| ; RUN: opt %loadPolly -basicaa -polly-prepare -polly-scops -analyze < %s | FileCheck %s |
| |
| 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-n8:16:32:64" |
| target triple = "x86_64-linux-gnu" |
| |
| ;long f(long a[], long n) { |
| ; long i, k; |
| ; k = 1; |
| ; for (i = 1; i < n; ++i) { |
| ; a[i] = k * a[i - 1]; |
| ; k = a[i + 3] + a[2 * i]; |
| ; } |
| ; return 0; |
| ;} |
| |
| define i64 @f(i64* nocapture %a, i64 %n) nounwind { |
| entry: |
| %0 = icmp sgt i64 %n, 1 ; <i1> [#uses=1] |
| br i1 %0, label %bb.nph, label %bb2 |
| |
| bb.nph: ; preds = %entry |
| %tmp = add i64 %n, -1 ; <i64> [#uses=1] |
| %.pre = load i64* %a, align 8 ; <i64> [#uses=1] |
| br label %bb |
| |
| bb: ; preds = %bb, %bb.nph |
| %1 = phi i64 [ %.pre, %bb.nph ], [ %2, %bb ] ; <i64> [#uses=1] |
| %indvar = phi i64 [ 0, %bb.nph ], [ %tmp6, %bb ] ; <i64> [#uses=3] |
| %k.05 = phi i64 [ 1, %bb.nph ], [ %5, %bb ] ; <i64> [#uses=1] |
| %tmp6 = add i64 %indvar, 1 ; <i64> [#uses=3] |
| %scevgep = getelementptr i64* %a, i64 %tmp6 ; <i64*> [#uses=1] |
| %2 = mul nsw i64 %1, %k.05 ; <i64> [#uses=2] |
| store i64 %2, i64* %scevgep, align 8 |
| %tmp7 = shl i64 %indvar, 1 ; <i64> [#uses=1] |
| %tmp11 = add i64 %indvar, 4 ; <i64> [#uses=1] |
| %tmp8 = add i64 %tmp7, 2 ; <i64> [#uses=1] |
| %scevgep12 = getelementptr i64* %a, i64 %tmp11 ; <i64*> [#uses=1] |
| %scevgep9 = getelementptr i64* %a, i64 %tmp8 ; <i64*> [#uses=1] |
| %3 = load i64* %scevgep9, align 8 ; <i64> [#uses=1] |
| %4 = load i64* %scevgep12, align 8 ; <i64> [#uses=1] |
| %5 = add nsw i64 %3, %4 ; <i64> [#uses=1] |
| %exitcond = icmp eq i64 %tmp6, %tmp ; <i1> [#uses=1] |
| br i1 %exitcond, label %bb2, label %bb |
| |
| bb2: ; preds = %bb, %entry |
| ret i64 0 |
| } |
| |
| ; CHECK: Context: |
| ; CHECK: [n] -> { : n >= -9223372036854775808 and n <= 9223372036854775807 } |
| ; CHECK: Statements { |
| ; CHECK: Stmt_bb_nph |
| ; CHECK: Domain := |
| ; CHECK: [n] -> { Stmt_bb_nph[] : n >= 2 }; |
| ; CHECK: Scattering := |
| ; CHECK: [n] -> { Stmt_bb_nph[] -> scattering[0, 0] }; |
| ; CHECK: ReadAccess := |
| ; CHECK: [n] -> { Stmt_bb_nph[] -> MemRef_a[0] }; |
| ; CHECK: MustWriteAccess := |
| ; CHECK: [n] -> { Stmt_bb_nph[] -> MemRef_k_05_reg2mem[0] }; |
| ; CHECK: MustWriteAccess := |
| ; CHECK: [n] -> { Stmt_bb_nph[] -> MemRef__reg2mem[0] }; |
| ; CHECK: Stmt_bb |
| ; CHECK: Domain := |
| ; CHECK: [n] -> { Stmt_bb[i0] : i0 >= 0 and i0 <= -2 + n and n >= 2 }; |
| ; CHECK: Scattering := |
| ; CHECK: [n] -> { Stmt_bb[i0] -> scattering[1, i0] }; |
| ; CHECK: ReadAccess := |
| ; CHECK: [n] -> { Stmt_bb[i0] -> MemRef__reg2mem[0] }; |
| ; CHECK: ReadAccess := |
| ; CHECK: [n] -> { Stmt_bb[i0] -> MemRef_k_05_reg2mem[0] }; |
| ; CHECK: MustWriteAccess := |
| ; CHECK: [n] -> { Stmt_bb[i0] -> MemRef_a[1 + i0] }; |
| ; CHECK: ReadAccess := |
| ; CHECK: [n] -> { Stmt_bb[i0] -> MemRef_a[2 + 2i0] }; |
| ; CHECK: ReadAccess := |
| ; CHECK: [n] -> { Stmt_bb[i0] -> MemRef_a[4 + i0] }; |
| ; CHECK: MustWriteAccess := |
| ; CHECK: [n] -> { Stmt_bb[i0] -> MemRef_k_05_reg2mem[0] }; |
| ; CHECK: MustWriteAccess := |
| ; CHECK: [n] -> { Stmt_bb[i0] -> MemRef__reg2mem[0] }; |