From: Jakub Jelinek <jakub@redhat.com>
Date: Wed, 4 Jan 2017 20:03:59 +0000 (+0100)
Subject: dwarf2out.c (output_loc_list): Don't throw away 64K+ location descriptions for -gdwar... 
X-Git-Tag: basepoints/gcc-8~2030
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=fb85f9d05f09a3e122d702f85b8af306a3999357;p=thirdparty%2Fgcc.git

dwarf2out.c (output_loc_list): Don't throw away 64K+ location descriptions for -gdwarf-5 and emit them as...

	* dwarf2out.c (output_loc_list): Don't throw away 64K+ location
	descriptions for -gdwarf-5 and emit them as uleb128 instead of
	2-byte data.

From-SVN: r244069
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5568ec6c1a46..242bf697bc45 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-01-04  Jakub Jelinek  <jakub@redhat.com>
+
+	* dwarf2out.c (output_loc_list): Don't throw away 64K+ location
+	descriptions for -gdwarf-5 and emit them as uleb128 instead of
+	2-byte data.
+
 2017-01-04  Kelvin Nilsen  <kelvin@gcc.gnu.org>
 
 	PR target/78056
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c
index 15b9a30a3072..8abeb7abf657 100644
--- a/gcc/dwarf2out.c
+++ b/gcc/dwarf2out.c
@@ -9586,7 +9586,7 @@ output_loc_list (dw_loc_list_ref list_head)
 	 perhaps put it into DW_TAG_dwarf_procedure and refer to that
 	 in the expression, but >= 64KB expressions for a single value
 	 in a single range are unlikely very useful.  */
-      if (size > 0xffff)
+      if (dwarf_version < 5 && size > 0xffff)
 	continue;
       if (dwarf_version >= 5)
 	{
@@ -9638,8 +9638,6 @@ output_loc_list (dw_loc_list_ref list_head)
 		      if (strcmp (curr2->begin, curr2->end) == 0
 			  && !curr2->force)
 			continue;
-		      if ((unsigned long) size_of_locs (curr2->expr) > 0xffff)
-			continue;
 		      break;
 		    }
 		  if (curr2 == NULL || curr->section != curr2->section)
@@ -9740,8 +9738,13 @@ output_loc_list (dw_loc_list_ref list_head)
 	}
 
       /* Output the block length for this list of location operations.  */
-      gcc_assert (size <= 0xffff);
-      dw2_asm_output_data (2, size, "%s", "Location expression size");
+      if (dwarf_version >= 5)
+	dw2_asm_output_data_uleb128 (size, "Location expression size");
+      else
+	{
+	  gcc_assert (size <= 0xffff);
+	  dw2_asm_output_data (2, size, "Location expression size");
+	}
 
       output_loc_sequence (curr->expr, -1);
     }