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1; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s2; XFAIL: *3 4define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) nounwind {5; CHECK-LABEL: t1:6; CHECK: it ne7; CHECK: cmpne8 switch i32 %c, label %cond_next [9 i32 1, label %cond_true10 i32 7, label %cond_true11 ]12 13cond_true:14 %tmp12 = add i32 %a, 115 %tmp1518 = add i32 %tmp12, %b16 ret i32 %tmp151817 18cond_next:19 %tmp15 = add i32 %b, %a20 ret i32 %tmp1521}22 23; FIXME: Check for # of unconditional branch after adding branch folding post ifcvt.24define i32 @t2(i32 %a, i32 %b) nounwind {25entry:26; CHECK-LABEL: t2:27; CHECK: ite gt28; CHECK: subgt29; CHECK: suble30 %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1]31 br i1 %tmp1434, label %bb17, label %bb.outer32 33bb.outer: ; preds = %cond_false, %entry34 %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5]35 %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1]36 br label %bb37 38bb: ; preds = %cond_true, %bb.outer39 %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2]40 %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1]41 %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1]42 %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6]43 %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1]44 br i1 %tmp3, label %cond_true, label %cond_false45 46cond_true: ; preds = %bb47 %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2]48 %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1]49 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]50 br i1 %tmp1437, label %bb17, label %bb51 52cond_false: ; preds = %bb53 %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2]54 %tmp14 = icmp eq i32 %a_addr.026.0, %tmp10 ; <i1> [#uses=1]55 br i1 %tmp14, label %bb17, label %bb.outer56 57bb17: ; preds = %cond_false, %cond_true, %entry58 %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1]59 ret i32 %a_addr.026.160}61 62@x = external global ptr ; <ptr> [#uses=1]63 64define void @foo(i32 %a) nounwind {65entry:66 %tmp = load ptr, ptr @x ; <ptr> [#uses=1]67 store i32 %a, ptr %tmp68 ret void69}70 71; Tail call prevents use of ifcvt in this one. Seems like a win though.72define void @t3(i32 %a, i32 %b) nounwind {73entry:74; CHECK-LABEL: t3:75; CHECK-NOT: it lt76; CHECK-NOT: poplt77; CHECK: b.w _foo @ TAILCALL78 %tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1]79 br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock80 81cond_true: ; preds = %entry82 tail call void @foo( i32 %b )83 ret void84 85UnifiedReturnBlock: ; preds = %entry86 ret void87}88