xscale testcases from James Lemke

xscale testcases from James Lemke
	* gcc.dg/arm-scd42-[123].c: New tests.

From-SVN: r74712

gcc/testsuite/ChangeLog

+2003-12-16  James Lemke  <jim@wasabisystems.com>
+
+	* gcc.dg/arm-scd42-[123].c: New tests.
+
 2003-12-16  Nathan Sidwell  <nathan@codesourcery.com>
 
 	PR c++/9043

gcc/testsuite/gcc.dg/arm-scd42-1.c

+/* Verify that mov is preferred on XScale for loading a 1 byte constant. */
+/* { dg-do compile { target xscale-*-* } } */
+/* { dg-options "-mcpu=xscale -O" } */
+
+unsigned load1(void) __attribute__ ((naked));
+unsigned load1(void)
+{
+    /* Best code would be:
+       mov r0, =17
+       mov pc, lr */
+
+    return 17;
+}
+
+/* { dg-final { scan-assembler "mov\[ 	].*17" } } */

gcc/testsuite/gcc.dg/arm-scd42-2.c

+/* Verify that mov is preferred on XScale for loading a 2 byte constant. */
+/* { dg-do compile { target xscale-*-* } } */
+/* { dg-options "-mcpu=xscale -O" } */
+
+unsigned load2(void) __attribute__ ((naked));
+unsigned load2(void)
+{
+    /* Best code would be:
+       mov r0, =272
+       add r0, r0, =1
+       mov pc, lr */
+
+    return 273;
+}
+
+/* We want to suppress running for -mthumb but not for -mthumb-interwork. */
+/* { dg-final { global compiler_flags; if ![string match "*-mthumb *" $compiler_flags] { scan-assembler "mov\[ 	].*272" } } } */

gcc/testsuite/gcc.dg/arm-scd42-3.c

+/* Verify that ldr is preferred on XScale for loading a 3 or 4 byte constant. */
+/* { dg-do compile { target xscale-*-* } } */
+/* { dg-options "-mcpu=xscale -O" } */
+
+unsigned load4(void) __attribute__ ((naked));
+unsigned load4(void)
+{
+    /* Best code would be:
+       ldr r0, =65809
+       mov pc, lr */
+
+    return 65809;
+}
+
+/* { dg-final { scan-assembler "ldr\[ 	].*" } } */