*this, Intrinsic::fma, Intrinsic::experimental_constrained_fma, HalfTy,
{EmitScalarExpr(E->getArg(1)), EmitScalarExpr(E->getArg(2)), Ops[0]});
case NEON::BI__builtin_neon_vfmsh_f16: {
- // FIXME: This should be an fneg instruction:
- Value *Zero = llvm::ConstantFP::getZeroValueForNegation(HalfTy);
- Value* Sub = Builder.CreateFSub(Zero, EmitScalarExpr(E->getArg(1)), "vsubh");
+ Value* Neg = Builder.CreateFNeg(EmitScalarExpr(E->getArg(1)), "vsubh");
// NEON intrinsic puts accumulator first, unlike the LLVM fma.
return emitCallMaybeConstrainedFPBuiltin(
*this, Intrinsic::fma, Intrinsic::experimental_constrained_fma, HalfTy,
- {Sub, EmitScalarExpr(E->getArg(2)), Ops[0]});
+ {Neg, EmitScalarExpr(E->getArg(2)), Ops[0]});
}
case NEON::BI__builtin_neon_vaddd_s64:
case NEON::BI__builtin_neon_vaddd_u64:
}
// COMMON-LABEL: test_vfmsh_f16
-// UNCONSTRAINED: [[SUB:%.*]] = fsub half 0xH8000, %b
-// CONSTRAINED: [[SUB:%.*]] = call half @llvm.experimental.constrained.fsub.f16(half 0xH8000, half %b, metadata !"round.tonearest", metadata !"fpexcept.strict")
+// COMMONIR: [[SUB:%.*]] = fneg half %b
// UNCONSTRAINED: [[ADD:%.*]] = call half @llvm.fma.f16(half [[SUB]], half %c, half %a)
// CONSTRAINED: [[ADD:%.*]] = call half @llvm.experimental.constrained.fma.f16(half [[SUB]], half %c, half %a, metadata !"round.tonearest", metadata !"fpexcept.strict")
// COMMONIR: ret half [[ADD]]
}
// CHECK-LABEL: test_vfmsh_f16
-// CHECK: [[SUB:%.*]] = fsub half 0xH8000, %b
+// CHECK: [[SUB:%.*]] = fneg half %b
// CHECK: [[ADD:%.*]] = call half @llvm.fma.f16(half [[SUB]], half %c, half %a)
// CHECK: ret half [[ADD]]
float16_t test_vfmsh_f16(float16_t a, float16_t b, float16_t c) {