Sander de Smalen fe6ae81ef3 [InstCombine] Fix vscale zext/sext optimization when vscale_range is unbounded.
According to the LangRef, a (vscale_range) value of 0 means unbounded.

This patch additionally cleans up the test file vscale_sext_and_zext.ll.
2021-08-04 17:17:37 +01:00
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