Add support for SmartMIPS ASE.

2007-07-05  Sandra Loosemore  <sandra@codesourcery.com>
	    David Ung  <davidu@mips.com>

	Add support for SmartMIPS ASE.

	gcc/
	* optabs.c (expand_binop_directly): New, broken out from...
	(expand_binop): Here.  Make it try rotating in the other
	direction even when the second operand isn't constant.
	* config/mips/mips.md (*lwxs): New.
	* config/mips/mips.opt (msmartmips): New.
	* config/mips/mips.c (mips_lwxs_address_p): New.
	(mips_rtx_costs): Make it recognize scaled indexed addressing.
	* config/mips/mips.h (TARGET_CPU_CPP_BUILTINS): Define
	__mips_smartmips when compiling for TARGET_SMARTMIPS.
	(ISA_HAS_ROR): Define for TARGET_SMARTMIPS.
	(ISA_HAS_LWXS): New.
	(ASM_SPEC): Add -msmartmips/-mno-smartmips.
	* doc/invoke.texi (MIPS Options): Document -msmartmips/-mno-smartmips.
	* testsuite/gcc.target/mips/smartmips-lwxs.c: New test case.
	* testsuite/gcc.target/mips/smartmips-ror-1.c: New test case.
	* testsuite/gcc.target/mips/smartmips-ror-2.c: New test case.
	* testsuite/gcc.target/mips/smartmips-ror-3.c: New test case.
	* testsuite/gcc.target/mips/smartmips-ror-4.c: New test case.

Co-Authored-By: David Ung <davidu@mips.com>

From-SVN: r126370

5 files changed, 44 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/mips/smartmips-lwxs.c b/gcc/testsuite/gcc.target/mips/smartmips-lwxs.c
new file mode 100644
index 0000000..cd9b0b3
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/smartmips-lwxs.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-mips-options "-O -msmartmips -mno-mips16" } */
+
+int scaled_indexed_word_load (int a[], int b)
+{
+  return a[b];
+}
+/* { dg-final { scan-assembler "\tlwxs\t" } } */
diff --git a/gcc/testsuite/gcc.target/mips/smartmips-ror-1.c b/gcc/testsuite/gcc.target/mips/smartmips-ror-1.c
new file mode 100644
index 0000000..5ad7f34
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/smartmips-ror-1.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-mips-options "-O -msmartmips -mno-mips16" } */
+
+int rotate_left (unsigned a, unsigned s)
+{
+  return (a << s) | (a >> (32 - s));
+}
+/* { dg-final { scan-assembler "\tror\t" } } */
diff --git a/gcc/testsuite/gcc.target/mips/smartmips-ror-2.c b/gcc/testsuite/gcc.target/mips/smartmips-ror-2.c
new file mode 100644
index 0000000..93d376d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/smartmips-ror-2.c
@@ -0,0 +1,8 @@
+/* { dg-do compile } */
+/* { dg-mips-options "-O -msmartmips -mno-mips16" } */
+
+int rotate_right (unsigned a, unsigned s)
+{
+  return (a >> s) | (a << (32 - s));
+}
+/* { dg-final { scan-assembler "\tror\t" } } */
diff --git a/gcc/testsuite/gcc.target/mips/smartmips-ror-3.c b/gcc/testsuite/gcc.target/mips/smartmips-ror-3.c
new file mode 100644
index 0000000..ec1c6e2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/smartmips-ror-3.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-mips-options "-O -msmartmips -mno-mips16" } */
+
+#define S 13
+
+int rotate_left_constant (unsigned a)
+{
+  return (a << S) | (a >> (32 - S));
+}
+/* { dg-final { scan-assembler "\tror\t" } } */
diff --git a/gcc/testsuite/gcc.target/mips/smartmips-ror-4.c b/gcc/testsuite/gcc.target/mips/smartmips-ror-4.c
new file mode 100644
index 0000000..2a56210
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/smartmips-ror-4.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-mips-options "-O -msmartmips -mno-mips16" } */
+
+#define S 13
+
+int rotate_right_constant (unsigned a)
+{
+  return (a >> S) | (a << (32 - S));
+}
+/* { dg-final { scan-assembler "\tror\t" } } */