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https://github.com/c64scene-ar/llvm-6502.git
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25 lines
657 B
LLVM
25 lines
657 B
LLVM
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; RUN: opt < %s -analyze -block-freq | FileCheck %s
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define i32 @test1(i32 %i, i32* %a) {
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; CHECK: Printing analysis {{.*}} for function 'test1'
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; CHECK: entry = 1024
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entry:
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br label %body
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; Loop backedges are weighted and thus their bodies have a greater frequency.
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; CHECK: body = 31744
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body:
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%iv = phi i32 [ 0, %entry ], [ %next, %body ]
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%base = phi i32 [ 0, %entry ], [ %sum, %body ]
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%arrayidx = getelementptr inbounds i32* %a, i32 %iv
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%0 = load i32* %arrayidx
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%sum = add nsw i32 %0, %base
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%next = add i32 %iv, 1
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%exitcond = icmp eq i32 %next, %i
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br i1 %exitcond, label %exit, label %body
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; CHECK: exit = 1024
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exit:
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ret i32 %sum
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}
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