derek.holloway
7502bf64a4
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43 lines
1.4 KiB
LLVM
43 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals
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; RUN: opt -passes=globalopt < %s -S | FileCheck %s
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; Test that we do not fold away addresscasts when optimizing once-stored
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; globals, as these may be runtime operations.
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@g1 = internal global ptr null
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@g2 = addrspace(1) global i32 0
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;.
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; CHECK: @g1 = internal unnamed_addr global ptr null
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; CHECK: @g2 = addrspace(1) global i32 0
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; CHECK: @g4 = local_unnamed_addr addrspace(1) global i32 0
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;.
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define i64 @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[TMP1:%.*]] = addrspacecast ptr addrspace(1) @g2 to ptr
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; CHECK-NEXT: store ptr [[TMP1]], ptr @g1, align 8
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; CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr @g1, align 8
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; CHECK-NEXT: [[TMP3:%.*]] = load i64, ptr [[TMP2]], align 8
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; CHECK-NEXT: ret i64 [[TMP3]]
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;
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%l1 = addrspacecast ptr addrspace(1) @g2 to ptr
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store ptr %l1, ptr @g1, align 8
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%l2 = load ptr, ptr @g1, align 8
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%l3 = load i64, ptr %l2, align 8
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ret i64 %l3
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}
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@g3 = internal global ptr null
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@g4 = addrspace(1) global i32 0
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define i64 @test2() {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr addrspacecast (ptr addrspace(1) @g4 to ptr), align 8
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; CHECK-NEXT: ret i64 [[TMP1]]
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;
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store ptr addrspacecast (ptr addrspace(1) @g4 to ptr), ptr @g3, align 8
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%l1 = load ptr, ptr @g3, align 8
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%l2 = load i64, ptr %l1, align 8
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ret i64 %l2
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}
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