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llvm-mirror/test/Other/opt-twice.ll
Keno Fischer 5b8c01f61a [llc/opt] Add an option to run all passes twice
Summary: Lately, I have submitted a number of patches to fix bugs that
only occurred when using the same pass manager to compile multiple
modules (generally these bugs are failure to reset some persistent
state). Unfortunately I don't think there is currently a way to test
that from the command line. This adds a very simple flag to both llc
and opt, under which the tools will simply re-run their respective
pass pipelines using the same pass manager on (a clone of the same
module). Additionally, we verify that both outputs are bitwise the
same.

Reviewers: yaron.keren

Subscribers: loladiro, yaron.keren, kcc, llvm-commits

Differential Revision: http://reviews.llvm.org/D14965

llvm-svn: 254774
2015-12-04 21:56:46 +00:00

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335 B
LLVM

; The pass here doesn't matter (we use deadargelim), but test
; that the -run-twice options exists, generates output, and
; doesn't crash
; RUN: opt -run-twice -deadargelim -S < %s | FileCheck %s
; CHECK: define internal void @test
define internal {} @test() {
ret {} undef
}
define void @caller() {
call {} @test()
ret void
}