| dce4a407a24b04eebc6a376f8e62b41aaa7b071f |
|
29-May-2014 |
Stephen Hines <srhines@google.com> |
Update LLVM for 3.5 rebase (r209712).
Change-Id: I149556c940fb7dc92d075273c87ff584f400941f
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 36b56886974eae4f9c5ebc96befd3e7bfe5de338 |
|
24-Apr-2014 |
Stephen Hines <srhines@google.com> |
Update to LLVM 3.5a.
Change-Id: Ifadecab779f128e62e430c2b4f6ddd84953ed617
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| b86a0cdb674549d8493043331cecd9cbf53b80da |
|
15-Jun-2013 |
Andrew Trick <atrick@apple.com> |
Machine Model: Add MicroOpBufferSize and resource BufferSize.
Replace the ill-defined MinLatency and ILPWindow properties with
with straightforward buffer sizes:
MCSchedMode::MicroOpBufferSize
MCProcResourceDesc::BufferSize
These can be used to more precisely model instruction execution if desired.
Disabled some misched tests temporarily. They'll be reenabled in a few commits.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184032 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 3aa5394e5bbf267824e9d789ec8b1c27b85a8671 |
|
27-Apr-2013 |
Andrew Trick <atrick@apple.com> |
Generalize the MachineTraceMetrics public API.
Naturally, we should be able to pass in extra instructions, not just
extra blocks.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180667 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
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| 2ccdbc6675fd5bafb6da65dfca850b6e2587f9f3 |
|
03-Apr-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Allow MachineTraceMetrics to be used when the model has no resources.
It it still possible to extract information from itineraries, for
example.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178582 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
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| 8396e130427999c57422e52af3913eb8182847e5 |
|
02-Apr-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Count processor resources individually in MachineTraceMetrics.
The new instruction scheduling models provide information about the
number of cycles consumed on each processor resource. This makes it
possible to estimate ILP more accurately than simply counting
instructions / issue width.
The functions getResourceDepth() and getResourceLength() now identify
the limiting processor resource, and return a cycle count based on that.
This gives more precise resource information, particularly in traces
that use one resource a lot more than others.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178553 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 6ffcd5efe15156e2a71bd1a33f5f8e27de894ea3 |
|
08-Mar-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Rename isEarlierInSameTrace to isUsefulDominator.
In very rare cases caused by irreducible control flow, the dominating
block can have the same trace head without actually being part of the
trace.
As long as such a dominator still has valid instruction depths, it is OK
to use it for computing instruction depths.
Rename the function to avoid lying, and add a check that instruction
depths are computed for the dominator.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176668 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
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| 5ed625c3cff2511469e9b3c5131c29fd89ddd482 |
|
17-Jan-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Move MachineTraceMetrics.h into include/llvm/CodeGen.
Let targets use it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@172688 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| d04a8d4b33ff316ca4cf961e06c9e312eff8e64f |
|
03-Dec-2012 |
Chandler Carruth <chandlerc@gmail.com> |
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. =]
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| ebba49395c189364c9ef77fb4c432856330ceca1 |
|
11-Oct-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Pass an explicit operand number to addLiveIns.
Not all instructions define a virtual register in their first operand.
Specifically, INLINEASM has a different format.
<rdar://problem/12472811>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165721 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 6be75ae196e0138048f685d4df7128d24245be5e |
|
09-Oct-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Don't crash on extra evil irreducible control flow.
When the CFG contains a loop with multiple entry blocks, the traces
computed by MachineTraceMetrics don't always have the same nice
properties. Loop back-edges are normally excluded from traces, but
MachineLoopInfo doesn't recognize loops with multiple entry blocks, so
those back-edges may be included.
Avoid asserting when that happens by adding an isEarlierInSameTrace()
function that accurately determines if a dominating block is part of the
same trace AND is above the currrent block in the trace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165434 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| f43fe1d163b34e1de5d045773728c571b59d1cdd |
|
04-Oct-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Switch MachineTraceMetrics to the new TargetSchedModel interface.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165235 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| a35bf506f41f4231dc649f3af5255e0b1087b2e3 |
|
11-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Give MachineTraceMetrics its own debug tag.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161712 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 5413b68b1f59041a821287790dbc1ee2e272cf4e |
|
11-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add more trace query functions.
Trace::getResourceLength() computes the number of cycles required to
execute the trace when ignoring data dependencies. The number can be
compared to the critical path to estimate the trace ILP.
Trace::getPHIDepth() computes the data dependency depth of a PHI in a
trace successor that isn't necessarily part of the trace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161711 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 8828c4ccd44cb49d13360cf86fd0b963f211f03f |
|
10-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Include loop-carried dependencies when computing instr heights.
When a trace ends with a back-edge, include PHIs in the loop header in
the height computations. This makes the critical path through a loop
more accurate by including the latencies of the last instructions in the
loop.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161688 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| e723007ee6911c77bedaa2e914961e86b0b4ce61 |
|
09-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Deal with irreducible control flow when building traces.
We filter out MachineLoop back-edges during the trace-building PO
traversals, but it is possible to have CFG cycles that aren't natural
loops, and MachineLoopInfo doesn't include such cycles.
Use a standard visited set to detect such CFG cycles, and completely
ignore them when picking traces.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161532 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 7a8f311ece7108e44ded601237091c23ef7782eb |
|
07-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Fix a couple of typos.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161437 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 84ef6ba44394f983d985b02e328cbb2dd779e4b0 |
|
07-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add trace accessor methods, implement primitive if-conversion heuristic.
Compare the critical paths of the two traces through an if-conversion
candidate. If the difference is larger than the branch brediction
penalty, reject the if-conversion. If would never pay.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161433 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 79a20ce6f0d6c1041a5031aca41b50a1e58b1d4b |
|
02-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Compute the critical path length through a trace.
Whenever both instruction depths and instruction heights are known in a
block, it is possible to compute the length of the critical path as
max(depth+height) over the instructions in the block.
The stored live-in lists make it possible to accurately compute the
length of a critical path that bypasses the current (small) block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161197 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| c7f44b8b8fca87cdd28ffe420c3b87141d88c099 |
|
02-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Compute instruction heights through a trace.
The height on an instruction is the minimum number of cycles from the
instruction is issued to the end of the trace. Heights are computed for
all instructions in and below the trace center block.
The method for computing heights is different from the depth
computation. As we visit instructions in the trace bottom-up, heights of
used instructions are pushed upwards. This way, we avoid scanning long
use lists, looking for uses in the current trace.
At each basic block boundary, a list of live-in registers and their
minimum heights is saved in the trace block info. These live-in lists
are used when restarting depth computations on a trace that
converges with an already computed trace. They will also be used to
accurately compute the critical path length.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161138 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 9dae457e2b9a9919c3f7d48b229035d2b956a2d4 |
|
01-Aug-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add DataDep constructors. Explicitly check SSA form.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161115 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 5f8e8bd656bb174b3e22c0e56ce3d1eb958ac2e2 |
|
31-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Compute instruction depths through the current trace.
Assuming infinite issue width, compute the earliest each instruction in
the trace can issue, when considering the latency of data dependencies.
The issue cycle is record as a 'depth' from the beginning of the trace.
This is half the computation required to find the length of the critical
path through the trace. Heights are next.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161074 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 64e2973bf78970aedecbb5fda44e19f93f56dd9b |
|
31-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Rename CT -> MTM. MachineTraceMetrics is abbreviated MTM.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161072 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 2f6b62b09f07d63b7f3ee2de50735dd8c83c0f0f |
|
31-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Avoid looking at stale data in verifyAnalysis().
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161004 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 1c899cf47c13a107cf0f85ae69fcd36c92b37f14 |
|
31-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Allow traces to enter nested loops.
This lets traces include the final iteration of a nested loop above the
center block, and the first iteration of a nested loop below the center
block.
We still don't allow traces to contain backedges, and traces are
truncated where they would leave a loop, as seen from the center block.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@161003 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 8e54ab5c7618bf3813c337ad181a741f30eb36cc |
|
30-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Assert that all trace candidate blocks have been visited by the PO.
When computing a trace, all the candidates for pred/succ must have been
visited. Filter out back-edges first, though. The PO traversal ignores
them.
Thanks to Andy for spotting this in review.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160995 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| ef6c76c984f821ea866902a7f9e695b16e971468 |
|
30-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Hook into PassManager's analysis verification.
By overriding Pass::verifyAnalysis(), the pass contents will be verified
by the pass manager.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160994 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 3f63a589788995a724bc4587d022fe15ea8576ba |
|
30-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add MachineInstr::isTransient().
This is a cleaned up version of the isFree() function in
MachineTraceMetrics.cpp.
Transient instructions are very unlikely to produce any code in the
final output. Either because they get eliminated by RegisterCoalescing,
or because they are pseudo-instructions like labels and debug values.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160977 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| a1b2bf79796d8c44b1321a69a7236b85c33ef7ca |
|
30-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add MachineTraceMetrics::verify().
This function verifies the consistency of cached data in the
MachineTraceMetrics analysis.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160976 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| ee31ae12e8a7b843e97285b321cb1f485cd77248 |
|
30-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Verify that the CFG hasn't changed during invalidate().
The MachineTraceMetrics analysis must be invalidated before modifying
the CFG. This will catch some of the violations of that rule.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160969 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 08f6ef6a7807250d84446661b7a6ec4afa762099 |
|
28-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add more debug output to MachineTraceMetrics.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160905 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 0271a5fa29f73150fad891ca4c43a0a89a64b3bf |
|
28-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Keep track of the head and tail of the trace through each block.
This makes it possible to quickly detect blocks that are outside the
trace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160904 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 0fc44869ffb5c180ec12f86f2fd02a35a1affb4a |
|
26-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Use an otherwise unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160798 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|
| 9f63e104271eb91e545fa8cdb16fb9e10a8a9578 |
|
26-Jul-2012 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Start scaffolding for a MachineTraceMetrics analysis pass.
This is still a work in progress.
Out-of-order CPUs usually execute instructions from multiple basic
blocks simultaneously, so it is necessary to look at longer traces when
estimating the performance effects of code transformations.
The MachineTraceMetrics analysis will pick a typical trace through a
given basic block and provide performance metrics for the trace. Metrics
will include:
- Instruction count through the trace.
- Issue count per functional unit.
- Critical path length, and per-instruction 'slack'.
These metrics can be used to determine the performance limiting factor
when executing the trace, and how it will be affected by a code
transformation.
Initially, this will be used by the early if-conversion pass.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160796 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/CodeGen/MachineTraceMetrics.cpp
|