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rotatedValueBitSize should be calculated from genActualType(rotatedValue->gtType) instead of rotatedValue->gtType.
I added a test that was failing with an assert because of this bug: rol32ushort.
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1. Recognize patterns with XOR instead of OR, e.g., (x << 5) ^ (x >> 27).
2. Recognize patterns with instance or static fields and ref params.
Only GTF_PERSISTENT_SIDE_EFFECTS (i.e., calls and assignments) and
GTF_ORDER_SIDEEFF (i.e., volatile accesses) prevent tree matching.
Before this change we used GTF_ALL_EFFECT.
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This test used to create ~3000 threads. Reduce that to ~300 while we sort out what is behind #1966.
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This change adds code to recognize rotation idioms and generate efficient instructions for them.
Two new operators are added: GT_ROL and GT_ROR.
The patterns recognized:
(x << c1) | (x >>> c2) => x rol c1
(x >>> c1) | (x << c2) => x ror c2
where c1 and c2 are constant and c1 + c2 == bitsize(x)
(x << y) | (x >>> (N - y)) => x rol y
(x >>> y) | (x << (N - y)) => x ror y
where N == bitsize(x)
(x << y & M1) | (x >>> (N - y) & M2) => x rol y
(x >>> y & M1) | (x << (N - y) & M2) => x ror y
where N == bitsize(x)
M1 & (N - 1) == N - 1
M2 & (N - 1) == N - 1
For a simple benchmark with 4 rotation patterns in a tight loop
time goes from 7.324 to 2.600 (2.8 speedup).
Rotations found and optimized in mscorlib:
System.Security.Cryptography.SHA256Managed::RotateRight
System.Security.Cryptography.SHA384Managed::RotateRight
System.Security.Cryptography.SHA512Managed::RotateRight
System.Security.Cryptography.RIPEMD160Managed:MDTransform (320 instances!)
System.Diagnostics.Tracing.EventSource.Sha1ForNonSecretPurposes::Rol1
System.Diagnostics.Tracing.EventSource.Sha1ForNonSecretPurposes::Rol5
System.Diagnostics.Tracing.EventSource.Sha1ForNonSecretPurposes::Rol30
System.Diagnostics.Tracing.EventSource.Sha1ForNonSecretPurposes::Drain
(9 instances of Sha1ForNonSecretPurposes::Rol* inlined)
Closes #1619.
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The following changes are being submitted in order to prepare for a large collection of tests to be ported from the internal legacy test tree.
- Adds "build kinds" to the test tree.
- Adds some documentation for the test tree
- Adds a Test Priority feature (see documentation Documentation/project-docs/tests.md for more information.
- Dropped the cs_template.csproj types and converted to individual CSProject files.
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This changes moves coreclr onto DNX (same version as corefx). Theoretically, this should allow these tests to target the desktop CLR. All of the old package.config files are gone and replaced with corresponding project.json files. The up front restore behavior is retained. Tests are now buildable individually, though not runnable in a similar fashion.
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We spend a fair amount of time (six wall clock minutes on my machine)
doing package restore for the JIT tests. This is because each project
has its own packages.config file, so during the build we call nuget
restore for each project.
There are only four unique packages.config files for all these tests, so
this change moves them to tests/src/JIT/config and updates the project
files to consume them from there.
This means during the build the `EnsureDependencies` target does not
need to invoke nuget restore as often and the build is much faster as a
result.
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This test exercises the JIT's ability to probe the stack on windows for dynamic allocation. It uses multiple threads and a two-stage allocation pattern to try and hit various boundary cases.
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This is a test case to cover switch expansion in Reader.
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[tfs-changeset: 1407945]
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