mirror of https://github.com/golang/go.git
fd43831f44
Currently we rely on the type-checker to do some basic data-flow analysis to help decide whether function literals should capture variables by value or reference. However, this analysis isn't done by go/types, and escape analysis already has a better framework for doing this more precisely. This CL extends escape analysis to recalculate the same "byval" as CaptureVars and check that it matches. A future CL will remove CaptureVars in favor of escape analysis's calculation. Notably, escape analysis happens after deadcode removes obviously unreachable code, so it sees the AST without any unreachable assignments. (Also without unreachable addrtakens, but ComputeAddrtaken already happens after deadcode too.) There are two test cases where a variable is only reassigned on certain CPUs. This CL changes them to reassign the variables unconditionally (as no-op reassignments that avoid triggering cmd/vet's self-assignment check), at least until we remove CaptureVars. Passes toolstash -cmp. Change-Id: I7162619739fedaf861b478fb8d506f96a6ac21f3 Reviewed-on: https://go-review.googlesource.com/c/go/+/281535 Trust: Matthew Dempsky <mdempsky@google.com> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> |
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| bench | ||
| chan | ||
| closure3.dir | ||
| codegen | ||
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| syntax | ||
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| 64bit.go | ||
| 235.go | ||
| README.md | ||
| alg.go | ||
| alias.go | ||
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| escape_field.go | ||
| escape_goto.go | ||
| escape_hash_maphash.go | ||
| escape_iface.go | ||
| escape_indir.go | ||
| escape_level.go | ||
| escape_map.go | ||
| escape_param.go | ||
| escape_runtime_atomic.go | ||
| escape_selfassign.go | ||
| escape_slice.go | ||
| escape_struct_param1.go | ||
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| escape_struct_return.go | ||
| escape_sync_atomic.go | ||
| escape_unsafe.go | ||
| fibo.go | ||
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| float_lit.go | ||
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| floatcmp.go | ||
| for.go | ||
| func.go | ||
| func1.go | ||
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| gc.go | ||
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| goto.go | ||
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| inline_variadic.go | ||
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| iota.go | ||
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| nil.go | ||
| nilcheck.go | ||
| nilptr.go | ||
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| simassign.go | ||
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| sizeof.go | ||
| slice3.go | ||
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| slicecap.go | ||
| sliceopt.go | ||
| solitaire.go | ||
| stack.go | ||
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| strcopy.go | ||
| strength.go | ||
| string_lit.go | ||
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| struct0.go | ||
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| tinyfin.go | ||
| torture.go | ||
| turing.go | ||
| typecheck.go | ||
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| typeswitch.go | ||
| typeswitch1.go | ||
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| typeswitch2b.go | ||
| typeswitch3.go | ||
| uintptrescapes.go | ||
| uintptrescapes2.go | ||
| uintptrescapes3.go | ||
| undef.go | ||
| used.go | ||
| utf.go | ||
| varerr.go | ||
| varinit.go | ||
| winbatch.go | ||
| writebarrier.go | ||
| zerodivide.go | ||
README.md
The test directory contains tests of the Go tool chain and runtime. It includes black box tests, regression tests, and error output tests. They are run as part of all.bash.
To run just these tests, execute:
../bin/go run run.go
To run just tests from specified files in this directory, execute:
../bin/go run run.go -- file1.go file2.go ...
Standard library tests should be written as regular Go tests in the appropriate package.
The tool chain and runtime also have regular Go tests in their packages. The main reasons to add a new test to this directory are:
- it is most naturally expressed using the test runner; or
- it is also applicable to
gccgoand other Go tool chains.