Mercurial > projects > dstress
diff run/mini/intrinsics_ovf.d @ 1628:c6ef09dfba4d
add mini test set from ldc project
author | Moritz Warning <moritzwarning@web.de> |
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date | Mon, 10 Jan 2011 19:47:18 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/run/mini/intrinsics_ovf.d Mon Jan 10 19:47:18 2011 +0100 @@ -0,0 +1,77 @@ +module intrinsics_ovf; + + +//version = PRINTF; + +version(PRINTF) + extern(C) int printf(char*, ...); + + +import ldc.intrinsics; + + +int saddo(int a, int b, out bool overflow) { + auto Result = llvm_sadd_with_overflow(a, b); + overflow = Result.overflow; + return Result.result; +} + +int uaddo(int a, int b, out bool overflow) { + auto Result = llvm_uadd_with_overflow(a, b); + overflow = Result.overflow; + return Result.result; +} + +int smulo(int a, int b, out bool overflow) { + auto Result = llvm_smul_with_overflow(a, b); + overflow = Result.overflow; + return Result.result; +} + +/* +uint umulo(uint a, uint b, out bool overflow) { + auto Result = llvm_umul_with_overflow(a, b); + overflow = Result.overflow; + return Result.result; +} +*/ + +void test(int function(int, int, out bool) fn, + int a, int b, int result_e, bool ovf_e) { + version(PRINTF) + printf("%8x :: %8x :: %8x :: %.*s\n", a, b, result_e, + (ovf_e ? "true" : "false")); + + bool ovf; + int result = fn(a, b, ovf); + + version(PRINTF) + printf("____________________ %8x :: %.*s\n", result, + (ovf ? "true" : "false")); + + assert(ovf == ovf_e); + assert(result == result_e); +} + +void main() { + test(&saddo, int.min, int.min, int.min + int.min, true); + test(&saddo, int.min, int.max, int.min + int.max, false); + test(&saddo, 1, int.max, 1 + int.max, true); + test(&saddo, 1, 2, 3, false); + test(&saddo, -1, -2, -3, false); + + test(&uaddo, 0, uint.max, 0 + uint.max, false); + test(&uaddo, 1, uint.max, 1 + uint.max, true); + test(&uaddo, 1, 2, 3, false); + + test(&smulo, int.min, int.min, int.min * int.min, true); + test(&smulo, int.min, int.max, int.min * int.max, true); + test(&smulo, int.max, int.max, int.max * int.max, true); + test(&smulo, 1, int.max, 1 * int.max, false); + test(&smulo, 2, int.max/2, 2 * (int.max/2), false); + test(&smulo, 2, int.max/2 + 1, 2 * (int.max/2 + 1), true); + test(&smulo, 2, int.min/2, 2 * (int.min/2), false); + test(&smulo, 2, int.min/2 - 1, 2 * (int.min/2 - 1), true); + test(&smulo, 1, 2, 2, false); + test(&smulo, -1, -2, 2, false); +}