diff options
Diffstat (limited to 'contrib/compiler-rt/lib/builtins/arm/ltdf2vfp.S')
| -rw-r--r-- | contrib/compiler-rt/lib/builtins/arm/ltdf2vfp.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/contrib/compiler-rt/lib/builtins/arm/ltdf2vfp.S b/contrib/compiler-rt/lib/builtins/arm/ltdf2vfp.S new file mode 100644 index 000000000000..8e2928c813d2 --- /dev/null +++ b/contrib/compiler-rt/lib/builtins/arm/ltdf2vfp.S @@ -0,0 +1,37 @@ +//===-- ltdf2vfp.S - Implement ltdf2vfp -----------------------------------===// +// +// 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. +// +//===----------------------------------------------------------------------===// + +#include "../assembly.h" + +// +// extern double __ltdf2vfp(double a, double b); +// +// Returns one iff a < b and neither is NaN. +// Uses Darwin calling convention where double precision arguments are passsed +// like in GPR pairs. +// + .syntax unified + .p2align 2 +DEFINE_COMPILERRT_FUNCTION(__ltdf2vfp) +#if defined(COMPILER_RT_ARMHF_TARGET) + vcmp.f64 d0, d1 +#else + vmov d6, r0, r1 // load r0/r1 pair in double register + vmov d7, r2, r3 // load r2/r3 pair in double register + vcmp.f64 d6, d7 +#endif + vmrs apsr_nzcv, fpscr + ITE(mi) + movmi r0, #1 // set result register to 1 if equal + movpl r0, #0 + bx lr +END_COMPILERRT_FUNCTION(__ltdf2vfp) + +NO_EXEC_STACK_DIRECTIVE + |