re PR target/79058 (ARM: internal compiler error: in extract_constrain_insn, at recog.c:2213)

2017-01-17  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/79058
	* ira-conflicts.c (ira_build_conflicts): Update total conflict
	hard regs for inner regno.

2017-01-17  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/79058
	* gcc.target/arm/pr79058.c: New.

From-SVN: r244535

gcc/ChangeLog

+2017-01-17  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/79058
+	* ira-conflicts.c (ira_build_conflicts): Update total conflict
+	hard regs for inner regno.
+
 2017-01-17  Martin Liska  <mliska@suse.cz>
 
 	PR ipa/71207

gcc/ira-conflicts.c

@@ -787,8 +787,12 @@ ira_build_conflicts (void)
 		   if (outer_regno < 0
 		       || !in_hard_reg_set_p (reg_class_contents[aclass],
 					      outer_mode, outer_regno))
-		     SET_HARD_REG_BIT (OBJECT_CONFLICT_HARD_REGS (obj),
-				       inner_regno);
+		     {
+		       SET_HARD_REG_BIT (OBJECT_TOTAL_CONFLICT_HARD_REGS (obj),
+					 inner_regno);
+		       SET_HARD_REG_BIT (OBJECT_CONFLICT_HARD_REGS (obj),
+					 inner_regno);
+		     }
 		}
 	    }
 

gcc/testsuite/ChangeLog

+2017-01-17  Vladimir Makarov  <vmakarov@redhat.com>
+
+	PR target/79058
+	* gcc.target/arm/pr79058.c: New.
+
 2017-01-17  Jakub Jelinek  <jakub@redhat.com>
 
 	PR tree-optimization/71854

gcc/testsuite/gcc.target/arm/pr79058.c

+/* { dg-do compile } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" } { "-mcpu=arm7tdmi" } } */
+/* { dg-options "-Os -mbig-endian -mcpu=arm7tdmi" } */
+
+enum { NILFS_SEGMENT_USAGE_ACTIVE, NILFS_SEGMENT_USAGE_DIRTY } a;
+
+void fn2 (long long);
+
+void fn1() {
+  int b = a & 1 << NILFS_SEGMENT_USAGE_DIRTY;
+  fn2 (b ? (long long) -1 : 0);
+}