| //===-- eqdf2vfp.S - Implement eqdf2vfp -----------------------------------===// |
| // |
| // 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 int __eqdf2vfp(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(__eqdf2vfp) |
| #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(eq) |
| moveq r0, #1 // set result register to 1 if equal |
| movne r0, #0 |
| bx lr |
| END_COMPILERRT_FUNCTION(__eqdf2vfp) |
| |
| NO_EXEC_STACK_DIRECTIVE |
| |
