diff options
author | 2012-12-14 13:35:28 -0800 | |
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committer | 2013-02-06 12:16:33 -0800 | |
commit | 4ef3e45d7c6ec3c482a1a48f4df470811aa3cf0a (patch) | |
tree | 5d91ff23708048a2b453a5917dab82be1b545f91 /src/compiler/codegen/codegen_util.h | |
parent | f84f99fe3a944310fdfb6f17836079ac5c48c799 (diff) |
Compiler constant handling rework
In preparation for de-optimization, reworked the constant
handling mechanism. Also took advantage of knowledge of
constant operands (particularly for long operations).
Significant performance improvements for Mandelbrot
(~60 seconds to ~34 seconds). Minor improvements in other
benchmarks.
The new constant handling breaks two of the existing
optimization passes: "Skip Large Method" and "Load/Store
Elimization."
I don't intend to update the large method optimization
because it will be superceeded by the upcoming interpreter/
fingerprinting mechanism. Leaving the code in place for
now in order to compare compile-time improvements with
fingerprinting/interpret. All related code will be deleted
when that is complete.
The load/store elimination pass needs some rework to handle
uses of multiple-register loads and stores. It will be
updated & restored in a future CL.
Change-Id: Ia979abaf51b8ae81bbb0428031cbcea854625fac
Diffstat (limited to 'src/compiler/codegen/codegen_util.h')
-rw-r--r-- | src/compiler/codegen/codegen_util.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/compiler/codegen/codegen_util.h b/src/compiler/codegen/codegen_util.h index 4f146560b2..9b9bece585 100644 --- a/src/compiler/codegen/codegen_util.h +++ b/src/compiler/codegen/codegen_util.h @@ -20,6 +20,7 @@ #include <stdint.h> #include "compiler/compiler_enums.h" +#include "compiler/compiler_ir.h" namespace art { @@ -59,6 +60,8 @@ void DumpPackedSwitchTable(const uint16_t* table); LIR* MarkBoundary(CompilationUnit* cu, int offset, const char* inst_str); void NopLIR(LIR* lir); bool EvaluateBranch(Instruction::Code opcode, int src1, int src2); +bool IsInexpensiveConstant(CompilationUnit* cu, RegLocation rl_src); +ConditionCode FlipComparisonOrder(ConditionCode before); } // namespace art |