2020-07-29 19:39:59 +08:00
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; REQUIRES: asserts
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2020-08-06 13:54:59 +08:00
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; RUN: opt -newgvn -S %s | FileCheck %s
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2020-07-29 03:31:57 +08:00
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; XFAIL: *
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; TODO: Currently NewGVN crashes on the function below, see PR42422.
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define void @d() {
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entry:
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br label %for.cond
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for.cond: ; preds = %cleanup20, %entry
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br label %for.cond1
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for.cond1: ; preds = %for.inc17, %for.cond
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%0 = phi i32 [ %inc18, %for.inc17 ], [ 0, %for.cond ]
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%cmp = icmp sle i32 %0, 1
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br i1 %cmp, label %for.body, label %for.end19
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for.body: ; preds = %for.cond1
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br i1 undef, label %for.body3, label %for.body.for.cond4_crit_edge
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for.body.for.cond4_crit_edge: ; preds = %for.body
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br label %for.cond4
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for.body3: ; preds = %for.body
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br label %cleanup14
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for.cond4: ; preds = %cleanup, %for.body.for.cond4_crit_edge
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br i1 undef, label %if.then, label %if.end
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if.then: ; preds = %for.cond4
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br label %cleanup
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if.end: ; preds = %for.cond4
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br label %for.cond6
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for.cond6: ; preds = %for.inc, %if.end
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%1 = phi i64 [ %inc, %for.inc ], [ 0, %if.end ]
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%cmp7 = icmp sle i64 %1, 1
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br i1 %cmp7, label %for.inc, label %for.end9
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for.inc: ; preds = %for.cond6
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%inc = add nsw i64 %1, 1
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br label %for.cond6
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for.end9: ; preds = %for.cond6
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br i1 true, label %if.then11, label %if.end12
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if.then11: ; preds = %for.end9
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br label %cleanup
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if.end12: ; preds = %for.end9
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br label %cleanup
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cleanup: ; preds = %if.end12, %if.then11, %if.then
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%cleanup.dest = phi i32 [ undef, %if.end12 ], [ 1, %if.then11 ], [ 9, %if.then ]
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switch i32 %cleanup.dest, label %cleanup14 [
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i32 0, label %for.cond4
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i32 9, label %for.end13
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]
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for.end13: ; preds = %cleanup
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br label %cleanup14
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cleanup14: ; preds = %for.end13, %cleanup, %for.body3
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%cleanup.dest15 = phi i32 [ 0, %for.end13 ], [ %cleanup.dest, %cleanup ], [ 1, %for.body3 ]
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%cond1 = icmp eq i32 %cleanup.dest15, 0
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br i1 %cond1, label %for.inc17, label %cleanup20
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for.inc17: ; preds = %cleanup14
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%inc18 = add nsw i32 %0, 1
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br label %for.cond1
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for.end19: ; preds = %for.cond1
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br label %cleanup20
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cleanup20: ; preds = %for.end19, %cleanup14
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%cleanup.dest21 = phi i32 [ %cleanup.dest15, %cleanup14 ], [ 0, %for.end19 ]
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%cond = icmp eq i32 %cleanup.dest21, 0
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br i1 %cond, label %for.cond, label %cleanup23
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cleanup23: ; preds = %cleanup20
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ret void
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}
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