1; RUN: llc < %s -mtriple=thumbv7-apple-darwin | FileCheck %s 2; RUN: llc < %s -mtriple=thumbv7-apple-darwin -arm-default-it | FileCheck %s 3; RUN: llc < %s -mtriple=thumbv8 -arm-no-restrict-it | FileCheck %s 4; RUN: llc < %s -mtriple=thumbv8 -arm-no-restrict-it -enable-tail-merge=0 | FileCheck %s 5define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) nounwind { 6; CHECK-LABEL: t1: 7; CHECK: ittee ne 8; CHECK: cmpne 9; CHECK: addne 10; CHECK: addeq 11; CHECK: addeq 12; CHECK: bx lr 13 switch i32 %c, label %cond_next [ 14 i32 1, label %cond_true 15 i32 7, label %cond_true 16 ] 17 18cond_true: 19 %tmp12 = add i32 %a, 1 20 %tmp1518 = add i32 %tmp12, %b 21 ret i32 %tmp1518 22 23cond_next: 24 %tmp15 = add i32 %b, %a 25 ret i32 %tmp15 26} 27 28define i32 @t2(i32 %a, i32 %b) nounwind { 29entry: 30; CHECK-LABEL: t2: 31; CHECK: ite {{gt|le}} 32; CHECK-DAG: suble 33; CHECK-DAG: subgt 34 %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1] 35 br i1 %tmp1434, label %bb17, label %bb.outer 36 37bb.outer: ; preds = %cond_false, %entry 38 %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5] 39 %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 40 br label %bb 41 42bb: ; preds = %cond_true, %bb.outer 43 %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2] 44 %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1] 45 %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1] 46 %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6] 47 %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1] 48 br i1 %tmp3, label %cond_true, label %cond_false 49 50cond_true: ; preds = %bb 51 %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2] 52 %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1] 53 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 54 br i1 %tmp1437, label %bb17, label %bb 55 56cond_false: ; preds = %bb 57 %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2] 58 %tmp14 = icmp eq i32 %a_addr.026.0, %tmp10 ; <i1> [#uses=1] 59 br i1 %tmp14, label %bb17, label %bb.outer 60 61bb17: ; preds = %cond_false, %cond_true, %entry 62 %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 63 ret i32 %a_addr.026.1 64} 65 66define i32 @t2_nomerge(i32 %a, i32 %b) nounwind { 67entry: 68; CHECK-LABEL: t2_nomerge: 69; CHECK-NOT: ite {{gt|le}} 70; CHECK-NOT: suble 71; CHECK-NOT: subgt 72 %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1] 73 br i1 %tmp1434, label %bb17, label %bb.outer 74 75bb.outer: ; preds = %cond_false, %entry 76 %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5] 77 %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 78 br label %bb 79 80bb: ; preds = %cond_true, %bb.outer 81 %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2] 82 %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1] 83 %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1] 84 %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6] 85 %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1] 86 br i1 %tmp3, label %cond_true, label %cond_false 87 88cond_true: ; preds = %bb 89 %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2] 90 %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1] 91 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 92 br i1 %tmp1437, label %bb17, label %bb 93 94cond_false: ; preds = %bb 95 %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2] 96 %tmp14 = icmp eq i32 %b_addr.021.0.ph, %tmp10 ; <i1> [#uses=1] 97 br i1 %tmp14, label %bb17, label %bb.outer 98 99bb17: ; preds = %cond_false, %cond_true, %entry 100 %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 101 ret i32 %a_addr.026.1 102} 103 104@x = external global i32* ; <i32**> [#uses=1] 105 106define void @foo(i32 %a) nounwind { 107entry: 108 %tmp = load i32*, i32** @x ; <i32*> [#uses=1] 109 store i32 %a, i32* %tmp 110 ret void 111} 112 113define void @t3(i32 %a, i32 %b) nounwind { 114entry: 115; CHECK-LABEL: t3: 116; CHECK: it lt 117; CHECK-NEXT: bxlt lr 118; CHECK: mov r0, r1 119; CHECK: bl {{_?}}foo 120 %tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1] 121 br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock 122 123cond_true: ; preds = %entry 124 call void @foo( i32 %b ) 125 ret void 126 127UnifiedReturnBlock: ; preds = %entry 128 ret void 129} 130