| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=arm64 -fp-contract=fast -o - %s | FileCheck %s |
| |
| |
| ; Make sure we don't try to fold an fneg into +0.0, creating an illegal constant |
| ; -0.0. It's also good, though not essential, that we don't resort to a litpool. |
| define double @test_fms_fold(double %a, double %b) { |
| ; CHECK-LABEL: test_fms_fold: |
| ; CHECK: // %bb.0: |
| ; CHECK-NEXT: movi d2, #0000000000000000 |
| ; CHECK-NEXT: fmul d1, d1, d2 |
| ; CHECK-NEXT: fnmsub d0, d0, d2, d1 |
| ; CHECK-NEXT: ret |
| %mul = fmul double %a, 0.000000e+00 |
| %mul1 = fmul double %b, 0.000000e+00 |
| %sub = fsub double %mul, %mul1 |
| ret double %sub |
| } |
