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15 Commits

Author SHA1 Message Date
kmillikin@google.com ef0580c26a Implement a branch optimization pass. 
Branch optimization pushes some branches that test the value of a phi
to the predecessor blocks.  This can avoid materializing a boolean
object solely for the purposes of branching on its boolean value.

The optimization is performed after inlinining which creates
opportunities, and before constant propagation, because it exposes
opportunities for unreachable code elimination.

R=vegorov@google.com
BUG=

Review URL: https://codereview.chromium.org//12540002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@19682 260f80e4-7a28-3924-810f-c04153c831b5
 2013-03-08 11:14:08 +00:00
vegorov@google.com 51c4652bca null value can be the receiver of methods on Object (e.g. hashCode). 
Fix wrong assumption in the type propagator that marked the receiver as never nullable.

R=srdjan@google.com
BUG=dart:8739

Review URL: https://codereview.chromium.org//12330113

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@18991 260f80e4-7a28-3924-810f-c04153c831b5
 2013-02-25 18:48:49 +00:00
fschneider@google.com 5113b2411a Remove support for generating visualizer format file for the flowgraph. 
Review URL: https://codereview.chromium.org//11099061

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@13536 260f80e4-7a28-3924-810f-c04153c831b5
 2012-10-11 12:25:55 +00:00
srdjan@google.com bc1adc3123 Restoring assert that deopt_id() should be accessed only if the instruction can deoptimize. Print resulting ssa_temp_indexes if available. Add an IL printing helper. 
Review URL: https://chromiumcodereview.appspot.com//10912120

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@11941 260f80e4-7a28-3924-810f-c04153c831b5
 2012-09-06 12:18:23 +00:00
cshapiro@google.com da14bf70a7 Add attributions so printf like functions can have their arguments checked. 
This change also corrects some misuses of format strings and format
arguments that discovered by the compiler checks.

Review URL: https://chromiumcodereview.appspot.com//10869063

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@11912 260f80e4-7a28-3924-810f-c04153c831b5
 2012-09-06 00:58:25 +00:00
kmillikin@google.com 0750c472dc Reapply "Remove classes Computation and BindInstr." 
Reapply svn revision 11868 with a bugfix.

Original code review at http://codereview.chromium.org/10908091/

R=fschneider@google.com
BUG=

Review URL: https://chromiumcodereview.appspot.com//10912094

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@11890 260f80e4-7a28-3924-810f-c04153c831b5
 2012-09-05 17:04:49 +00:00
kmillikin@google.com 7e36720fa8 Revert "Remove classes Computation and BindInstr." 
This reverts svn revision 11868.

TBR=fschneider@google.com
BUG=

Review URL: https://chromiumcodereview.appspot.com//10917085

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@11869 260f80e4-7a28-3924-810f-c04153c831b5
 2012-09-05 11:20:14 +00:00
kmillikin@google.com bd84c7ee22 Remove classes Computation and BindInstr. 
The former Computation classes are folded into the Instruction class
hierarchy.

R=fschneider@google.com
BUG=

Review URL: https://chromiumcodereview.appspot.com//10908091

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@11868 260f80e4-7a28-3924-810f-c04153c831b5
 2012-09-05 11:15:34 +00:00
zerny@google.com 5cc78d2a33 Refactored FlowGraphBuilder into a separate FlowGraph representation. 
R=kmillikin@google.com
BUG=

Review URL: https://chromiumcodereview.appspot.com//10857016

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@10807 260f80e4-7a28-3924-810f-c04153c831b5
 2012-08-16 12:06:17 +00:00
regis@google.com ba83d02f9e Add type propagation phase in optimizing compiler (work in progress). 
Remove unused cid field from Instruction node and add it to nodes subclassing
Instruction that need it: BranchInstr, ReturnInstr, ThrowInstr, ReThrowInstr.
Remove unused icdata field from Instruction node and add it to BranchInstr.
Review URL: https://chromiumcodereview.appspot.com//10830109

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@10125 260f80e4-7a28-3924-810f-c04153c831b5
 2012-08-01 17:15:55 +00:00
vegorov@google.com 1bd5a9b414 Skeleton of a linear scan register allocator. 
BUG=
TEST=

Review URL: https://chromiumcodereview.appspot.com//10696151

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@9563 260f80e4-7a28-3924-810f-c04153c831b5
 2012-07-11 18:52:17 +00:00
fschneider@google.com 84027c4457 Add flow graph printing into a .cfg file with flag --print-flow-graph-file. 
This CL adds a flag --print-flow-graph-file which produces one
.cfg-file per isolate when enabled. Currently it prints the final
flow graph before code generation.

I also added SuccessorAt and SuccessorCount to allow easy iteration
over the successors of a basic block.
Review URL: https://chromiumcodereview.appspot.com//10446116

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@8322 260f80e4-7a28-3924-810f-c04153c831b5
 2012-06-06 11:09:02 +00:00
srdjan@google.com eeda4b5810 First step toward an optimizing compiler: 
- Fix ic-data instrumentation
- Optimize '+' for Smi-s only, by replacing the instance call with inlined operations.
- Add deoptimization stub
- Add deoptimzation support.
Review URL: https://chromiumcodereview.appspot.com//10431006

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@7952 260f80e4-7a28-3924-810f-c04153c831b5
 2012-05-24 16:50:57 +00:00
fschneider@google.com 055ba590a4 Add IR printing into a supplied buffer and formatted comments on x64. 
This change refactors printing function for instructions
so that they can be used for different purposes like
printing to stdout (what FlowGraphPrinter currently does),
creating code comments for the disassembler, or in the future
dumping the IR into a file.

I added an abstract interface to iterate over the inputs
 of an computation: InputCount and InputAt. This is only
 an intermediate step likely to change in the future. For
 that I had to bring back the [] operator for zero-operand
 instructions.
Review URL: https://chromiumcodereview.appspot.com//10407031

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@7731 260f80e4-7a28-3924-810f-c04153c831b5
 2012-05-18 01:04:56 +00:00
fschneider@google.com 3c9755e56f Move FlowGraphPrinter to a new file. 
This change is just moving code around.
Review URL: https://chromiumcodereview.appspot.com//10398015

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@7627 260f80e4-7a28-3924-810f-c04153c831b5
 2012-05-14 20:32:30 +00:00