src/os_cpu/linux_x86/vm/copy_linux_x86.inline.hpp

rev 9088 : 8139040: Fix initializations before ShouldNotReachHere() etc. and enable -Wuninitialized on linux.

*** 28,38 ****
  static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
  #ifdef AMD64
    (void)memmove(to, from, count * HeapWordSize);
  #else
    // Includes a zero-count check.
!   intx temp;
    __asm__ volatile("        testl   %6,%6         ;"
                     "        jz      7f            ;"
                     "        cmpl    %4,%5         ;"
                     "        leal    -4(%4,%6,4),%3;"
                     "        jbe     1f            ;"
--- 28,38 ----
  static void pd_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
  #ifdef AMD64
    (void)memmove(to, from, count * HeapWordSize);
  #else
    // Includes a zero-count check.
!   intx temp = 0;
    __asm__ volatile("        testl   %6,%6         ;"
                     "        jz      7f            ;"
                     "        cmpl    %4,%5         ;"
                     "        leal    -4(%4,%6,4),%3;"
                     "        jbe     1f            ;"
*** 86,96 ****
      (void)memcpy(to, from, count * HeapWordSize);
      break;
    }
  #else
    // Includes a zero-count check.
!   intx temp;
    __asm__ volatile("        testl   %6,%6       ;"
                     "        jz      3f          ;"
                     "        cmpl    $32,%6      ;"
                     "        ja      2f          ;"
                     "        subl    %4,%1       ;"
--- 86,96 ----
      (void)memcpy(to, from, count * HeapWordSize);
      break;
    }
  #else
    // Includes a zero-count check.
!   intx temp = 0;
    __asm__ volatile("        testl   %6,%6       ;"
                     "        jz      3f          ;"
                     "        cmpl    $32,%6      ;"
                     "        ja      2f          ;"
                     "        subl    %4,%1       ;"
*** 143,153 ****
  static void pd_conjoint_bytes(void* from, void* to, size_t count) {
  #ifdef AMD64
    (void)memmove(to, from, count);
  #else
    // Includes a zero-count check.
!   intx temp;
    __asm__ volatile("        testl   %6,%6          ;"
                     "        jz      13f            ;"
                     "        cmpl    %4,%5          ;"
                     "        leal    -1(%4,%6),%3   ;"
                     "        jbe     1f             ;"
--- 143,153 ----
  static void pd_conjoint_bytes(void* from, void* to, size_t count) {
  #ifdef AMD64
    (void)memmove(to, from, count);
  #else
    // Includes a zero-count check.
!   intx temp = 0;
    __asm__ volatile("        testl   %6,%6          ;"
                     "        jz      13f            ;"
                     "        cmpl    %4,%5          ;"
                     "        leal    -1(%4,%6),%3   ;"
                     "        jbe     1f             ;"