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New predicate simplifier!

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Please do not enable, there is still some known miscompile problem.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33066 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nick Lewycky 2007-01-11 02:32:38 +00:00
parent 25919cb780
commit 419c6f5ac8
2 changed files with 1218 additions and 1018 deletions
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2217
lib/Transforms/Scalar/PredicateSimplifier.cpp
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19
test/Transforms/PredicateSimplifier/2007-01-04-SelectSwitch.ll Normal file
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; RUN: llvm-upgrade < %s | llvm-as | opt -predsimplify -disable-output
void %ercMarkCurrMBConcealed(int %comp) {
entry:
%tmp5 = icmp slt int %comp, 0 ; <bool> [#uses=2]
%comp_addr.0 = select bool %tmp5, int 0, int %comp ; <int> [#uses=1]
switch int %comp_addr.0, label %return [
int 0, label %bb
]
bb: ; preds = %entry
br bool %tmp5, label %bb87.bb97_crit_edge.critedge, label %return
bb87.bb97_crit_edge.critedge: ; preds = %bb
ret void
return: ; preds = %bb, %entry
ret void
}