derek.holloway
7502bf64a4
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93 lines
2.6 KiB
LLVM
93 lines
2.6 KiB
LLVM
; RUN: opt %loadNPMPolly '-passes=polly-custom<detect>' -polly-print-detect -disable-output < %s 2>&1 | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
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; Two sequential loops right after each other.
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;
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; void f(long A[], long N) {
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; long i;
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; for (i = 0; i < N; ++i)
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; A[i] = i;
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; for (i = 0; i < N; ++i)
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; A[i] = i;
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; }
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define void @f1(ptr %A, i64 %N) nounwind {
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; CHECK-LABEL: Detected Scops in Function f1
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entry:
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fence seq_cst
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br label %for.i.1
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for.i.1:
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%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.i.1 ]
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%scevgep = getelementptr i64, ptr %A, i64 %indvar
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store i64 %indvar, ptr %scevgep
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%indvar.next = add nsw i64 %indvar, 1
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%exitcond = icmp eq i64 %indvar.next, %N
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br i1 %exitcond, label %for.i.2, label %for.i.1
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for.i.2:
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%indvar.2 = phi i64 [ 0, %for.i.1 ], [ %indvar.next.2, %for.i.2 ]
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%scevgep.2 = getelementptr i64, ptr %A, i64 %indvar.2
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store i64 %indvar.2, ptr %scevgep.2
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%indvar.next.2 = add nsw i64 %indvar.2, 1
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%exitcond.2 = icmp eq i64 %indvar.next.2, %N
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br i1 %exitcond.2, label %return, label %for.i.2
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return:
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fence seq_cst
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ret void
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}
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; C-H-E-C-K: Valid Region for Scop: for.i.1 => return
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; This one is currently not completely detected due to the PHI node in
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; for.i.2 causing a 'PHI node in exit BB' error for the first loop. This should
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; be fixed at some point. Such test cases do not really show up for us, as
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; the -loop-simplify pass always inserts a preheader as in the test case below.
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; Two sequential loops with a basic block in between.
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;
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; void f(long A[], long N) {
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; long i;
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;
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; for (i = 0; i < N; ++i)
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; A[i] = i;
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; preheader:
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; ;
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;
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; for (i = 0; i < N; ++i)
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; A[i] = i;
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; }
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define void @f2(ptr %A, i64 %N) nounwind {
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; CHECK-LABEL: Detected Scops in Function f2
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entry:
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fence seq_cst
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br label %for.i.1
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for.i.1:
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%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.i.1 ]
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%scevgep = getelementptr i64, ptr %A, i64 %indvar
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store i64 %indvar, ptr %scevgep
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%indvar.next = add nsw i64 %indvar, 1
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%exitcond = icmp eq i64 %indvar.next, %N
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br i1 %exitcond, label %preheader, label %for.i.1
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preheader:
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br label %for.i.2
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for.i.2:
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%indvar.2 = phi i64 [ 0, %preheader ], [ %indvar.next.2, %for.i.2 ]
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%scevgep.2 = getelementptr i64, ptr %A, i64 %indvar.2
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store i64 %indvar.2, ptr %scevgep.2
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%indvar.next.2 = add nsw i64 %indvar.2, 1
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%exitcond.2 = icmp eq i64 %indvar.next.2, %N
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br i1 %exitcond.2, label %return, label %for.i.2
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return:
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fence seq_cst
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ret void
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}
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; CHECK: Valid Region for Scop: for.i.1 => return
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