main
Fix ISPC build with LLVM 18.1 and trunk
llvm_patches: backport LLVM patch 6f68d039a5bdf11f6d7c84bed8d5a0da5950daef
Backport patch for InstCombine to fix #2954
Skip applying the patch that is already in 19.1.7
Apply LLVM patches for 21.1
Backport LLVM FullUnroll fix and add LIT test
Add llvm patch limiting the canonicalization
Add patches for LLVM 20
Add LLVM 21 patch for the issue with fp16 type on wasm target