https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120278
--- Comment #8 from Ken Young <selectstriker2 at protonmail dot com> --- It seems to me that even if a naive decision tree is to be generated, it could be done in a manner that simply checks for the case being equal and not do anything with greater than From: .L9: cmpl $4, -4(%rbp) je .L2 cmpl $4, -4(%rbp) jg .L3 cmpl $3, -4(%rbp) je .L4 cmpl $3, -4(%rbp) jg .L3 - already checked for ==4, >4, ==3 so >3 will always be false cmpl $2, -4(%rbp) je .L5 cmpl $2, -4(%rbp) jg .L3 - already checked for ==4, >4, ==3, ==2 so >2 will always be false cmpl $0, -4(%rbp) je .L6 cmpl $1, -4(%rbp) je .L7 jmp .L3 To: .L9: cmpl $4, -4(%rbp) je .L2 cmpl $3, -4(%rbp) je .L4 cmpl $2, -4(%rbp) je .L5 cmpl $0, -4(%rbp) je .L6 cmpl $1, -4(%rbp) je .L7 jmp .L3
