Jonathan Brouwer
1af198e67c
Fix Hexagon ABI calling convention for small aggregates Small structs (<= 64 bits) were being passed with their fields split into separate arguments instead of being packed into register-sized chunks. This caused ABI mismatches. The fix properly casts small aggregates to consecutive register-sized chunks using Uniform::consecutive(), matching the Hexagon C ABI where small structs are packed into R1:0 register pair. This fixes tests like extern-pass-TwoU16s.rs and extern-pass-TwoU8s.rs.
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