tree 7a4e1713a586b1b4261f105873b1bd7f01376dda
parent 010204594d97d7f20af4f49d3a65302e371b046f
author Jakub Jelinek <jakub@redhat.com> 1583228554 +0100
committer Jakub Jelinek <jakub@redhat.com> 1583228837 +0100

explow: Fix ICE caused by plus_constant [PR94002]

The following testcase ICEs in cross to riscv64-linux.  The problem is
that we have a DImode integral constant (that doesn't fit into SImode),
which is pushed into a constant pool and later access just the first half of
it using a MEM.  When plus_constant is called on such a MEM, if the constant
has mode, we verify the mode, but if it doesn't, we don't and ICE later on
when we think the CONST_INT is a valid SImode constant.

2020-03-03  Jakub Jelinek  <jakub@redhat.com>

	PR rtl-optimization/94002
	* explow.c (plus_constant): Punt if cst has VOIDmode and
	get_pool_mode is different from mode.

	* gcc.dg/pr94002.c: New test.