1 ;RUN: opt -gvn -S < %s | FileCheck %s
3 target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n8:16:32-S64"
4 target triple = "thumbv7--linux-gnueabi"
6 %struct.a = type { i16, i16, [1 x %union.a] }
7 %union.a = type { i32 }
9 @length = external global [0 x i32], align 4
11 ; Function Attrs: nounwind
12 define fastcc void @foo(%struct.a* nocapture readonly %x) {
17 bb0: ; preds = %land.lhs.true, %entry
19 %x.tr = phi %struct.a* [ %x, %entry ], [ null, %land.lhs.true ]
20 %code1 = getelementptr inbounds %struct.a, %struct.a* %x.tr, i32 0, i32 0
21 %0 = load i16, i16* %code1, align 4
22 ; CHECK: load i32, i32*
23 %conv = zext i16 %0 to i32
24 switch i32 %conv, label %if.end.50 [
25 i32 43, label %cleanup
26 i32 52, label %if.then.5
29 if.then.5: ; preds = %bb0
30 br i1 undef, label %land.lhs.true, label %if.then.26
32 land.lhs.true: ; preds = %if.then.5
33 br i1 undef, label %cleanup, label %bb0
35 if.then.26: ; preds = %if.then.5
36 %x.tr.lcssa163 = phi %struct.a* [ %x.tr, %if.then.5 ]
37 br i1 undef, label %cond.end, label %cond.false
39 cond.false: ; preds = %if.then.26
42 %mode = getelementptr inbounds %struct.a, %struct.a* %x.tr.lcssa163, i32 0, i32 1
43 %bf.load = load i16, i16* %mode, align 2
44 %bf.shl = shl i16 %bf.load, 8
47 cond.end: ; preds = %cond.false, %if.then.26
48 br i1 undef, label %if.then.44, label %cleanup
50 if.then.44: ; preds = %cond.end
53 if.end.50: ; preds = %bb0
55 %conv.lcssa = phi i32 [ %conv, %bb0 ]
56 %arrayidx52 = getelementptr inbounds [0 x i32], [0 x i32]* @length, i32 0, i32 %conv.lcssa
57 %1 = load i32, i32* %arrayidx52, align 4
58 br i1 undef, label %for.body.57, label %cleanup
60 for.body.57: ; preds = %if.end.50
61 %i.2157 = add nsw i32 %1, -1
64 cleanup: ; preds = %if.end.50, %cond.end, %land.lhs.true, %bb0