projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a4d82fc JJ |
1 | //===-- eqdf2vfp.S - Implement eqdf2vfp -----------------------------------===// |
| 2 | // | |
| 3 | // The LLVM Compiler Infrastructure | |
| 4 | // | |
| 5 | // This file is dual licensed under the MIT and the University of Illinois Open | |
| 6 | // Source Licenses. See LICENSE.TXT for details. | |
| 7 | // | |
| 8 | //===----------------------------------------------------------------------===// | |
| 9 | ||
| 10 | #include "../assembly.h" | |
| 11 | ||
| 12 | // | |
| 13 | // extern int __eqdf2vfp(double a, double b); | |
| 14 | // | |
| 15 | // Returns one iff a == b and neither is NaN. | |
| 16 | // Uses Darwin calling convention where double precision arguments are passsed | |
| 17 | // like in GPR pairs. | |
| 18 | // | |
| 19 | .syntax unified | |
| 92a42be0 | 20 | .p2align 2 |
| 1a4d82fc | 21 | DEFINE_COMPILERRT_FUNCTION(__eqdf2vfp) |
| 7cac9316 XL |
22 | #if defined(COMPILER_RT_ARMHF_TARGET) |
| 23 | vcmp.f64 d0, d1 | |
| 24 | #else | |
| 1a4d82fc JJ |
25 | vmov d6, r0, r1 // load r0/r1 pair in double register |
| 26 | vmov d7, r2, r3 // load r2/r3 pair in double register | |
| 27 | vcmp.f64 d6, d7 | |
| 7cac9316 | 28 | #endif |
| 1a4d82fc | 29 | vmrs apsr_nzcv, fpscr |
| 2c00a5a8 | 30 | ITE(eq) |
| 1a4d82fc JJ |
31 | moveq r0, #1 // set result register to 1 if equal |
| 32 | movne r0, #0 | |
| 33 | bx lr | |
| 34 | END_COMPILERRT_FUNCTION(__eqdf2vfp) | |
| 3157f602 XL |
35 | |
| 36 | NO_EXEC_STACK_DIRECTIVE | |
| 37 |