2014-11-17 05:43:28 +08:00
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; RUN: opt %loadPolly -polly-detect -polly-codegen-scev=false -analyze < %s | FileCheck %s
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; RUN: opt %loadPolly -polly-detect -polly-codegen-scev=true -analyze < %s | FileCheck %s -check-prefix=CHECK-SCEV
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2013-03-20 04:15:19 +08:00
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; void f(long A[], long N) {
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; long i;
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; long i_non_canonical = 1;
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; for (i = 0; i < N; ++i) {
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; A[i] = i_non_canonical;
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; i_non_canonical += 1;
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; }
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; }
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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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target triple = "x86_64-unknown-linux-gnu"
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define void @f(i64* %A, i64 %N) nounwind {
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entry:
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%cmp = icmp sgt i64 %N, 0
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br i1 %cmp, label %for.i, label %return
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for.i:
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%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.i ]
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%indvar_non_canonical = phi i64 [ 1, %entry ], [ %indvar_non_canonical.next, %for.i ]
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%scevgep = getelementptr i64* %A, i64 %indvar
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store i64 %indvar_non_canonical, i64* %scevgep
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%indvar.next = add nsw i64 %indvar, 1
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%indvar_non_canonical.next = add nsw i64 %indvar_non_canonical, 1
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%exitcond = icmp eq i64 %indvar.next, %N
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br i1 %exitcond, label %return, label %for.i
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return:
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ret void
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}
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; CHECK-NOT: Valid Region for Scop
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2013-03-22 00:14:50 +08:00
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; CHECK-SCEV: Valid Region for Scop: for.i => return
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