Hello. The selftest progs/verifier_masking.c contains inline assembly code like: w1 = 0xffffffff; The 32-bit immediate of that instruction is signed. Therefore, GAS complains that the above instruction overflows its field: /tmp/ccNOXFQy.s:46: Error: signed immediate out of range, shall fit in 32 bits The llvm assembler is likely relying on signed overflow for the above to work. Using negative numbers to denote masks is ugly and obfuscating (for non-obvious cases like -1/0xffffffff) so I suggest we introduce a pseudo-op so we can do: w1 = %mask(0xffffffff) allowing the assembler to do the right thing (TM) converting and checking that the mask is valid and not relying on UB. Thoughts?
