[gcc(refs/vendors/redhat/heads/gcc-8-branch)] aarch64: Fix another bug in aarch64_add_offset_1 [PR94121]

[Jakub Jelinek]

https://gcc.gnu.org/g:701d28c8f4d9694c683d617a1d2ba0985b7d92ac

commit 701d28c8f4d9694c683d617a1d2ba0985b7d92ac
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Mar 13 11:33:16 2020 +0100

    aarch64: Fix another bug in aarch64_add_offset_1 [PR94121]
    
    > 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.
    
    2020-03-13  Jakub Jelinek  <jakub@redhat.com>
    
            PR target/94121
            * config/aarch64/aarch64.c (aarch64_add_offset_1): Use gen_int_mode
            instead of GEN_INT.
    
    (cherry picked from commit c2f836c413b1e9ae45598338b4a2ecd33bd926fb)

Diff:
---
 gcc/config/aarch64/aarch64.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index 7e16b6c59c3..e20a4ccc6dc 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -2585,7 +2585,8 @@ aarch64_add_offset_1 (scalar_int_mode mode, rtx dest,
   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)