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23641 Commits

Author SHA1 Message Date
Owen Anderson
0b0017e514 Avoid a redundant call. 
llvm-svn: 53040
 2008-07-02 18:15:31 +00:00
Owen Anderson
e20158affb Add support to ADCE for pruning unreachable blocks. This addresses the final 
part of PR2509.

llvm-svn: 53038
 2008-07-02 18:05:19 +00:00
Duncan Sands
21e2a711e3 Add a new getMergeValues method that does not need 
to be passed the list of value types, and use this
where appropriate.  Inappropriate places are where
the value type list is already known and may be
long, in which case the existing method is more
efficient.

llvm-svn: 53035
 2008-07-02 17:40:58 +00:00
Owen Anderson
764fe3df94 Use DenseSet rather than SmallPtrSet for the alive set. Using SmallPtrSet 
with a huge "size" parameter is actually quite inefficient.

llvm-svn: 53034
 2008-07-02 17:32:04 +00:00
Owen Anderson
5747d627e0 A better fix for PR2503 that doesn't pessimize GVN in the presence of unreachable blocks. 
llvm-svn: 53032
 2008-07-02 17:20:16 +00:00
Mon P Wang
55f4371807 Fixed problem in EmitStackConvert where the source and target type 
have different alignment by creating a stack slot with the max
alignment of source and target type.

llvm-svn: 53031
 2008-07-02 17:07:12 +00:00
Chris Lattner
8bcad39c9a instead of aborting on shifts of i1, just implicitly fold them. 
The dag combiner can produce a shift of i1 when folding icmp i1's.

llvm-svn: 53030
 2008-07-02 17:01:57 +00:00
Duncan Sands
b7d8348f0d Fix typo compounded by a cut-and-pasto. 
llvm-svn: 53012
 2008-07-02 10:03:53 +00:00
Duncan Sands
5d5f1e800d Let AnalyzeNewNode take care of calling ExpungeNode. 
This makes sure that all new nodes are expunged, not
just those the top node of a new subtree.

llvm-svn: 53011
 2008-07-02 09:56:41 +00:00
Evan Cheng
3921085102 - Use a faster priority comparison function if -fast. 
- Code clean up.

llvm-svn: 53010
 2008-07-02 09:23:51 +00:00
Chris Lattner
06545d1c4a Add a new (simple) StringMap::clear method, patch by Pratik 
Solanki!

llvm-svn: 53008
 2008-07-02 05:26:32 +00:00
Devang Patel
5d8e832471 reuse vectors. 
llvm-svn: 53007
 2008-07-02 01:44:29 +00:00
Devang Patel
9140e998b4 Fix comment. 
llvm-svn: 53006
 2008-07-02 01:31:19 +00:00
Devang Patel
68d9a25bcd Preserve loop data so that it is not fetched everytime it is needed. 
Keep track of currentLoop.

llvm-svn: 53005
 2008-07-02 01:18:13 +00:00
Bill Wendling
83caf5a9d5 Use the canonical form for getting an empty structure. 
llvm-svn: 53003
 2008-07-02 00:50:02 +00:00
Bill Wendling
aa45e38a17 Sorry. I couldn't sleep at night knowing I put these ugly casts into the source tree. 
llvm-svn: 53001
 2008-07-02 00:35:47 +00:00
Owen Anderson
1530481dd3 Add a version of AddString that takes a const char* so we can avoid extraneous 
conversions to std::string.

llvm-svn: 52995
 2008-07-01 23:49:59 +00:00
Bill Wendling
27c38cee90 Darwin doesn't need exception handling information for the "move" info when 
debug information is being output, because it's leet!

llvm-svn: 52994
 2008-07-01 23:34:48 +00:00
Evan Cheng
5389352c98 Avoid creating expensive comment string if it's not going to be printed. 
llvm-svn: 52992
 2008-07-01 23:18:29 +00:00
Owen Anderson
b258a71a37 No need to use std::distance. We can just count the number of operands 
much more cheaply.

llvm-svn: 52990
 2008-07-01 22:34:11 +00:00
Evan Cheng
508e82fcfc Simplify addRegisterKilled and addRegisterDead. 
llvm-svn: 52988
 2008-07-01 22:21:21 +00:00
Bill Wendling
c695823456 - Update comments. 
- Don't use GlobalVariable::LinkageTypes when unsigned works.

llvm-svn: 52987
 2008-07-01 22:08:01 +00:00
Dale Johannesen
d7ea0ac4fd Fix longstanding thinko: don't exclude 
predessors of exit blocks from tail merging
consideration.

llvm-svn: 52985
 2008-07-01 21:50:14 +00:00
Devang Patel
a4a94290b8 Disable dom info verifier by default. 
llvm-svn: 52983
 2008-07-01 21:36:11 +00:00
Evan Cheng
8a30a09180 Eliminate a compile time warning. 
llvm-svn: 52982
 2008-07-01 21:35:46 +00:00
Owen Anderson
8564cd9dfe Add a version of AsmPrinter::EOL that takes a const char* so that we don't have to do as many implicit std::string constructions. 
Unfortunately, this doesn't appear to translate to a real speedup in practice.

llvm-svn: 52981
 2008-07-01 21:16:27 +00:00
Bill Wendling
d7ccfdb867 Remove warning about initialization order. 
llvm-svn: 52980
 2008-07-01 21:00:31 +00:00
Devang Patel
0fc2badc38 Fix typos in comments. 
Thanks for the feedback!

llvm-svn: 52978
 2008-07-01 19:50:56 +00:00
Dan Gohman
83c1b4cede Prune a few dependencies on MachineFunction.h. 
llvm-svn: 52976
 2008-07-01 18:15:35 +00:00
Evan Cheng
9a960dc2b2 Do run ComputeLiveOutVRegInfo with -fast. 
llvm-svn: 52975
 2008-07-01 18:15:04 +00:00
Evan Cheng
67ce381ffe Do not use computationally expensive scheduling heuristics with -fast. 
llvm-svn: 52971
 2008-07-01 18:05:03 +00:00
Evan Cheng
b33d6b69ab Apply Chris' suggestion. 
llvm-svn: 52970
 2008-07-01 17:59:20 +00:00
Devang Patel
1e1f4a0bdd Add dom info verifier. 
llvm-svn: 52967
 2008-07-01 17:44:24 +00:00
Owen Anderson
fe73cb09c8 Make the subregister hashtable output more readable by wrapping the lines, 
and mark it const along with the associated changes to TargetRegisterInfo.

llvm-svn: 52966
 2008-07-01 17:34:38 +00:00
Duncan Sands
d8d11501c9 Highlight that getMergeValues optimization is 
being suppressed here.

llvm-svn: 52952
 2008-07-01 08:00:49 +00:00
Owen Anderson
99a71c6ac6 Properly handle cases where a predecessor of the block being queried on is unreachable. 
This fixes PR2503, though we should also fix other passes not to emit this kind of code.

llvm-svn: 52946
 2008-07-01 00:40:58 +00:00
Owen Anderson
059d64938b Replace the dynamically computed std::set lookup method for subregisters with a hashtable-based 
version that is computed by tblgen at the time LLVM is compiled.

llvm-svn: 52945
 2008-07-01 00:18:52 +00:00
Dan Gohman
e3b796a81d Minimize duplicated code in AsmPrinter::printLabel. 
llvm-svn: 52944
 2008-07-01 00:16:26 +00:00
Dan Gohman
c8097f8c8c Split ISD::LABEL into ISD::DBG_LABEL and ISD::EH_LABEL, eliminating 
the need for a flavor operand, and add a new SDNode subclass,
LabelSDNode, for use with them to eliminate the need for a label id
operand.

Change instruction selection to let these label nodes through
unmodified instead of creating copies of them. Teach the MachineInstr
emitter how to emit a MachineInstr directly from an ISD label node.

This avoids the need for allocating SDNodes for the label id and
flavor value, as well as SDNodes for each of the post-isel label,
label id, and label flavor.

llvm-svn: 52943
 2008-07-01 00:05:16 +00:00
Evan Cheng
a40bb75480 Suppress compiler warning. 
llvm-svn: 52934
 2008-06-30 22:33:56 +00:00
Evan Cheng
488fdf516f Don't run stack slot coloring if -fast. 
llvm-svn: 52933
 2008-06-30 22:33:16 +00:00
Dan Gohman
e9f33e576d Don't use ISD namespace opcodes for MachineInstrs. 
llvm-svn: 52932
 2008-06-30 22:23:08 +00:00
Dan Gohman
082b08f33a Use a simpler but equivalent form of RecordSource. 
llvm-svn: 52931
 2008-06-30 22:21:03 +00:00
Evan Cheng
3ec3837c38 Add timing report for various sub-passes under SelectionDAGISel. 
llvm-svn: 52930
 2008-06-30 22:10:09 +00:00
Dan Gohman
c8c04b1ff4 std::ostream and std::string microoptimizations for asm printing. 
llvm-svn: 52929
 2008-06-30 22:03:41 +00:00
Dan Gohman
9997cc353f Use reserve. 
SelectionDAG::allnodes_size is linear, but that doesn't appear to
outweigh the benefit of reducing heap traffic. If it does become a
problem, we should teach SelectionDAG to keep a count of how many
nodes are live, because there are several other places where that
information would be useful as well.

llvm-svn: 52926
 2008-06-30 21:04:06 +00:00
Dan Gohman
e58f07e5d6 Update comments to new-style syntax. 
llvm-svn: 52925
 2008-06-30 21:00:56 +00:00
Dan Gohman
6cc648891b Rename ISD::LOCATION to ISD::DBG_STOPPOINT to better reflect its 
purpose, and give it a custom SDNode subclass so that it doesn't
need to have line number, column number, filename string, and
directory string, all existing as individual SDNodes to be the
operands.

This was the only user of ISD::STRING, StringSDNode, etc., so
remove those and some associated code.

This makes stop-points considerably easier to read in
-view-legalize-dags output, and reduces overhead (creating new
nodes and copying std::strings into them) on code containing
debugging information.

llvm-svn: 52924
 2008-06-30 20:59:49 +00:00
Evan Cheng
3f664b6fd3 Split scheduling from instruction selection. 
llvm-svn: 52923
 2008-06-30 20:45:06 +00:00
Dale Johannesen
30d136e2c6 No need to align the stack if there are no stack 
objects.  Fixes a couple of tests on Linux.

llvm-svn: 52921
 2008-06-30 20:40:16 +00:00