https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113495
Patrick O'Neill <patrick at rivosinc dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |patrick at rivosinc dot com --- Comment #7 from Patrick O'Neill <patrick at rivosinc dot com> --- I believe the memory hog is caused by this: https://gcc.gnu.org/git/?p=gcc.git;a=blob;f=gcc/config/riscv/riscv-vsetvl.cc;h=2067073185f8c0f398908b164a99b592948e6d2d;hb=565935f93a7da629da89b05812a3e8c43287598f#l2427 In the slightly reduced test program I was using to debug there were ~35k bb's leading to num_expr being roughly 1 million. vsetvl then makes 35k bitmaps of ~1 million bits.