blob: 4ec4acadb4a573c36123366ab01858cfdae9227d [file] [log] [blame]
Dan Gohman18800922009-09-11 18:01:28 +00001; RUN: opt < %s -indvars -S \
Dan Gohman03d5d0f2009-07-14 01:09:02 +00002; 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
7target 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"
8target triple = "x86_64-linux-gnu"
9 %struct..0anon = type <{ i8, [3 x i8] }>
10
11define i32 @main() nounwind {
12entry:
13 br label %bb2
14
15bb2: ; 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
27bb: ; 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
32bb3: ; 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
37bb4: ; preds = %bb3
38 tail call void @abort() noreturn nounwind
39 unreachable
40
41bb5: ; preds = %bb3
42 ret i32 0
43}
44
45declare void @llvm.memset.i64(i8* nocapture, i8, i64, i32) nounwind
46
47declare void @abort() noreturn nounwind