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For ARM, doing a secure delegate call requires adding
a custom calling convention argument R4 as the address of the
secure delegate invoke indirection cell. This is done using the
fgMorphArgs nonStandardArgs mechanism, and the argument is added
at the end. For calls with 4 or more register arguments, this
didn't work: we would initially set the non-standard arg as a
non-register argument, and the nonStandardArgs check didn't
consider converting an argument from a stack argument back to
a register argument. The fix allows nonStandardArgs to be either
stack or register arguments, no matter what their place in the
argument list would imply.
Fixes #17738
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rtm-26502-02, respectively (#17874)
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riarenas/riarenas/revert-private-intermediate-containers
Revert "Make blobfeed containers private. (#17792)"
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This reverts commit 4950b038c84c223ddd9fc198dcf5722d46e21552.
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respectively (#17860)
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Switch source build property to DotNetBuildFromSource
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exception (#17710) (#17844)
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(#17842)
Add portable PDB caching to StackTrace.
This is the mscorlib side of the change.
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Detect source-build via DotNetBuildFromSource instead of
DotNetBuildOffline which is set for the tarball build.
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[release/2.1] Remove Alpine 3.6 builds
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rc1-26423-06, release-20180430-0045, respectively (#17696)
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This prevents the IL linker from optimizing away some properties/methods
related to tasks that are used by a debugger but are not referenced
anywhere else in coreclr.
This specifically fixes async callstack frames for the xplat C# debugger.
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* Fix Number.ParseNumber to not assume '\0' at the end of a span
This routine was written for parsing strings, which are implicitly null-terminated, and it doesn't factor in string length but instead uses tricks to exit loops when the next character is null. Now that the routine is also used for spans, this is very problematic, as spans need not be null terminated, and generally aren't when they represent slices, and expecting a null termination like this can result in walking off the end of valid memory.
I would like to see all of this code rewritten to use span. In the interim, though, as a short-term fix I've changed all dereferences of the current position to compare against the length of the span (or, rather, a pointer to the end), and pretend that a null terminator was found if we've hit the end.
* Address PR feedback
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The alpine 3.6 builds have been replaced with the more generic
linux-musl builds so removing them.
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Make intra-build containers private
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Fixes #17716
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(#17712) (#17714)
* Preserve pinned flag in {ReadOnly}Memory<T>.Slice
* Address PR feedback.
Signed-off-by: dotnet-bot-corefx-mirror <dotnet-bot@microsoft.com>
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commit b4d701a72c20b695715371a99b48473053b63250
Author: Ahson Khan <ahkha@microsoft.com>
Date: Wed Apr 11 13:43:36 2018 -0700
Add CreateFromPinnedArray to System.Memory ref and add tests (#28992)
* Fixing bug in Memory.Pin and adding API to uapaot baseline
commit 76e01040fcfdb1c652ef1bf4e8e123c7db4e1be8
Author: Ahson Khan <ahkha@microsoft.com>
Date: Mon Apr 16 01:54:54 2018 -0700
Update xml comment for {ReadOnly}Memory.Pin method (#29137)
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Update BuildTools, CoreClr, CoreFx, PgoData to rc1-02719-01, rc1-26419-03, rc1-26419-03, release-20180419-0038, respectively (release/2.1)
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[release/2.1] Add linux-musl build leg
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The debug/checked builds don't publish and aren't submitted for testing currently. To reduce resource usage during the build, do not build these pipelines for now.
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rc1-26419-03, release-20180419-0038, respectively
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Need to include the `-x64` in the output rid.
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Skip container creation if not in flatcontainer mode
Container creation isn't required and would be incorrect if the ExpectedFeedUrl's account name didn't match AccountName
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[Arm64] Disable SIMD in crossgen (added as part of #14633)
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Fix extra register-dependency on mem-form cvtsd/s2ss
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* Fix dlbigleak
* cleanup dlstack
* Fix doublinknoleak
* Fix doublinkstay
* Fix dlcollect
* Fix doublinkgen
* Fix dlbigleakthd
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Cleanup ubuntu arm build machine 2.1
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Merge master into release/2.1
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master-20180415-0051, respectively (#17540)
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Don't use runtesttilstable script for Ubuntu arm jobs
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Byref pointers need to point within their "host" object -- thus
the alternate name "interior pointers". If the JIT creates and
reports a pointer as a "byref", but it points outside the host
object, and a GC occurs that moves the host object, the byref
pointer will not be updated. If a subsequent calculation puts
the byref "back" into the host object, it will actually be pointing
to garbage, since the host object has moved.
This occurred on ARM with array index calculations, in particular
because ARM doesn't have a single-instruction "base + scale*index + offset"
addressing mode. Thus, we were generating, for the jaggedarr_cs_do
test case, `ProcessJagged3DArray()` function:
```
// r0 = array object, r6 = computed index offset. We mark r4 as a byref.
add r4, r0, r6
// r4 - 32 is the offset of the object we care about. Then we load the array element.
// In this case, the loaded element is a gcref, so r4 becomes a gcref.
ldr r4, [r4-32]
```
We get this math because the user code uses `a[i - 10]`, which is
essentially `a + (i - 10) * 4 + 8` for element size 4. This is optimized
to `a + i * 4 - 32`. In the above code, `r6` is `i * 4`. In this case,
after the first instruction, `r4` can point beyond the array.
If a GC happens, `r4` isn't updated, and the second instruction loads garbage.
There are several fixes:
1. Change array morphing in `fgMorphArrayIndex()` to rearrange the array index
IR node creation to only create a byref pointer that is precise; don't create
"intermediate" byref pointers that don't represent the actual array element
address being computed. The tree matching code that annotates the generated tree
with field sequences needs to be updated to match the new form.
2. Change `fgMoveOpsLeft()` to prevent the left-weighted reassociation optimization
`[byref]+ (ref, [int]+ (int, int)) => [byref]+ ([byref]+ (ref, int), int)`. This
optimization creates "incorrect" byrefs that don't necessarily point within
the host object.
3. Add an additional condition to the `Fold "((x+icon1)+icon2) to (x+(icon1+icon2))"`
morph optimization to prevent merging of constant TYP_REF nodes, which now were
being recognized due to different tree shapes. This was probably always a problem,
but the particular tree shape wasn't seen before.
These fixes are all-platform. However, to reduce risk at this point, the are
enabled for ARM only, under the `FEATURE_PREVENT_BAD_BYREFS` `#ifdef`.
Fixes #17517.
There are many, many diffs.
For ARM32 ngen-based desktop asm diffs, it is a 0.30% improvement across all
framework assemblies. A lot of the diffs seem to be because we CSE the entire
array address offset expression, not just the index expression.
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