[llvm-commits] CVS: llvm/test/Programs/SingleSource/UnitTests/2003-05-26-Shorts.c

[Vikram Adve]

Changes in directory llvm/test/Programs/SingleSource/UnitTests:

2003-05-26-Shorts.c added (r1.1)

---
Log message:

Unit test for handling of short signed and unsigned integers
less than a word size, especially in -, * and / operations.


---
Diffs of the changes:

Index: llvm/test/Programs/SingleSource/UnitTests/2003-05-26-Shorts.c
diff -c /dev/null llvm/test/Programs/SingleSource/UnitTests/2003-05-26-Shorts.c:1.1
*** /dev/null	Mon May 26 17:03:36 2003
--- llvm/test/Programs/SingleSource/UnitTests/2003-05-26-Shorts.c	Mon May 26 17:03:25 2003
***************
*** 0 ****
--- 1,54 ----
+ /*
+  * This test stresses masking and sign-extension for operations on
+  * signed and unsigned types less than the machine integer reg. size.
+  * Several things have to happen correctly:
+  * -- correct constant folding if it is done at compile-time
+  * -- correct sign-extensions during native code generation for -, * and /.
+  * -- correct handling of high bits during native code generation for
+  *    a sequence of operations involving -, * and /.
+  */
+ #include <stdlib.h>
+ #include <stdio.h>
+ #include <sys/types.h>
+ 
+ int
+ main(int argc, char** argv)
+ {
+   unsigned long  UL = 0xafafafafc5c5b8a3;
+            long   L = (long) UL;
+ 
+   unsigned int   ui = (unsigned int) UL;        /* 0xc5c5b8a3 =  3318069411 */
+            int    i =          (int) UL;        /* 0xc5c5b8a3 = -976897885 */
+ 
+   unsigned short us = (unsigned short) UL;      /*     0xb8a3 =  47267 */
+            short  s =          (short) UL;      /*     0xb8a3 = -18269 */
+ 
+   uint8_t        ub = (uint8_t) UL;             /*       0xa3 =  163 */
+   int8_t          b = ( int8_t) UL;             /*       0xa3 = -93 */
+ 
+   printf("   ui = %u (0x%x)\t\tUL-ui = %ld (0x%x)\n",   ui, ui, UL-ui, UL-ui);
+   printf("ui*ui = %u (0x%x)\t  UL/ui = %ld (0x%x)\n\n",
+          (unsigned int) ui*ui, (unsigned int) ui*ui, UL/ui, UL/ui);
+ 
+   printf("    i = %d (0x%x)\tL-i = %ld (0x%x)\n",     i, i, L-i, L-i);
+   printf(" i* i = %d (0x%x)\tL/ i = %ld (0x%x)\n\n",
+          (int) i*i,  (int) i*i, L/i, L/i);
+ 
+   printf("us    = %u (0x%x)\t\tUL-us = %ld (0x%x)\n",   us, us, UL-us, UL-us);
+   printf("us*us = %u (0x%x)\t  UL/us = %ld (0x%x)\n\n",
+          (unsigned short) us*us, (unsigned short) us*us, UL/us, UL/us);
+ 
+   printf(" s    = %d (0x%x)\tL-s = %ld (0x%x)\n",     s, s, L-s, L-s);
+   printf(" s* s = %d (0x%x)\tL/ s = %ld (0x%x)\n\n",
+          (short) s*s, (short) s*s, L/s, L/s);
+ 
+   printf("ub    = %u (0x%x)\t\tUL-ub = %ld (0x%x)\n",   ub, ub, UL-ub, UL-ub);
+   printf("ub*ub = %u (0x%x)\t\tUL/ub = %ld (0x%x)\n\n",
+          (uint8_t) ub*ub, (uint8_t) ub*ub, UL/ub, UL/ub);
+ 
+   printf(" b    = %d (0x%x)\t\tL-b = %ld (0x%x)\n",     b, b, L-b, L-b);
+   printf(" b* b = %d (0x%x)\t\t\tL/b = %ld (0x%x)\n\n",
+          (int8_t) b*b, (int8_t) b*b, L/b, L/b);
+ 
+   return 0;
+ }