re PR target/50739 ([avr] nameless error with -fmerge-all-constants)

Fix PR target/50739

This patch fixes a problem with fmerge-all-constants and the progmem
attribute.

gcc/

	PR target/50739	
	* config/avr/avr.c (avr_asm_select_section): Strip off
	SECTION_DECLARED from flags when calling get_section.

testsuite/

	PR target/50739	
	* gcc.target/avr/pr50739.c: New test

From-SVN: r238041

gcc/ChangeLog

+2016-07-06  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>
+
+	PR target/50739	
+	* config/avr/avr.c (avr_asm_select_section): Strip off
+	SECTION_DECLARED from flags when calling get_section.
+
 2016-07-06  Richard Sandiford  <richard.sandiford@arm.com>
 
 	* tree-vectorizer.h (vect_memory_access_type): Add

gcc/config/avr/avr.c

@@ -9641,7 +9641,9 @@ avr_asm_select_section (tree decl, int reloc, unsigned HOST_WIDE_INT align)
             {
               const char *sname = ACONCAT ((new_prefix,
                                             name + strlen (old_prefix), NULL));
-              return get_section (sname, sect->common.flags, sect->named.decl);
+              return get_section (sname,
+                                  sect->common.flags & ~SECTION_DECLARED,
+                                  sect->named.decl);
             }
         }
 

gcc/testsuite/ChangeLog

+2016-07-06  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>
+
+	PR target/50739	
+	* gcc.target/avr/pr50739.c: New test.
+
 2016-07-05  Jan Hubicka  <jh@suse.cz>
 
 	* gcc.dg/tree-ssa/scev-14.c: update template.

gcc/testsuite/gcc.target/avr/pr50739.c

+/* { dg-do compile } */
+/* { dg-options "-fmerge-all-constants" } */
+
+char *ca = "123";
+
+const char a[] __attribute__((__progmem__))= "a";
+const char b[] __attribute__((__progmem__))= "b";