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Commit Graph

89 Commits

Author SHA1 Message Date
Vikram S. Adve
0b0bd6e749 Only add true dep. edges from an earlier to a later instruction.
This wasn't a problem until we started putting copies for Phi values
that produced cycles in the SchedGraph!

llvm-svn: 1254
2001-11-11 01:23:27 +00:00
Vikram S. Adve
cc746868d7 Use node->getOpCode() instead of node->getMachineInstr()->getOpCode().
Much nicer.

llvm-svn: 1223
2001-11-09 02:14:20 +00:00
Vikram S. Adve
841ffd6a44 Major change to how defs are found when adding dependences (they
are now found as part of the initial walk of the machine code).
Also memory load/store instructions can be generated for non-memory
LLVM instructions, which wasn't handled before.  It is now.

llvm-svn: 1199
2001-11-08 05:20:23 +00:00
Vikram S. Adve
149bd3837d MachineCodeForMethod is now an annotation on class Method.
llvm-svn: 1198
2001-11-08 05:18:18 +00:00
Vikram S. Adve
c3993d28ca Modified graph construction to use one pass to find all defs.
Avoids having to handle some special cases that cause complex interactions
with instr. selection.

llvm-svn: 1138
2001-11-05 04:04:23 +00:00
Vikram S. Adve
ffe94cb175 Allow combinations of True/Anti/Output flags for each edge to
support, e.g., dependences on Call instructions.

llvm-svn: 1009
2001-10-28 21:45:02 +00:00
Vikram S. Adve
9515b10102 Add edges between call instructions and (a) load/store instructions, and
(b) any instructions that use or set CC registers.  Whether or not the
latter are needed really should be machine-dependent.

llvm-svn: 1008
2001-10-28 21:43:33 +00:00
Vikram S. Adve
5acd0fb918 Modify code that processes delay slots so that it preserves any
useful instructions already inserted into delay slots.

llvm-svn: 945
2001-10-22 13:49:27 +00:00
Vikram S. Adve
abed788cd9 Separate VM instruction that generates the instructions that compute a value
from the value itself (the one causing an edge) because the latter may be
a temporary used within the instruction sequence for the VM instruction.

llvm-svn: 858
2001-10-17 23:55:16 +00:00
Vikram S. Adve
41be9ce333 *** empty log message ***
llvm-svn: 857
2001-10-17 23:53:16 +00:00
Chris Lattner
b9e0153cfe * Fix privacy issues on RegToRefVecMap
* Fix initialization order problems...

llvm-svn: 762
2001-10-13 06:51:01 +00:00
Vikram S. Adve
1fe4d4071c Add graph edges due to implicit refs in each machine instruction.
llvm-svn: 724
2001-10-11 04:22:45 +00:00
Vikram S. Adve
623324dea9 Don't insert useful instructions in delay slot of a RETURN.
llvm-svn: 721
2001-10-10 20:58:11 +00:00
Chris Lattner
08b1dde37e Commit more code over to new cast style
llvm-svn: 697
2001-10-02 03:41:24 +00:00
Chris Lattner
ad1b0a1a83 Convert more code to use new style casts
Eliminate old style casts from value.h

llvm-svn: 696
2001-10-01 20:11:19 +00:00
Chris Lattner
43781f1f96 Add support for new style casts
llvm-svn: 694
2001-10-01 16:18:37 +00:00
Vikram S. Adve
180dee14b8 Bug fixes:
(1) Ensure that delay slot instructions are not moved out of place (this
    was happening for some CALL instructions).  Basically, we need to
    move all delay slot instructions out of the graph and handle them
    along with the delayed control transfer instruction.
(2) Mark scheduled instructions correctly when instructions are scheduled
    in more than one cycle in a single step (due to delay slots).

llvm-svn: 678
2001-09-30 23:43:34 +00:00
Vikram S. Adve
d376407048 Minor changes for bug fixes in SchedGraph.cpp.
llvm-svn: 677
2001-09-30 23:37:26 +00:00
Vikram S. Adve
5d7dcfd698 Two bug fixes:
(1) Add edges for Values that are written by multiple m/c instructions
(2) Add edges for LLVM operands that are not machine operands (e.g., Call args)

llvm-svn: 676
2001-09-30 23:36:58 +00:00
Chris Lattner
9b45b18404 Pull iterators out of CFG.h and CFGdecls and put them in Support directory
llvm-svn: 664
2001-09-28 22:56:31 +00:00
Vikram S. Adve
0a57de77e9 Format file header.
llvm-svn: 611
2001-09-18 12:52:03 +00:00
Vikram S. Adve
0a78fdff45 Add new entry/exit edges when removing delay slot nodes from the graph.
Renamed some header files.

llvm-svn: 610
2001-09-18 12:51:38 +00:00
Vikram S. Adve
1eb14a86ef Moved erase edge functions to class SchedGraph.
Add new dummy edges when deleting existing edges.

llvm-svn: 609
2001-09-18 12:50:40 +00:00
Vikram S. Adve
538d42467b Renamed some header files.
llvm-svn: 608
2001-09-18 12:49:39 +00:00
Vikram S. Adve
63c60c9419 Moved erase-edge functions from SchedGraphNode to SchedGraph.
Renamed some header files.

llvm-svn: 607
2001-09-18 12:49:26 +00:00
Chris Lattner
cbf2f72954 Add a forward decl, oops.
llvm-svn: 573
2001-09-14 17:55:51 +00:00
Chris Lattner
d6a98c11bc Chris seems fond of #include <vector>. Fix these. Also convert use list in
Value to a vector instead of a list.

Move SchedGraph.h & SchedPriorities.h into lib/CodeGen/InstrScheduling

llvm-svn: 572
2001-09-14 16:56:32 +00:00
Chris Lattner
de29307caa Split Target/Machine.h into three files:
* Machine.h
* InstInfo.h
* SchedInfo.h

TODO: Split out reg info stuff
llvm-svn: 567
2001-09-14 06:08:03 +00:00
Chris Lattner
a0a3946882 Make a new llvm/Target #include directory.
Move files from lib/CodeGen/TargetMachine to lib/Target
Move TargetData.h and TargetMachine.h to Target/{Data.h|Machine.h}
Prepare to split TargetMachine.h into several smaller files

llvm-svn: 566
2001-09-14 05:34:53 +00:00
Chris Lattner
7e70cdb641 Checkin changes to:
1. Clean up the TargetMachine structure.  No more wierd pointers that have to
   be cast around and taken care of by the target.
2. Instruction Scheduling now takes the schedinfo as an argument.  The same
   should be done with the instinfo, it just isn't now.

llvm-svn: 565
2001-09-14 04:32:55 +00:00
Chris Lattner
65f74b8d84 Use predicate for Value type test
llvm-svn: 540
2001-09-10 20:09:28 +00:00
Chris Lattner
b095aaa8f4 I really don't like it when people break the build.
llvm-svn: 510
2001-09-09 19:41:52 +00:00
Chris Lattner
beefdaad8b Remove unneeded #includes
llvm-svn: 489
2001-09-07 21:22:28 +00:00
Chris Lattner
fd10317614 Remove unnecesary #include add dump calls pulled out of .h file
llvm-svn: 488
2001-09-07 21:21:03 +00:00
Chris Lattner
c1ca76ff89 * Remove lots of #includes
llvm-svn: 487
2001-09-07 21:19:42 +00:00
Vikram S. Adve
9fd1f9c1c2 Makefile for InstrSched/
llvm-svn: 403
2001-08-28 23:17:22 +00:00
Vikram S. Adve
ad002e37d5 Implementation of instruction scheduling for LLVM.
Currently schedules one basic block at a time.

llvm-svn: 396
2001-08-28 23:07:19 +00:00
Vikram S. Adve
91d73a52d5 Class that encapsulates priority heuristics for instruction scheduling.
llvm-svn: 395
2001-08-28 23:06:49 +00:00
Vikram S. Adve
23be1e0839 Scheduling DAG for instruction scheduling. Currently for a single basic block.
llvm-svn: 394
2001-08-28 23:06:02 +00:00