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00f7d1f5f8
v8/test/cctest/compiler
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bmeurer 00f7d1f5f8 [intrinsics] Kill the %_IsMinusZero intrinsic. 
By now only the default %TypedArray%.prototype.sort compare function
and the JS implementation of SameValueZero were still using the odd
%_IsMinusZero intrinsic, whose semantics both included a number check
(actually HeapNumber test) plus testing if the heap number stores the
special -0 value. In both cases we already know that we deal with
number so we can reduce it to a simple number test for -0, which can
be expressed via dividing 1 by that value and checking the sign of
the result. In case of the compare function, we can be even smarter
and work with the reciprocal values in case x and y are equal to 0
(although long term we should probably rewrite the fast case for
the typed array sorting function in C++ anyway, which will be way,
way faster than our handwritten callback-style, type-feedback
polluted JS implementation).

R=yangguo@chromium.org

Review URL: https://codereview.chromium.org/1680783002

Cr-Commit-Position: refs/heads/master@{#33833}
2016-02-09 06:28:53 +00:00
..
c-signature.h [turbofan] Make MachineType a pair of enums. 2015-12-10 09:03:53 +00:00
call-tester.h Implement the BufferedRawMachineAssemblerTester. 2015-10-30 21:32:49 +00:00
codegen-tester.cc [turbofan] Store nodes use only MachineRepresentation, not MachineType. 2015-12-11 15:34:16 +00:00
codegen-tester.h [wasm] Provide backoff implementations for the Fxx rounding instructions 2016-02-02 12:26:58 +00:00
function-tester.h Revert of Type Feedback Vector lives in the closure (patchset #2 id:40001 of https://codereview.chromium.org/1668103002/ ) 2016-02-05 10:48:35 +00:00
graph-builder-tester.h [turbofan] Make MachineType a pair of enums. 2015-12-10 09:03:53 +00:00
test-basic-block-profiler.cc [turbofan] Make MachineType a pair of enums. 2015-12-10 09:03:53 +00:00
test-branch-combine.cc [turbofan] Make MachineType a pair of enums. 2015-12-10 09:03:53 +00:00
test-changes-lowering.cc [turbofan] Store nodes use only MachineRepresentation, not MachineType. 2015-12-11 15:34:16 +00:00
test-code-stub-assembler.cc [compiler] Extend the functionality of CodeStubAssembler 2016-02-02 09:42:54 +00:00
test-gap-resolver.cc [turbofan] Make MachineType a pair of enums. 2015-12-10 09:03:53 +00:00
test-graph-visualizer.cc [tubofan] Remove .dot output of --trace-turbo 2015-12-11 16:58:31 +00:00
test-instruction.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-js-constant-cache.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-js-context-specialization.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-js-typed-lowering.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-jump-threading.cc Preparing the terrain for frame elision. This change is necessary to 2016-01-28 16:15:12 +00:00
test-linkage.cc [compiler] Remove CodeStub from CompilationInfo 2016-01-20 15:18:14 +00:00
test-loop-analysis.cc [turbofan] Make MachineType a pair of enums. 2015-12-10 09:03:53 +00:00
test-loop-assignment-analysis.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-machine-operator-reducer.cc [turbofan] Store nodes use only MachineRepresentation, not MachineType. 2015-12-11 15:34:16 +00:00
test-multiple-return.cc [turbofan] Make MachineType a pair of enums. 2015-12-10 09:03:53 +00:00
test-node.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-operator.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-osr.cc [turbofan] Make MachineType a pair of enums. 2015-12-10 09:03:53 +00:00
test-pipeline.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-representation-change.cc [turbofan] Replace MachineSemantic with Type in simplified lowering. 2016-01-12 05:55:08 +00:00
test-run-bytecode-graph-builder.cc [Interpreter] Adds support for const/let variables to interpreter. 2016-02-08 14:14:57 +00:00
test-run-deopt.cc [turbofan] Deprecate --turbo-try-finally flag. 2016-02-05 15:20:44 +00:00
test-run-inlining.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-run-intrinsics.cc [intrinsics] Kill the %_IsMinusZero intrinsic. 2016-02-09 06:28:53 +00:00
test-run-jsbranches.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-run-jscalls.cc Revert of Type Feedback Vector lives in the closure (patchset #2 id:40001 of https://codereview.chromium.org/1668103002/ ) 2016-02-05 10:48:35 +00:00
test-run-jsexceptions.cc [turbofan] Deprecate --turbo-try-finally flag. 2016-02-05 15:20:44 +00:00
test-run-jsobjects.cc Basic TurboFan support for rest arguments. 2015-12-31 11:56:39 +00:00
test-run-jsops.cc Ship ES2015 sloppy-mode const semantics 2016-01-11 23:09:59 +00:00
test-run-machops.cc [turbofan] Add TruncateFloat32ToUint32 operator to Turbofan. 2016-02-06 18:09:35 +00:00
test-run-native-calls.cc X87: Change num_double_registers() to num_allocatable_double_registers() for TestStackSlot. 2016-02-01 10:54:33 +00:00
test-run-properties.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-run-stackcheck.cc Disable soon to be deprecated APIs per default for v8 2015-12-09 10:35:04 +00:00
test-run-stubs.cc [compiler] Remove CodeStub from CompilationInfo 2016-01-20 15:18:14 +00:00
test-run-variables.cc Ship ES2015 sloppy-mode const semantics 2016-01-11 23:09:59 +00:00
test-simplified-lowering.cc [turbofan] Avoid using the typer's types in representation inference for phis. 2016-01-13 15:35:36 +00:00
value-helper.h Revert of [turbofan] Implement rounding of floats on x64 and ia32 without sse4.1. (patchset #2 id:20001 of https://codereview.chromium.org/1584663007/ ) 2016-01-18 16:28:00 +00:00