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TheRock/compiler/amd-llvm/llvm/test/tools/llvm-reduce/remove-global-vars.ll
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derek.holloway 7502bf64a4
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57 lines
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LLVM

; Test that llvm-reduce can remove uninteresting Global Variables as well as
; their direct uses (which in turn are replaced with '0').
; RUN: llvm-reduce --abort-on-invalid-reduction --delta-passes=global-variables,global-initializers --test FileCheck --test-arg --check-prefixes=CHECK-ALL,CHECK-INTERESTINGNESS --test-arg %s --test-arg --input-file %s -o %t
; RUN: FileCheck --check-prefixes=CHECK-ALL,CHECK-FINAL --implicit-check-not=uninteresting %s < %t
$interesting5 = comdat any
; CHECK-INTERESTINGNESS: @interesting = {{.*}}global i32{{.*}}, align 4
; CHECK-INTERESTINGNESS: @interesting2 = global i32 0, align 4
; CHECK-INTERESTINGNESS: @interesting3 = {{.*}}global i32{{.*}}, align 4
; CHECK-INTERESTINGNESS: @interesting4 = {{.*}}constant i32{{.*}}, align 4
; CHECK-INTERESTINGNESS: @interesting5 = {{.*}}global i32{{.*}}, align 4
; CHECK-FINAL: @interesting = external global i32, align 4
; CHECK-FINAL: @interesting2 = global i32 0, align 4
; CHECK-FINAL: @interesting3 = external global i32, align 4
; CHECK-FINAL: @interesting4 = external dso_local constant i32, align 4
; CHECK-FINAL: @interesting5 = external global i32, align 4
@interesting = global i32 0, align 4
@interesting2 = global i32 0, align 4
@interesting3 = external global i32, align 4
@interesting4 = private constant i32 2, align 4
@interesting5 = global i32 2, align 4, comdat
@uninteresting = global i32 1, align 4
@uninteresting2 = external global i32, align 4
define i32 @main() {
entry:
%0 = load i32, ptr @uninteresting, align 4
; CHECK-INTERESTINGNESS: store i32 {{.*}}, ptr @interesting, align 4
; CHECK-FINAL: store i32 %0, ptr @interesting, align 4
store i32 %0, ptr @interesting, align 4
; CHECK-INTERESTINGNESS: store i32 {{.*}}, ptr @interesting3, align 4
; CHECK-FINAL: store i32 %0, ptr @interesting3, align 4
store i32 %0, ptr @interesting3, align 4
; CHECK-ALL: load i32, ptr @interesting, align 4
%1 = load i32, ptr @interesting, align 4
store i32 %1, ptr @uninteresting, align 4
; CHECK-ALL: load i32, ptr @interesting3, align 4
%2 = load i32, ptr @interesting3, align 4
store i32 %2, ptr @uninteresting2, align 4
; CHECK-ALL: store i32 5, ptr @interesting, align 4
store i32 5, ptr @interesting, align 4
; CHECK-ALL: store i32 5, ptr @interesting3, align 4
store i32 5, ptr @interesting3, align 4
ret i32 0
}