[clang] check constant template parameters in dependent contexts
This patch makes sure constant template parameters are checked even
in dependent contexts.
This can for example diagnose narrowings earlier, but this is permitted
as these templates would have no valid instantiations.
[SelectionDAG] Deal with POISON for INSERT_VECTOR_ELT/INSERT_SUBVECTOR (#143102)
As reported in https://github.com/llvm/llvm-project/issues/141034
SelectionDAG::getNode had some unexpected
behaviors when trying to create vectors with UNDEF elements. Since
we treat both UNDEF and POISON as undefined (when using isUndef())
we can't just fold away INSERT_VECTOR_ELT/INSERT_SUBVECTOR based on
isUndef(), as that could make the resulting vector more poisonous.
Same kind of bug existed in DAGCombiner::visitINSERT_SUBVECTOR.
Here are some examples:
This fold was done even if vec[idx] was POISON:
INSERT_VECTOR_ELT vec, UNDEF, idx -> vec
This fold was done even if any of vec[idx..idx+size] was POISON:
INSERT_SUBVECTOR vec, UNDEF, idx -> vec
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[PatternMatch] Introduce match functor (NFC) (#159386)
A common idiom is the usage of the PatternMatch match function within a
functional algorithm like all_of. Introduce a match functor to shorten
this idiom.
Co-authored-by: Luke Lau <luke at igalia.com>
[LLVM] Fix offload and update CUDA ABI for all SM values (#159354)
Summary:
Turns out the new CUDA ABI now applies retroactively to all the other
SMs if you upgrade to CUDA 13.0. This patch changes the scheme, keeping
all the SM flags consistent but using an offset.
Fixes: https://github.com/llvm/llvm-project/issues/159088
[Support] Simplify has_StreamOperator (NFC) (#159242)
Without this patch, we are doing a roundtrip on types. Specifically,
if decltype(...) is well formed, std::is_same_v evaluates to a boolean
value. We then pass the boolean value to std::enable_if_t, go through
the sizeof(char)/sizeof(double) trick, and then come back to a boolean
value.
This patch simplifies all this by having test() return
std::is_same<...>. The "caller" attaches ::value, so effectively we
are using std::is_same<...>::value when decltype(...) is well formed,
bypassing std::enable_if_t and the sizeof(char)/sizeof(double) trick.
If we did not care about the return type of the shift operator, we
could use llvm::is_detected, but the return type check doesn't allow
us to simplify things that far.
[clang] Avoid warnings about enum mismatch in ternary expressions. NFC. (#159338)
This avoids the following kind of warning when built with GCC:
../../clang/lib/Sema/SemaStmtAttr.cpp: In function ‘clang::Attr* ProcessStmtAttribute(clang::Sema&, clang::Stmt*, const clang::ParsedAttr&, clang::SourceRange)’:
../../clang/lib/Sema/SemaStmtAttr.cpp:677:30: warning: enumerated mismatch in conditional expression: ‘clang::diag::<unnamed enum>’ vs ‘clang::diag::<unnamed enum>’ [-Wenum-compare]
676 | S.Diag(A.getLoc(), A.isRegularKeywordAttribute()
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
677 | ? diag::err_keyword_not_supported_on_targe
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
678 | : diag::warn_unhandled_ms_attribute_ignore )
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
These enums are non-overlapping, but due they are defined in different
enum scopes due to how they are generated with tablegen.
[mlir][ArithToAMDGPU] limit scaling truncf/extf support to gfx950 (#155431)
The current chip guard fails to prevent scaling_extf/truncf patterns
from being applied on gfx1100 which does not have scaling support.
---------
Signed-off-by: Muzammiluddin Syed <muzasyed at amd.com>
