third_party/llvm-7.0/llvm/test/CodeGen/X86/bitcast2.ll

; RUN: llc < %s -mtriple=x86_64-- -mattr=-avx | grep movq | count 2
; RUN: llc < %s -mtriple=x86_64-- -mattr=-avx | not grep rsp

define i64 @test1(double %A) {
   %B = bitcast double %A to i64
   ret i64 %B
}

define double @test2(i64 %A) {
   %B = bitcast i64 %A to double
   ret double %B
}