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What’s wrong with the compiler Rust already has
LLVM supports fewer target machines than GCC
https://gcc.gnu.org/backends.html has a big table
| Characteristics Target | HMSLQNFICBD lqrpbfmgiates -----------+-------------------------- aarch64 | Q q b gia s alpha | ? Q C q mgi e arc | B b gia arm | b ia s avr | L FI l p g bfin | F gi c6x | S CB gi cr16 | L F C g s cris | F B gi s csky | b ia epiphany | C gi s fr30 | ?? FI B pb mg s frv | ?? B b i s gcn | S C D q a e h8300 | FI B g s i386 | Q q b ia ia64 | ? Q C qr b m i iq2000 | ??? FICB b g t lm32 | F g m32c | L FI l b g s m32r | FI b s m68k | pb i mcore | ? FI pb mg s mep | F C b g t s microblaze | CB i s mips | Q CB qr ia s mmix | HM Q C q i e mn10300 | ?? gi s moxie | F g t s msp430 | L FI l b g s nds32 | F C ia s nios2 | C ia nvptx | S Q C q mg e pa | Q CBD qr b i e pdp11 | L IC qr b e pru | L F a s riscv | Q C qr gia rl78 | L F l g s rs6000 | Q C qrpb ia rx | s s390 | Q qr gia e sh | Q CB qrp i sparc | Q CB qr b ia stormy16 | ???L FIC D l b i tilegx | Q C q gi e tilepro | S F C gi e v850 | g a s vax | M I b i e visium | B g t s xtensa | Chttps://www.llvm.org/Features.html
An easily retargettable code generator, which currently supports X86, X86-64, PowerPC, PowerPC-64, ARM, Thumb, SPARC, Alpha, CellSPU, MIPS, MSP430, SystemZ, WebAssembly and XCore.
It’s also good to have multiple compilers to exercise the spec.
