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llvm-project/llvm/test/Analysis/RegionInfo/multiple_exiting_edge.ll

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Add new RegionInfo pass. The RegionInfo pass detects single entry single exit regions in a function, where a region is defined as any subgraph that is connected to the remaining graph at only two spots. Furthermore an hierarchical region tree is built. Use it by calling "opt -regions analyze" or "opt -view-regions". llvm-svn: 109089
2010-07-22 15:46:31 +08:00
; RUN: opt -regions -print-region-style=bb -analyze < %s |& FileCheck -check-prefix=BBIT %s
; RUN: opt -regions -print-region-style=rn -analyze < %s |& FileCheck -check-prefix=RNIT %s
define void @normal_condition_0() nounwind {
bb38: ; preds = %bb34, %bb34, %bb37
switch i32 undef, label %bb42 [
i32 67, label %bb42
i32 90, label %bb41
]
bb41: ; preds = %bb38
br label %bb42
bb42: ; preds = %bb38, %bb38, %bb41
ret void
}
; BBIT: bb38, bb42, bb41,
; BBIT: bb38, bb41,
; RNIT: bb38 => bb42, bb42,
; RNIT: bb38, bb41,
define void @normal_condition_1() nounwind {
bb38: ; preds = %bb34, %bb34, %bb37
switch i32 undef, label %bb41 [
i32 67, label %bb42
i32 90, label %bb42
]
bb41: ; preds = %bb38
br label %bb42
bb42: ; preds = %bb38, %bb38, %bb41
ret void
}
; BBIT: bb38, bb41, bb42,
; BBIT: bb38, bb41,
; RNIT: bb38 => bb42, bb42,
; RNIT: bb38, bb41,