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46bdfb0e6b
to more accurately describe what it does. Expand its doxygen comment to describe what the backedge-taken count is and how it differs from the actual iteration count of the loop. Adjust names and comments in associated code accordingly. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65382 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
920 B
LLVM
30 lines
920 B
LLVM
; RUN: llvm-as < %s | opt -analyze -scalar-evolution \
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; RUN: -scalar-evolution-max-iterations=0 | grep {backedge-taken count is 10000}
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; PR1101
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@A = weak global [1000 x i32] zeroinitializer, align 32
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define void @test(i32 %N) {
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entry:
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"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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br label %bb3
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bb: ; preds = %bb3
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%tmp = getelementptr [1000 x i32]* @A, i32 0, i32 %i.0 ; <i32*> [#uses=1]
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store i32 123, i32* %tmp
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%tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1]
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br label %bb3
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bb3: ; preds = %bb, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3]
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%tmp3 = icmp sle i32 %i.0, 9999 ; <i1> [#uses=1]
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br i1 %tmp3, label %bb, label %bb5
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bb5: ; preds = %bb3
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br label %return
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return: ; preds = %bb5
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ret void
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}
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