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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-- -mattr=sse2 | FileCheck %s --check-prefixes=ALL,OPT
; RUN: llc < %s -mtriple=i686-- -mattr=sse2 -O0 | FileCheck %s --check-prefixes=ALL,NOOPT
@x = external dso_local global double
define void @foo() nounwind {
; OPT-LABEL: foo:
; OPT: # %bb.0:
; OPT-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; OPT-NEXT: xorps %xmm0, %xmm0
; OPT-NEXT: movsd %xmm0, x
; OPT-NEXT: movsd %xmm0, x
; OPT-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; OPT-NEXT: retl
;
; NOOPT-LABEL: foo:
; NOOPT: # %bb.0:
; NOOPT-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; NOOPT-NEXT: xorps %xmm0, %xmm0
; NOOPT-NEXT: movsd %xmm0, x
; NOOPT-NEXT: xorps %xmm0, %xmm0
; NOOPT-NEXT: movsd %xmm0, x
; NOOPT-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; NOOPT-NEXT: retl
%a = load volatile double, ptr @x
store volatile double 0.0, ptr @x
store volatile double 0.0, ptr @x
%b = load volatile double, ptr @x
ret void
}
define void @bar() nounwind {
; ALL-LABEL: bar:
; ALL: # %bb.0:
; ALL-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero
; ALL-NEXT: retl
%c = load volatile double, ptr @x
ret void
}
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