[PATCH, rs6000] Fold vector logicals (eqv) in GIMPLE

[Will Schmidt]

Hi, 

Add support for early expansion of vector eqv built-ins.

Bootstraps currently running.  

OK for trunk?

Thanks,
-Will

  
    [gcc]
    
    2017-05-26  Will Schmidt  <will_schmidt@vnet.ibm.com>
    
    	* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add handling
    	for early expansion of vec_eqv.
    
    [gcc/testsuite]
    
    2017-05-26  Will Schmidt  <will_schmidt@vnet.ibm.com>
    
    	* testsuite/gcc.target/powerpc/fold-vec-logical-eqv-char.c: New.
    	* testsuite/gcc.target/powerpc/fold-vec-logical-eqv-float.c: New.
    	* testsuite/gcc.target/powerpc/fold-vec-logical-eqv-floatdouble.c: New.
    	* testsuite/gcc.target/powerpc/fold-vec-logical-eqv-int.c: New.
    	* testsuite/gcc.target/powerpc/fold-vec-logical-eqv-longlong.c: New.
    	* testsuite/gcc.target/powerpc/fold-vec-logical-eqv-short.c: New.

diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index ce6cc1b..8adbc06 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -17388,6 +17388,26 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi)
 	gsi_replace (gsi, g, true);
 	return true;
       }
+    /* Flavors of vec_eqv.  */
+    case P8V_BUILTIN_EQV_V16QI:
+    case P8V_BUILTIN_EQV_V8HI:
+    case P8V_BUILTIN_EQV_V4SI:
+    case P8V_BUILTIN_EQV_V4SF:
+    case P8V_BUILTIN_EQV_V2DF:
+    case P8V_BUILTIN_EQV_V2DI:
+      {
+	arg0 = gimple_call_arg (stmt, 0);
+	arg1 = gimple_call_arg (stmt, 1);
+	lhs = gimple_call_lhs (stmt);
+	tree temp = create_tmp_reg_or_ssa_name (TREE_TYPE (arg1));
+	gimple *g = gimple_build_assign (temp, BIT_XOR_EXPR, arg0, arg1);
+	gimple_set_location (g, gimple_location (stmt));
+	gsi_insert_before(gsi, g, GSI_SAME_STMT);
+	g = gimple_build_assign (lhs, BIT_NOT_EXPR, temp);
+	gimple_set_location (g, gimple_location (stmt));
+	gsi_replace (gsi, g, true);
+	return true;
+      }
     default:
       break;
     }
diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-char.c b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-char.c
new file mode 100644
index 0000000..6810848
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-char.c
@@ -0,0 +1,28 @@
+/* Verify that overloaded built-ins for vec_eqv with char
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-options "-mpower8-vector -O2" } */
+
+#include <altivec.h>
+
+vector bool char
+test1 (vector bool char x, vector bool char y)
+{
+  return vec_eqv (x, y);
+}
+
+vector signed char
+test3 (vector signed char x, vector signed char y)
+{
+  return vec_eqv (x, y);
+}
+
+vector unsigned char
+test6 (vector unsigned char x, vector unsigned char y)
+{
+  return vec_eqv (x, y);
+}
+
+/* { dg-final { scan-assembler-times "xxleqv" 3 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-float.c b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-float.c
new file mode 100644
index 0000000..d206cfe
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-float.c
@@ -0,0 +1,16 @@
+/* Verify that overloaded built-ins for vec_eqv with float
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-options "-mpower8-vector -O2" } */
+
+#include <altivec.h>
+
+vector float
+test1 (vector float x, vector float y)
+{
+  return vec_eqv (x, y);
+}
+
+/* { dg-final { scan-assembler-times "xxleqv" 1 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-floatdouble.c b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-floatdouble.c
new file mode 100644
index 0000000..56b7cac
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-floatdouble.c
@@ -0,0 +1,22 @@
+/* Verify that overloaded built-ins for vec_eqv with float and
+   double inputs for VSX produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-options "-mpower8-vector -O2" } */
+
+#include <altivec.h>
+
+vector float
+test1 (vector float x, vector float y)
+{
+  return vec_eqv (x, y);
+}
+
+vector double
+test2 (vector double x, vector double y)
+{
+  return vec_eqv (x, y);
+}
+
+/* { dg-final { scan-assembler-times "xxleqv" 2 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-int.c b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-int.c
new file mode 100644
index 0000000..f5d292e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-int.c
@@ -0,0 +1,28 @@
+/* Verify that overloaded built-ins for vec_eqv with int
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-options "-mpower8-vector -O2" } */
+
+#include <altivec.h>
+
+vector bool int
+test1 (vector bool int x, vector bool int y)
+{
+  return vec_eqv (x, y);
+}
+
+vector signed int
+test3 (vector signed int x, vector signed int y)
+{
+  return vec_eqv (x, y);
+}
+
+vector unsigned int
+test6 (vector unsigned int x, vector unsigned int y)
+{
+  return vec_eqv (x, y);
+}
+
+/* { dg-final { scan-assembler-times "xxleqv" 3 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-longlong.c b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-longlong.c
new file mode 100644
index 0000000..342b2bd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-longlong.c
@@ -0,0 +1,28 @@
+/* Verify that overloaded built-ins for vec_eqv with long long
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-options "-mpower8-vector -O2" } */
+
+#include <altivec.h>
+
+vector bool long long
+test1 (vector bool long long x, vector bool long long y)
+{
+  return vec_eqv (x, y);
+}
+
+vector signed long long
+test3 (vector signed long long x, vector signed long long y)
+{
+  return vec_eqv (x, y);
+}
+
+vector unsigned long long
+test6 (vector unsigned long long x, vector unsigned long long y)
+{
+  return vec_eqv (x, y);
+}
+
+/* { dg-final { scan-assembler-times "xxleqv" 3 } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-short.c b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-short.c
new file mode 100644
index 0000000..79ca8aa
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/fold-vec-logical-eqv-short.c
@@ -0,0 +1,28 @@
+/* Verify that overloaded built-ins for vec_eqv with short
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-options "-mpower8-vector -O2" } */
+
+#include <altivec.h>
+
+vector bool short
+test1 (vector bool short x, vector bool short y)
+{
+  return vec_eqv (x, y);
+}
+
+vector signed short
+test3 (vector signed short x, vector signed short y)
+{
+  return vec_eqv (x, y);
+}
+
+vector unsigned short
+test6 (vector unsigned short x, vector unsigned short y)
+{
+  return vec_eqv (x, y);
+}
+
+/* { dg-final { scan-assembler-times "xxleqv" 3 } } */