https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113622
--- Comment #3 from Xi Ruoyao <xry111 at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #2) > x86_64 Testcase (which invokes undefined behavior) which has been failing > since at least 4.9.1 even: > ``` > typedef double __attribute__ ((vector_size (16))) vec; > register vec a asm("ymm2"), b asm("ymm0"), c asm("ymm1"); > > void > test (void) > { > for (int i = 0; i < 4; i++) > c[i] = a[i] < b[i] ? 0.1 : 0.2; > } > ``` Phew. Then maybe I should refactor the LoongArch test cases to avoid using named registers...