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llvm-mirror/test/Transforms/GlobalDCE/deadblockaddr.ll
Roman Lebedev eda37b998a [SimplifyCFG] MergeBlockIntoPredecessor() 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.
2020-12-17 01:03:49 +03:00

17 lines
473 B
LLVM

; RUN: opt -globaldce -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
; Tests whether globaldce does the right cleanup while removing @bar
; so that a dead BlockAddress reference to foo won't prevent other passes
; to work properly, e.g. simplifycfg
@bar = internal unnamed_addr constant i8* blockaddress(@foo, %L1)
; CHECK-LABEL: foo
; CHECK-NOT: br label %L1
; CHECK: ret void
define void @foo() {
entry:
br label %L1
L1:
ret void
}