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author | Tobias Grosser <grosser@fim.uni-passau.de> | 2010-07-22 07:46:31 +0000 |
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committer | Tobias Grosser <grosser@fim.uni-passau.de> | 2010-07-22 07:46:31 +0000 |
commit | f96b0063674e6bf72da5429bd49097e33c2325c7 (patch) | |
tree | 6122b17b693e49a1fb9de1cabf099bb67d82414a /test/Analysis/RegionInfo/exit_in_condition.ll | |
parent | 8a89a6ae9c3fb524cda60768e094ba481ac17be1 (diff) | |
download | llvm-f96b0063674e6bf72da5429bd49097e33c2325c7.tar.gz llvm-f96b0063674e6bf72da5429bd49097e33c2325c7.tar.bz2 llvm-f96b0063674e6bf72da5429bd49097e33c2325c7.tar.xz |
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".
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109089 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Analysis/RegionInfo/exit_in_condition.ll')
-rw-r--r-- | test/Analysis/RegionInfo/exit_in_condition.ll | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/test/Analysis/RegionInfo/exit_in_condition.ll b/test/Analysis/RegionInfo/exit_in_condition.ll new file mode 100644 index 0000000000..3b152d2f56 --- /dev/null +++ b/test/Analysis/RegionInfo/exit_in_condition.ll @@ -0,0 +1,38 @@ +; RUN: opt -regions -analyze < %s | FileCheck %s +; RUN: opt -regions -stats < %s |& FileCheck -check-prefix=STAT %s +; 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 internal fastcc zeroext i8 @handle_compress() nounwind { +entry: + br label %outer + +outer: + br label %body + +body: + br i1 1, label %body.i, label %if.end + +body.i: + br i1 1, label %end, label %if.end + +if.end: + br label %if.then64 + +if.then64: + br label %outer + +end: + ret i8 1 +} +; CHECK-NOT: => +; CHECK: [0] entry => <Function Return> +; CHECK-NEXT: [1] outer => end +; STAT: 2 region - The # of regions +; STAT: 1 region - The # of simple regions + +; BBIT: entry, outer, body, body.i, end, if.end, if.then64, +; BBIT: outer, body, body.i, if.end, if.then64, + +; RNIT: entry, outer => end, end, +; RNIT: outer, body, body.i, if.end, if.then64, |