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38d65187
by Matthew Pickering at 2025-10-21T13:12:20+01:00
Fix stack decoding when using profiled runtime
There are three fixes in this commit.
* We need to replicate the `InfoTable` and `InfoTableProf`
approach for the other stack constants (see the new Stack.ConstantsProf
file).
* Then we need to appropiately import the profiled or non-profiled
versions.
* Finally, there was an incorrect addition in `stackFrameSize`. We need
to cast after performing addition on words.
Fixes #26507
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17231bfb
by fendor at 2025-10-21T13:12:20+01:00
Add regression test for #26507
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4f5bf93b
by Simon Peyton Jones at 2025-10-25T04:05:34-04:00
Postscript to fix for #26255
This MR has comments only
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6ef22fa0
by IC Rainbow at 2025-10-26T18:23:01-04:00
Add SIMD primops for bitwise logical operations
This adds 128-bit wide and/or/xor instructions for X86 NCG,
with both SSE and AVX encodings.
```
andFloatX4# :: FloatX4# -> FloatX4# -> FloatX4# -- andps / vandps
andDoubleX2# :: DoubleX2# -> DoubleX2# -> DoubleX2# -- andpd / vandpd
andInt8X16# :: Int8X16# -> Int8X16# -> Int8X16# -- pand / vpand
```
The new primops are available on ARM when using LLVM backend.
Tests added:
- simd015 (floats and doubles)
- simd016 (integers)
- simd017 (words)
Fixes #26417
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fbdc623a
by sheaf at 2025-10-26T18:23:52-04:00
Add hints for unsolved HasField constraints
This commit adds hints and explanations for unsolved 'HasField'
constraints.
GHC will now provide additional explanations for an unsolved constraint
of the form 'HasField fld_name rec_ty fld_ty'; the details are laid out in
Note [Error messages for unsolved HasField constraints], but briefly:
1. Provide similar name suggestions (e.g. mis-spelled field name)
and import suggestions (record field not in scope).
These result in actionable 'GhcHints', which is helpful to provide
code actions in HLS.
2. Explain why GHC did not solve the constraint, e.g.:
- 'fld_name' is not a string literal (e.g. a type variable)
- 'rec_ty' is a TyCon without any fields, e.g. 'Int' or 'Bool'.
- 'fld_ty' contains existentials variables or foralls.
- The record field is a pattern synonym field (GHC does not generate
HasField instances for those).
- 'HasField' is a custom 'TyCon', not actually the built-in
'HasField' typeclass from 'GHC.Records'.
On the way, we slightly refactor the mechanisms for import suggestions
in GHC.Rename.Unbound. This is to account for the fact that, for
'HasField', we don't care whether the field is imported qualified or
unqualified. 'importSuggestions' was refactored, we now have
'sameQualImportSuggestions' and 'anyQualImportSuggestions'.
Fixes #18776 #22382 #26480
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99d5707f
by sheaf at 2025-10-26T18:23:52-04:00
Rename PatSyn MatchContext to PatSynCtx to avoid punning
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7955f30d
by Simon Peyton Jones at 2025-10-28T22:51:29+00:00
Add a HsWrapper optimiser
This is an experimental MR. The big change is adding
`GHC.Tc.Types.Evidence.optHsWrapper
Addresses #26349
A bit more
Working, I think
Remove silly trace
Better now
Added WpSubType
Remove trace
better
More
Comments and one test wibble
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6676d34d
by Simon Peyton Jones at 2025-10-28T23:32:55+00:00
Improve mkWpFun_FRR
This commit ensures that `mkWpFun_FRR` directly produces a `FunCo` in
the cases where it can.
(Previously called `mkWpFun` which in turn optimised to a `FunCo`, but
that made the smarts in `mkWpFun` /essential/ rather than (as they
should be) optional.