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llvm-project/llvm/test/Analysis/RegionInfo/loops_1.ll

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Revert the test moves from 176733. Use "REQUIRES: asserts" instead. llvm-svn: 176873
2013-03-13 00:27:52 +08:00
; REQUIRES: asserts
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 -analyze < %s | FileCheck %s
Convert the uses of '|&' to use '2>&1 |' instead, which works on old versions of Bash. In addition, I can back out the change to the lit built-in shell test runner to support this. This should fix the majority of fallout on Darwin, but I suspect there will be a few straggling issues. llvm-svn: 159544
2012-07-03 02:37:59 +08:00
; RUN: opt -regions -stats < %s 2>&1 | FileCheck -check-prefix=STAT %s
; RUN: opt -regions -print-region-style=bb -analyze < %s 2>&1 | FileCheck -check-prefix=BBIT %s
; RUN: opt -regions -print-region-style=rn -analyze < %s 2>&1 | FileCheck -check-prefix=RNIT %s
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
define internal fastcc zeroext i8 @loops_1() nounwind {
entry:
br i1 1, label %outer , label %a
a:
br label %body
outer:
br label %body
body:
br i1 1, label %land, label %if
land:
br i1 1, label %exit, label %end
exit:
br i1 1, label %if, label %end
if:
br label %outer
end:
ret i8 1
}
; CHECK-NOT: =>
; CHECK: [0] entry => <Function Return>
; CHECK-NEXT: [1] entry => end
; STAT: 2 region - The # of regions
; BBIT: entry, outer, body, land, exit, if, end, a,
; BBIT: entry, outer, body, land, exit, if, a,
; RNIT: entry => end, end,
; RNIT: entry, outer, body, land, exit, if, a,