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llvm-mirror/test/Transforms/SimplifyCFG/PR25267.ll
Roman Lebedev 2f6c6c6ca4 [SimplifyCFG] DeleteDeadBlock() already knows how to preserve DomTree
... so just ensure that we pass DomTreeUpdater it into it.

Fixes DomTree preservation for a large number of tests,
all of which are marked as such so that they do not regress.
2020-12-18 00:37:21 +03:00

25 lines
489 B
LLVM

; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
define void @f() {
entry:
br label %for.cond
for.cond:
%phi = phi i1 [ false, %entry ], [ true, %for.body ]
%select = select i1 %phi, i32 1, i32 2
br label %for.body
for.body:
switch i32 %select, label %for.cond [
i32 1, label %return
i32 2, label %for.body
]
return:
ret void
}
; CHECK-LABEL: define void @f(
; CHECK: br label %[[LABEL:.*]]
; CHECK: br label %[[LABEL]]