| Tim Northover | 820e041 | 2014-05-02 17:25:02 +0000 | [diff] [blame] | 1 | ; RUN: llc -mtriple=arm64 -fp-contract=fast -o - %s | FileCheck %s |
| 2 | |
| 3 | |
| 4 | ; Make sure we don't try to fold an fneg into +0.0, creating an illegal constant |
| 5 | ; -0.0. It's also good, though not essential, that we don't resort to a litpool. |
| 6 | define double @test_fms_fold(double %a, double %b) { |
| 7 | ; CHECK-LABEL: test_fms_fold: |
| 8 | ; CHECK: fmov {{d[0-9]+}}, xzr |
| 9 | ; CHECK: ret |
| 10 | %mul = fmul double %a, 0.000000e+00 |
| 11 | %mul1 = fmul double %b, 0.000000e+00 |
| 12 | %sub = fsub double %mul, %mul1 |
| 13 | ret double %sub |
| 14 | } |