47 lines
1.6 KiB
LLVM
47 lines
1.6 KiB
LLVM
; RUN: opt -indvars -S < %s | FileCheck %s
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@b = common global i32 0, align 4
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@c = common global i32 0, align 4
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@a = common global i32 0, align 4
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declare void @abort() #1
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; Function Attrs: nounwind ssp uwtable
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define i32 @main() {
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entry:
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%a.promoted13 = load i32, i32* @a, align 4
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br label %for.cond1.preheader
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for.cond1.preheader: ; preds = %entry, %for.end
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%or.lcssa14 = phi i32 [ %a.promoted13, %entry ], [ %or.lcssa, %for.end ]
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%d.010 = phi i32 [ 1, %entry ], [ 0, %for.end ]
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br label %for.body3
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for.body3: ; preds = %for.cond1.preheader, %for.body3
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%inc12 = phi i32 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ]
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%or11 = phi i32 [ %or.lcssa14, %for.cond1.preheader ], [ %or, %for.body3 ]
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; CHECK-NOT: sub nuw i32 %inc12, %d.010
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; CHECK: sub i32 %inc12, %d.010
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%add = sub i32 %inc12, %d.010
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%or = or i32 %or11, %add
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%inc = add i32 %inc12, 1
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br i1 false, label %for.body3, label %for.end
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for.end: ; preds = %for.body3
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%or.lcssa = phi i32 [ %or, %for.body3 ]
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br i1 false, label %for.cond1.preheader, label %for.end6
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for.end6: ; preds = %for.end
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%or.lcssa.lcssa = phi i32 [ %or.lcssa, %for.end ]
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store i32 %or.lcssa.lcssa, i32* @a, align 4
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%cmp7 = icmp eq i32 %or.lcssa.lcssa, -1
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br i1 %cmp7, label %if.end, label %if.then
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if.then: ; preds = %for.end6
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tail call void @abort() #2
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unreachable
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if.end: ; preds = %for.end6
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ret i32 0
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}
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