Same as CL 418475, but for Unified IR.
Updates #53888Fixes#54337
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So we don't have to duplicate the logic to detect noopt builder in
multiple places.
Based on khr@'s suggestion in CL 422037.
Change-Id: Idb338e8bc08cdf00460574bfc0d2f7018c79bbd5
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They exist on all other Unix ports, define them on GOOS=solaris as well.
Fixes#52875
Change-Id: I7285156b3b48ce12fbcc6d1d88865540a5c51a21
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Currently the linux/arm64 and linux/riscv64 ports wrap the fstatat
syscall twice, once in func fstatat and once in func Fstatat. Change the
latter to be a simple wrapper around the former to deduplicate some
code.
Change-Id: I82ec9374e2bcfe116eabf01f021eed1ee810ec15
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As it can't appear in user package paths.
There is a hack for handling "go:buildid" and "type:*" on windows/386.
Previously, windows/386 requires underscore prefix on external symbols,
but that's only applied for SHOSTOBJ/SUNDEFEXT or cgo export symbols.
"go.buildid" is STEXT, "type.*" is STYPE, thus they are not prefixed
with underscore.
In external linking mode, the external linker can't resolve them as
external symbols. But we are lucky that they have "." in their name,
so the external linker see them as Forwarder RVA exports. See:
- https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#export-address-table
- https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=ld/pe-dll.c;h=e7b82ba6ffadf74dc1b9ee71dc13d48336941e51;hb=HEAD#l972)
This CL changes "." to ":" in symbols name, so theses symbols can not be
found by external linker anymore. So a hacky way is adding the
underscore prefix for these 2 symbols. I don't have enough knowledge to
verify whether adding the underscore for all STEXT/STYPE symbols are
fine, even if it could be, that would be done in future CL.
Fixes#37762
Change-Id: I92eaaf24c0820926a36e0530fdb07b07af1fcc35
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In CL 339309 these were probably copied from the respective
godoc comments in package inet.af/netaddr, also see
https://pkg.go.dev/inet.af/netaddr#IPPort.IsValid and
https://pkg.go.dev/inet.af/netaddr#IPPrefix.IsValid
In net/netip the methods are named Addr. Adjust the godoc comments
accordingly.
Change-Id: Icfe1d73b647c2e195d96cd5b1073a734905134af
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The new M1 cpu (Apple) comes with sha512 hardware
acceleration feature.
Change-Id: I823d1e9b09b472bd21571eee75cc5314cd66b1ff
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Some compilers default to having -fstack-protector on, which breaks
when using internal linking because the linker doesn't know how to
find the support functions.
Fixes#52919Fixes#54313
Change-Id: I6f51d5e906503f61fc768ad8e30c163bad135087
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Doing the test at link time lets us distribute one Linux toolchain
that works on both glibc-based and musl-based Linux systems.
The old way built a toolchain that only ran on one or the other.
Fixes#54197.
Change-Id: Iaae8c274c78e1091eee828a720b49646be9bfffe
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Arrange for tests that call setMimeInit to fully restore the old values,
by clearing the sync.Once that controls initialization.
Once we've done that, call initMime in initMimeUnixTest because
otherwise the test types loaded there will be cleared by the call to
initMime that previously was not being done.
For golang/go#51648
Change-Id: I8bf92b305fc4499337db06113817c9decdc5aedb
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Split should only split strings and not perform mangling
of invalid UTF-8 into ut8.RuneError.
The prior behavior is clearly a bug since mangling is not
performed in all other situations (e.g., separator is non-empty).
Fixes#53511
Change-Id: I112a2ef15ee46ddecda015ee14bca04cd76adfbf
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...to avoid conflicts with the predeclared close function.
Change-Id: If6a19a004c390f4e0795ec207c72caa79a7281f4
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Since when that test requires inlining, which is disabled on noopt
builder.
Updates #29951
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Currently there is a an ANDconst and an ANDCCconst op in PPC64,
which is confusing since they map onto the same instruction.
One of these ops sets the result of the AND operation, and the
other sets the flag (condition register).
This converts ANDCCconst into an op with the 2 expected results:
the integer result of the AND and the flag setting. The ANDconst
op has been removed.
Note that in the PPC64 ISA the only variation of the 'and immediate'
is the one that sets the condition bit, which probably led to the
original (confusing) implementation.
This also adds a few rules to improve the use of ANDCCconst with
ISELB and some testcases to verify those improvements.
Change-Id: I523703fa4da2098eb995dc3ba744d36fa28e41d4
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64-bit PE is set by the optional header magic number,
not by the machine field.
Fixes#54250
Change-Id: I4d01bc08553780d5470e63f0b17bbd968323e5d1
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Duff's device was disabled on darwin/arm64 because the darwin
linker couldn't handle a branch relocation with non-zero addend.
This is no longer the case now. The darwin linker can handle it
just fine. So enable it.
Fixes#54189.
Change-Id: Ida7ebafe6eb01db1af5bb8ae60a62491da5eabdf
Reviewed-on: https://go-review.googlesource.com/c/go/+/420894
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When types2 type checks a method expression or method value that
selects a type parameter method, the Selection.Index is indexed based
on the method's index within the type parameter's constraint
interface.
However, with a fully-stenciled implementation, naively using the
index would result in picking a method from the corresponding type
argument's full method set, which could select a different method.
Unified IR currently avoids this because it selects methods based on
name, not index; but experimenting with index-based selection revealed
that there are no test cases that would have caught this failure case.
Change-Id: Idbc39e1ee741714203d4749e47f5bc015af25020
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Mark the assembly routines as not escaping their arguments.
Add a special case to NewInt that, when inlined, can do all
of its allocations (a big.Int and a [1]Word) on the stack.
Update #29951
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We don't need a multiply when the element type is size 0 or 1.
The panic functions don't return, so we don't need any post-call
code (register restores, etc.).
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Calling TypeOf to initialize variables forces any import of "reflect"
to link in the declared types of "reflect" even if they are unused.
TypeOf operates on Type and which will pull in
all transitive dependencies of Type, which includes Value as well.
Avoid this problem by declaring a rtypeOf function that
directly extracts the *rtype from an interface value
without going through Type as an intermediate type.
For a program that blank imports "reflect",
this reduces the binary size by ~34 KiB.
Updates #54097
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Base on gri@'s suggestion in CL 308971. "Rnd" is a bit random.
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These are available since Go 1.7. The version used for bootstrap is Go
1.17 for Go 1.20.
For #44505
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There's no need for a and b to match types. The typechecker already
ensured that a and b are both slices with the same base type, or
a and b are (possibly named) []byte and string.
The optimization to treat append(b, make([], ...)) as a zeroing
slice extension doesn't fire when there's a OCONVNOP wrapping the make.
Fixes#53888
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Read the bitmaps one uintptr at a time instead of one byte at a time.
Performance so far:
Allocation heavy, no retention: ~30% faster in heapBitsSetType
Scan heavy, ~no allocation: ~even in scanobject
Change-Id: I40d492b50d7f89d1b4261c2de58f6d255fa5e93e
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Use just 1 bit per word to record the ptr/nonptr bitmap.
Use word-sized operations to manipulate the bitmap, so we can operate
on up to 64 ptr/nonptr bits at a time.
Use a separate bitmap, one bit per word of the ptr/nonptr bitmap,
to encode a no-more-pointers signal. Since we can check 64 ptr/nonptr
bits at once, knowing the exact last pointer location is not necessary.
This cleans up the bitmap implementation significantly, which will
hopefully make it faster. TODO: measure
As a followon CL, we should make the gcdata bitmap an array of
uintptr instead of an array of byte, so we can load 64 bits of it at once.
Similarly for the processing of gc programs.
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Since when any user errors about out-of-bounds constants should have
been already reported by types2.
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This reverts commit 964f0c7a30.
Reason: cause increasing timeout in crypto/tls tests on race builders.
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Use the newly added atomic.Pointer[T] type for atomically
loading and storing type *T pointers. This has the advantage of
avoiding runtime type assertions required by its predecessor,
atomic.Value.
To fix build failures uncovered by TryBots (caused by "panic:
unaligned 64-bit atomic operation"), also change conn.curState to
type atomic.Uint64 so that it is 64-bit aligned.
Change-Id: I6024d12cd581adfdccc01be7eb0faa7482036614
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OpenBSD 7.1 onwards expose the aarch64 ISAR0 and ISAR1 registers via sysctl:
$ sysctl machdep
machdep.compatible=apple,j274
machdep.id_aa64isar0=153421459058925856
machdep.id_aa64isar1=1172796674562
Implement CPU feature detection for openbsd/arm64 based on this information.
Fixes#31746
Change-Id: If8a9b2b8fc557e1aaefbcb52f4d1bd9efc43856d
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Implement proposal #45454, providing build tags based on the
sub-architecture information in the GO$GOARCH variable
(for example, GOARM for GOARCH=arm).
For example, when GOAMD64=v2, the additional build tags
amd64.v1 and amd64.v2 are defined to be true.
Fixes#45454.
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Assumingly this appears to have been a bug in c2go, as this appeared in
https://go.dev/cl/172260043.
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In gcController.startCycle we just compute the initial value in a
local variable before assigning to the atomic field to avoid noisy
churn.
For #53821.
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Same as CL 417555, but for cmd/compile.
Fixes#54220
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Atomic operations are used even during STW for consistency.
For #53821.
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