[Bug middle-end/126775] [17 Regression] ICE: tree check: expected real_cst, have vector_cst in generic_simplify_MINUS_EXPR, at generic-match-6.cc:7470 with -ffinite-math-only since r17-3158

[zsojka at seznam dot cz via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126775

--- Comment #2 from Zdenek Sojka <zsojka at seznam dot cz> ---
I have also a testcase that fails with:

xxx.c:5:65: internal compiler error: tree check: expected real_cst, have
vector_cst in gimple_simplify_MINUS_EXPR, at gimple-match-6.cc:17531
    5 |       (__attribute__((__vector_size__(sizeof(float)))) float){} -
foo0_u16_0,

but so far I didn't reduce that into a valid testcase