[Bug tree-optimization/104112] [12 Regression] ICE with -Ofast -march=armv8.2-a+sve -msve-vector-bits=512 since r12-2292-g1dd3f21095858fbfd3e28a149578d5fb67e75f95

[rguenth at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104112

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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  Attachment #52230|0                           |1
        is obsolete|                            |

--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 52232
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=52232&action=edit
adjusted patch

This also tests for availability of the reduction operation in the intermediate
mode which avoids V4HI vector adds on !TARGET_MMX_WITH_SSE as those are later
decomposed by vector lowering.