| Andreas Bolka | 0dcde10 | 2009-07-23 15:56:53 +0000 | [diff] [blame^] | 1 | ; RUN: llvm-as < %s | opt -disable-output -analyze -lda | FileCheck %s |
| 2 | |
| 3 | @x = common global [256 x i32] zeroinitializer, align 4 |
| 4 | |
| 5 | ; x[5] = x[6] |
| 6 | |
| 7 | define void @f1(...) nounwind { |
| 8 | entry: |
| 9 | br label %for.body |
| 10 | |
| 11 | for.body: |
| 12 | %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ] |
| 13 | %x = load i32* getelementptr ([256 x i32]* @x, i32 0, i64 6) |
| 14 | store i32 %x, i32* getelementptr ([256 x i32]* @x, i32 0, i64 5) |
| 15 | ; CHECK: 0,1: dep |
| 16 | %i.next = add i64 %i, 1 |
| 17 | %exitcond = icmp eq i64 %i.next, 256 |
| 18 | br i1 %exitcond, label %for.end, label %for.body |
| 19 | |
| 20 | for.end: |
| 21 | ret void |
| 22 | } |
| 23 | |
| 24 | ; x[c] = x[c+1] // with c being a loop-invariant constant |
| 25 | |
| 26 | define void @f2(i64 %c0) nounwind { |
| 27 | entry: |
| 28 | %c1 = add i64 %c0, 1 |
| 29 | %x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %c0 |
| 30 | %x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %c1 |
| 31 | br label %for.body |
| 32 | |
| 33 | for.body: |
| 34 | %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ] |
| 35 | %x = load i32* %x.ld.addr |
| 36 | store i32 %x, i32* %x.st.addr |
| 37 | ; CHECK: 0,1: dep |
| 38 | %i.next = add i64 %i, 1 |
| 39 | %exitcond = icmp eq i64 %i.next, 256 |
| 40 | br i1 %exitcond, label %for.end, label %for.body |
| 41 | |
| 42 | for.end: |
| 43 | ret void |
| 44 | } |