@@ -3274,7 +3274,9 @@ static bool
nvptx_unisimt_handle_set (rtx set, rtx_insn *insn, rtx master)
{
rtx reg;
- if (GET_CODE (set) == SET && REG_P (reg = SET_DEST (set)))
+ if (GET_CODE (set) == SET
+ && REG_P (reg = SET_DEST (set))
+ && find_reg_note (insn, REG_UNUSED, reg) == NULL_RTX)
{
emit_insn_after (nvptx_gen_shuffle (reg, reg, master, SHUFFLE_IDX),
insn);
new file mode 100644
@@ -0,0 +1,22 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -muniform-simt -mptx=_" } */
+
+enum memmodel
+{
+ MEMMODEL_RELAXED = 0
+};
+
+unsigned long long int *p64;
+unsigned long long int v64;
+
+int
+main()
+{
+ __atomic_fetch_add (p64, v64, MEMMODEL_RELAXED);
+
+ return 0;
+}
+
+/* { dg-final { scan-assembler-times "atom.add.u64\[\t \]+_," 1 } } */
+/* { dg-final { scan-assembler-times "bar.warp.sync" 1 } } */
+/* { dg-final { scan-assembler-not "shfl.sync.idx" } } */