1*9880d681SAndroid Build Coastguard Worker; RUN: llc -mtriple=arm64 -fp-contract=fast -o - %s | FileCheck %s 2*9880d681SAndroid Build Coastguard Worker 3*9880d681SAndroid Build Coastguard Worker 4*9880d681SAndroid Build Coastguard Worker; Make sure we don't try to fold an fneg into +0.0, creating an illegal constant 5*9880d681SAndroid Build Coastguard Worker; -0.0. It's also good, though not essential, that we don't resort to a litpool. 6*9880d681SAndroid Build Coastguard Workerdefine double @test_fms_fold(double %a, double %b) { 7*9880d681SAndroid Build Coastguard Worker; CHECK-LABEL: test_fms_fold: 8*9880d681SAndroid Build Coastguard Worker; CHECK: fmov {{d[0-9]+}}, xzr 9*9880d681SAndroid Build Coastguard Worker; CHECK: ret 10*9880d681SAndroid Build Coastguard Worker %mul = fmul double %a, 0.000000e+00 11*9880d681SAndroid Build Coastguard Worker %mul1 = fmul double %b, 0.000000e+00 12*9880d681SAndroid Build Coastguard Worker %sub = fsub double %mul, %mul1 13*9880d681SAndroid Build Coastguard Worker ret double %sub 14*9880d681SAndroid Build Coastguard Worker}