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Diffstat (limited to 'lib/builtins/ucmpdi2.c')
-rw-r--r-- | lib/builtins/ucmpdi2.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/lib/builtins/ucmpdi2.c b/lib/builtins/ucmpdi2.c new file mode 100644 index 000000000000..40af23613b1f --- /dev/null +++ b/lib/builtins/ucmpdi2.c @@ -0,0 +1,51 @@ +/* ===-- ucmpdi2.c - Implement __ucmpdi2 -----------------------------------=== + * + * The LLVM Compiler Infrastructure + * + * This file is dual licensed under the MIT and the University of Illinois Open + * Source Licenses. See LICENSE.TXT for details. + * + * ===----------------------------------------------------------------------=== + * + * This file implements __ucmpdi2 for the compiler_rt library. + * + * ===----------------------------------------------------------------------=== + */ + +#include "int_lib.h" + +/* Returns: if (a < b) returns 0 + * if (a == b) returns 1 + * if (a > b) returns 2 + */ + +COMPILER_RT_ABI si_int +__ucmpdi2(du_int a, du_int b) +{ + udwords x; + x.all = a; + udwords y; + y.all = b; + if (x.s.high < y.s.high) + return 0; + if (x.s.high > y.s.high) + return 2; + if (x.s.low < y.s.low) + return 0; + if (x.s.low > y.s.low) + return 2; + return 1; +} + +#ifdef __ARM_EABI__ +/* Returns: if (a < b) returns -1 +* if (a == b) returns 0 +* if (a > b) returns 1 +*/ +COMPILER_RT_ABI si_int +__aeabi_ulcmp(di_int a, di_int b) +{ + return __ucmpdi2(a, b) - 1; +} +#endif + |