llvm-project/llvm/test/CodeGen/X86/avx-bitcast.ll

14 lines
359 B
LLVM

; RUN: llc < %s -O0 -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s
define i64 @bitcasti64tof64() {
; CHECK-LABEL: bitcasti64tof64:
; CHECK: # %bb.0:
; CHECK: vmovsd {{.*#+}} xmm0 = mem[0],zero
; CHECK-NEXT: vmovq %xmm0, %rax
; CHECK-NEXT: retq
%a = load double, double* undef
%b = bitcast double %a to i64
ret i64 %b
}