TILE-Gx: fix clzsi2 for big-endian.

        * config/tilegx/tilegx.md (clzsi2): Fix for big-endian.

From-SVN: r242616

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 679386956083e058b581d4e82a87be7d57846e29..13b60c2e1e84c1830136737095898a55e8b6bb60 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2016-11-18  Walter Lee  <walt@tilera.com>
+
+       * config/tilegx/tilegx.md (clzsi2): Fix for big-endian.
+
 2016-11-18  Jakub Jelinek  <jakub@redhat.com>
 
        PR middle-end/78419

diff --git a/gcc/config/tilegx/tilegx.md b/gcc/config/tilegx/tilegx.md
index 361d51c6756da79d6ae01d612a46e1e90ee5dead..55c345c50d43233ae266a182c452c89b64fb36a4 100644 (file)
--- a/gcc/config/tilegx/tilegx.md
+++ b/gcc/config/tilegx/tilegx.md
@@ -1798,19 +1798,20 @@
   [(set_attr "type" "Y0")])
 
 (define_expand "clzsi2"
-  [(set (match_dup 2)
-       (zero_extend:DI (match_operand:SI 1 "reg_or_0_operand" "")))
-   (set (match_dup 2)
-       (ashift:DI (match_dup 2)
-                   (const_int 32)))
-   (set (match_dup 2)
-       (clz:DI (match_dup 2)))
-   (set (match_operand:SI 0 "register_operand" "")
-       (subreg:SI (match_dup 2) 0))]
-   ""
-   {
-     operands[2] = gen_reg_rtx (DImode);
-   })
+  [(set (match_operand:SI 0 "register_operand" "=r")
+       (clz:SI (match_operand:SI 1 "reg_or_0_operand" "rO")))]
+  ""
+  {
+    rtx tmp1 = gen_reg_rtx (DImode);
+    rtx tmp2 = gen_reg_rtx (DImode);
+    rtx tmp3 = gen_reg_rtx (DImode);
+
+    emit_insn (gen_zero_extendsidi2 (tmp1, operands[1]));
+    emit_insn (gen_ashldi3 (tmp2, tmp1, (GEN_INT (32))));
+    emit_insn (gen_clzdi2 (tmp3, tmp2));
+    emit_move_insn (operands[0], gen_lowpart (SImode, tmp3));
+    DONE;
+  })
 
 (define_insn "ctz<mode>2"
   [(set (match_operand:I48MODE 0 "register_operand" "=r")