[ORC] Drive LLJIT dlopen/dlupdate/dlclose via proxies (#224881)
Add Dlfcn proxies (Dlfcn.h), their SPS specs (DlfcnSPS.h) and CI
descriptors (DlfcnSPSCI.h), and route ORCPlatformSupport's three
callSPSWrapper sites through them via recordProxy.
[clang][bytecode] Add a special opcode for trivial default initializers (#224839)
Trivial default initializers from modules are not implicitly defined in
the AST, so we would diagnose the attached test case as an undefined
constructor. Do what the current interpreter does and special-case this.
Fixes https://github.com/llvm/llvm-project/issues/221400
[SelectionDAG] Handle constants in SimplifyMultipleUseDemandedBits
Replace a non-zero constant with zero when none of its set bits are
demanded.
This allows users of `SimplifyMultipleUseDemandedBits` to eliminate
irrelevant constant bits while preserving the convention that a null
SDValue indicates no simplification.
[SelectionDAG][AMDGPU] Fold mul24 with an AND operand whose low bits are zero
Use SimplifyMultipleUseDemandedBits to simplify AND operands based on the
low 24 bits consumed by mul24.
Fold the multiply to zero when the simplified operand is zero.
This folds cases such as:
mul24(x & 0xff000000, y) -> 0
[lldb/test] Skip test_scripted_process_addressable_bits on Windows (#224878)
This test is the first one in its directory to reach `self.build()` on
Windows, where the Makefile only knows how to build a dylib, so linking
the test binary fails on an undefined `baz` symbol.
Signed-off-by: Med Ismail Bennani <ismail at bennani.ma>
[Clang][CodeGen] Fix crash in EmitParmDecl for bodyless destructors with -fextend-variable-liveness (#218830)
The fake-use coroutine check in EmitParmDecl calls
FnDecl->getBody()->getStmtClass() without guarding against a null
getBody(). This crashes when processing implicit parameters (e.g.
should_call_delete) of MSVC deleting destructors whose base destructor
is only declared, not defined.
[RISCV][XQCI] Add a test that shows getInstSizeInBytes returning an incorrect instruction size. NFC (#224787)
Follow up to https://github.com/llvm/llvm-project/pull/223913 that shows
`getInstSizeInBytes` returning an incorrect instruction size of 2 when
the 6 byte `Xqci` instruction compresses to a 4 byte instruction.
An AI agent assisted in the generation of the test.
[CodeGen] Reject undef tied use sharing a virtual register with another read (#222832)
A virtual use operand, tied to a def of a different register, sharing
the register with another read, carries obligation that is hard to
follow by passes. For example, twoaddressinstruction would use different
physical registers, breaking the expectation of the `IsUndef` flag:
```
define void @f() {
%y = freeze i32 undef
%m = mul i32 %y, %y
call void asm sideeffect "# use $0", "{cx}"(i32 %m)
ret void
}
%2 = IMUL32rr undef %1(tied-def 0), undef %1 ; before twoaddressinstruction
%2 = IMUL32rr undef %2(tied-def 0), undef %1 ; after
imull %eax, %ecx ; different regs
```
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[AMDGPU] Add LDS encoding granularity to TargetParser
Model LDS encoding granularity with dedicated features and expose the
byte-valued getLDSEncodingGranule query for GPUKind and subarch. Keep
encoding independent of the hardware allocation granularity used for
occupancy; GFX10.3, GFX11 and GFX12.0 encode in 512-byte units while
allocating 1024-byte blocks.
Migrate program resource register and PAL metadata encoding to the new
query and remove getLdsDwGranularity from AMDGPUBaseInfo. gfx9-4-generic
uses gfx950's 1280-byte encoding granule independently of LDS capacity.
Test encoding queries, feature membership, generic-target validation and
encoded LDS sizes, including the GFX10.3 allocation/encoding distinction.
Change-Id: I9d3c2c041605e9a45fa8fbda09fc3460a74953ea
[WebKit Checkers][NFC] Thread the sink type through the local vars checker (#224862)
So an upcoming borrow checker can track assignment through indirection.
For example, in `out = &vec`, where `out`'s declared type is
`Vector<char>*&`, the relevant sink type is `Vector<char>*`.
Assisted-by: Claude
