atomic8.ll
5.95 KB
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; RUN: llc < %s -O0 -mtriple=x86_64-- -mcpu=corei7 -verify-machineinstrs | FileCheck %s --check-prefix X64
; RUN: llc < %s -O0 -mtriple=i686-- -mcpu=corei7 -verify-machineinstrs | FileCheck %s --check-prefix X32
@sc8 = external global i8
define void @atomic_fetch_add8() nounwind {
; X64-LABEL: atomic_fetch_add8:
; X32-LABEL: atomic_fetch_add8:
entry:
; 32-bit
%t1 = atomicrmw add i8* @sc8, i8 1 acquire
; X64: lock
; X64: incb
; X32: lock
; X32: incb
%t2 = atomicrmw add i8* @sc8, i8 3 acquire
; X64: lock
; X64: addb $3
; X32: lock
; X32: addb $3
%t3 = atomicrmw add i8* @sc8, i8 5 acquire
; X64: lock
; X64: xaddb
; X32: lock
; X32: xaddb
%t4 = atomicrmw add i8* @sc8, i8 %t3 acquire
; X64: lock
; X64: addb
; X32: lock
; X32: addb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_sub8() nounwind {
; X64-LABEL: atomic_fetch_sub8:
; X32-LABEL: atomic_fetch_sub8:
%t1 = atomicrmw sub i8* @sc8, i8 1 acquire
; X64: lock
; X64: decb
; X32: lock
; X32: decb
%t2 = atomicrmw sub i8* @sc8, i8 3 acquire
; X64: lock
; X64: subb $3
; X32: lock
; X32: subb $3
%t3 = atomicrmw sub i8* @sc8, i8 5 acquire
; X64: lock
; X64: xaddb
; X32: lock
; X32: xaddb
%t4 = atomicrmw sub i8* @sc8, i8 %t3 acquire
; X64: lock
; X64: subb
; X32: lock
; X32: subb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_and8() nounwind {
; X64-LABEL: atomic_fetch_and8:
; X32-LABEL: atomic_fetch_and8:
%t1 = atomicrmw and i8* @sc8, i8 3 acquire
; X64: lock
; X64: andb $3
; X32: lock
; X32: andb $3
%t2 = atomicrmw and i8* @sc8, i8 5 acquire
; X64: andb
; X64: lock
; X64: cmpxchgb
; X32: andb
; X32: lock
; X32: cmpxchgb
%t3 = atomicrmw and i8* @sc8, i8 %t2 acquire
; X64: lock
; X64: andb
; X32: lock
; X32: andb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_or8() nounwind {
; X64-LABEL: atomic_fetch_or8:
; X32-LABEL: atomic_fetch_or8:
%t1 = atomicrmw or i8* @sc8, i8 3 acquire
; X64: lock
; X64: orb $3
; X32: lock
; X32: orb $3
%t2 = atomicrmw or i8* @sc8, i8 5 acquire
; X64: orb
; X64: lock
; X64: cmpxchgb
; X32: orb
; X32: lock
; X32: cmpxchgb
%t3 = atomicrmw or i8* @sc8, i8 %t2 acquire
; X64: lock
; X64: orb
; X32: lock
; X32: orb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_xor8() nounwind {
; X64-LABEL: atomic_fetch_xor8:
; X32-LABEL: atomic_fetch_xor8:
%t1 = atomicrmw xor i8* @sc8, i8 3 acquire
; X64: lock
; X64: xorb $3
; X32: lock
; X32: xorb $3
%t2 = atomicrmw xor i8* @sc8, i8 5 acquire
; X64: xorb
; X64: lock
; X64: cmpxchgb
; X32: xorb
; X32: lock
; X32: cmpxchgb
%t3 = atomicrmw xor i8* @sc8, i8 %t2 acquire
; X64: lock
; X64: xorb
; X32: lock
; X32: xorb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_nand8(i8 %x) nounwind {
; X64-LABEL: atomic_fetch_nand8:
; X32-LABEL: atomic_fetch_nand8:
%t1 = atomicrmw nand i8* @sc8, i8 %x acquire
; X64: andb
; X64: notb
; X64: lock
; X64: cmpxchgb
; X32: andb
; X32: notb
; X32: lock
; X32: cmpxchgb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_max8(i8 %x) nounwind {
; X64-LABEL: atomic_fetch_max8:
; X32-LABEL: atomic_fetch_max8:
%t1 = atomicrmw max i8* @sc8, i8 %x acquire
; X64: movb
; X64: movb
; X64: subb
; X64: lock
; X64: cmpxchgb
; X32: movb
; X32: movb
; X32: subb
; X32: lock
; X32: cmpxchgb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_min8(i8 %x) nounwind {
; X64-LABEL: atomic_fetch_min8:
; X32-LABEL: atomic_fetch_min8:
%t1 = atomicrmw min i8* @sc8, i8 %x acquire
; X64: movb
; X64: movb
; X64: subb
; X64: lock
; X64: cmpxchgb
; X32: movb
; X32: movb
; X32: subb
; X32: lock
; X32: cmpxchgb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_umax8(i8 %x) nounwind {
; X64-LABEL: atomic_fetch_umax8:
; X32-LABEL: atomic_fetch_umax8:
%t1 = atomicrmw umax i8* @sc8, i8 %x acquire
; X64: movb
; X64: movb
; X64: subb
; X64: lock
; X64: cmpxchgb
; X32: movb
; X32: movb
; X32: subb
; X32: lock
; X32: cmpxchgb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_umin8(i8 %x) nounwind {
; X64-LABEL: atomic_fetch_umin8:
; X32-LABEL: atomic_fetch_umin8:
%t1 = atomicrmw umin i8* @sc8, i8 %x acquire
; X64: movb
; X64: movb
; X64: subb
; X64: lock
; X64: cmpxchgb
; X32: movb
; X32: movb
; X32: subb
; X32: lock
; X32: cmpxchgb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_cmpxchg8() nounwind {
; X64-LABEL: atomic_fetch_cmpxchg8:
; X32-LABEL: atomic_fetch_cmpxchg8:
%t1 = cmpxchg i8* @sc8, i8 0, i8 1 acquire acquire
; X64: lock
; X64: cmpxchgb
; X32: lock
; X32: cmpxchgb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_store8(i8 %x) nounwind {
; X64-LABEL: atomic_fetch_store8:
; X32-LABEL: atomic_fetch_store8:
store atomic i8 %x, i8* @sc8 release, align 4
; X64-NOT: lock
; X64: movb
; X32-NOT: lock
; X32: movb
ret void
; X64: ret
; X32: ret
}
define void @atomic_fetch_swap8(i8 %x) nounwind {
; X64-LABEL: atomic_fetch_swap8:
; X32-LABEL: atomic_fetch_swap8:
%t1 = atomicrmw xchg i8* @sc8, i8 %x acquire
; X64-NOT: lock
; X64: xchgb
; X32-NOT: lock
; X32: xchgb
ret void
; X64: ret
; X32: ret
}