diff options
| author | 2016-07-06 16:23:04 +0100 | |
|---|---|---|
| committer | 2016-07-21 09:16:43 +0000 | |
| commit | 328429ff48d06e2cad4ebdd3568ab06de916a10a (patch) | |
| tree | 6290ac8afc3e93488382727f6765f548a2cfff04 /compiler/optimizing/instruction_simplifier_arm64.h | |
| 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/instruction_simplifier_arm64.h')
| -rw-r--r-- | compiler/optimizing/instruction_simplifier_arm64.h | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/compiler/optimizing/instruction_simplifier_arm64.h b/compiler/optimizing/instruction_simplifier_arm64.h index 4735f85ab0..28648b3bea 100644 --- a/compiler/optimizing/instruction_simplifier_arm64.h +++ b/compiler/optimizing/instruction_simplifier_arm64.h @@ -35,10 +35,6 @@ class InstructionSimplifierArm64Visitor : public HGraphVisitor { } } - void TryExtractArrayAccessAddress(HInstruction* access, - HInstruction* array, - HInstruction* index, - size_t data_offset); bool TryMergeIntoUsersShifterOperand(HInstruction* instruction); bool TryMergeIntoShifterOperand(HInstruction* use, HInstruction* bitfield_op, |