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! Verify that`-O{n}` is indeed taken into account when defining the LLVM optimization/middle-end pass pipeline.
! RUN: %flang -S -O0 %s -Xflang -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O0
! RUN: %flang -S -O0 %s -flto -Xflang -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O0-ANYLTO
! RUN: %flang -S -O0 %s -flto=thin -Xflang -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O0-ANYLTO
! RUN: %flang_fc1 -S -O0 %s -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O0
! RUN: %flang_fc1 -S -O0 %s -flto=full -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O0-ANYLTO
! RUN: %flang_fc1 -S -O0 %s -flto=thin -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O0-ANYLTO
! RUN: %flang -S -O2 %s -Xflang -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O2
! RUN: %flang -S -O2 %s -flto -Xflang -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O2-LTO
! RUN: %flang -S -O2 %s -flto=thin -Xflang -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O2-THINLTO
! RUN: %flang_fc1 -S -O2 %s -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O2
! RUN: %flang_fc1 -S -O2 %s -flto=full -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O2-LTO
! RUN: %flang_fc1 -S -O2 %s -flto=thin -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O2-THINLTO
! Verify that only the left-most `-O{n}` is used
! RUN: %flang -S -O2 -O0 %s -Xflang -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O0
! RUN: %flang_fc1 -S -O2 -O0 %s -fdebug-pass-manager -o /dev/null 2>&1 | FileCheck %s --check-prefix=CHECK-O0
! CHECK-O0-NOT: Running pass: SimplifyCFGPass on simple_loop_
! CHECK-O0: Running analysis: TargetLibraryAnalysis on simple_loop_
! CHECK-O0-ANYLTO: Running pass: CanonicalizeAliasesPass on [module]
! CHECK-O0-ANYLTO: Running pass: NameAnonGlobalPass on [module]
! CHECK-O2: Running pass: SimplifyCFGPass on simple_loop_
! CHECK-O2-LTO-NOT: Running pass: EliminateAvailableExternallyPass
! CHECK-O2-LTO: Running pass: CanonicalizeAliasesPass on [module]
! CHECK-O2-LTO: Running pass: NameAnonGlobalPass on [module]
! CHECK-O2-THINLTO-NOT: Running pass: LoopVectorizePass
! CHECK-O2-THINLTO: Running pass: CanonicalizeAliasesPass on [module]
! CHECK-O2-THINLTO: Running pass: NameAnonGlobalPass on [module]
subroutine simple_loop
integer :: i
do i=1,5
end do
end subroutine
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