llvm.org GIT mirror llvm / release_40 test / CodeGen / AArch64 / fcopysign.ll
release_40

Tree @release_40 (Download .tar.gz)

fcopysign.ll @release_40raw · history · blame

; RUN: llc -o - %s | FileCheck %s
; Check that selection dag legalization of fcopysign works in cases with
; different modes for the arguments.
target triple = "aarch64--"

declare fp128 @llvm.copysign.f128(fp128, fp128)

@val = global double zeroinitializer, align 8

; CHECK-LABEL: copysign0
; CHECK: ldr [[REG:x[0-9]+]], [x8, :lo12:val]
; CHECK: and [[ANDREG:x[0-9]+]], [[REG]], #0x8000000000000000
; CHECK: lsr x[[LSRREGNUM:[0-9]+]], [[ANDREG]], #56
; CHECK: bfxil w[[LSRREGNUM]], w{{[0-9]+}}, #0, #7
; CHECK: strb w[[LSRREGNUM]],
; CHECK: ldr q{{[0-9]+}},
define fp128 @copysign0() {
entry:
  %v = load double, double* @val, align 8
  %conv = fpext double %v to fp128
  %call = tail call fp128 @llvm.copysign.f128(fp128 0xL00000000000000007FFF000000000000, fp128 %conv) #2
  ret fp128 %call
}