ping~
thanks.
Regards,
Jiong
On 17/10/14 13:04, Jiong Wang wrote:
the cause should be one minor bug in prepare_cmp_insn.
the last mode parameter "pmode" of "prepare_cmp_insn" should match the
mode of the first parameter "x", while during the recursive call of
"prepare_cmp_insn",
x is with mode of targetm.libgcc_cmp_return_mode () and pmode is assign to
word_mode.
generally this is OK, because default libgcc_cmp_return_mode hook always return
word_mode,
but AArch64 has a target private implementation which always return SImode, so
there is a
mismatch which cause a ICE later.
this minor issue is hidding because nearly all other targets use default hook,
and the
compare is rarely invoked.
Thanks
gcc/
PR target/63442
* optabs.c (prepare_cmp_insn): Use target hook "libgcc_cmp_return_mode"
instead of word_mode.
