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authorFrancisco Jerez <[email protected]>2018-11-08 14:03:24 -0800
committerFrancisco Jerez <[email protected]>2018-11-09 19:39:22 -0800
commit552642066f511960c7fa7c0fdf1bf733982fc1c9 (patch)
tree33588a98cbd1c309914f46dcc8f73e2900c9fec1 /src/compiler
parent590fcb50e745a2d8a62dafa157f06d2bb7c590dc (diff)
intel/fs: Prevent emission of IR instructions not aligned to their own execution size.
This can occur during payload setup of SIMD-split send message instructions, which can lead to the emission of header setup instructions with a non-zero channel group and fixed SIMD width. Such instructions could end up using undefined channel enable signals except they don't care since they're always marked force_writemask_all. Not known to affect correctness of any workload at this point, but it would be trivial to back-port to stable if something comes up. Reported-by: Sagar Ghuge <[email protected]> Reviewed-by: Matt Turner <[email protected]> Tested-by: Sagar Ghuge <[email protected]>
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