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16 lines
311 B
16 lines
311 B
; Ensure that adjacent duplicated barriers are not removed at -O0.
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; RUN: llc -O0 < %s -mtriple=armv7 -mattr=+db | FileCheck %s
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define i32 @t1() {
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entry:
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fence seq_cst
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fence seq_cst
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fence seq_cst
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ret i32 0
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}
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; CHECK: @ %bb.0: @ %entry
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; CHECK-NEXT: dmb ish
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; CHECK-NEXT: dmb ish
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; CHECK-NEXT: dmb ish
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