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Author SHA1 Message Date
Dan Gohman
66e692dd8f Change these schedulers to not emit no-ops. It turns out that 
the RR scheduler actually does look at latency values, but it
doesn't use a hazard recognizer so it has no way to know when
a no-op is needed, as opposed to just stalling and incrementing
the cycle count.

llvm-svn: 59759
 2008-11-21 00:10:42 +00:00
Bill Wendling
4020b2b907 Fix error where it wasn't getting the correct caller function. 
llvm-svn: 59758
 2008-11-21 00:09:21 +00:00
Bill Wendling
f85b54db6c If the function being inlined has a higher stack protection level than the 
inlining function, then increase the stack protection level on the inlining
function.

llvm-svn: 59757
 2008-11-21 00:06:32 +00:00
Bill Wendling
d0bd6f6e73 Introduce two new "add" intrinsics. These return the sum plus a bit indicating 
that an overflow/carry occured. These are converted into ISD::[SU]ADDO nodes,
which are lowered in a target-independent way into something sane. Eventually,
each target can implement their own method of checking the overflow/carry flags.

llvm-svn: 59756
 2008-11-21 00:05:31 +00:00
Oscar Fuentes
cbfb4cf881 CMake: More documentation. 
llvm-svn: 59755
 2008-11-20 23:35:09 +00:00
Dan Gohman
b8f4f58938 Delete redundant inline keywords. 
llvm-svn: 59754
 2008-11-20 22:10:21 +00:00
Dan Gohman
0ba3f17e9f Doxygenate comments. 
llvm-svn: 59753
 2008-11-20 22:09:52 +00:00
Oscar Fuentes
378c8a6a81 CMake: Some documentation. Work in progress. 
llvm-svn: 59752
 2008-11-20 22:05:48 +00:00
Dan Gohman
fd06b62f9c Treat mid-block labels the same as terminators when building the 
MachineInstr scheduling DAG, meaning they implicitly depend on all
preceding defs. This fixes Benchmarks/Shootout-C++/except and
Regression/C++/EH/simple_rethrow in
  -relocation-model=pic -disable-post-RA-scheduler=false
mode.

llvm-svn: 59747
 2008-11-20 19:58:35 +00:00
Dan Gohman
3b3afa49f8 Add another machine-code printing pass when post-pass scheduling is run. 
llvm-svn: 59746
 2008-11-20 19:54:21 +00:00
Devang Patel
0c43c5a17f Don't forget arguments! 
llvm-svn: 59745
 2008-11-20 19:50:17 +00:00
Dan Gohman
7e92e53e25 Test -pre-RA-sched=fast too, for completeness. 
llvm-svn: 59741
 2008-11-20 19:26:04 +00:00
Oscar Fuentes
3c4de0ae87 CMake: Option for building with -fPIC. 
llvm-svn: 59739
 2008-11-20 19:13:51 +00:00
Scott Michel
4026c8f44a CellSPU: 
(a) Remove moved file (SPUAsmPrinter.cpp) to make svn happy.
(b) Remove truncated stores that will never be used.
(c) Add initial support for __muldi3 as a libcall.

llvm-svn: 59734
 2008-11-20 16:36:33 +00:00
Duncan Sands
84e2128d5e Add some documentation. 
llvm-svn: 59727
 2008-11-20 10:34:43 +00:00
Mon P Wang
76b86c996e Allow XMM2 and XMM3 to be used for non ABI compliant code. 
llvm-svn: 59720
 2008-11-20 07:48:19 +00:00
Bill Wendling
939e13da58 80-column violation. 
llvm-svn: 59718
 2008-11-20 07:24:30 +00:00
Bill Wendling
cfc163d249 Reformatting. No functionality change. 
llvm-svn: 59717
 2008-11-20 07:23:34 +00:00
Chris Lattner
527a103e8e add an operator= to assign to smallstring. 
llvm-svn: 59715
 2008-11-20 07:09:17 +00:00
Scott Michel
c4efcfdcd6 CellSPU: Custom lower truncating stores of i8 to i1 (should not have been 
promote), fix signed conversion of indexed offsets.

llvm-svn: 59707
 2008-11-20 05:01:09 +00:00
Nick Lewycky
f95bff882d undef beats zero. Fix this missed optimization opportunity. Patch by Matt Elder! 
llvm-svn: 59705
 2008-11-20 04:36:13 +00:00
Scott Michel
0877d8890e Revert accidental last patch 
llvm-svn: 59704
 2008-11-20 04:28:08 +00:00
Scott Michel
d811d41fe7 CellSPU: Adjust spacing/tabulation 
llvm-svn: 59703
 2008-11-20 04:26:21 +00:00
Dan Gohman
d5d4c72217 Remove a remnant of list-burr's fast mode. 
llvm-svn: 59702
 2008-11-20 03:32:45 +00:00
Dan Gohman
dd45a57684 Factor out the SethiUllman numbering logic from the list-burr and 
list-tdrr schedulers into a common base class.

llvm-svn: 59701
 2008-11-20 03:30:37 +00:00
Dan Gohman
63cc6f6c63 Remove the "fast" form of the list-burr scheduler, and use the 
dedicated "fast" scheduler in -fast mode instead, which is
faster. This speeds up llc -fast by a few percent on some
testcases -- the speedup only happens for code not handled by
fast-isel.

llvm-svn: 59700
 2008-11-20 03:11:19 +00:00
Oscar Fuentes
049ffc2c59 CMake: when building shared libraries, use -fPIC for compiling 
partially linked objects.

llvm-svn: 59699
 2008-11-20 03:10:17 +00:00
Dan Gohman
b8e32efb30 Facter AddPseudoTwoAddrDeps and associated infrasructure out of 
the list-burr scheduler so that it can be used by the list-tdrr
scheduler too.

llvm-svn: 59698
 2008-11-20 02:45:51 +00:00
Evan Cheng
2805dcc9a0 - Register scavenger should use MachineRegisterInfo and internal map to find the first use of a register after a given machine instruction. 
- When scavenging a register, in addition to the spill, insert a restore before the first use.
- Abort if client is looking to scavenge a register even when a previously scavenged register is still live.

llvm-svn: 59697
 2008-11-20 02:32:35 +00:00
Evan Cheng
bc91bb7658 Fix a thinko. MO is getOperand(i-1) so we don't have to adjust e. 
llvm-svn: 59696
 2008-11-20 02:25:51 +00:00
Dan Gohman
6d0d98d450 Add #include <climits> to get the definition of INT_MAX. 
llvm-svn: 59692
 2008-11-20 01:41:34 +00:00
Dan Gohman
77e3f07d4b Factor out the code for verifying the work of the scheduler, 
extend it a bit, and make use of it in all schedulers, to
ensure consistent checking.

llvm-svn: 59689
 2008-11-20 01:26:25 +00:00
Devang Patel
20dec363b1 Do not forget llvm.dbg.declare's first argument while removing debugging information. 
llvm-svn: 59688
 2008-11-20 01:20:42 +00:00
Bill Wendling
023e8ff42c Copy the tblgen utility. 
llvm-svn: 59681
 2008-11-20 00:11:57 +00:00
Dan Gohman
d8b57556ce Simplify this code a little. In the fast scheduler, CreateNewSUnit 
and CreateClone don't add any extra value.

llvm-svn: 59679
 2008-11-19 23:39:02 +00:00
Evan Cheng
c8ecb037a2 Eliminate a compile time warning. 
llvm-svn: 59678
 2008-11-19 23:21:33 +00:00
Evan Cheng
b434100baa Eliminate a compile time warning. 
llvm-svn: 59677
 2008-11-19 23:21:11 +00:00
Dan Gohman
f4b2751ee6 Experimental post-pass scheduling support. Post-pass scheduling 
is currently off by default, and can be enabled with
-disable-post-RA-scheduler=false.

This doesn't have a significant impact on most code yet because it doesn't
yet do anything to address anti-dependencies and it doesn't attempt to
disambiguate memory references. Also, several popular targets
don't have pipeline descriptions yet.

The majority of the changes here are splitting the SelectionDAG-specific
code out of ScheduleDAG, so that ScheduleDAG can be moved to
libLLVMCodeGen.a. The interface between ScheduleDAG-using code and
the rest of the scheduling code is somewhat rough and will evolve.

llvm-svn: 59676
 2008-11-19 23:18:57 +00:00
Dan Gohman
32a8ee5c90 Move the code for printing a graph node label for an SUnit into 
a virtual method of SelectionDAG.

llvm-svn: 59667
 2008-11-19 22:09:45 +00:00
Dan Gohman
b5ce3ebed1 Convert SUnit's dump method into a print method and implement 
dump in terms of it.

llvm-svn: 59665
 2008-11-19 21:32:03 +00:00
Oscar Fuentes
212b29b9d9 CMake: Removed source file. 
llvm-svn: 59662
 2008-11-19 19:32:19 +00:00
Devang Patel
e5a07d989e Do not use separate utility to walk all instructions and remove dead dbg intrinsics. Let instcombiner do this job. 
llvm-svn: 59659
 2008-11-19 19:01:37 +00:00
Devang Patel
79a342d7d3 Let instcombiner remove redundant dbg intrinsics. 
llvm-svn: 59658
 2008-11-19 18:59:41 +00:00
Devang Patel
cd2e68c069 If there are two consecutive llvm.dbg.stoppoint calls then 
it is likely that the optimizer deleted code in between these
two intrinsics. Keep only the last llvm.dbg.stoppoint in this case.

llvm-svn: 59657
 2008-11-19 18:56:50 +00:00
Oscar Fuentes
c4345795b0 CMake: Removed source file from lib/Target/PIC16/CMakeLists.txt. 
llvm-svn: 59655
 2008-11-19 18:42:25 +00:00
Scott Michel
583eadfb46 CellSPU: Do not custom lower i1 stores, rely on type legalization to do the 
right thing and promote the store to i8.

llvm-svn: 59648
 2008-11-19 17:45:08 +00:00
Stuart Hastings
545f47a2cb <rdar://problem/6351057> 
Discourage (allocate last) use of x86_64 R12 and R13 due to their
longer instruction encodings.

llvm-svn: 59644
 2008-11-19 17:19:35 +00:00
Andrew Lenharth
54748faa8a ignore the -m elf_i386 directive used in the linux kernel 
llvm-svn: 59642
 2008-11-19 17:00:08 +00:00
Dan Gohman
60e2650b09 Revert r59640. It broke this test for builds that aren't 
configured with llvm-gcc.

llvm-svn: 59641
 2008-11-19 16:24:37 +00:00
Dan Gohman
1b9557279c Use %llvmgcc -xassembler instead of invoking as directly. This avoids 
problems for example when LLVM is built with --with-extra-options=-m64
and as defaults to x86-32 mode.

llvm-svn: 59640
 2008-11-19 16:02:14 +00:00