From 53aa4fda49f94920139300227786ac47c393f1ce Mon Sep 17 00:00:00 2001 From: Alexey Samsonov Date: Fri, 14 Feb 2014 09:20:33 +0000 Subject: Move original compiler-rt functions (libgcc replacement) to lib/builtins directory git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@201393 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/builtins/cmpdi2.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 lib/builtins/cmpdi2.c (limited to 'lib/builtins/cmpdi2.c') diff --git a/lib/builtins/cmpdi2.c b/lib/builtins/cmpdi2.c new file mode 100644 index 000000000..52634d9c3 --- /dev/null +++ b/lib/builtins/cmpdi2.c @@ -0,0 +1,51 @@ +/* ===-- cmpdi2.c - Implement __cmpdi2 -------------------------------------=== + * + * 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 __cmpdi2 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 +__cmpdi2(di_int a, di_int b) +{ + dwords x; + x.all = a; + dwords 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_lcmp(di_int a, di_int b) +{ + return __cmpdi2(a, b) - 1; +} +#endif + -- cgit v1.2.3