forked from OSchip/llvm-project
86 lines
3.4 KiB
LLVM
86 lines
3.4 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: Invariant Accesses: {
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [LB, UB] -> { Stmt_for_body[i0] -> MemRef_LBptr[0] };
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; CHECK-NEXT: Execution Context: [LB, UB] -> { : }
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [LB, UB] -> { Stmt_do_cond[i0, i1] -> MemRef_UBptr[0] };
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; CHECK-NEXT: Execution Context: [LB, UB] -> { : }
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [LB, UB] -> { Stmt_if_then[i0, i1] -> MemRef_V[0] };
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; CHECK-NEXT: Execution Context: [LB, UB] -> { : LB >= 6 or (UB > LB and UB >= 6) }
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [LB, UB] -> { Stmt_if_else[i0, i1] -> MemRef_U[0] };
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; CHECK-NEXT: Execution Context: [LB, UB] -> { : LB <= 5 }
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; CHECK-NEXT: }
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;
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; void f(int *restrict A, int *restrict V, int *restrict U, int *restrict UB,
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; int *restrict LB) {
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; for (int i = 0; i < 100; i++) {
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; int j = /* invariant load */ *LB;
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; do {
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; if (j > 5)
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; A[i] += /* invariant load */ *V;
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; else
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; A[i] += /* invariant load */ *U;
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; } while (j++ < /* invariant load */ *UB);
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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* noalias %A, i32* noalias %V, i32* noalias %U, i32* noalias %UBptr, i32* noalias %LBptr) {
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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, 100
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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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%LB = load i32, i32* %LBptr, align 4
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br label %do.body
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do.body: ; preds = %do.cond, %for.body
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%j.0 = phi i32 [ %LB, %for.body ], [ %inc, %do.cond ]
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%cmp1 = icmp sgt i32 %j.0, 5
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br i1 %cmp1, label %if.then, label %if.else
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if.then: ; preds = %do.body
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%tmp1 = load i32, i32* %V, align 4
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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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%add = add nsw i32 %tmp2, %tmp1
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store i32 %add, i32* %arrayidx, align 4
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br label %if.end
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if.else: ; preds = %do.body
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%tmp3 = load i32, i32* %U, align 4
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%arrayidx3 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
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%tmp4 = load i32, i32* %arrayidx3, align 4
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%add4 = add nsw i32 %tmp4, %tmp3
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store i32 %add4, i32* %arrayidx3, align 4
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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br label %do.cond
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do.cond: ; preds = %if.end
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%inc = add nsw i32 %j.0, 1
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%UB = load i32, i32* %UBptr, align 4
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%cmp5 = icmp slt i32 %j.0, %UB
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br i1 %cmp5, label %do.body, label %do.end
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do.end: ; preds = %do.cond
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br label %for.inc
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for.inc: ; preds = %do.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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