derek.holloway
7502bf64a4
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46 lines
1.8 KiB
LLVM
46 lines
1.8 KiB
LLVM
; REQUIRES: asserts
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; RUN: opt -passes=loop-distribute -enable-loop-distribute \
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; RUN: -debug-only=loop-distribute -disable-output 2>&1 %s | FileCheck %s
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define void @f(ptr noalias %a, ptr noalias %b, ptr noalias %c, ptr noalias %d, i64 %stride) {
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; CHECK-LABEL: LDist: Checking a loop in 'f' from f.c:5:2
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
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%gep.a = getelementptr inbounds i32, ptr %a, i64 %ind
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%load.a = load i32, ptr %gep.a, align 4
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%gep.b = getelementptr inbounds i32, ptr %b, i64 %ind
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%load.b = load i32, ptr %gep.b, align 4
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%mul.a = mul i32 %load.b, %load.a
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%add = add nuw nsw i64 %ind, 1
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%gep.a.plus4 = getelementptr inbounds i32, ptr %a, i64 %add
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store i32 %mul.a, ptr %gep.a.plus4, align 4
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%gep.d = getelementptr inbounds i32, ptr %d, i64 %ind
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%loadD = load i32, ptr %gep.d, align 4
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%mul = mul i64 %ind, %stride
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%gep.strided.a = getelementptr inbounds i32, ptr %a, i64 %mul
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%load.strided.a = load i32, ptr %gep.strided.a, align 4
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%mul.c = mul i32 %loadD, %load.strided.a
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%gep.c = getelementptr inbounds i32, ptr %c, i64 %ind
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store i32 %mul.c, ptr %gep.c, align 4
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%exitcond = icmp eq i64 %add, 20
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br i1 %exitcond, label %exit, label %for.body, !dbg !2
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exit: ; preds = %for.body
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ret void
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}
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!llvm.module.flags = !{!5, !6, !7}
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!0 = !DIFile(filename: "f.c", directory: "/")
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!1 = distinct !DISubprogram(name: "f", scope: !0, file: !0, type: !8, unit: !4)
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!2 = !DILocation(line: 5, column: 2, scope: !1)
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!4 = distinct !DICompileUnit(language: DW_LANG_C99, file: !0, producer: "clang")
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!5 = !{i32 1, !"Debug Info Version", i32 3}
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!6 = !{i32 2, !"Dwarf Version", i32 2}
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!7 = !{i32 1, !"PIC Level", i32 2}
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!8 = !DISubroutineType(types: !9)
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!9 = !{null}
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