IBM Z: Add vcond_mask expander

After adding vec_cmp expanders we have seen various performance
related regression in the testsuite.  These appear to be caused by a
missing vcond_mask definition in the backend.  Fixed with this patch.

The patch fixes the following testsuite fails:

FAIL: gcc.dg/vect/vect-21.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-21.c scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-23.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-23.c scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-24.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-24.c scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-live-6.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
FAIL: gcc.dg/vect/vect-live-6.c scan-tree-dump vect "vectorized 1 loops"
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrab\\t%v.?,%v.?,7 6
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesraf\\t%v.?,%v.?,31 6
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrah\\t%v.?,%v.?,15 6
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrlb\\t%v.?,%v.?,7 4
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrlf\\t%v.?,%v.?,31 4
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrlh\\t%v.?,%v.?,15 4
FAIL: gcc.dg/vect/vect-21.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-21.c scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-23.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-23.c scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-24.c -flto -ffat-lto-objects  scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-24.c scan-tree-dump-times vect "vectorized 3 loops" 1
FAIL: gcc.dg/vect/vect-live-6.c -flto -ffat-lto-objects  scan-tree-dump vect "vectorized 1 loops"
FAIL: gcc.dg/vect/vect-live-6.c scan-tree-dump vect "vectorized 1 loops"
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrab\\t%v.?,%v.?,7 6
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesraf\\t%v.?,%v.?,31 6
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrah\\t%v.?,%v.?,15 6
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrlb\\t%v.?,%v.?,7 4
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrlf\\t%v.?,%v.?,31 4
FAIL: gcc.target/s390/vector/vcond-shift.c scan-assembler-times vesrlh\\t%v.?,%v.?,15 4

gcc/ChangeLog:

	* config/s390/vector.md ("vcond_mask_<mode><mode>"): New expander.

diff --git a/gcc/config/s390/vector.md b/gcc/config/s390/vector.md
index 3c01cd1b1e103c31bd55923ef9e9c5d62a229513..3e621daf7b1a0d879248b0283d33709fd70b7149 100644 (file)
--- a/gcc/config/s390/vector.md
+++ b/gcc/config/s390/vector.md
@@ -658,6 +658,17 @@
   DONE;
 })
 
+(define_expand "vcond_mask_<mode><mode>"
+  [(set (match_operand:V 0 "register_operand" "")
+       (if_then_else:V
+        (eq (match_operand:<tointvec> 3 "register_operand" "")
+            (match_dup 4))
+        (match_operand:V 2 "register_operand" "")
+        (match_operand:V 1 "register_operand" "")))]
+  "TARGET_VX"
+  "operands[4] = CONST0_RTX (<tointvec>mode);")
+
+
 ; We only have HW support for byte vectors.  The middle-end is
 ; supposed to lower the mode if required.
 (define_insn "vec_permv16qi"