| Commit message (Collapse) | Author | Age | Files | Lines |
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Compiler changes:
* Change map assignment to use mapassign and assign value directly.
* Change string iteration to use decoderune, faster for ASCII strings.
* Change makeslice to take int, and use makeslice64 for larger values.
* Add new noverflow field to hmap struct used for maps.
Unresolved problems, to be fixed later:
* Commented out test in go/types/sizes_test.go that doesn't compile.
* Commented out reflect.TestStructOf test for padding after zero-sized field.
Reviewed-on: https://go-review.googlesource.com/35231
gotools/:
Updates for Go 1.8rc1.
* Makefile.am (go_cmd_go_files): Add bug.go.
(s-zdefaultcc): Write defaultPkgConfig.
* Makefile.in: Rebuild.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244456 138bc75d-0d04-0410-961f-82ee72b054a4
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I looked at a diff of proc.go between Go 1.7 and gccgo, and copied
over all the easy stuff.
Reviewed-on: https://go-review.googlesource.com/35090
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244291 138bc75d-0d04-0410-961f-82ee72b054a4
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Drop the size arguments for the hash/equal functions stored in type
descriptors. Types know what size they are. To make this work,
generate hash/equal functions for types that can use an identity
comparison but are not a standard size and alignment.
Drop the multiplications by 33 in the generated hash code and the
reflect package hash code. They are not necessary since we started
passing a seed value around, as the seed includes the hash of the
earlier values.
Copy the algorithms for standard types from the Go 1.7 runtime,
replacing the C functions.
Reviewed-on: https://go-review.googlesource.com/34983
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244256 138bc75d-0d04-0410-961f-82ee72b054a4
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This started by moving procresize from C to Go so that we can pass the
right type to the memory allocator when allocating a p, which forced
the gomaxprocs variable to move from C to Go, and everything else
followed from that.
Reviewed-on: https://go-review.googlesource.com/34916
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244236 138bc75d-0d04-0410-961f-82ee72b054a4
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Move allocg and handling of allgs slice from C to Go.
Reviewed-on: https://go-review.googlesource.com/34797
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244036 138bc75d-0d04-0410-961f-82ee72b054a4
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runtime: don't build aeshash.c if the assembler doesn't support it
This is for CentOS 5, whose assembler does not know the aesinc
instruction.
Fixes GCC PR 78789.
Patch by Uros Bizjak.
Reviewed-on: https://go-review.googlesource.com/34796
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@244031 138bc75d-0d04-0410-961f-82ee72b054a4
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Remove support for _cgo_allocate. It was removed from the gc
toolchain in Go 1.5, so it is unlikely that anybody is trying to use it.
Reviewed-on: https://go-review.googlesource.com/34557
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@243805 138bc75d-0d04-0410-961f-82ee72b054a4
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Rewrite the AES hashing code from gc assembler to C code using
intrinsics. The resulting code generates the same hash code for the
same input as the gc code--that doesn't matter as such, but testing it
ensures that the C code does something useful.
Also change mips64pe32le to mips64p32le in configure script--noticed
during CL review.
Reviewed-on: https://go-review.googlesource.com/34022
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@243445 138bc75d-0d04-0410-961f-82ee72b054a4
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The gc library allocates a _panic struct on the stack. This does not
work for gccgo, because when a deferred function recovers the panic we
unwind the stack up to that point so that returning from the function
will work correctly.
Allocating on the stack fine if the panic is not recovered, and it
works fine if the panic is recovered by a function that
returns. However, it fails if the panic is recovered by a function
that itself panics, and if that second panic is then recovered by a
function higher up on the stack. When we unwind the stack to that
second panic, the g will wind up pointing at a panic farther down on
the stack. Even then everything will often work fine, except when the
deferred function catching the second panic makes a bunch of calls
that use stack space before returning. In that case the code can
overwrite the panic struct, which will then cause disaster when we
remove the struct from the linked list, as the link field will be
garbage. This case is rare enough that all the x86 tests were passing,
but there was a failure on ppc64le.
Before https://golang.org/cl/33414 we allocated the panic struct on
the heap, so go back to doing that again.
Fixes golang/go#18228.
Reviewed-on: https://go-review.googlesource.com/34027
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@243444 138bc75d-0d04-0410-961f-82ee72b054a4
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The library initialization code in go-libmain.c sets the C variable
runtime_isarchive but failed to set the Go variable runtime.isarchive.
We don't currently have a way to let C code access an unexported Go
variable, but fortunately the only time the Go function initsig is
called with an argument of true is exactly where we want to set
isarchive. So let initsig do it.
Reviewed-on: https://go-review.googlesource.com/33753
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@243094 138bc75d-0d04-0410-961f-82ee72b054a4
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Since gccgo can trace back through C code as easily as Go code, we
should print C functions in the traceback.
This worked before https://golang.org/cl/31230 for a dumb reason. The
default value for runtime.traceback_cache was, and is, 2 << 2, meaning
to print all functions. The old C code for runtime_parsedebugvars
would return immediately and do nothing if the environment variable
GODEBUG was not set (if GODEBUG was set it would later call
setTraceback. The new Go code for runtime.parsedebugvars does not
return immediately if GODEBUG is not set, and always calls
setTraceback. Either way, if GOTRACEBACK is not set, setTraceback
would set traceback_cache to 1 << 2, meaning to only print non-runtime
functions and having the effect of not printing plain C functions.
Keep the current handling of GODEBUG/GOTRACEBACK, which matches the gc
library, but add an extra check to print C functions by default.
Reviewed-on: https://go-review.googlesource.com/33717
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@243083 138bc75d-0d04-0410-961f-82ee72b054a4
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With -buildmode=c-archive, initsig is called before the memory
allocator has been initialized. The code was doing a memory
allocation because of the call to funcPC(sigtramp). When escape
analysis is fully implemented, that call should not allocate. For
now, finesse the issue by calling a C function to get the C function
pointer value of sigtramp.
When returning from a call from C to a Go function, a deferred
function is run to go back to syscall mode. When the call occurs on a
non-Go thread, that call sets g to nil, making it impossible to add
the _defer struct back to the pool. Just drop it and let the garbage
collector clean it up.
Reviewed-on: https://go-review.googlesource.com/33675
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242992 138bc75d-0d04-0410-961f-82ee72b054a4
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cmd/go: don't check standard packages when using gccgo
This copies https://golang.org/cl/33295 to libgo.
This fixes GCC PR 77910.
Reviewed-on: https://go-review.googlesource.com/33471
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242724 138bc75d-0d04-0410-961f-82ee72b054a4
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The actual stack unwind code is still in C, but the rest of the code,
notably all the memory allocation, is now in Go. The names are changed
to the names used in the Go 1.7 runtime, but the code is necessarily
somewhat different.
The __go_makefunc_can_recover function is dropped, as the uses of it
were removed in https://golang.org/cl/198770044.
Reviewed-on: https://go-review.googlesource.com/33414
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242715 138bc75d-0d04-0410-961f-82ee72b054a4
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This doesn't change any actual code, it just starts using the Go
definition of the schedt type and the sched variable rather than the C
definitions.
The schedt type is tweaked slightly for gccgo. We aren't going to
release goroutine stacks, so we don't need separate gfreeStack and
gfreeNostack lists. We only have one size of defer function, so we
don't need a list of 5 different pools.
Reviewed-on: https://go-review.googlesource.com/33364
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242600 138bc75d-0d04-0410-961f-82ee72b054a4
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They were removed from the master Go library in 2012
(https://golang.org/cl/5979046) but somehow that was not reflected here.
Reviewed-on: https://go-review.googlesource.com/33391
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242592 138bc75d-0d04-0410-961f-82ee72b054a4
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in the gofrontend repo, which is supposed to be the master copy.
Remove a few files in libgo that somehow were not deleted in the past.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242583 138bc75d-0d04-0410-961f-82ee72b054a4
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Update a few binary files that were changed in the master gc repo,
copied into the gofrontend repo, but not correctly copied into the GCC
repo. The changes are all minor and do not affect any actual tests.
Two instances of "http" changed to "https", and two timestamps were
zeroed out.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242582 138bc75d-0d04-0410-961f-82ee72b054a4
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As we move toward the Go 1.7 garbage collector, it's essential that all
allocation of values that can contain Go pointers be done using the
correct type descriptor. That is simplest if we do all such allocation
in Go code. This rewrites the code that converts from a Go type to a
libffi CIF into Go.
Reviewed-on: https://go-review.googlesource.com/33353
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242578 138bc75d-0d04-0410-961f-82ee72b054a4
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A step toward eliminating goc2c.
Drop the exported parfor code; it was needed for tests in the past, but
no longer is. The Go 1.7 runtime no longer uses parfor.
Reviewed-on: https://go-review.googlesource.com/33324
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242509 138bc75d-0d04-0410-961f-82ee72b054a4
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Apparently on Solaris 10 a SA_SIGINFO signal handler can be invoked with
a nil info argument. I would not have believed it but I've now seen it
happen, and the sigaction man page actually says "If the second argument
is not equal to NULL, it points to a siginfo_t structure...." So, if
that happens, don't crash.
Also fix another case where we want to make sure that &T{} does not
allocate.
Reviewed-on: https://go-review.googlesource.com/33150
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242403 138bc75d-0d04-0410-961f-82ee72b054a4
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Add a little shell script to auto-generate runtime.sigtable from the
known signal names.
Force the main package to always import the runtime package. Otherwise
some runtime package global variables may never be initialized.
Set the syscallsp and syscallpc fields of g when entering a syscall, so
that the runtime package knows when a g is executing a syscall.
Fix runtime.funcPC to avoid dead store elimination of the interface
value when the function is inlined.
Reviewed-on: https://go-review.googlesource.com/33025
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@242060 138bc75d-0d04-0410-961f-82ee72b054a4
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When using cgo -gccgo calls to C.GoString, C.GoStringN, and C.GoBytes
are turned into calls to __go_byte_array_to_string and
__go_string_to_byte_array. Those functions were removed when the string
code was copied from Go 1.7, but we still need them for cgo. While cgo
should be updated, old versions will exist for some time.
Reviewed-on: https://go-review.googlesource.com/32474
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241743 138bc75d-0d04-0410-961f-82ee72b054a4
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Change the compiler handle append as the gc compiler does: call a
function to grow the slice, but otherwise assign the new elements
directly to the final slice.
For the current gccgo memory allocator the slice code has to call
runtime_newarray, not mallocgc directly, so that the allocator sets the
TypeInfo_Array bit in the type pointer.
Rename the static function cnew to runtime_docnew, so that the stack
trace ignores it when ignoring runtime functions. This was needed to
fix the runtime/pprof tests on 386.
Reviewed-on: https://go-review.googlesource.com/32218
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241667 138bc75d-0d04-0410-961f-82ee72b054a4
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libgo: incorporate fix for timezone test
This brings over the test-only fix for issue 17276 into gccgo/libgo
(with tzdata-2016g there is a new zone abbreviation). This is a
copy of https://golang.org/cl/29995.
Reviewed-on: https://go-review.googlesource.com/32182
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241661 138bc75d-0d04-0410-961f-82ee72b054a4
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runtime: build lfstack_32bit.go on ppc
Missed a build tag. This is GCC PR 78143.
Reviewed-on: https://go-review.googlesource.com/32295
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241659 138bc75d-0d04-0410-961f-82ee72b054a4
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Note that lfstack_64bit.go was modified for Solaris support in a
different, and better, way than the superseded lfstack.goc code.
Reviewed-on: https://go-review.googlesource.com/31673
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241427 138bc75d-0d04-0410-961f-82ee72b054a4
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I started to copy the Go 1.7 interface code, but the gc and gccgo
representations of interfaces are too different. So instead I rewrote
the gccgo interface code from C to Go. The code is largely the same as
it was, but the names are more like those used in the gc runtime.
I also copied over the string comparison functions, and tweaked the
compiler to use eqstring when comparing strings for equality.
Reviewed-on: https://go-review.googlesource.com/31591
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241384 138bc75d-0d04-0410-961f-82ee72b054a4
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The C definition is 1U << 31. Reportedly on some systems GCC's
-fgo-dump-spec can print this as -2147483648.
Reviewed-on: https://go-review.googlesource.com/31448
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241347 138bc75d-0d04-0410-961f-82ee72b054a4
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Reviewed-on: https://go-review.googlesource.com/31325
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241307 138bc75d-0d04-0410-961f-82ee72b054a4
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While we're at it, update the runtime/debug package, and start running
its testsuite by default. I'm not sure why runtime/debug was not
previously updated to 1.7. Doing that led me to fix some minor aspects
of runtime.Stack and the C function runtime/debug.readGCStats.
Reviewed-on: https://go-review.googlesource.com/31251
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241261 138bc75d-0d04-0410-961f-82ee72b054a4
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Fix handling of function values for -fgo-c-header to generate FuncVal*,
not simply FuncVal.
While we're here change runtime.nanotime to use clock_gettime with
CLOCK_MONOTONIC, rather than gettimeofday. This is what the gc library
does. It provides nanosecond precision and a monotonic clock.
Reviewed-on: https://go-review.googlesource.com/31232
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241197 138bc75d-0d04-0410-961f-82ee72b054a4
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Also create a gccgo version of some of the traceback code in
traceback_gccgo.go, replacing some code currently in C.
This required modifying the compiler so that when compiling the runtime
package a slice expression does not cause a local array variable to
escape to the heap.
Reviewed-on: https://go-review.googlesource.com/31230
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241189 138bc75d-0d04-0410-961f-82ee72b054a4
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In order to port stack backtraces to Go, we need the ability to look up
file/line information for PC values without allocating memory. This
patch moves the handling of Func from C code to Go code, and simplifies
the C code to just look up function/file/line/entry information for a PC.
Reviewed-on: https://go-review.googlesource.com/31150
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241172 138bc75d-0d04-0410-961f-82ee72b054a4
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This is a backport of https://go-review.googlesource.com/30870.
Reviewed-on: https://go-review.googlesource.com/30916
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241171 138bc75d-0d04-0410-961f-82ee72b054a4
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This replaces runtime/cpuprof.goc with go/runtime/cpuprof.go and adjusts
the supporting code in runtime/proc.c.
This adds another case where the compiler needs to avoid heap allocation
in the runtime package: when evaluating a method expression into a
closure. Implementing this required moving the relevant code from
do_get_backend to do_flatten, so that I could easily add a temporary
variable. Doing that let me get rid of Bound_method_expression::do_lower.
Reviewed-on: https://go-review.googlesource.com/31050
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241163 138bc75d-0d04-0410-961f-82ee72b054a4
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This replaces mem.go and the C runtime_ReadMemStats function with the Go
1.7 mstats.go.
The GCStats code is commented out for now. The corresponding gccgo code
is in runtime/mgc0.c.
The variables memstats and worldsema are shared between the Go code and
the C code, but are not exported. To make this work, add temporary
accessor functions acquireWorldsema, releaseWorldsema, getMstats (the
latter known as mstats in the C code).
Check the preemptoff field of m when allocating and when considering
whether to start a GC. This works with the new stopTheWorld and
startTheWorld functions in Go, which are essentially the Go 1.7
versions.
Change the compiler to stack allocate closures when compiling the
runtime package. Within the runtime packages closures do not escape.
This is similar to what the gc compiler does, except that the gc
compiler, when compiling the runtime package, gives an error if escape
analysis shows that a closure does escape. I added this here because
the Go version of ReadMemStats calls systemstack with a closure, and
having that allocate memory was causing some tests that measure memory
allocations to fail.
Reviewed-on: https://go-review.googlesource.com/30972
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241124 138bc75d-0d04-0410-961f-82ee72b054a4
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It's unnecessary and it reportedly breaks the build on arm64 GNU/Linux.
Reviewed-on: https://go-review.googlesource.com/30978
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241084 138bc75d-0d04-0410-961f-82ee72b054a4
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Add compiler support for turning concatenating strings into a call to
a runtime function that takes the appropriate number of arguments.
Rename some local variables in mgc0.c to avoid macros that the new
rune.go causes to appear in runtime.inc.
Reviewed-on: https://go-review.googlesource.com/30827
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241074 138bc75d-0d04-0410-961f-82ee72b054a4
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Reviewed-on: https://go-review.googlesource.com/30955
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241072 138bc75d-0d04-0410-961f-82ee72b054a4
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This triggered a check in releaseSudog that g.param not nil, because
libgo uses the param field when starting a goroutine. Fixed by clearing
g->param in kickoff in proc.c.
Reviewed-on: https://go-review.googlesource.com/30951
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241067 138bc75d-0d04-0410-961f-82ee72b054a4
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Since sparc is a valid architecture, the name of
getrandom_linux_sparc.go means that it will be ignored on sparc64,
even though it's whitelisted with a +build line.
On SPARC, clone has a unique return value convention which requires
some inline assembly to convert it to the normal convention.
Reviewed-on: https://go-review.googlesource.com/30873
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@241051 138bc75d-0d04-0410-961f-82ee72b054a4
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Update the compiler to use the new names. Add calls to printlock and
printunlock around print statements. Move expression evaluation before
the call to printlock. Update g's writebuf field to a slice, and adjust
C code accordingly.
Reviewed-on: https://go-review.googlesource.com/30717
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240958 138bc75d-0d04-0410-961f-82ee72b054a4
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Update the compiler to use the new names. Add calls to printlock and
printunlock around print statements. Move expression evaluation before
the call to printlock. Update g's writebuf field to a slice, and adjust
C code accordingly.
Reviewed-on: https://go-review.googlesource.com/30717
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240956 138bc75d-0d04-0410-961f-82ee72b054a4
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Change the compiler to use the new routines. Drop the separation of
small and large values when sending on a channel. Allocate the select
struct on the stack. Remove the old C implementation of channels. Adjust
the garbage collector for the new data structure.
Bring in part of the tracing code, enough for the channel code to call.
Bump the permitted number of allocations in one of the tests in
context_test.go. The difference is that now receiving from a channel
allocates a sudog, which the C code used to simply put on the
stack. This will be somewhat better when we port proc.go.
Reviewed-on: https://go-review.googlesource.com/30714
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240941 138bc75d-0d04-0410-961f-82ee72b054a4
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Remove the old locking code written in C.
Add a shell script mkrsysinfo.sh to generate the runtime_sysinfo.go
file, so that we can get Go copies of the system time structures and
other types.
Tweak the compiler so that when compiling the runtime package the
address operator does not cause local variables to escape. When the gc
compiler compiles the runtime, an escaping local variable is treated as
an error. We should implement that, instead of this change, when escape
analysis is turned on.
Tweak the compiler so that the generated C header does not include names
that start with an underscore followed by a non-upper-case letter,
except for the special cases of _defer and _panic. Otherwise we
translate C types to Go in runtime_sysinfo.go and then generate those Go
types back as C types in runtime.inc, which is useless and painful for
the C code.
Change entersyscall and friends to take a dummy argument, as the gc
versions do, to simplify calls from the shared code.
Reviewed-on: https://go-review.googlesource.com/30079
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240657 138bc75d-0d04-0410-961f-82ee72b054a4
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Also copy over cputicks.go, env_posix.go, vdso_none.go, stubs2.go, and a
part of os_linux.go. Remove the corresponding functions from the C code
in libgo/go/runtime. Add some transitional support functions to
stubs.go. This converts several minor functions from C to Go.
Reviewed-on: https://go-review.googlesource.com/29962
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240609 138bc75d-0d04-0410-961f-82ee72b054a4
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Reviewed-on: https://go-review.googlesource.com/29678
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240457 138bc75d-0d04-0410-961f-82ee72b054a4
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This change removes the gccgo-specific hashmap code and replaces it with
the hashmap code from the Go 1.7 runtime. The Go 1.7 hashmap code is
more efficient, does a better job on details like when to update a key,
and provides some support against denial-of-service attacks.
The compiler is changed to call the new hashmap functions instead of the
old ones.
The compiler now tracks which types are reflexive and which require
updating when used as a map key, and records the information in map type
descriptors.
Map_index_expression is simplified. The special case for a map index on
the right hand side of a tuple expression has been unnecessary for some
time, and is removed. The support for specially marking a map index as
an lvalue is removed, in favor of lowering an assignment to a map index
into a function call. The long-obsolete support for a map index of a
pointer to a map is removed.
The __go_new_map_big function (known to the compiler as
Runtime::MAKEMAPBIG) is no longer needed, as the new runtime.makemap
function takes an int64 hint argument.
The old map descriptor type and supporting expression is removed.
The compiler was still supporting the long-obsolete syntax `m[k] = 0,
false` to delete a value from a map. That is now removed, requiring a
change to one of the gccgo-specific tests.
The builtin len function applied to a map or channel p is now compiled
as `p == nil ? 0 : *(*int)(p)`. The __go_chan_len function (known to
the compiler as Runtime::CHAN_LEN) is removed.
Support for a shared zero value for maps to large value types is
introduced, along the lines of the gc compiler. The zero value is
handled as a common variable.
The hash function is changed to take a seed argument, changing the
runtime hash functions and the compiler-generated hash functions.
Unlike the gc compiler, both the hash and equal functions continue to
take the type length.
Types that can not be compared now store nil for the hash and equal
functions, rather than pointing to functions that throw. Interface hash
and comparison functions now check explicitly for nil. This matches the
gc compiler and permits a simple implementation for ismapkey.
The compiler is changed to permit marking struct and array types as
incomparable, meaning that they have no hash or equal function. We use
this for thunk types, removing the existing special code to avoid
generating hash/equal functions for them.
The C runtime code adds memclr, memequal, and memmove functions.
The hashmap code uses go:linkname comments to make the functions
visible, as otherwise the compiler would discard them.
The hashmap code comments out the unused reference to the address of the
first parameter in the race code, as otherwise the compiler thinks that
the parameter escapes and copies it onto the heap. This is probably not
needed when we enable escape analysis.
Several runtime map tests that ere previously skipped for gccgo are now
run.
The Go runtime picks up type kind information and stubs. The type kind
information causes the generated runtime header file to define some
constants, including `empty`, and the C code is adjusted accordingly.
A Go-callable version of runtime.throw, that takes a Go string, is
added to be called from the hashmap code.
Reviewed-on: https://go-review.googlesource.com/29447
* go.go-torture/execute/map-1.go: Replace old map deletion syntax
with call to builtin delete function.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240334 138bc75d-0d04-0410-961f-82ee72b054a4
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Patch from Rainer Orth.
Reviewed-on: https://go-review.googlesource.com/29436
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@240285 138bc75d-0d04-0410-961f-82ee72b054a4
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