rs6000.c (rs6000_gimple_fold_builtin): Add handling for early expansion of…

rs6000.c (rs6000_gimple_fold_builtin): Add handling for early expansion of vec_min and vec_max builtins.

[gcc]

2017-06-02  Will Schmidt  <will_schmidt@vnet.ibm.com>
	* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add handling
	for early expansion of vec_min and vec_max builtins.
	(builtin_function_type): Add min/max unsigned variants to those
	identified as having unsigned arguments.

[gcc/testsuite]

2017-06-02  Will Schmidt  <will_schmidt@vnet.ibm.com>

	*  testsuite/gcc.target/powerpc/fold-vec-minmax-char.c: New.
	*  testsuite/gcc.target/powerpc/fold-vec-minmax-floatdouble.c: New.
	*  testsuite/gcc.target/powerpc/fold-vec-minmax-int.c: New.
	*  testsuite/gcc.target/powerpc/fold-vec-minmax-longlong.c: New.
	*  testsuite/gcc.target/powerpc/fold-vec-minmax-short.c: New.

From-SVN: r248834

gcc/ChangeLog

+2017-06-02  Will Schmidt  <will_schmidt@vnet.ibm.com>
+	* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add handling
+	for early expansion of vec_min and vec_max builtins.
+	(builtin_function_type): Add min/max unsigned variants to those
+	identified as having unsigned arguments.
+
 2017-06-02  Olivier Hainque  <hainque@adacore.com>
 
 	* config/vx-common.h (DWARF_UNWIND_INFO): Switch #define to 1.

gcc/config/rs6000/rs6000.c

@@ -17347,6 +17347,46 @@ rs6000_gimple_fold_builtin (gimple_stmt_iterator *gsi)
 	gsi_replace (gsi, g, true);
 	return true;
       }
+    /* flavors of vec_min.  */
+    case VSX_BUILTIN_XVMINDP:
+    case P8V_BUILTIN_VMINSD:
+    case P8V_BUILTIN_VMINUD:
+    case ALTIVEC_BUILTIN_VMINSB:
+    case ALTIVEC_BUILTIN_VMINSH:
+    case ALTIVEC_BUILTIN_VMINSW:
+    case ALTIVEC_BUILTIN_VMINUB:
+    case ALTIVEC_BUILTIN_VMINUH:
+    case ALTIVEC_BUILTIN_VMINUW:
+    case ALTIVEC_BUILTIN_VMINFP:
+      {
+	arg0 = gimple_call_arg (stmt, 0);
+	arg1 = gimple_call_arg (stmt, 1);
+	lhs = gimple_call_lhs (stmt);
+	gimple *g = gimple_build_assign (lhs, MIN_EXPR, arg0, arg1);
+	gimple_set_location (g, gimple_location (stmt));
+	gsi_replace (gsi, g, true);
+	return true;
+      }
+    /* flavors of vec_max.  */
+    case VSX_BUILTIN_XVMAXDP:
+    case P8V_BUILTIN_VMAXSD:
+    case P8V_BUILTIN_VMAXUD:
+    case ALTIVEC_BUILTIN_VMAXSB:
+    case ALTIVEC_BUILTIN_VMAXSH:
+    case ALTIVEC_BUILTIN_VMAXSW:
+    case ALTIVEC_BUILTIN_VMAXUB:
+    case ALTIVEC_BUILTIN_VMAXUH:
+    case ALTIVEC_BUILTIN_VMAXUW:
+    case ALTIVEC_BUILTIN_VMAXFP:
+      {
+	arg0 = gimple_call_arg (stmt, 0);
+	arg1 = gimple_call_arg (stmt, 1);
+	lhs = gimple_call_lhs (stmt);
+	gimple *g = gimple_build_assign (lhs, MAX_EXPR, arg0, arg1);
+	gimple_set_location (g, gimple_location (stmt));
+	gsi_replace (gsi, g, true);
+	return true;
+      }
     default:
       break;
     }
@@ -18985,6 +19025,14 @@ builtin_function_type (machine_mode mode_ret, machine_mode mode_arg0,
     case MISC_BUILTIN_DIVDEU:
     case MISC_BUILTIN_DIVDEUO:
     case VSX_BUILTIN_UDIV_V2DI:
+    case ALTIVEC_BUILTIN_VMAXUB:
+    case ALTIVEC_BUILTIN_VMINUB:
+    case ALTIVEC_BUILTIN_VMAXUH:
+    case ALTIVEC_BUILTIN_VMINUH:
+    case ALTIVEC_BUILTIN_VMAXUW:
+    case ALTIVEC_BUILTIN_VMINUW:
+    case P8V_BUILTIN_VMAXUD:
+    case P8V_BUILTIN_VMINUD:
       h.uns_p[0] = 1;
       h.uns_p[1] = 1;
       h.uns_p[2] = 1;

gcc/testsuite/ChangeLog

+2017-06-02  Will Schmidt  <will_schmidt@vnet.ibm.com>
+
+	* gcc.target/powerpc/fold-vec-minmax-char.c: New.
+	* gcc.target/powerpc/fold-vec-minmax-floatdouble.c: New.
+	* gcc.target/powerpc/fold-vec-minmax-int.c: New.
+	* gcc.target/powerpc/fold-vec-minmax-longlong.c: New.
+	* gcc.target/powerpc/fold-vec-minmax-short.c: New.
+
 2017-06-02  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
 
 	* gcc.target/aarch64/atomic_cmp_exchange_zero_strong_1.c: New test.

gcc/testsuite/gcc.target/powerpc/fold-vec-minmax-char.c

+/* Verify that overloaded built-ins for vec_min with char
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-options "-maltivec" } */
+
+#include <altivec.h>
+
+vector signed char
+test3_min (vector signed char x, vector signed char y)
+{
+  return vec_min (x, y);
+}
+
+vector unsigned char
+test6_min (vector unsigned char x, vector unsigned char y)
+{
+  return vec_min (x, y);
+}
+
+vector signed char
+test3_max (vector signed char x, vector signed char y)
+{
+  return vec_max (x, y);
+}
+
+vector unsigned char
+test6_max (vector unsigned char x, vector unsigned char y)
+{
+  return vec_max (x, y);
+}
+
+/* { dg-final { scan-assembler-times "vminsb" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxsb" 1 } } */
+/* { dg-final { scan-assembler-times "vminub" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxub" 1 } } */

gcc/testsuite/gcc.target/powerpc/fold-vec-minmax-floatdouble.c

+/* Verify that overloaded built-ins for vec_max with float and
+   double inputs for VSX produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_vsx_ok } */
+/* { dg-options "-mvsx -O2" } */
+
+#include <altivec.h>
+
+vector float
+test1_min (vector float x, vector float y)
+{
+  return vec_min (x, y);
+}
+
+vector double
+test2_min (vector double x, vector double y)
+{
+  return vec_min (x, y);
+}
+
+vector float
+test1_max (vector float x, vector float y)
+{
+  return vec_max (x, y);
+}
+
+vector double
+test2_max (vector double x, vector double y)
+{
+  return vec_max (x, y);
+}
+
+/* { dg-final { scan-assembler-times "vminsp" 1 } } */
+/* { dg-final { scan-assembler-times "vmindp" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxsp" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxdp" 1 } } */

gcc/testsuite/gcc.target/powerpc/fold-vec-minmax-int.c

+/* Verify that overloaded built-ins for vec_min with int
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-options "-maltivec -O2" } */
+
+#include <altivec.h>
+
+vector signed int
+test3_min (vector signed int x, vector signed int y)
+{
+  return vec_min (x, y);
+}
+
+vector unsigned int
+test6_min (vector unsigned int x, vector unsigned int y)
+{
+  return vec_min (x, y);
+}
+
+vector signed int
+test3_max (vector signed int x, vector signed int y)
+{
+  return vec_max (x, y);
+}
+
+vector unsigned int
+test6_max (vector unsigned int x, vector unsigned int y)
+{
+  return vec_max (x, y);
+}
+
+/* { dg-final { scan-assembler-times "vminsw" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxsw" 1 } } */
+/* { dg-final { scan-assembler-times "vminuw" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxuw" 1 } } */

gcc/testsuite/gcc.target/powerpc/fold-vec-minmax-longlong.c

+/* Verify that overloaded built-ins for vec_min with long long
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_p8vector_ok } */
+/* { dg-options "-mpower8-vector" } */
+
+#include <altivec.h>
+
+vector signed long long
+test3_min (vector signed long long x, vector signed long long y)
+{
+  return vec_min (x, y);
+}
+
+vector unsigned long long
+test6_min (vector unsigned long long x, vector unsigned long long y)
+{
+  return vec_min (x, y);
+}
+
+vector signed long long
+test3_max (vector signed long long x, vector signed long long y)
+{
+  return vec_max (x, y);
+}
+
+vector unsigned long long
+test6_max (vector unsigned long long x, vector unsigned long long y)
+{
+  return vec_max (x, y);
+}
+
+/* { dg-final { scan-assembler-times "vminsd" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxsd" 1 } } */
+/* { dg-final { scan-assembler-times "vminud" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxud" 1 } } */

gcc/testsuite/gcc.target/powerpc/fold-vec-minmax-short.c

+/* Verify that overloaded built-ins for vec_min with short
+   inputs produce the right results.  */
+
+/* { dg-do compile } */
+/* { dg-require-effective-target powerpc_altivec_ok } */
+/* { dg-options "-maltivec" } */
+
+#include <altivec.h>
+
+vector signed short
+test3_min (vector signed short x, vector signed short y)
+{
+  return vec_min (x, y);
+}
+
+vector unsigned short
+test6_min (vector unsigned short x, vector unsigned short y)
+{
+  return vec_min (x, y);
+}
+
+vector signed short
+test3_max (vector signed short x, vector signed short y)
+{
+  return vec_max (x, y);
+}
+
+vector unsigned short
+test6_max (vector unsigned short x, vector unsigned short y)
+{
+  return vec_max (x, y);
+}
+
+/* { dg-final { scan-assembler-times "vminsh" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxsh" 1 } } */
+/* { dg-final { scan-assembler-times "vminuh" 1 } } */
+/* { dg-final { scan-assembler-times "vmaxuh" 1 } } */