derek.holloway
7502bf64a4
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73 lines
2.5 KiB
LLVM
73 lines
2.5 KiB
LLVM
; RUN: opt -disable-output -aa-pipeline=basic-aa -passes='loop-mssa(licm),print<memoryssa>' < %s 2>&1 | FileCheck %s
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@a = external dso_local global i16, align 1
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@c = external dso_local global i16, align 1
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; CHECK-LABEL: @main()
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; CHECK: entry:
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; CHECK-NEXT: %res.addr.i = alloca i16
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; CHECK-NEXT: ; MemoryUse(liveOnEntry)
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; CHECK-NEXT: %c.promoted = load i16, ptr @c
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; CHECK-NEXT: br label %for.cond.i
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; CHECK: for.cond.i:
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; CHECK-NEXT: ; [[NO5:.*]] = MemoryPhi({entry,liveOnEntry},{f.exit.i,[[NO5]]})
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; CHECK-NEXT: %inc.i1 = phi i16 [ %inc.i, %f.exit.i ], [ %c.promoted, %entry ]
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; CHECK-NEXT: %inc.i = add nsw i16 %inc.i1, 1
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; CHECK-NEXT: br i1 false, label %f.exit.thread.i, label %f.exit.i
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; CHECK: f.exit.thread.i:
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; CHECK-NEXT: %inc.i.lcssa = phi i16 [ %inc.i, %for.cond.i ]
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; CHECK-NEXT: ; [[NO6:.*]] = MemoryDef([[NO5]])
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; CHECK-NEXT: store i16 %inc.i.lcssa, ptr @c, align 1
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; CHECK-NEXT: ; [[NO2:.*]] = MemoryDef([[NO6]])
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; CHECK-NEXT: store i16 1, ptr @a, align 1
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; CHECK-NEXT: ; MemoryUse([[NO6]])
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; CHECK-NEXT: %tmp2 = load i16, ptr @c, align 1
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; CHECK-NEXT: br label %g.exit
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; CHECK: f.exit.i
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; CHECK-NEXT: br i1 false, label %g.exit.loopexit, label %for.cond.i
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; CHECK: g.exit.loopexit:
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; CHECK-NEXT: %inc.i.lcssa2 = phi i16 [ %inc.i, %f.exit.i ]
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; CHECK-NEXT: ; [[NO7:.*]] = MemoryDef([[NO5]])
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; CHECK-NEXT: store i16 %inc.i.lcssa2, ptr @c, align 1
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; CHECK-NEXT: br label %g.exit
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; CHECK: g.exit
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; CHECK-NEXT: ; [[NO4:.*]] = MemoryPhi({f.exit.thread.i,[[NO2]]},{g.exit.loopexit,[[NO7]]})
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; CHECK-NEXT: ; MemoryUse([[NO4]])
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; CHECK-NEXT: %tmp1 = load i16, ptr @c, align 1
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; CHECK-NEXT: ; [[NO3:.*]] = MemoryDef([[NO4]])
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; CHECK-NEXT: store i16 %tmp1, ptr %res.addr.i, align 1
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; CHECK-NEXT: ret void
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define dso_local void @main() {
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entry:
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%res.addr.i = alloca i16, align 1
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br label %for.cond.i
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for.cond.i: ; preds = %f.exit.i, %entry
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%tmp0 = load i16, ptr @c, align 1
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%inc.i = add nsw i16 %tmp0, 1
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store i16 %inc.i, ptr @c, align 1
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br i1 false, label %f.exit.thread.i, label %f.exit.i
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f.exit.thread.i: ; preds = %for.cond.i
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store i16 1, ptr @a, align 1
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%tmp2 = load i16, ptr @c, align 1
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br label %g.exit
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f.exit.i: ; preds = %for.cond.i
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br i1 false, label %g.exit, label %for.cond.i
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g.exit: ; preds = %f.exit.i, %f.exit.thread.i
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%tmp1 = load i16, ptr @c, align 1
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store i16 %tmp1, ptr %res.addr.i, align 1
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ret void
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}
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