1 ; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s
3 define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {
7 switch i32 %c, label %cond_next [
8 i32 1, label %cond_true
9 i32 7, label %cond_true
13 %tmp12 = add i32 %a, 1
14 %tmp1518 = add i32 %tmp12, %b
18 %tmp15 = add i32 %b, %a
22 ; FIXME: Check for # of unconditional branch after adding branch folding post ifcvt.
23 define i32 @t2(i32 %a, i32 %b) nounwind {
29 %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1]
30 br i1 %tmp1434, label %bb17, label %bb.outer
32 bb.outer: ; preds = %cond_false, %entry
33 %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5]
34 %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1]
37 bb: ; preds = %cond_true, %bb.outer
38 %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2]
39 %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1]
40 %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1]
41 %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6]
42 %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1]
43 br i1 %tmp3, label %cond_true, label %cond_false
45 cond_true: ; preds = %bb
46 %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2]
47 %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1]
48 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
49 br i1 %tmp1437, label %bb17, label %bb
51 cond_false: ; preds = %bb
52 %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2]
53 %tmp14 = icmp eq i32 %a_addr.026.0, %tmp10 ; <i1> [#uses=1]
54 br i1 %tmp14, label %bb17, label %bb.outer
56 bb17: ; preds = %cond_false, %cond_true, %entry
57 %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1]
61 @x = external global i32* ; <i32**> [#uses=1]
63 define void @foo(i32 %a) nounwind {
65 %tmp = load i32** @x ; <i32*> [#uses=1]
66 store i32 %a, i32* %tmp
70 define void @t3(i32 %a, i32 %b) nounwind {
74 ; CHECK: poplt {r7, pc}
75 %tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1]
76 br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock
78 cond_true: ; preds = %entry
79 call void @foo( i32 %b )
82 UnifiedReturnBlock: ; preds = %entry