1 ; RUN: opt < %s -indvars -S \ 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-pc-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 48
