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| author | Artem Serov <artem.serov@linaro.org> | 2016-07-06 16:23:04 +0100 |
|---|---|---|
| committer | Vladimir Marko <vmarko@google.com> | 2016-07-21 09:16:43 +0000 |
| commit | 328429ff48d06e2cad4ebdd3568ab06de916a10a (patch) | |
| tree | 6290ac8afc3e93488382727f6765f548a2cfff04 /compiler/optimizing/optimizing_compiler.cc | |
| parent | 79e73245140f4115039a7284b3797d701f368fe6 (diff) | |
ARM: Port instr simplification of array accesses.
After changing the addressing mode for array accesses (in
https://android-review.googlesource.com/248406) the 'add'
instruction that calculates the base address for the array can be
shared across accesses to the same array.
Before https://android-review.googlesource.com/248406:
add IP, r[Array], r[Index0], LSL #2
ldr r0, [IP, #12]
add IP, r[Array], r[Index1], LSL #2
ldr r0, [IP, #12]
Before this CL:
add IP. r[Array], #12
ldr r0, [IP, r[Index0], LSL #2]
add IP. r[Array], #12
ldr r0, [IP, r[Index1], LSL #2]
After this CL:
add IP. r[Array], #12
ldr r0, [IP, r[Index0], LSL #2]
ldr r0, [IP, r[Index1], LSL #2]
Link to the original optimization:
https://android-review.googlesource.com/#/c/127310/
Test: Run ART test suite on Nexus 6.
Change-Id: Iee26f9a0a7ca46abb90e3f60d19d22dc8dee4d8f
Diffstat (limited to 'compiler/optimizing/optimizing_compiler.cc')
| -rw-r--r-- | compiler/optimizing/optimizing_compiler.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/compiler/optimizing/optimizing_compiler.cc b/compiler/optimizing/optimizing_compiler.cc index 80affc3d66..30a6d0f005 100644 --- a/compiler/optimizing/optimizing_compiler.cc +++ b/compiler/optimizing/optimizing_compiler.cc @@ -448,8 +448,12 @@ static void RunArchOptimizations(InstructionSet instruction_set, arm::DexCacheArrayFixups* fixups = new (arena) arm::DexCacheArrayFixups(graph, stats); arm::InstructionSimplifierArm* simplifier = new (arena) arm::InstructionSimplifierArm(graph, stats); + SideEffectsAnalysis* side_effects = new (arena) SideEffectsAnalysis(graph); + GVNOptimization* gvn = new (arena) GVNOptimization(graph, *side_effects, "GVN_after_arch"); HOptimization* arm_optimizations[] = { simplifier, + side_effects, + gvn, fixups }; RunOptimizations(arm_optimizations, arraysize(arm_optimizations), pass_observer); |