On Tue, 2025-05-20 at 15:44 +0200, Jakub Jelinek wrote: > > Specifically, the tests told me to extend (thought "truncate" > > was kind of an equivalent word) the output of left shift, plus/minus, > > Truncation is the exact opposite of extension. > I can understand the need for handling of left shifts, for all the rest > I'd really like to see testcases.
I guess the terminology thing is caused by the past experience of the Loongson team with "a famous !TARGET_TRULY_NOOP_TRUNCATION target." On that target truncsidi2 is a sign-extension as required by the ISA spec. I'm trying to fix an ext-dce bug regarding !TARGET_TRULY_NOOP_TRUNCATION so I just decided to chime in and explain this :). -- Xi Ruoyao <xry...@xry111.site> School of Aerospace Science and Technology, Xidian University
