Improve powerpc floating point rounding

From-SVN: r166510

4 files changed, 50 insertions, 2 deletions

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 3e451d0..19f58b1 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,14 @@
+2010-11-09  Michael Meissner  <meissner@linux.vnet.ibm.com>
+
+	* gcc.target/powerpc/ppc-fpconv-11.c: Use -mcpu=power5+, not
+	power5 to enable generation of FRIZ.
+
+	* gcc.target/powerpc/ppc-round.c: New file, test (double)(int)
+	optimization.
+
+	* gcc.target/powerpc/ppc-fpconv-2.c: Update # times lfiwax is
+	expected.
+
 2010-11-09  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/43808
diff --git a/gcc/testsuite/gcc.target/powerpc/ppc-fpconv-11.c b/gcc/testsuite/gcc.target/powerpc/ppc-fpconv-11.c
index f6d28cd..2eebbb4 100644
--- a/gcc/testsuite/gcc.target/powerpc/ppc-fpconv-11.c
+++ b/gcc/testsuite/gcc.target/powerpc/ppc-fpconv-11.c
@@ -1,6 +1,6 @@
 /* { dg-do compile { target { powerpc*-*-* } } } */
 /* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
-/* { dg-options "-O2 -mcpu=power5 -ffast-math" } */
+/* { dg-options "-O2 -mcpu=power5+ -ffast-math" } */
 /* { dg-final { scan-assembler-not "xsrdpiz" } } */
 /* { dg-final { scan-assembler "friz" } } */
 
diff --git a/gcc/testsuite/gcc.target/powerpc/ppc-fpconv-2.c b/gcc/testsuite/gcc.target/powerpc/ppc-fpconv-2.c
index f90a35b..e0a83422 100644
--- a/gcc/testsuite/gcc.target/powerpc/ppc-fpconv-2.c
+++ b/gcc/testsuite/gcc.target/powerpc/ppc-fpconv-2.c
@@ -2,7 +2,7 @@
 /* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
 /* { dg-require-effective-target powerpc_vsx_ok } */
 /* { dg-options "-O2 -mcpu=power6 -ffast-math" } */
-/* { dg-final { scan-assembler-times "lfiwax" 1 } } */
+/* { dg-final { scan-assembler-times "lfiwax" 2 } } */
 /* { dg-final { scan-assembler-not "lfiwzx" } } */
 /* { dg-final { scan-assembler-times "fcfid " 10 } } */
 /* { dg-final { scan-assembler-not "fcfids" } } */
diff --git a/gcc/testsuite/gcc.target/powerpc/ppc-round.c b/gcc/testsuite/gcc.target/powerpc/ppc-round.c
new file mode 100644
index 0000000..20262aa
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/ppc-round.c
@@ -0,0 +1,37 @@
+/* { dg-do compile { target { powerpc*-*-* && lp64 } } } */
+/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
+/* { dg-require-effective-target powerpc_vsx_ok } */
+/* { dg-options "-O2 -mcpu=power7" } */
+/* { dg-final { scan-assembler-times "stfiwx" 4 } } */
+/* { dg-final { scan-assembler-times "lfiwax" 2 } } */
+/* { dg-final { scan-assembler-times "lfiwzx" 2 } } */
+/* { dg-final { scan-assembler-times "fctiwz" 2 } } */
+/* { dg-final { scan-assembler-times "xscvsxddp" 2 } } */
+/* { dg-final { scan-assembler-times "fcfids" 2 } } */
+/* { dg-final { scan-assembler-not "lwz" } } */
+/* { dg-final { scan-assembler-not "stw" } } */
+
+/* Make sure we don't have loads/stores to the GPR unit.  */
+double
+round_double_int (double a)
+{
+  return (double)(int)a;
+}
+
+float
+round_float_int (float a)
+{
+  return (float)(int)a;
+}
+
+double
+round_double_uint (double a)
+{
+  return (double)(unsigned int)a;
+}
+
+float
+round_float_uint (float a)
+{
+  return (float)(unsigned int)a;
+}