PR target/48258, improve vector reduction on power7

From-SVN: r172981

3 files changed, 122 insertions, 1 deletions

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 79cb509..f6533ca 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,11 @@
+2011-03-23  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	PR target/48258
+	* gcc.target/powerpc/pr48258-1.c: New file.
+	* gcc.target/powerpc/pr48258-2.c: Ditto.
+
 2011-04-26  Xinliang David Li  <davidxl@google.com>
-	
+
 	* gcc.dg/uninit-suppress.c: New test.
 	* gcc.dg/uninit-suppress.c: New test.
 
diff --git a/gcc/testsuite/gcc.target/powerpc/pr48258-1.c b/gcc/testsuite/gcc.target/powerpc/pr48258-1.c
new file mode 100644
index 0000000..4f37815
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr48258-1.c
@@ -0,0 +1,57 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
+/* { dg-require-effective-target powerpc_vsx_ok } */
+/* { dg-options "-O3 -mcpu=power7 -mabi=altivec -ffast-math -fno-unroll-loops" } */
+/* { dg-final { scan-assembler-times "xvaddsp" 3 } } */
+/* { dg-final { scan-assembler-times "xvminsp" 3 } } */
+/* { dg-final { scan-assembler-times "xvmaxsp" 3 } } */
+/* { dg-final { scan-assembler-times "xxsldwi" 6 } } */
+/* { dg-final { scan-assembler-times "xscvspdp" 3 } } */
+/* { dg-final { scan-assembler-not "stvewx" } } */
+/* { dg-final { scan-assembler-not "stvx" } } */
+/* { dg-final { scan-assembler-not "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "stxvw4x" } } */
+
+#include <stddef.h>
+
+#ifndef SIZE
+#define SIZE 1024
+#endif
+
+float values[SIZE] __attribute__((__aligned__(32)));
+
+float
+vector_sum (void)
+{
+  size_t i;
+  float sum = 0.0f;
+
+  for (i = 0; i < SIZE; i++)
+    sum += values[i];
+
+  return sum;
+}
+
+float
+vector_min (void)
+{
+  size_t i;
+  float min = values[0];
+
+  for (i = 0; i < SIZE; i++)
+    min = __builtin_fminf (min, values[i]);
+
+  return min;
+}
+
+float
+vector_max (void)
+{
+  size_t i;
+  float max = values[0];
+
+  for (i = 0; i < SIZE; i++)
+    max = __builtin_fmaxf (max, values[i]);
+
+  return max;
+}
diff --git a/gcc/testsuite/gcc.target/powerpc/pr48258-2.c b/gcc/testsuite/gcc.target/powerpc/pr48258-2.c
new file mode 100644
index 0000000..443fb62
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr48258-2.c
@@ -0,0 +1,58 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
+/* { dg-require-effective-target powerpc_vsx_ok } */
+/* { dg-options "-O3 -mcpu=power7 -mabi=altivec -ffast-math -fno-unroll-loops" } */
+/* { dg-final { scan-assembler-times "xvadddp" 1 } } */
+/* { dg-final { scan-assembler-times "xvmindp" 1 } } */
+/* { dg-final { scan-assembler-times "xvmaxdp" 1 } } */
+/* { dg-final { scan-assembler-times "xsadddp" 1 } } */
+/* { dg-final { scan-assembler-times "xsmindp" 1 } } */
+/* { dg-final { scan-assembler-times "xsmaxdp" 1 } } */
+/* { dg-final { scan-assembler-not "xxsldwi" } } */
+/* { dg-final { scan-assembler-not "stvx" } } */
+/* { dg-final { scan-assembler-not "stxvd2x" } } */
+/* { dg-final { scan-assembler-not "stxvw4x" } } */
+
+#include <stddef.h>
+
+#ifndef SIZE
+#define SIZE 1024
+#endif
+
+double values[SIZE] __attribute__((__aligned__(32)));
+
+double
+vector_sum (void)
+{
+  size_t i;
+  double sum = 0.0;
+
+  for (i = 0; i < SIZE; i++)
+    sum += values[i];
+
+  return sum;
+}
+
+double
+vector_min (void)
+{
+  size_t i;
+  double min = values[0];
+
+  for (i = 0; i < SIZE; i++)
+    min = __builtin_fmin (min, values[i]);
+
+  return min;
+}
+
+double
+vector_max (void)
+{
+  size_t i;
+  double max = values[0];
+
+  for (i = 0; i < SIZE; i++)
+    max = __builtin_fmax (max, values[i]);
+
+  return max;
+}