Robuta

https://mail-archive.com/gcc-bugs@gcc.gnu.org/msg864625.html
bugmiddleendcanonicalizecomparison
https://www.mail-archive.com/gcc-bugs@gcc.gnu.org/msg886067.html
bugmiddleendregressionice
https://mail-archive.com/qemu-devel@nongnu.org/msg1088914.html
patchacceltcgcalltb
https://www.mail-archive.com/gcc-bugs@gcc.gnu.org/msg864379.html
bugcillegalinsnrun
https://www.mail-archive.com/gcc-bugs@gcc.gnu.org/msg864386.html
bugcillegalinsnrun
https://www.mail-archive.com/gcc-bugs@gcc.gnu.org/msg708383.html
bugtreeoptimizationnewregression
https://www.mail-archive.com/search?l=gcc-bugs@gcc.gnu.org&q=subject:%22%5C%5BBug+c%5C%2B%5C%2B%5C%2F120362%5C%5D+%5C%5BGCC%5C-15.1%5C%5D+Illegal+Insn+when+run+spec2017+511+ref+size%22&o=newest&f=1
subjectbuggccillegalinsn
https://mail-archive.com/gcc-bugs@gcc.gnu.org/msg874687.html
bugtargeticeinsnconst