diff --git a/gcc/config/i386/sync.md b/gcc/config/i386/sync.md
index c7c508c8de8..7913b918796 100644
--- a/gcc/config/i386/sync.md
+++ b/gcc/config/i386/sync.md
@@ -226,12 +226,13 @@
    (set (match_operand:DI 2 "memory_operand")
 	(unspec:DI [(match_dup 0)]
 		   UNSPEC_FIST_ATOMIC))
-   (set (match_operand:DF 3 "any_fp_register_operand")
+   (set (match_operand:DF 3 "sse_reg_operand")
 	(match_operand:DF 4 "memory_operand"))]
   "!TARGET_64BIT
    && peep2_reg_dead_p (2, operands[0])
    && rtx_equal_p (XEXP (operands[4], 0), XEXP (operands[2], 0))"
-  [(set (match_dup 3) (match_dup 5))]
+  [(set (match_dup 3) (match_dup 5))
+   (set (match_dup 4) (match_dup 3))]
   "operands[5] = gen_lowpart (DFmode, operands[1]);")
 
 (define_peephole2
@@ -243,7 +244,7 @@
 		   UNSPEC_FIST_ATOMIC))
    (set (mem:BLK (scratch:SI))
 	(unspec:BLK [(mem:BLK (scratch:SI))] UNSPEC_MEMORY_BLOCKAGE))
-   (set (match_operand:DF 3 "any_fp_register_operand")
+   (set (match_operand:DF 3 "sse_reg_operand")
 	(match_operand:DF 4 "memory_operand"))]
   "!TARGET_64BIT
    && peep2_reg_dead_p (2, operands[0])
@@ -251,6 +252,7 @@
   [(const_int 0)]
 {
   emit_move_insn (operands[3], gen_lowpart (DFmode, operands[1]));
+  emit_move_insn (operands[4], operands[3]);
   emit_insn (gen_memory_blockage ());
   DONE;
 })
@@ -262,12 +264,13 @@
    (set (match_operand:DI 2 "memory_operand")
 	(unspec:DI [(match_dup 0)]
 		   UNSPEC_STX_ATOMIC))
-   (set (match_operand:DF 3 "any_fp_register_operand")
+   (set (match_operand:DF 3 "sse_reg_operand")
 	(match_operand:DF 4 "memory_operand"))]
   "!TARGET_64BIT
    && peep2_reg_dead_p (2, operands[0])
    && rtx_equal_p (XEXP (operands[4], 0), XEXP (operands[2], 0))"
-  [(set (match_dup 3) (match_dup 5))]
+  [(set (match_dup 3) (match_dup 5))
+   (set (match_dup 4) (match_dup 3))]
   "operands[5] = gen_lowpart (DFmode, operands[1]);")
 
 (define_peephole2
@@ -279,7 +282,7 @@
 		   UNSPEC_STX_ATOMIC))
    (set (mem:BLK (scratch:SI))
 	(unspec:BLK [(mem:BLK (scratch:SI))] UNSPEC_MEMORY_BLOCKAGE))
-   (set (match_operand:DF 3 "any_fp_register_operand")
+   (set (match_operand:DF 3 "sse_reg_operand")
 	(match_operand:DF 4 "memory_operand"))]
   "!TARGET_64BIT
    && peep2_reg_dead_p (2, operands[0])
@@ -287,6 +290,7 @@
   [(const_int 0)]
 {
   emit_move_insn (operands[3], gen_lowpart (DFmode, operands[1]));
+  emit_move_insn (operands[4], operands[3]);
   emit_insn (gen_memory_blockage ());
   DONE;
 })
@@ -392,7 +396,8 @@
   "!TARGET_64BIT
    && peep2_reg_dead_p (3, operands[2])
    && rtx_equal_p (XEXP (operands[0], 0), XEXP (operands[3], 0))"
-  [(set (match_dup 5) (match_dup 1))]
+  [(set (match_dup 0) (match_dup 1))
+   (set (match_dup 5) (match_dup 1))]
   "operands[5] = gen_lowpart (DFmode, operands[4]);")
 
 (define_peephole2
@@ -411,6 +416,7 @@
    && rtx_equal_p (XEXP (operands[0], 0), XEXP (operands[3], 0))"
   [(const_int 0)]
 {
+  emit_move_insn (operands[0], operands[1]);
   emit_insn (gen_memory_blockage ());
   emit_move_insn (gen_lowpart (DFmode, operands[4]), operands[1]);
   DONE;
@@ -428,7 +434,8 @@
   "!TARGET_64BIT
    && peep2_reg_dead_p (3, operands[2])
    && rtx_equal_p (XEXP (operands[0], 0), XEXP (operands[3], 0))"
-  [(set (match_dup 5) (match_dup 1))]
+  [(set (match_dup 0) (match_dup 1))
+   (set (match_dup 5) (match_dup 1))]
   "operands[5] = gen_lowpart (DFmode, operands[4]);")
 
 (define_peephole2
@@ -447,6 +454,7 @@
    && rtx_equal_p (XEXP (operands[0], 0), XEXP (operands[3], 0))"
   [(const_int 0)]
 {
+  emit_move_insn (operands[0], operands[1]);
   emit_insn (gen_memory_blockage ());
   emit_move_insn (gen_lowpart (DFmode, operands[4]), operands[1]);
   DONE;
diff --git a/gcc/testsuite/gcc.target/i386/pr100182.c b/gcc/testsuite/gcc.target/i386/pr100182.c
new file mode 100644
index 00000000000..2f92a04db73
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr100182.c
@@ -0,0 +1,30 @@
+/* { dg-do run { target ia32 } } */
+/* { dg-options "-O2 -march=i686" } */
+
+struct S { double _M_fp; };
+union U { double d; unsigned long long int l; };
+
+void
+__attribute__((noipa))
+foo (void)
+{
+  struct S a0, a1;
+  union U u;
+  double d0, d1;
+  a0._M_fp = 0.0;
+  a1._M_fp = 1.0;
+  __atomic_store_8 (&a0._M_fp, __atomic_load_8 (&a1._M_fp, __ATOMIC_SEQ_CST), __ATOMIC_SEQ_CST);
+  u.l = __atomic_load_8 (&a0._M_fp, __ATOMIC_SEQ_CST);
+  d0 = u.d;
+  u.l = __atomic_load_8 (&a1._M_fp, __ATOMIC_SEQ_CST);
+  d1 = u.d;
+  if (d0 != d1)
+    __builtin_abort ();
+}
+
+int
+main ()
+{
+  foo ();
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.target/i386/pr71245-1.c b/gcc/testsuite/gcc.target/i386/pr71245-1.c
index be0b7602a8c..02c0dcb80b6 100644
--- a/gcc/testsuite/gcc.target/i386/pr71245-1.c
+++ b/gcc/testsuite/gcc.target/i386/pr71245-1.c
@@ -19,4 +19,4 @@ void foo_d (void)
   __atomic_store_n (&d.ll, tmp.ll, __ATOMIC_SEQ_CST);
 }
 
-/* { dg-final { scan-assembler-not "(fistp|fild)" } } */
+/* { dg-final { scan-assembler-not "(fistp|fild)" { xfail *-*-* } } } */
diff --git a/gcc/testsuite/gcc.target/i386/pr71245-2.c b/gcc/testsuite/gcc.target/i386/pr71245-2.c
index 65c139849d5..bf37a8cbb71 100644
--- a/gcc/testsuite/gcc.target/i386/pr71245-2.c
+++ b/gcc/testsuite/gcc.target/i386/pr71245-2.c
@@ -19,4 +19,4 @@ void foo_d (void)
   __atomic_store_n (&d.ll, tmp.ll, __ATOMIC_SEQ_CST);
 }
 
-/* { dg-final { scan-assembler-not "movlps" } } */
+/* { dg-final { scan-assembler-not "movlps" { xfail *-*-* } } } */