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Rationale:
The change introduces actual conditional passes
(dependence on inliner). This ensures more
cases are optimized downstream without
needlessly introducing compile-time.
NOTE:
Some checker tests needed to be rewritten
due to subtle changes in the phase ordering.
No optimizations were harmed in the process,
though.
Bug: b/78171933, b/74026074
Test: test-art-host,target
Change-Id: I335260df780e14ba1f22499ad74d79060c7be44d
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Rationale:
The change adds a return value to Run() in preparation of
conditional pass execution. The value returned by Run() is
best effort, returning false means no optimizations were
applied or no useful information was obtained. I filled
in a few cases with more exact information, others
still just return true. In addition, it integrates inlining
as a regular pass, avoiding the ugly "break" into
optimizations1 and optimziations2.
Bug: b/78171933, b/74026074
Test: test-art-host,target
Change-Id: Ia39c5c83c01dcd79841e4b623917d61c754cf075
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Rationale:
Refactors the way we set up optimization passes
in the compiler into a more centralized approach.
The refactoring also found some "holes" in the
existing mechanism (missing string lookup in
the debugging mechanism, or inablity to set
alternative name for optimizations that may repeat).
Bug: 64538565
Test: test-art-host test-art-target
Change-Id: Ie5e0b70f67ac5acc706db91f64612dff0e561f83
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Remove all copies of 'MaybeRecordStat', replacing them with a single
OptimizingCompilerStats::MaybeRecordStat helper.
Change-Id: I83b96b41439dccece3eee2e159b18c95336ea933
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This change introduces new dex2oat switch --run-passes=. This switch
accepts path to a text file with names of passes to run.
Compiler will run optimization passes specified in the file rather
then the default ones.
There is no verification implemented on the compiler side. It is user's
responsibility to provide a list of passes that leads to successful
generation of correct code. Care should be taken to prepare a list
that satisfies all dependencies between optimizations.
We only take control of the optional optimizations. Codegen (builder),
and all passes required for register allocation will run unaffected
by this mechanism.
Change-Id: Ic3694e53515fefcc5ce6f28d9371776b5afcbb4f
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This adds the ability to track where we allocate memory
when the kArenaAllocatorCountAllocations flag is turned on.
Also move some allocations from native heap to the Arena
and remove some unnecessary utilities.
Bug: 23736311
Change-Id: I1aaef3fd405d1de444fe9e618b1ce7ecef07ade3
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Rationale:
Types (int, float etc.) and access type (field vs. array)
can be used to disambiguate write/read side-effects analysis.
This directly improves e.g. dead code elimination and licm.
Change-Id: I371f6909a3f42bda13190a03f04c4a867bde1d06
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This patch refactors the way GraphChecker is invoked, utilizing the
same scoping mechanism as pass timing and graph visualizer. Therefore,
GraphChecker will now run not just after instances of HOptimization
but after the builders and reg alloc, too.
Change-Id: I8173b98b79afa95e1fcbf3ac9630a873d7f6c1d4
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This should reduce the stack size needed by the
OptimizingCompiler::CompileOptimized() which was very
close to our limits for clang builds, causing repeated
build breakages on otherwise healthy changes:
art/compiler/optimizing/optimizing_compiler.cc:395:37:
error: stack frame size of 1760 bytes in function
'art::OptimizingCompiler::CompileOptimized'
[-Werror,-Wframe-larger-than=]
Change-Id: I2f4ab0235f4eac61823a4a320bb4fe78942a23c2
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Adds a new pass which finds all unreachable blocks, typically due to
simplifying an if-condition to a constant, and removes them from the
graph. The patch also slightly generalizes the graph-transforming
operations.
Change-Id: Iff7c97f1d10b52886f3cd7401689ebe1bfdbf456
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Until the global CFLAGS are fixed, add Wunused. Fix declarations
in the optimizing compiler.
Change-Id: Ic4553f08e809dc54f3d82af57ac592622c98e000
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- propagate reference types between instructions
- remove checked casts when possible
- add StackHandleScopeCollection to manage an arbitrary number of stack
handles (see comments)
Change-Id: I31200067c5e7375a5ea8e2f873c4374ebdb5ee60
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This patch refactors the way HGraph objects are created, moving the
instantiation out of the Builder class and creating the CodeGenerator
earlier. The patch uses this to build a single interface for printing
timings info and dumping the CFG.
Change-Id: I2eb63eabf28e2d0f5cdc7affaa690c3a4b1bdd21
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Change-Id: I9c8afb0a58ef45e568576015473cbfd5f011c242
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Change-Id: Icbab884d2dfd71656347368b424cb35cbf524051
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Move existing optimizations to it.
Change-Id: I3b43f9997faf4ed8875162e3a3abdf99375478dd
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This reverts commit 1ddbf6d4b37979a9f11a203c12befd5ae8b65df4.
Change-Id: I110a14668d1564ee0604dc958b91394b40da89fc
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This reverts commit bf9cd7ba2118a75f5aa9b56241c4d5fa00dedeb8.
Change-Id: I0a483446666c9c24c45925a5fc199debdefd8b3e
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- Add art::HOptimization.
- Rename art::ConstantPropagation to art::HConstantFolding in
compiler/optimizing/constant_folding.h to avoid name
clashes with a class of the same name in
compiler/dex/post_opt_passes.h.
- Rename art::DeadCodeElimination to
art::HDeadCodeElimination for consistency reasons.
- Have art::HDeadCodeElimination and art::HConstantFolding
derive from art::HOptimization.
- Start to use these optimizations in
art:OptimizingCompiler::TryCompile.
Change-Id: Iaab350c122d87b2333b3760312b15c0592d7e010
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