hot/cold vs glibc

[Daniel Jacobowitz]

Hi Caroline,

You've made this change to assemble_start_function (unidiff format):

+  last_text_section = no_section;
+  in_section = no_section;
   resolve_unique_section (decl, 0, flag_function_sections);
+
+  /* Switch to the correct text section for the start of the function.  */
+
   function_section (decl);
+  if (flag_reorder_blocks_and_partition 
+      && !hot_label_written)
+    ASM_OUTPUT_LABEL (asm_out_file, hot_section_label);

Why did you need to reset in_section?  This causes an extra .text to be
emitted before every function.  It also breaks the (ugly, non-unit-at-a-time
compatible, but otherwise working) mechanism that glibc uses to generate
crti.o and crtn.o, so I can no longer build a mips64-linux toolchain using
HEAD.

-- 
Daniel Jacobowitz
CodeSourcery, LLC