derek.holloway
7502bf64a4
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73 lines
2.5 KiB
LLVM
73 lines
2.5 KiB
LLVM
; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb '-passes=polly-custom<delicm>' -polly-print-delicm -disable-output < %s | FileCheck -match-full-lines %s
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; RUN: opt %loadNPMPolly -polly-stmt-granularity=bb '-passes=polly-custom<delicm>' -polly-print-delicm -disable-output < %s | FileCheck -match-full-lines %s
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;
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; Check that PHI mapping works even in presence of a memset whose'
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; zero value is used.
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;
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declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i32, i1)
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define void @func(ptr noalias nonnull %A) {
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entry:
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br label %outer.for
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outer.for:
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%j = phi i32 [0, %entry], [%j.inc, %outer.inc]
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%j.cmp = icmp slt i32 %j, 2
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br i1 %j.cmp, label %bodyA, label %outer.exit
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bodyA:
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%A_idx = getelementptr inbounds i8, ptr %A, i32 %j
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%cond = icmp eq i32 21, 21
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br i1 %cond, label %bodyB, label %bodyC
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bodyB:
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call void @llvm.memset.p0.i64(ptr %A_idx, i8 0, i64 1, i32 1, i1 false)
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br label %bodyC
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bodyC:
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%phi = phi i8 [1, %bodyA], [0, %bodyB]
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%a = load i8, ptr %A_idx
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store i8 %phi, ptr %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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; CHECK: Statistics {
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; CHECK: Compatible overwrites: 1
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; CHECK: Overwrites mapped to: 1
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; CHECK: PHI scalars mapped: 1
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; CHECK: }
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; CHECK: After accesses {
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; CHECK-NEXT: Stmt_bodyA
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_bodyA[i0] -> MemRef_phi__phi[] };
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; CHECK-NEXT: new: { Stmt_bodyA[i0] -> MemRef_A[o0] : false };
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; CHECK-NEXT: Stmt_bodyB
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: { Stmt_bodyB[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_bodyB[i0] -> MemRef_phi__phi[] };
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; CHECK-NEXT: new: { Stmt_bodyB[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: Stmt_bodyC
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 1]
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; CHECK-NEXT: { Stmt_bodyC[i0] -> MemRef_phi__phi[] };
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; CHECK-NEXT: new: { Stmt_bodyC[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: ReadAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: { Stmt_bodyC[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: { Stmt_bodyC[i0] -> MemRef_A[i0] };
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; CHECK-NEXT: }
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