4089763883
This patch updates the GlobalMerge pass to be able to handle private global variables, which is required for a follow-up PowerPC specific GlobalMerge patch to merge internal and private globals. A new LIT test is also added to exhibit the ability to merge private globals.
37 lines
1.5 KiB
LLVM
37 lines
1.5 KiB
LLVM
; RUN: opt -global-merge -global-merge-max-offset=100 -S -o - %s | FileCheck %s
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; RUN: opt -passes='global-merge<max-offset=100>' -S -o - %s | FileCheck %s
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; NOTE: This is a copy of the llvm/test/Transforms/GlobalMerge/basic.ll test,
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; using `private` global variables instead of `internal`. This is to show that
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; that private globals can be merged in the GlobalMerge pass.
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target datalayout = "e-p:64:64"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: @_MergedGlobals = private global <{ i32, i32 }> <{ i32 1, i32 2 }>, align 4
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; CHECK: @_MergedGlobals.1 = private global <{ i32, i32 }> <{ i32 3, i32 4 }>, section "foo", align 4
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; CHECK-DAG: @a = private alias i32, ptr @_MergedGlobals{{$}}
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@a = private global i32 1
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; CHECK-DAG: @b = private alias i32, getelementptr inbounds (<{ i32, i32 }>, ptr @_MergedGlobals, i32 0, i32 1)
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@b = private global i32 2
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; CHECK-DAG: @c = private alias i32, ptr @_MergedGlobals.1{{$}}
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@c = private global i32 3, section "foo"
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; CHECK-DAG: @d = private alias i32, getelementptr inbounds (<{ i32, i32 }>, ptr @_MergedGlobals.1, i32 0, i32 1)
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@d = private global i32 4, section "foo"
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define void @use_private() {
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; CHECK: load i32, ptr @_MergedGlobals,
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%x = load i32, ptr @a
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; CHECK: load i32, ptr getelementptr inbounds (<{ i32, i32 }>, ptr @_MergedGlobals, i32 0, i32 1)
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%y = load i32, ptr @b
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; CHECK: load i32, ptr @_MergedGlobals.1
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%z1 = load i32, ptr @c
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; CHECK: load i32, ptr getelementptr inbounds (<{ i32, i32 }>, ptr @_MergedGlobals.1, i32 0, i32 1)
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%z2 = load i32, ptr @d
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ret void
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}
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