On Thu, Mar 12, 2020 at 12:27:48PM +0100, Andreas Schwab wrote:
> I'm getting this ICE with -mabi=ilp32:
>
> during RTL pass: fwprop1
> /opt/gcc/gcc-20200312/gcc/testsuite/gcc.dg/pr94121.c: In function 'bar':
> /opt/gcc/gcc-20200312/gcc/testsuite/gcc.dg/pr94121.c:16:1: internal compiler
> error: in decompose, at rtl.h:2279
That is a preexisting issue, caused by another bug in the same function.
When mode is SImode and moffset is 0x80000000 (or anything else with the
bit 31 set), we need to sign-extend it.
Fixed thusly, ok for trunk if it passes bootstrap/regtest on aarch64-linux?
2020-03-12 Jakub Jelinek <ja...@redhat.com>
PR target/94121
* config/aarch64/aarch64.c (aarch64_add_offset_1): Use gen_int_mode
instead of GEN_INT.
--- gcc/config/aarch64/aarch64.c.jj 2020-03-12 15:05:20.610726090 +0100
+++ gcc/config/aarch64/aarch64.c 2020-03-12 15:18:35.390025244 +0100
@@ -3757,7 +3757,8 @@ aarch64_add_offset_1 (scalar_int_mode mo
if (emit_move_imm)
{
gcc_assert (temp1 != NULL_RTX || can_create_pseudo_p ());
- temp1 = aarch64_force_temporary (mode, temp1, GEN_INT (moffset));
+ temp1 = aarch64_force_temporary (mode, temp1,
+ gen_int_mode (moffset, mode));
}
insn = emit_insn (offset < 0
? gen_sub3_insn (dest, src, temp1)
Jakub
