| Dan Gohman | 3c7d308 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -loop-index-split -instcombine -indvars -disable-output |
| Dan Gohman | 7575da0 | 2009-06-26 22:54:11 +0000 | [diff] [blame] | 2 | ; PR4455 |
| 3 | |
| 4 | 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" |
| 5 | |
| 6 | declare i8* @fast_memcpy(i8*, i8*, i64) |
| 7 | |
| 8 | define void @dvdsub_decode() nounwind { |
| 9 | entry: ; preds = %bb1 |
| 10 | br label %LoopA |
| 11 | |
| 12 | LoopA: ; preds = %LoopA, %entry |
| 13 | %x1.0.i17 = phi i32 [ %t0, %LoopA ], [ 0, %entry ] ; <i32> [#uses=2] |
| 14 | %t0 = add i32 %x1.0.i17, 1 ; <i32> [#uses=1] |
| 15 | br i1 undef, label %LoopA, label %middle |
| 16 | |
| 17 | middle: ; preds = %LoopA |
| 18 | %t1 = sub i32 0, %x1.0.i17 ; <i32> [#uses=1] |
| 19 | %t2 = add i32 %t1, 1 ; <i32> [#uses=1] |
| 20 | br label %LoopB |
| 21 | |
| 22 | LoopB: ; preds = %LoopB, %bb.nph.i27 |
| 23 | %y.029.i = phi i32 [ 0, %middle ], [ %t7, %LoopB ] ; <i32> [#uses=2] |
| 24 | %t3 = mul i32 %y.029.i, %t2 ; <i32> [#uses=1] |
| 25 | %t4 = sext i32 %t3 to i64 ; <i64> [#uses=1] |
| 26 | %t5 = getelementptr i8* null, i64 %t4 ; <i8*> [#uses=1] |
| 27 | %t6 = call i8* @fast_memcpy(i8* %t5, i8* undef, i64 undef) nounwind ; <i8*> [#uses=0] |
| 28 | %t7 = add i32 %y.029.i, 1 ; <i32> [#uses=1] |
| 29 | br i1 undef, label %LoopB, label %exit |
| 30 | |
| 31 | exit: |
| 32 | ret void |
| 33 | } |