clang: Upgrade to 20.1.1

[kraj]

• 424c2d9b7e4d [libcxx] Add a missing include for __bit_iterator (#127015)
• 2cc53628fbe8 [SCEV] Check whether the start is non-zero in ScalarEvolution::howFarToZero (#131522)
• 0619bbcbbd86 [BPF] Add default cpu change in ReleaseNotes (#131691)
• 2dc152fb40db fix abi (again)
• 2044b18af046 fix abi
• e3f0ce3ef803 [Clang] Do not emit nodiscard warnings for the base expr of static member access (#131450)
• 0ceb4efefeaa [CUDA][HIP] fix virtual dtor host/device attr (#128926)
• 1058e693f090 [libc++][test] Skip a is_virtual_base_of test for apple-clang-17 (#131438)
• 1f9d00524b8c [libc++] Forward-proof some tests for AppleClang 17
• 1515c4ac202d [LAA] Consider accessed addrspace when mapping underlying obj to access. (#129087)
• 1cfbb9f33436 Backport/20.x: [Clang] Fix an incorrect assumption on getTemplatedDecl()
• 0fcfeacd8b99 [BPF] Fix BitCast Assertion with NonZero AddrSpace
• 0b23d98dceaa Reduce memory usage in AST parent map generation by lazily checking if nodes have been seen (#129934)
• 073ae08864b4 AMDGPU: Fix broken broken negative test for gfx950 assembler (#129667) (#129686)
• cb50aaf8a11b [llvm-objcopy] Apply encryptable offset to first segment, not section (#130517)
• 63e63f306128 [Clang] Fix an integer overflow issue in computing CTAD's parameter depth (#128704)
• b09b05b8e7c3 [MemCpyOpt] Fix clobber check in fca2memcpy optimization
• 64ae6413559e [SystemZ] Move disabling of arg verification to before isFullyInternal(). (#130693)
• 548d057ebcfa [VectorCombine] scalarizeLoadExtract - don't create scalar loads if any extract is waiting to be erased (#129375)
• 7c154dad4d15 [Clang] Fix GPU intrinsic helpers incorrectly sign extending (#129560)
• 946780474f3b [libc++][test] extend XFAIL clauses to cover Amazon Linux too (#129377)
• f09bcfbdc90b [LoongArch] Relax the restrictions of inlineasm operand modifier 'u' and 'w' (#129864)
• f62b50e0e8f1 [ValueTracking] Skip incoming values that are the same as the phi in isGuaranteedNotToBeUndefOrPoison (#130111)
• 50343e517992 [HEXAGON] Fix hvx-isel for extract_subvector op (#129672)
• 0412f708c380 [TailDuplicator] Do not restrict the computed gotos (#114990)
• 72c4a3f419f4 [clang][test] Don't require specific alignment in test case (#130589)
• fbb2a7e74d91 [clang] Reject constexpr-unknown values as constant expressions more consistently (#129952)
• 9010db1b84ef [Clang] Treat constexpr-unknown value as invalid in EvaluateAsInitializer (#128409)
• 32ce5b043c2b [AArch64] Fix BE popcount casts. (#129879)
• 05be3ca72e39 [AArch64] Add BE test coverage for popcount. NFC
• 0e96713a3b29 [ValueTracking] Bail out on x86_fp80 when computing fpclass with knownbits (#130477)
• 0fda7e633255 [X86][AVX10.2] Fix unexpected larger scope (#130767)
• f7a4e3a4d45d [clang-format] Don't remove parentheses separated from ellipsis by comma (#130471)
• 1d4d84c89be6 [AArch64] Don't try to custom lower fp16 selects with nofp (#129492)
• 0064565bce3f [DAGCombiner] Don't ignore N2's undef elements in foldVSelectOfConstants (#129272)
• 54c90e4cdf2f [lldb] Fix manual CURSES_LIBRARIES tinfo finding (#128245)
• 712d3c7f0944 [lldb] Add terminfo dependency for ncurses support (#126810)
• 6525b151fe77 [Hexagon] Handle Call Operand vxi1 in Hexagon Backend (#128027)
• dcc378e862de [libc++] Guard contents on _LIBCPP_HAS_LOCALIZATION (#129112)
• 0f5e7e86e38e [SystemZ] Add header guard macros to vecintrin.h (#129170)
• 5b552d780ae8 [LV][VPlan] Prevent calculate cost for skiped instructions in precomputeCosts(). (#127966)
• 20adce87104c [libc++][ci] Update the Windows toolchains to Clang 19 (#129232)
• 0e537474ea59 Bump version to 20.1.1 (#130806)

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[shr-project]

I'll double check what changed, but some builds are now failing with:

mv: cannot stat 'lib32-compiler-rt/20.1.1/image/usr/lib32/linux': No such file or directory

Will send a fix later.

[kraj]

I'll double check what changed, but some builds are now failing with:

mv: cannot stat 'lib32-compiler-rt/20.1.1/image/usr/lib32/linux': No such file or directory

Will send a fix later.

yes packaging has changed due to compiler-rt standalone build options have changed in 20.x