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Add a testcase for switch instruction induction

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llvm-svn: 11965
This commit is contained in:
Chris Lattner 2004-02-28 21:30:39 +00:00
parent a854ddd528
commit ece9d747f2
1 changed files with 36 additions and 0 deletions
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36
test/Regression/Transforms/SimplifyCFG/switch_formation.ll Normal file
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; RUN: llvm-as < %s | opt -simplifycfg | llvm-dis | not grep 'br'
bool %_ZN4llvm11SetCondInst7classofEPKNS_11InstructionE({uint, uint}* %I) {
entry:
%tmp.1.i = getelementptr {uint, uint}* %I, long 0, ubyte 1
%tmp.2.i = load uint* %tmp.1.i
%tmp.2 = seteq uint %tmp.2.i, 14
br bool %tmp.2, label %shortcirc_done.4, label %shortcirc_next.0
shortcirc_next.0: ; preds = %entry
%tmp.6 = seteq uint %tmp.2.i, 15 ; <bool> [#uses=1]
br bool %tmp.6, label %shortcirc_done.4, label %shortcirc_next.1
shortcirc_next.1: ; preds = %shortcirc_next.0
%tmp.11 = seteq uint %tmp.2.i, 16 ; <bool> [#uses=1]
br bool %tmp.11, label %shortcirc_done.4, label %shortcirc_next.2
shortcirc_next.2: ; preds = %shortcirc_next.1
%tmp.16 = seteq uint %tmp.2.i, 17 ; <bool> [#uses=1]
br bool %tmp.16, label %shortcirc_done.4, label %shortcirc_next.3
shortcirc_next.3: ; preds = %shortcirc_next.2
%tmp.21 = seteq uint %tmp.2.i, 18 ; <bool> [#uses=1]
br bool %tmp.21, label %shortcirc_done.4, label %shortcirc_next.4
shortcirc_next.4: ; preds = %shortcirc_next.3
%tmp.26 = seteq uint %tmp.2.i, 19 ; <bool> [#uses=1]
br label %UnifiedReturnBlock
shortcirc_done.4: ; preds = %entry, %shortcirc_next.0, %shortcirc_next.1, %shortcirc_next.2, %shortcirc_next.3
br label %UnifiedReturnBlock
UnifiedReturnBlock: ; preds = %shortcirc_next.4, %shortcirc_done.4
%UnifiedRetVal = phi bool [ %tmp.26, %shortcirc_next.4 ], [ true, %shortcirc_done.4 ] ; <bool> [#uses=1]
ret bool %UnifiedRetVal
}