| //===-- ltdf2vfp.S - Implement ltdf2vfp -----------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #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 |
| |
