| Dan Gohman | 1880092 | 2009-09-11 18:01:28 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -indvars -S \ |
| Dan Gohman | 03d5d0f | 2009-07-14 01:09:02 +0000 | [diff] [blame] | 2 | ; RUN: | grep {%b.1 = phi i32 \\\[ 2, %bb \\\], \\\[ 1, %bb2 \\\]} |
| 3 | |
| 4 | ; This loop has multiple exits, and the value of %b1 depends on which |
| 5 | ; exit is taken. Indvars should correctly compute the exit values. |
| 6 | |
| 7 | 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" |
| 8 | target triple = "x86_64-linux-gnu" |
| 9 | %struct..0anon = type <{ i8, [3 x i8] }> |
| 10 | |
| 11 | define i32 @main() nounwind { |
| 12 | entry: |
| 13 | br label %bb2 |
| 14 | |
| 15 | bb2: ; preds = %bb, %entry |
| 16 | %sdata.0 = phi i32 [ 1, %entry ], [ %ins10, %bb ] ; <i32> [#uses=2] |
| 17 | %b.0 = phi i32 [ 0, %entry ], [ %t0, %bb ] ; <i32> [#uses=2] |
| 18 | %tmp6 = trunc i32 %sdata.0 to i8 ; <i8> [#uses=2] |
| 19 | %t2 = and i8 %tmp6, 1 ; <i8> [#uses=1] |
| 20 | %t3 = icmp eq i8 %t2, 0 ; <i1> [#uses=1] |
| 21 | %t4 = xor i8 %tmp6, 1 ; <i8> [#uses=1] |
| 22 | %tmp8 = zext i8 %t4 to i32 ; <i32> [#uses=1] |
| 23 | %mask9 = and i32 %sdata.0, -256 ; <i32> [#uses=1] |
| 24 | %ins10 = or i32 %tmp8, %mask9 ; <i32> [#uses=1] |
| 25 | br i1 %t3, label %bb3, label %bb |
| 26 | |
| 27 | bb: ; preds = %bb2 |
| 28 | %t0 = add i32 %b.0, 1 ; <i32> [#uses=3] |
| 29 | %t1 = icmp sgt i32 %t0, 100 ; <i1> [#uses=1] |
| 30 | br i1 %t1, label %bb3, label %bb2 |
| 31 | |
| 32 | bb3: ; preds = %bb, %bb2 |
| 33 | %b.1 = phi i32 [ %t0, %bb ], [ %b.0, %bb2 ] ; <i32> [#uses=1] |
| 34 | %t5 = icmp eq i32 %b.1, 1 ; <i1> [#uses=1] |
| 35 | br i1 %t5, label %bb5, label %bb4 |
| 36 | |
| 37 | bb4: ; preds = %bb3 |
| 38 | tail call void @abort() noreturn nounwind |
| 39 | unreachable |
| 40 | |
| 41 | bb5: ; preds = %bb3 |
| 42 | ret i32 0 |
| 43 | } |
| 44 | |
| 45 | declare void @llvm.memset.i64(i8* nocapture, i8, i64, i32) nounwind |
| 46 | |
| 47 | declare void @abort() noreturn nounwind |