grosbach
63ef367954 remove trailing whitespace 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105333 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 17:45:54 +00:00
Devang Patel
b9abe9f2ad Use local small vector. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105332 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 16:42:51 +00:00
Rafael Espindola
691820a1a0 Remove unused function. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105325 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 15:44:20 +00:00
Jim Grosbach
086723d244 Not all entries in the range will have an SUnit. Check for that when looking 
for debug information.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105324 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 15:29:36 +00:00
Rafael Espindola
b26f27969e Update the documentation, getCalleeSavedRegClasses is not required anymore. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105323 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 14:03:11 +00:00
Rafael Espindola
6f07bd6ae8 cleanup 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105322 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 13:53:17 +00:00
Rafael Espindola
ce48c1de82 Remove uses of getCalleeSavedRegClasses from outside the 
backends and removes the virtual declaration. With that out of the way
I should be able to cleanup one backend at a time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105321 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 12:39:06 +00:00
Duncan Sands
8dbbacedcd Pacify recent gcc: remove a pointless const qualifier. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105318 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 08:37:30 +00:00
Nate Begeman
e66aab553c Checkpoint; handle 'int' and 'void' correctly 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105316 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 07:14:28 +00:00
Nate Begeman
af905efc61 Emit full function prototypes. Definitions & typedefs to come. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105315 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 06:17:19 +00:00
Evan Cheng
9d709a8edb Enable machine cse of instructions which define physical registers. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105308 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 01:08:27 +00:00
Nate Begeman
22237771d8 Checkpoint arm_neon.h generation with tablegen 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105307 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 00:34:55 +00:00
Eli Friedman
a993f0a45f Don't try to custom-lower 64-bit add-with-overflow and friends on x86-32; the 
x86 backend currently doesn't know how to handle them.

This doesn't really fix anything because LegalizeTypes doesn't know how to
handle them either.  We do get a better error message, though.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105305 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 00:27:18 +00:00
Bob Wilson
b2c2a972b0 Fix an obvious mistake: don't change the operands until all of them have been 
checked and it is safe to proceed with the changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105304 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 00:16:08 +00:00
Eli Friedman
b242563741 Remove outdated README entries. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105303 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-02 00:10:36 +00:00
Jim Grosbach
533934e06e Update debug information when breaking anti-dependencies. rdar://7759363 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105300 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 23:48:44 +00:00
Sean Hunt
891f27380c Fix comment 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105297 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 23:29:39 +00:00
Devang Patel
735419dfe7 DwarfWrite is now smart enough to drop debug value pointing to undefined register. Update this test to avoid this. 
iSel not properly lowring argument into a well formed DBG_VALUE in some cases is a separate issue and not related to the test in this testcase.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105295 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 23:01:43 +00:00
Jakob Stoklund Olesen
a5135f60dd Properly compose subregister indices when coalescing. 
The comment about ordering of subreg indices is no longer true.
This exposed a bug in the new substVirtReg method that is also fixed.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105294 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 22:39:25 +00:00
Jim Grosbach
23d3d4595c Remove unused code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105293 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 21:56:30 +00:00
Devang Patel
f2e7767624 Ignore line number of debug value in undefined register. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105292 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 21:43:09 +00:00
Jim Grosbach
69081e9291 fix think-o 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105291 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 21:35:50 +00:00
Dan Gohman
d8acddda58 Fix the allocation of shadow space for the Win64 calling convention 
in X86FastISel. Patch by Jan Sjodin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105290 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 21:09:47 +00:00
Jim Grosbach
aeafb374e2 Simplify things a bit more. Fix prototype to use SmallVectorImpl and 
change a few SmallVectors to vanilla C arrays.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105289 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 21:06:46 +00:00
Dan Gohman
10e7726e6c Fix the noalias checking so that it doesn't worry about 
an argument aliasing itself. Thanks Duncan!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105288 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 20:51:40 +00:00
Devang Patel
9126c0d42a Keep track of incoming debug value of unused argument. 
Radar 7927666.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105285 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 19:59:01 +00:00
Dan Gohman
956b349034 Fill in missing support for ISD::FEXP, ISD::FPOWI, and friends. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105283 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 18:35:14 +00:00
Jim Grosbach
2f3257ef04 Add a FIXME 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@105282 91177308-0d34-0410-b5e6-96231b3b80d8
 2010-06-01 18:06:35 +00:00