On 10/31/19 5:41 PM, Jim Wilson wrote: > The RISC-V backend wants to use a libcall when optimizing for size if > more than 6 instructions are needed. Emit_move_complex asks for no > libcalls. This case requires 8 insns for rv64 and 16 insns for rv32, > so we get fallback code that emits a loop. Commit_one_edge_insertion > doesn't allow code inserted for a phi node on an edge to end with a > branch, and so this triggers an assertion. This problem goes away if > we allow libcalls when optimizing for size, which gives the code the > RISC-V backend wants, and avoids triggering the assert. > > gcc/ > PR middle-end/92263 > * expr.c (emit_move_complex): Only use BLOCK_OP_NO_LIBCALL when > optimize_insn_for_speed_p is true. > > gcc/testsuite/ > PR middle-end/92263 > * gcc.dg/pr92263.c: New. OK.
jeff
