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45 lines
1.1 KiB
LLVM
45 lines
1.1 KiB
LLVM
; RUN: opt < %s -analyze -lda | FileCheck %s
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;; x[5] = x[6] // with x being a pointer passed as argument
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define void @f1(i32* nocapture %xptr) nounwind {
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entry:
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%x.ld.addr = getelementptr i32* %xptr, i64 6
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%x.st.addr = getelementptr i32* %xptr, i64 5
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
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%x = load i32* %x.ld.addr
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store i32 %x, i32* %x.st.addr
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; CHECK: 0,1: dep
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%i.next = add i64 %i, 1
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%exitcond = icmp eq i64 %i.next, 256
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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;; x[5] = x[6] // with x being an array on the stack
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define void @foo(...) nounwind {
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entry:
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%xptr = alloca [256 x i32], align 4
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%x.ld.addr = getelementptr [256 x i32]* %xptr, i64 0, i64 6
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%x.st.addr = getelementptr [256 x i32]* %xptr, i64 0, i64 5
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br label %for.body
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for.body:
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%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
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%x = load i32* %x.ld.addr
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store i32 %x, i32* %x.st.addr
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; CHECK: 0,1: ind
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%i.next = add i64 %i, 1
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%exitcond = icmp eq i64 %i.next, 256
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br i1 %exitcond, label %for.end, label %for.body
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for.end:
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ret void
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}
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