forked from OSchip/llvm-project
47 lines
1.5 KiB
LLVM
47 lines
1.5 KiB
LLVM
; RUN: opt %loadPolly -polly-detect-unprofitable -polly-scops -analyze < %s | FileCheck %s
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;
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; void f(int *A, int c, int d) {
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; for (int i = 0; i < 1024; i++)
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; if (c < i)
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; A[i]++;
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; }
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;
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; We should move operands as close to their use as possible, hence in this case
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; there should not be any scalar dependence anymore after %cmp1 is moved to
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; %for.body (%c and %indvar.iv are synthesis able).
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;
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; CHECK-NOT: [Scalar: 1]
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;
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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define void @f(i32* %A, i64 %c) {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.inc, %entry
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
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%exitcond = icmp ne i64 %indvars.iv, 1024
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%cmp1 = icmp slt i64 %c, %indvars.iv
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br i1 %exitcond, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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br i1 %cmp1, label %if.then, label %if.end
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if.then: ; preds = %for.body
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp = load i32, i32* %arrayidx, align 4
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%inc = add nsw i32 %tmp, 1
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store i32 %inc, i32* %arrayidx, align 4
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br label %if.end
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if.end: ; preds = %if.then, %for.body
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br label %for.inc
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for.inc: ; preds = %if.end
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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br label %for.cond
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for.end: ; preds = %for.cond
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ret void
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}
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