re PR debug/83585 (Assembler messages: Error: can't resolve `.text' {.text…

re PR debug/83585 (Assembler messages: Error: can't resolve `.text' {.text section} - `.LCOLDB0' {.text.unlikely section})

	PR debug/83585
	* bb-reorder.c (insert_section_boundary_note): Set has_bb_partition
	to switched_sections.

	* gcc.dg/pr83585.c: New test.

From-SVN: r256256

gcc/ChangeLog

+2018-01-04  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/83585
+	* bb-reorder.c (insert_section_boundary_note): Set has_bb_partition
+	to switched_sections.
+
 2018-01-04  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	PR target/83680

gcc/bb-reorder.c

@@ -2523,6 +2523,11 @@ insert_section_boundary_note (void)
           current_partition = BB_PARTITION (bb);
 	}
     }
+
+  /* Make sure crtl->has_bb_partition matches reality even if bbpart finds
+     some hot and some cold basic blocks, but later one of those kinds is
+     optimized away.  */
+  crtl->has_bb_partition = switched_sections;
 }
 
 namespace {

gcc/testsuite/ChangeLog

+2018-01-04  Jakub Jelinek  <jakub@redhat.com>
+
+	PR debug/83585
+	* gcc.dg/pr83585.c: New test.
+
 2018-01-04  Nathan Sidwell  <nathan@acm.org>
 
 	PR c++/83667

gcc/testsuite/gcc.dg/pr83585.c

+/* PR debug/83585 */
+/* { dg-do assemble } */
+/* { dg-options "-std=gnu89 -O2 -g -fno-tree-dce -fno-guess-branch-probability" } */
+
+int
+foo (int x)
+{
+  int a, b;
+  for (a = 0; a < 2; ++a)
+    if (x != 0)
+      {
+        for (b = 0; b < 2; ++b)
+          ;
+        return 0;
+      }
+
+  return;
+}