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@@ -0,0 +1,81 @@ |
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; RUN: opt < %s -licm -pass-remarks=licm -o /dev/null 2>&1 | FileCheck %s |
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; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop(licm)' %s -o /dev/null -pass-remarks=licm 2>&1 | FileCheck %s |
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target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128" |
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define void @hoist(i32* %array, i32* noalias %p) { |
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Entry: |
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br label %Loop |
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Loop: |
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%j = phi i32 [ 0, %Entry ], [ %Next, %Loop ] |
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%addr = getelementptr i32, i32* %array, i32 %j |
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%a = load i32, i32* %addr |
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; CHECK: remark: /tmp/kk.c:2:20: hosting load |
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%b = load i32, i32* %p, !dbg !8 |
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%a2 = add i32 %a, %b |
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store i32 %a2, i32* %addr |
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%Next = add i32 %j, 1 |
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%cond = icmp eq i32 %Next, 0 |
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br i1 %cond, label %Out, label %Loop |
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Out: |
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ret void |
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} |
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define i32 @sink(i32* %array, i32* noalias %p, i32 %b) { |
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Entry: |
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br label %Loop |
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Loop: |
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%j = phi i32 [ 0, %Entry ], [ %Next, %Loop ] |
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%addr = getelementptr i32, i32* %array, i32 %j |
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%a = load i32, i32* %addr |
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%a2 = add i32 %a, %b |
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store i32 %a2, i32* %addr |
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; CHECK: remark: /tmp/kk.c:2:21: sinking add |
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%a3 = add i32 %a, 1, !dbg !9 |
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%Next = add i32 %j, 1 |
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%cond = icmp eq i32 %Next, 0 |
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br i1 %cond, label %Out, label %Loop |
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Out: |
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%a4 = phi i32 [ %a3, %Loop ] |
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ret i32 %a4 |
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} |
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define void @promote(i32* %array, i32* noalias %p) { |
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Entry: |
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br label %Loop |
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Loop: |
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%j = phi i32 [ 0, %Entry ], [ %Next, %Loop ] |
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%addr = getelementptr i32, i32* %array, i32 %j |
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%a = load i32, i32* %addr |
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%b = load i32, i32* %p |
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%a2 = add i32 %a, %b |
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store i32 %a2, i32* %addr |
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; CHECK: remark: /tmp/kk.c:2:22: Moving accesses to memory location out of the loop |
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store i32 %b, i32* %p, !dbg !10 |
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%Next = add i32 %j, 1 |
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%cond = icmp eq i32 %Next, 0 |
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br i1 %cond, label %Out, label %Loop |
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Out: |
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ret void |
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} |
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!llvm.dbg.cu = !{!0} |
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!llvm.module.flags = !{!3, !4} |
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!llvm.ident = !{!5} |
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.9.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: NoDebug, enums: !2) |
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!1 = !DIFile(filename: "/tmp/kk.c", directory: "/tmp") |
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!2 = !{} |
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!3 = !{i32 2, !"Debug Info Version", i32 3} |
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!4 = !{i32 1, !"PIC Level", i32 2} |
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!5 = !{!"clang version 3.9.0 "} |
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!6 = distinct !DISubprogram(name: "success", scope: !1, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, unit: !0, variables: !2) |
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!7 = !DISubroutineType(types: !2) |
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!8 = !DILocation(line: 2, column: 20, scope: !6) |
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!9 = !DILocation(line: 2, column: 21, scope: !6) |
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!10 = !DILocation(line: 2, column: 22, scope: !6) |