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202 Commits

Author SHA1 Message Date
Arnaud A. de Grandmaison af37ad19a9 [LiveVariables] Improve isLiveOut runtime performances. NFC. 
On large goto table based interpreters, where phi nodes can have (very) large
fan-ins, isLiveOut exhibited poor performances: about 40% of the full
codegen time was spent in PHIElim, sorting MachineBasicBlock addresses.

This patch improve the performances for such cases, and does not show
compile time regressions on the LNT, at bootstrap (llvm+clang+lldb) or
any other benchmarks we have in-house.

llvm-svn: 239510
 2015-06-11 07:50:21 +00:00
Benjamin Kramer 799003bf8c Re-sort includes with sort-includes.py and insert raw_ostream.h where it's used. 
llvm-svn: 232998
 2015-03-23 19:32:43 +00:00
Eric Christopher 307c2cb26f Remove unnecessary TargetMachine.h includes. 
llvm-svn: 219672
 2014-10-14 07:22:08 +00:00
Dylan Noblesmith 17f05a3fc6 CodeGen/LiveVariables: use vector::assign() 
Address review comments.

llvm-svn: 216426
 2014-08-26 02:03:25 +00:00
Dylan Noblesmith 6e69927d03 CodeGen/LiveVariables: hoist out code in nested loops 
This makes runOnMachineFunction vastly more readable.

llvm-svn: 216368
 2014-08-25 01:59:49 +00:00
Dylan Noblesmith 46a922c191 CodeGen/LiveVariables: switch to std::vector 
No functionality change.

llvm-svn: 216367
 2014-08-25 01:59:42 +00:00
Craig Topper 4627679cec Use range based for loops to avoid needing to re-mention SmallPtrSet size. 
llvm-svn: 216351
 2014-08-24 23:23:06 +00:00
Eric Christopher fc6de428c8 Have MachineFunction cache a pointer to the subtarget to make lookups 
shorter/easier and have the DAG use that to do the same lookup. This
can be used in the future for TargetMachine based caching lookups from
the MachineFunction easily.

Update the MIPS subtarget switching machinery to update this pointer
at the same time it runs.

llvm-svn: 214838
 2014-08-05 02:39:49 +00:00
Eric Christopher d913448b38 Remove the TargetMachine forwards for TargetSubtargetInfo based 
information and update all callers. No functional change.

llvm-svn: 214781
 2014-08-04 21:25:23 +00:00
Alexey Samsonov f74bde6735 Convert more loops to range-based equivalents 
llvm-svn: 207714
 2014-04-30 22:17:38 +00:00
Alexey Samsonov 41b977dffd Convert several loops over MachineFunction basic blocks to range-based loops 
llvm-svn: 207683
 2014-04-30 18:29:51 +00:00
Craig Topper c0196b1b40 [C++11] More 'nullptr' conversion. In some cases just using a boolean check instead of comparing to nullptr. 
llvm-svn: 206142
 2014-04-14 00:51:57 +00:00
Craig Topper 2cd5ff8003 Use SmallVectorImpl& instead of SmallVector to avoid repeating small vector size. 
llvm-svn: 186098
 2013-07-11 16:22:38 +00:00
Craig Topper e1c1d363a5 Use SmallVectorImpl instead of SmallVector for iterators and references to avoid specifying the vector size unnecessarily. 
llvm-svn: 185512
 2013-07-03 05:11:49 +00:00
Chad Rosier c7505ef8ba Simplify logic now that r182490 is in place. No functional change intended. 
llvm-svn: 182526
 2013-05-22 22:26:05 +00:00
Jakob Stoklund Olesen c338679c9d Remove special-casing of return blocks for liveness. 
Now that return value registers are return instruction uses, there is no
need for special treatment of return blocks.

llvm-svn: 174416
 2013-02-05 18:21:52 +00:00
Chandler Carruth ed0881b2a6 Use the new script to sort the includes of every file under lib. 
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131
 2012-12-03 16:50:05 +00:00
Jakob Stoklund Olesen c30a9af2d7 Switch most getReservedRegs() clients to the MRI equivalent. 
Using the cached bit vector in MRI avoids comstantly allocating and
recomputing the reserved register bit vector.

llvm-svn: 165983
 2012-10-15 21:57:41 +00:00
Manman Ren 19f49ac624 Release build: guard dump functions with 
"#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)"

No functional change. Update r163339.

llvm-svn: 163653
 2012-09-11 22:23:19 +00:00
Benjamin Kramer 851c941b8b LiveVariables: Compute a set of defs and kills to speed up updating LV during critical edge splitting. 
Previously we checked if the register is def'd in a block via the def/use list a
nd walked the list of kills to check if the register is killed in a block. Both
of these checks can be made much cheaper by walking the block first and
recording all defs and kills.

This reduces the compile time of the test case from PR13651 from 40s to 15s at
-O2. The compile time is still dominated by LV updating but now the main culprit
is SparseBitVector's slowness.

llvm-svn: 163478
 2012-09-09 11:56:14 +00:00
Manman Ren 742534c4dc Release build: guard dump functions with "ifndef NDEBUG" 
No functional change.

llvm-svn: 163339
 2012-09-06 19:06:06 +00:00
Jakob Stoklund Olesen 502e4c6ac4 Teach LiveVariables to handle <undef> operands. 
It's simple: Don't treat <undef> operands as uses, and don't assume a
virtual register has a defining instruction unless a real use has been
seen.

llvm-svn: 159061
 2012-06-23 02:23:00 +00:00
Jakob Stoklund Olesen 54038d796c Switch all register list clients to the new MC*Iterator interface. 
No functional change intended.

Sorry for the churn. The iterator classes are supposed to help avoid
giant commits like this one in the future. The TableGen-produced
register lists are getting quite large, and it may be necessary to
change the table representation.

This makes it possible to do so without changing all clients (again).

llvm-svn: 157854
 2012-06-01 23:28:30 +00:00
Lang Hames 652f21274f Fix typo. 
llvm-svn: 153846
 2012-04-01 19:27:25 +00:00
Jakob Stoklund Olesen 7d544f9165 Assert on SSA errors in LiveVariables. 
All uses of a virtual register must be dominated by its def.

llvm-svn: 152449
 2012-03-09 23:41:44 +00:00