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Other objects can never reference the MergedGlobals symbol so external linkage is never needed. Using private instead of internal linkage means the object is more similar to what it looks like when global merging is not enabled, with the only difference being that the merged variables are addressed indirectly relative to the start of the section they are in. Also add aliases for merged variables with internal linkage, as this also makes the object be more like what it is when they are not merged. Differential Revision: http://reviews.llvm.org/D11942 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@244615 91177308-0d34-0410-b5e6-96231b3b80d8
89 lines
5.2 KiB
LLVM
89 lines
5.2 KiB
LLVM
; RUN: llc %s -O0 -o - | FileCheck -check-prefix=NO-MERGE %s
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; RUN: llc %s -O0 -o - -arm-global-merge=false | FileCheck -check-prefix=NO-MERGE %s
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; RUN: llc %s -O0 -o - -arm-global-merge=true | FileCheck -check-prefix=MERGE %s
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; RUN: llc %s -O1 -o - | FileCheck -check-prefix=NO-MERGE %s
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; RUN: llc %s -O1 -o - -arm-global-merge=false | FileCheck -check-prefix=NO-MERGE %s
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; RUN: llc %s -O1 -o - -arm-global-merge=true | FileCheck -check-prefix=MERGE %s
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; RUN: llc %s -O3 -o - | FileCheck -check-prefix=MERGE %s
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; RUN: llc %s -O3 -o - -arm-global-merge=false | FileCheck -check-prefix=NO-MERGE %s
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; RUN: llc %s -O3 -o - -arm-global-merge=true | FileCheck -check-prefix=MERGE %s
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; MERGE-NOT: .zerofill __DATA,__bss,_bar,20,2
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; MERGE-NOT: .zerofill __DATA,__bss,_baz,20,2
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; MERGE-NOT: .zerofill __DATA,__bss,_foo,20,2
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; MERGE: .zerofill __DATA,__bss,l__MergedGlobals,60,4
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; MERGE-NOT: .zerofill __DATA,__bss,_bar,20,2
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; MERGE-NOT: .zerofill __DATA,__bss,_baz,20,2
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; MERGE-NOT: .zerofill __DATA,__bss,_foo,20,2
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; NO-MERGE-NOT: .zerofill __DATA,__bss,l__MergedGlobals,60,4
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; NO-MERGE: .zerofill __DATA,__bss,_bar,20,2
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; NO-MERGE: .zerofill __DATA,__bss,_baz,20,2
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; NO-MERGE: .zerofill __DATA,__bss,_foo,20,2
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; NO-MERGE-NOT: .zerofill __DATA,__bss,l__MergedGlobals,60,4
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target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32-S32"
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target triple = "thumbv7-apple-ios3.0.0"
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@bar = internal global [5 x i32] zeroinitializer, align 4
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@baz = internal global [5 x i32] zeroinitializer, align 4
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@foo = internal global [5 x i32] zeroinitializer, align 4
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; Function Attrs: nounwind ssp
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define internal void @initialize() #0 {
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%1 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %1, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @bar, i32 0, i32 0), align 4, !tbaa !1
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%2 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %2, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @baz, i32 0, i32 0), align 4, !tbaa !1
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%3 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %3, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @bar, i32 0, i32 1), align 4, !tbaa !1
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%4 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %4, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @baz, i32 0, i32 1), align 4, !tbaa !1
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%5 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %5, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @bar, i32 0, i32 2), align 4, !tbaa !1
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%6 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %6, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @baz, i32 0, i32 2), align 4, !tbaa !1
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%7 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %7, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @bar, i32 0, i32 3), align 4, !tbaa !1
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%8 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %8, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @baz, i32 0, i32 3), align 4, !tbaa !1
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%9 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %9, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @bar, i32 0, i32 4), align 4, !tbaa !1
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%10 = tail call i32 bitcast (i32 (...)* @calc to i32 ()*)() #3
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store i32 %10, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @baz, i32 0, i32 4), align 4, !tbaa !1
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ret void
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}
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declare i32 @calc(...) #1
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; Function Attrs: nounwind ssp
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define internal void @calculate() #0 {
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%1 = load <4 x i32>, <4 x i32>* bitcast ([5 x i32]* @bar to <4 x i32>*), align 4
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%2 = load <4 x i32>, <4 x i32>* bitcast ([5 x i32]* @baz to <4 x i32>*), align 4
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%3 = mul <4 x i32> %2, %1
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store <4 x i32> %3, <4 x i32>* bitcast ([5 x i32]* @foo to <4 x i32>*), align 4
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%4 = load i32, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @bar, i32 0, i32 4), align 4, !tbaa !1
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%5 = load i32, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @baz, i32 0, i32 4), align 4, !tbaa !1
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%6 = mul nsw i32 %5, %4
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store i32 %6, i32* getelementptr inbounds ([5 x i32], [5 x i32]* @foo, i32 0, i32 4), align 4, !tbaa !1
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ret void
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}
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; Function Attrs: nounwind readnone ssp
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define internal i32* @returnFoo() #2 {
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ret i32* getelementptr inbounds ([5 x i32], [5 x i32]* @foo, i32 0, i32 0)
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}
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attributes #0 = { nounwind ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #2 = { nounwind readnone ssp "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #3 = { nounwind }
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!llvm.ident = !{!0}
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!0 = !{!"LLVM version 3.4 "}
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!1 = !{!2, !2, i64 0}
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!2 = !{!"int", !3, i64 0}
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!3 = !{!"omnipotent char", !4, i64 0}
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!4 = !{!"Simple C/C++ TBAA"}
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