i386.md (*popcounthi2_1): New insn_and_split pattern.

	* config/i386/i386.md (*popcounthi2_1): New insn_and_split pattern.

testsuite/ChangeLog:

	* gcc.target/i386/pr59874-3.c: New test.

From-SVN: r243811

4 files changed, 49 insertions, 15 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 69ef89b..49484d7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,10 @@
+2016-12-19  Uros Bizjak  <ubizjak@gmail.com>
+
+	* config/i386/i386.md (*popcounthi2_1): New insn_and_split pattern.
+
 2016-12-19  Sandra Loosemore  <sandra@codesourcery.com>
 
-	* doc/cpp.texi: Clean up anachronistic C99 references and remove 
+	* doc/cpp.texi: Clean up anachronistic C99 references and remove
 	discussion of very old GCC versions.
 	(Differences from previous versions): Delete entire section.
 
@@ -183,8 +187,7 @@
 	* config/arc/arc.md (mulsidi_600): Change to insn_and_split,
 	generate new mul64 insn for core multiplication work.
 	(umulsidi_600): Likewise, but use mulu64 insn.
-	(mul64): New pattern, content taken from old mulsidi_600 insn
-	pattern.
+	(mul64): New pattern, content taken from old mulsidi_600 insn pattern.
 	(mulu64): Likewise, but using umulsidi_600.
 	(mulsidi3): Remove move to destination, this is now handled by
 	mulsidi_600 insn_and_split.
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 2123914..a88c0b8 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -13221,6 +13221,24 @@
    (set_attr "type" "bitmanip")
    (set_attr "mode" "<MODE>")])
 
+(define_insn_and_split "*popcounthi2_1"
+  [(set (match_operand:SI 0 "register_operand")
+	(popcount:SI
+	  (zero_extend:SI (match_operand:HI 1 "nonimmediate_operand"))))
+   (clobber (reg:CC FLAGS_REG))]
+  "TARGET_POPCNT
+   && can_create_pseudo_p ()"
+  "#"
+  "&& 1"
+  [(const_int 0)]
+{
+  rtx tmp = gen_reg_rtx (HImode);
+
+  emit_insn (gen_popcounthi2 (tmp, operands[1]));
+  emit_insn (gen_zero_extendhisi2 (operands[0], tmp));
+  DONE;
+})
+
 (define_insn "popcounthi2"
   [(set (match_operand:HI 0 "register_operand" "=r")
 	(popcount:HI
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 4eb7ea7..cd0d954 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,18 +1,21 @@
+2016-12-19  Uros Bizjak  <ubizjak@gmail.com>
+
+	* gcc.target/i386/pr59874-3.c: New test.
+
 2016-12-19  Will Schmidt  <will_schmidt@vnet.ibm.com>
 
-	*  gcc.dg/vmx/mult-even-odd-be-order.c: Mark
-	variables as volatile.
-	*  gcc.target/powerpc/fold-vec-mult-char.c: New.
-	*  gcc.target/powerpc/fold-vec-mult-float.c: New.
-	*  gcc.target/powerpc/fold-vec-mult-floatdouble.c: New.
-	*  gcc.target/powerpc/fold-vec-mult-int.c: New.
-	*  gcc.target/powerpc/fold-vec-mult-int128-p8.c: New.
-	*  gcc.target/powerpc/fold-vec-mult-int128-p9.c: New.
-	*  gcc.target/powerpc/fold-vec-mult-longlong.c: New.
-	*  gcc.target/powerpc/fold-vec-mult-short.c: New.
+	* gcc.dg/vmx/mult-even-odd-be-order.c: Mark variables as volatile.
+	* gcc.target/powerpc/fold-vec-mult-char.c: New.
+	* gcc.target/powerpc/fold-vec-mult-float.c: New.
+	* gcc.target/powerpc/fold-vec-mult-floatdouble.c: New.
+	* gcc.target/powerpc/fold-vec-mult-int.c: New.
+	* gcc.target/powerpc/fold-vec-mult-int128-p8.c: New.
+	* gcc.target/powerpc/fold-vec-mult-int128-p9.c: New.
+	* gcc.target/powerpc/fold-vec-mult-longlong.c: New.
+	* gcc.target/powerpc/fold-vec-mult-short.c: New.
 
 2016-12-19  Will Schmidt  <will_schmidt@vnet.ibm.com>
- 
+
 	* gcc.target/powerpc/fold-vec-sub-char.c: New.
 	* gcc.target/powerpc/fold-vec-sub-float.c: New.
 	* gcc.target/powerpc/fold-vec-sub-floatdouble.c: New.
@@ -39,7 +42,7 @@
 2016-12-17  Steven G. Kargl  <kargl@gcc.gnu.org>
 
 	PR fortran/78746
-	* charlen_03.f90: Remove test. 
+	* charlen_03.f90: Remove test.
 	* charlen_10.f90: Ditto.
 
 2016-12-17  Jakub Jelinek  <jakub@redhat.com>
diff --git a/gcc/testsuite/gcc.target/i386/pr59874-3.c b/gcc/testsuite/gcc.target/i386/pr59874-3.c
new file mode 100644
index 0000000..ec55a12
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr59874-3.c
@@ -0,0 +1,10 @@
+/* PR target/59874 */
+/* { dg-do compile } */
+/* { dg-options "-O2 -mpopcnt -masm=att" } */
+/* { dg-final { scan-assembler "popcntw" } } */
+
+unsigned int
+foo (unsigned short x)
+{
+  return __builtin_popcount (x);
+}