forked from OSchip/llvm-project
72 lines
2.3 KiB
LLVM
72 lines
2.3 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -polly-invariant-load-hoisting=true -analyze < %s | FileCheck %s
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;
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; Check that we do not try to preload *I and assume p != 42.
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;
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; CHECK: Invariant Accesses: {
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; CHECK-NEXT: }
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;
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; CHECK: Invalid Context:
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; CHECK-NEXT: [N, p] -> { : 1 = 0 }
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;
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; CHECK: Stmt_if_then__TO__if_end
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; CHECK-NEXT: Domain :=
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; CHECK-NEXT: [N, p] -> { Stmt_if_then__TO__if_end[i0] : p = 42 and 0 <= i0 < N };
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;
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; void f(int *A, int *I, int N, int p, int q) {
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; for (int i = 0; i < N; i++) {
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; if (p == 42) {
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; *I = 0;
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; if (*I == q)
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; A[i] *= 2;
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; }
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; A[i]++;
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; }
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; }
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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, i32* %I, i32 %N, i32 %p, i32 %q) {
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entry:
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%tmp = sext i32 %N to i64
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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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%cmp = icmp slt i64 %indvars.iv, %tmp
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br i1 %cmp, label %for.body, label %for.end
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for.body: ; preds = %for.cond
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%cmp1 = icmp eq i32 %p, 42
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br i1 %cmp1, label %if.then, label %if.end4
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if.then: ; preds = %for.body
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store i32 0, i32* %I, align 4
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%tmp1 = load i32, i32* %I, align 4
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%cmp2 = icmp eq i32 %tmp1, %q
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br i1 %cmp2, label %if.then3, label %if.end
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if.then3: ; preds = %if.then
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%arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp2 = load i32, i32* %arrayidx, align 4
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%mul = shl nsw i32 %tmp2, 1
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store i32 %mul, i32* %arrayidx, align 4
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br label %if.end
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if.end: ; preds = %if.then3, %if.then
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br label %if.end4
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if.end4: ; preds = %if.end, %for.body
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%arrayidx6 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp3 = load i32, i32* %arrayidx6, align 4
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%inc = add nsw i32 %tmp3, 1
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store i32 %inc, i32* %arrayidx6, align 4
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br label %for.inc
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for.inc: ; preds = %if.end4
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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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