forked from OSchip/llvm-project
50 lines
1.7 KiB
LLVM
50 lines
1.7 KiB
LLVM
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
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;void f(long a[], long N, long M) {
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; long i, j, k;
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; for (j = 0; j < M; ++j)
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; if (true)
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; a[j] = j;
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; else {
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; a[j] = M;
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; a[j - N] = 0;
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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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define void @f(i64* nocapture %a, i64 %N, i64 %M) nounwind {
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entry:
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%0 = icmp sgt i64 %M, 0 ; <i1> [#uses=1]
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br i1 %0, label %bb, label %return
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bb: ; preds = %bb3, %entry
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%1 = phi i64 [ 0, %entry ], [ %2, %bb3 ] ; <i64> [#uses=5]
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%scevgep = getelementptr i64, i64* %a, i64 %1 ; <i64*> [#uses=2]
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br i1 true, label %bb1, label %bb2
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bb1: ; preds = %bb
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store i64 %1, i64* %scevgep, align 8
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br label %bb3
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bb2: ; preds = %bb
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%tmp7 = sub i64 %1, %N ; <i64> [#uses=1]
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%scevgep8 = getelementptr i64, i64* %a, i64 %tmp7 ; <i64*> [#uses=1]
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store i64 %M, i64* %scevgep, align 8
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store i64 0, i64* %scevgep8, align 8
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br label %bb3
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bb3: ; preds = %bb2, %bb1
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%2 = add nsw i64 %1, 1 ; <i64> [#uses=2]
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%exitcond = icmp eq i64 %2, %M ; <i1> [#uses=1]
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br i1 %exitcond, label %return, label %bb
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return: ; preds = %bb3, %entry
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ret void
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}
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; CHECK: Stmt_bb1
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; CHECK: Domain :=
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; CHECK: [M] -> { Stmt_bb1[i0] : 0 <= i0 < M };
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; CHECK-NOT: Stmt_bb2
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