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Multiple Mono Mini Targets and Mono Interpreter missing support for float->nint casting. #46820

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jkoritzinsky opened this issue Jan 11, 2021 · 1 comment · Fixed by #49427
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Multiple Mono Mini Targets and Mono Interpreter missing support for float->nint casting. #46820

jkoritzinsky opened this issue Jan 11, 2021 · 1 comment · Fixed by #49427
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@BrzVlad
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area-Codegen-meta-mono bug
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6.0.0

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@jkoritzinsky
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Description

Mono's Mini JIT compiler on multiple platforms and the Mono Interpreter both lack support for casting a float value to a native int storage.

Configuration

  • .NET 6 master (found in PR)
  • Mono Interpreter
  • Mono Mini targeting Linux arm64
  • Based on a cursory look through source, also effects Mini targetting ARM32 and LLVM

Regression?

I don't believe so.

Other information

For the interpreter, this shows up as the following assert:

  • Assertion: should not be reached at /Users/runner/work/1/s/src/mono/mono/mini/interp/transform.c:5065

For JIT, this is the message that shows up. The assert initially fired from /__w/1/s/src/mono/mono/mini/mini-codegen.c:1251

"Opcode 'r4_conv_to_i' missing from machine description file."

Discovered in #46401 where a test casts a float value to the C# nint type.
@Dotnet-GitSync-Bot Dotnet-GitSync-Bot added the untriaged New issue has not been triaged by the area owner label Jan 11, 2021
@jkoritzinsky jkoritzinsky mentioned this issue Jan 11, 2021
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jkoritzinsky added a commit to jkoritzinsky/runtime that referenced this issue Jan 11, 2021
@jkoritzinsky
Disable ThisCallTest on Mono due to dotnet#46820
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@lambdageek
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/cc @SamMonoRT

@SamMonoRT SamMonoRT added this to the 6.0.0 milestone Jan 12, 2021
@SamMonoRT SamMonoRT removed the untriaged New issue has not been triaged by the area owner label Jan 12, 2021
jkoritzinsky added a commit that referenced this issue Jan 12, 2021
@jkoritzinsky
Implement System.Runtime.InteropServices.CLong/CULong/NFloat (#46401)
79e0e27 
* Implement managed side of CLong/CULong/NFloat.

* Make CLong, CULong, and NFloat intrinsically handled correctly by the JIT.

* Add framework tests for CLong, CULong, and NFloat.

* Add interop test of CLong to validate calling convention semantics.

* Update CULong.cs

* Fix implicit conversions.

* Fix overflow and equality test failures.

* Fix formatting.

* Fix formatting and add function header.

* Add doc comments.

* Don't throw on float out of range. Rename tests.

* Rewrite EqualsTest implementations more straightforward.

* Fix NFloat tests.

* Use .Equals instead of ==

* Use ToString directly instead of hard coding the expected value.

* Update the emitted assembly stub's thiscall retbuf support for x86 to account for the new native exchange types.

* Add sizeof tests.

* Add test with struct containing CLong.

* Disable ThisCallTest on Mono due to #46820

* validate type name.
@BrzVlad BrzVlad mentioned this issue Feb 8, 2021
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@BrzVlad BrzVlad mentioned this issue Mar 10, 2021
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@ghost ghost added the in-pr There is an active PR which will close this issue when it is merged label Mar 10, 2021
@ghost ghost removed the in-pr There is an active PR which will close this issue when it is merged label Mar 10, 2021
@ghost ghost locked as resolved and limited conversation to collaborators Apr 9, 2021
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@BrzVlad BrzVlad

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[mono] Add missing opcodes for r4 to native int conversions BrzVlad/runtime
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@lambdageek @jkoritzinsky @BrzVlad @Dotnet-GitSync-Bot @SamMonoRT