diff --git a/gcc/testsuite/gcc.dg/pr112887.c b/gcc/testsuite/gcc.dg/pr112887.c
new file mode 100644
index 00000000000..41f5cc8cadf
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr112887.c
@@ -0,0 +1,13 @@
+/* PR tree-optimization/112887 */
+/* { dg-do compile } */
+/* { dg-options "-O2 --param=l1-cache-line-size=0x20000000" } */
+
+void bar (long);
+long c;
+struct S { long a, b; } s;
+
+void
+foo (void)
+{
+  bar (c ? s.a : s.b);
+}
diff --git a/gcc/tree-ssa-phiopt.cc b/gcc/tree-ssa-phiopt.cc
index ac805173453..a3b660bb18a 100644
--- a/gcc/tree-ssa-phiopt.cc
+++ b/gcc/tree-ssa-phiopt.cc
@@ -3757,8 +3757,8 @@ static void
 hoist_adjacent_loads (basic_block bb0, basic_block bb1,
 		      basic_block bb2, basic_block bb3)
 {
-  int param_align = param_l1_cache_line_size;
-  unsigned param_align_bits = (unsigned) (param_align * BITS_PER_UNIT);
+  unsigned HOST_WIDE_INT param_align = param_l1_cache_line_size;
+  unsigned HOST_WIDE_INT param_align_bits = param_align * BITS_PER_UNIT;
   gphi_iterator gsi;
 
   /* Walk the phis in bb3 looking for an opportunity.  We are looking
@@ -3770,8 +3770,7 @@ hoist_adjacent_loads (basic_block bb0, basic_block bb1,
       gimple *def1, *def2;
       tree arg1, arg2, ref1, ref2, field1, field2;
       tree tree_offset1, tree_offset2, tree_size2, next;
-      int offset1, offset2, size2;
-      unsigned align1;
+      unsigned HOST_WIDE_INT offset1, offset2, size2, align1;
       gimple_stmt_iterator gsi2;
       basic_block bb_for_def1, bb_for_def2;