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llvm-mirror/test/Other/available-externally-lto.ll
Leonard Chan 6986b2400c [clang][NewPM] Do not eliminate available_externally durng -O2 -flto runs
This fixes CodeGen/available-externally-suppress.c when the new pass manager is
turned on by default. available_externally was not emitted during -O2 -flto
runs when it should still be retained for link time inlining purposes. This can
be fixed by checking that we aren't LTOPrelinking when adding the
EliminateAvailableExternallyPass.

Differential Revision: https://reviews.llvm.org/D63580

llvm-svn: 363971
2019-06-20 19:44:51 +00:00

24 lines
687 B
LLVM

; Ensure that we don't emit available_externally functions at -O2, unless
; -flto is present in which case we should preserve them for link-time inlining
; decisions.
; RUN: opt < %s -S -passes='default<O2>' | FileCheck %s
; RUN: opt < %s -S -passes='lto-pre-link<O2>' | FileCheck %s --check-prefix=LTO
@x = common local_unnamed_addr global i32 0, align 4
define void @test() local_unnamed_addr #0 {
entry:
tail call void @f0(i32 17)
ret void
}
; CHECK: declare void @f0(i32)
; LTO: define available_externally void @f0(i32 %y)
define available_externally void @f0(i32 %y) local_unnamed_addr #0 {
entry:
store i32 %y, i32* @x, align 4
ret void
}
attributes #0 = { noinline }