6773838: There is no calling stack for Compiler thread in hs_err file on x86

On solaris, the inline assembly wasn't being processed.  Added volatile to il file fixed it.

Reviewed-by: phh, kvn

hotspot/src/os_cpu/solaris_x86/vm/os_solaris_x86.cpp

@@ -203,10 +203,10 @@ frame os::get_sender_for_C_frame(frame* fr) {
   return frame(fr->sender_sp(), fr->link(), fr->sender_pc());
 }
 
-extern "C" intptr_t *_get_previous_fp();  // in .il file.
+extern "C" intptr_t *_get_current_fp();  // in .il file
 
 frame os::current_frame() {
-  intptr_t* fp = _get_previous_fp();
+  intptr_t* fp = _get_current_fp();  // it's inlined so want current fp
   frame myframe((intptr_t*)os::current_stack_pointer(),
                 (intptr_t*)fp,
                 CAST_FROM_FN_PTR(address, os::current_frame));

hotspot/src/os_cpu/solaris_x86/vm/solaris_x86_32.il

@@ -37,10 +37,10 @@
       movl     %gs:0, %eax 
       .end
 
-  // Get callers fp
-      .inline _get_previous_fp,0
+  // Get current fp
+      .inline _get_current_fp,0
+      .volatile
       movl     %ebp, %eax 
-      movl     %eax, %eax
       .end
 
   // Support for jint Atomic::add(jint inc, volatile jint* dest)

hotspot/src/os_cpu/solaris_x86/vm/solaris_x86_64.il

@@ -30,10 +30,10 @@
       movq     %fs:0, %rax 
       .end
 
-  // Get the frame pointer from previous frame.
-      .inline _get_previous_fp,0
+  // Get the frame pointer from current frame.
+      .inline _get_current_fp,0
+      .volatile
       movq     %rbp, %rax 
-      movq     %rax, %rax 
       .end
 
   // Support for jint Atomic::add(jint add_value, volatile jint* dest)