Fix llvm powi intrinsic calls in fastmath.jl (#44580)

Author: pchintalapudi

base/fastmath.jl

@@ -279,8 +279,8 @@ exp10_fast(x::Union{Float32,Float64}) = Base.Math.exp10_fast(x)
 
 # builtins
 
-pow_fast(x::Float32, y::Integer) = ccall("llvm.powi.f32", llvmcall, Float32, (Float32, Int32), x, y)
-pow_fast(x::Float64, y::Integer) = ccall("llvm.powi.f64", llvmcall, Float64, (Float64, Int32), x, y)
+pow_fast(x::Float32, y::Integer) = ccall("llvm.powi.f32.i32", llvmcall, Float32, (Float32, Int32), x, y)
+pow_fast(x::Float64, y::Integer) = ccall("llvm.powi.f64.i32", llvmcall, Float64, (Float64, Int32), x, y)
 pow_fast(x::FloatTypes, ::Val{p}) where {p} = pow_fast(x, p) # inlines already via llvm.powi
 @inline pow_fast(x, v::Val) = Base.literal_pow(^, x, v)