[LVI] Use block numbers (#188270)
Store the cache as a vector indexed by block numbers instead of a map,
which results in a small compile-time improvement.
[LIBM][AMDLIBM] - New vector calls for cdfnorm and round scalar calls (#187232)
In amdlibm, new vector calls
cdfnorm
amd_vrd2_cdfnorm
amd_vrd4_cdfnorm
amd_vrd8_cdfnorm
round
amd_vrs16_roundf
amd_vrs8_roundf
amd_vrs4_roundf
amd_vrd8_round
amd_vrd4_round
amd_vrd2_round
Link to aocl repo -
[aocl-libm-ose](https://github.com/amd/aocl-libm-ose)
[VPlan] Remove isVector guard in getCostForRecipeWithOpcode. (#188126)
The legacy cost model computes and passes RHSInfo both when widening and
replicating. Match behavior in VPlan-based cost model.
The added test shows that we now compute the same cost as the legacy
cost model.
Without this change, the test added in
llvm/test/Transforms/LoopVectorize/AArch64/predicated-costs.ll would
crash with https://github.com/llvm/llvm-project/pull/187056.
PR: https://github.com/llvm/llvm-project/pull/188126
[analyzer] Untangle subcheckers of CStringChecker (#186802)
It turns out, that some checks for cstring functions happened as a side
effect of other checks. For example, whether the arguments to memcpy
were uninitialized happened during buffer overflow checking.
The way this was implemented is that if alpha.unix.cstring.OutOfBounds
was disabled, alpha.unix.cstring.UninitializedRead couldn't emit any
warnings. It turns out that major modeling steps are early-exited if a
certain checker is disabled!
This patch moved the early returns to the report emission parts --
modeling still happens, only the bug report construction is omitted.
This would mean that if we find a fatal error (like buffer overflow) we
_should_ stop analysis even if we don't emit a warning (thats a part of
doing modeling), but I decided against implementing that.
One hurdle is that CStringChecker is a dependency of MallocChecker, and
the current tests rely on the CStringChecker _not_ terminating execution
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[libc] Fix unused variable warning in utimes.cpp (#188347) (#188448)
Moved the declaration of 'ret' inside the SYS_utimes block to prevent an
unused variable warning on the libc-riscv32-qemu-yocto-fullbuild-dbg
builder, which doesn't define SYS_utimes.
[DA] Fix overflow of calculation in weakCrossingSIVtest
This patch fixes a correctness issue where integer overflow in the
upper bound calculation of weakCrossingSIVtest caused the pass to
incorrectly prove independence.
The previous logic used `SCEV::getMulExpr` to calculate
`2 * ConstCoeff * UpperBound` and compared it to `Delta` using
`isKnownPredicate`. In the presence of overflow, this could yield
unsafe results.
This change replaces the SCEV arithmetic with `ConstantRange` and
its operation (`smul_fast`). If the calculation overflows,
`intersectWith(MLRange).isEmptySet()` would be false, ensures we
conservatively assume a dependence if the bounds cannot be proven
safe.
Signed-off-by: Ruoyu Qiu <cabbaken at outlook.com>
[LVI] Remove unused DL member (NFC)
This is never used (the data layout is taken later from the
module instead) and not even initialized in the legacy PM code path.
[LVI] Store function in LVI wrapper class
We know the function we're working on at construction, there is
no need to have code to fetch the module in every place that
fetches the Impl object.
I'm storing the function instead of the module to be able to get
the block number epoch in a future change.
[CIR][RISCV][NFC] Add CIRGenBuiltinRISCV file to support RISCV builtins codegen (#186050)
This PR adds CIRGenBuiltinRISCV.cpp file for RISCV specific builtins
codegen support.
List all builtins except vector builtins which need tablegen, and mark
them as "NYI".
