forked from OSchip/llvm-project
102 lines
4.7 KiB
LLVM
102 lines
4.7 KiB
LLVM
; RUN: opt %loadPolly -polly-stmt-granularity=bb -polly-invariant-load-hoisting -polly-flatten-schedule -polly-delicm-overapproximate-writes=true -polly-delicm-compute-known=true -polly-delicm -analyze < %s | FileCheck %s
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;
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; void func(int *A, int* StartPtr) {
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; for (int j = 0; j < 2; j += 1) { /* outer */
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; int Start = *Startptr;
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; int phi = Start;
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; for (int i = Start; i < 4; i += 1) /* reduction */
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; phi += 42;
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; A[j] = phi;
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; }
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; }
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;
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define void @func(i32* noalias nonnull %A, i32* noalias nonnull %StartPtr) {
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entry:
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br label %outer.preheader
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outer.preheader:
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br label %outer.for
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outer.for:
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%j = phi i32 [0, %outer.preheader], [%j.inc, %outer.inc]
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%j.cmp = icmp slt i32 %j, 2
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br i1 %j.cmp, label %reduction.preheader, label %outer.exit
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reduction.preheader:
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%Start = load i32, i32* %StartPtr
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br label %reduction.for
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reduction.for:
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%i = phi i32 [%Start, %reduction.preheader], [%i.inc, %reduction.inc]
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%phi = phi i32 [%Start, %reduction.preheader], [%mul, %reduction.inc]
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br label %body
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body:
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%mul = mul i32 %phi, 2
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br label %reduction.inc
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reduction.inc:
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%i.inc = add nuw nsw i32 %i, 1
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%i.cmp = icmp slt i32 %i.inc, 4
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br i1 %i.cmp, label %reduction.for, label %reduction.exit
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reduction.exit:
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%A_idx = getelementptr inbounds i32, i32* %A, i32 %j
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store i32 %mul, i32* %A_idx
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br label %outer.inc
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outer.inc:
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%j.inc = add nuw nsw i32 %j, 1
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br label %outer.for
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outer.exit:
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br label %return
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return:
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ret void
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}
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; FIXME: The accesses for %i should not be there because, with
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; load-hoisting %Start is an affine loop. To be fixed in ScopBuilder.
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; CHECK: After accesses {
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; CHECK-NEXT: Stmt_reduction_preheader
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [Start] -> { Stmt_reduction_preheader[i0] -> MemRef_phi__phi[] };
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; CHECK-NEXT: new: [Start] -> { Stmt_reduction_preheader[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: Stmt_reduction_for
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [Start] -> { Stmt_reduction_for[i0, i1] -> MemRef_phi__phi[] };
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; CHECK-NEXT: new: [Start] -> { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] : -i0 < i1 <= 3 - Start; Stmt_reduction_for[1, 0] -> MemRef_A[1] : Start >= 4; Stmt_reduction_for[0, 0] -> MemRef_A[0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [Start] -> { Stmt_reduction_for[i0, i1] -> MemRef_phi[] };
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; CHECK-NEXT: new: [Start] -> { Stmt_reduction_for[i0, i1] -> MemRef_A[i0] : i0 <= i1 <= 3 - Start; Stmt_reduction_for[i0, 0] -> MemRef_A[i0] : i0 <= -4 + Start; Stmt_reduction_for[1, 0] -> MemRef_A[1] : Start <= 4 }
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; CHECK-NEXT: Stmt_body
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [Start] -> { Stmt_body[i0, i1] -> MemRef_mul[] };
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; CHECK-NEXT: new: [Start] -> { Stmt_body[i0, i1] -> MemRef_A[i0] : i0 <= i1 <= 3 - Start; Stmt_body[i0, 0] -> MemRef_A[i0] : i0 <= -4 + Start; Stmt_body[1, 0] -> MemRef_A[1] : Start <= 4 }
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [Start] -> { Stmt_body[i0, i1] -> MemRef_phi[] };
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; CHECK-NEXT: new: [Start] -> { Stmt_body[i0, i1] -> MemRef_A[i0] : i0 <= i1 <= 3 - Start; Stmt_body[1, 0] -> MemRef_A[1]; Stmt_body[0, 0] -> MemRef_A[0] : Start >= 4 };
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; CHECK-NEXT: Stmt_reduction_inc
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [Start] -> { Stmt_reduction_inc[i0, i1] -> MemRef_mul[] };
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; CHECK-NEXT: new: [Start] -> { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : i0 <= i1 <= 3 - Start; Stmt_reduction_inc[1, 0] -> MemRef_A[1]; Stmt_reduction_inc[0, 0] -> MemRef_A[0] : Start >= 4 };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [Start] -> { Stmt_reduction_inc[i0, i1] -> MemRef_phi__phi[] };
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; CHECK-NEXT: new: [Start] -> { Stmt_reduction_inc[i0, i1] -> MemRef_A[i0] : 0 < i1 <= 3 - Start; Stmt_reduction_inc[i0, 0] -> MemRef_A[i0] }
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; CHECK-NEXT: Stmt_reduction_exit
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: [Start] -> { Stmt_reduction_exit[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: [Start] -> { Stmt_reduction_exit[i0] -> MemRef_mul[] };
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; CHECK-NEXT: new: [Start] -> { Stmt_reduction_exit[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: }
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