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 5 define i32 @t1(i32 %a, i32 %b, i32 %c, i32 %d) nounwind { 6 ; CHECK-LABEL: t1: 7 ; CHECK: ittt ne 8 ; CHECK: cmpne 9 ; CHECK: addne 10 ; CHECK: bxne lr 11 switch i32 %c, label %cond_next [ 12 i32 1, label %cond_true 13 i32 7, label %cond_true 14 ] 15 16 cond_true: 17 %tmp12 = add i32 %a, 1 18 %tmp1518 = add i32 %tmp12, %b 19 ret i32 %tmp1518 20 21 cond_next: 22 %tmp15 = add i32 %b, %a 23 ret i32 %tmp15 24 } 25 26 define i32 @t2(i32 %a, i32 %b) nounwind { 27 entry: 28 ; CHECK-LABEL: t2: 29 ; CHECK: ite {{gt|le}} 30 ; CHECK-DAG: suble 31 ; CHECK-DAG: subgt 32 %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1] 33 br i1 %tmp1434, label %bb17, label %bb.outer 34 35 bb.outer: ; preds = %cond_false, %entry 36 %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5] 37 %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 38 br label %bb 39 40 bb: ; preds = %cond_true, %bb.outer 41 %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2] 42 %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1] 43 %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1] 44 %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6] 45 %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1] 46 br i1 %tmp3, label %cond_true, label %cond_false 47 48 cond_true: ; preds = %bb 49 %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2] 50 %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1] 51 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 52 br i1 %tmp1437, label %bb17, label %bb 53 54 cond_false: ; preds = %bb 55 %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2] 56 %tmp14 = icmp eq i32 %a_addr.026.0, %tmp10 ; <i1> [#uses=1] 57 br i1 %tmp14, label %bb17, label %bb.outer 58 59 bb17: ; preds = %cond_false, %cond_true, %entry 60 %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 61 ret i32 %a_addr.026.1 62 } 63 64 define i32 @t2_nomerge(i32 %a, i32 %b) nounwind { 65 entry: 66 ; CHECK-LABEL: t2_nomerge: 67 ; CHECK-NOT: ite {{gt|le}} 68 ; CHECK-NOT: suble 69 ; CHECK-NOT: subgt 70 %tmp1434 = icmp eq i32 %a, %b ; <i1> [#uses=1] 71 br i1 %tmp1434, label %bb17, label %bb.outer 72 73 bb.outer: ; preds = %cond_false, %entry 74 %b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ] ; <i32> [#uses=5] 75 %a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 76 br label %bb 77 78 bb: ; preds = %cond_true, %bb.outer 79 %indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ] ; <i32> [#uses=2] 80 %tmp. = sub i32 0, %b_addr.021.0.ph ; <i32> [#uses=1] 81 %tmp.40 = mul i32 %indvar, %tmp. ; <i32> [#uses=1] 82 %a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph ; <i32> [#uses=6] 83 %tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph ; <i1> [#uses=1] 84 br i1 %tmp3, label %cond_true, label %cond_false 85 86 cond_true: ; preds = %bb 87 %tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph ; <i32> [#uses=2] 88 %tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph ; <i1> [#uses=1] 89 %indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1] 90 br i1 %tmp1437, label %bb17, label %bb 91 92 cond_false: ; preds = %bb 93 %tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0 ; <i32> [#uses=2] 94 %tmp14 = icmp eq i32 %b_addr.021.0.ph, %tmp10 ; <i1> [#uses=1] 95 br i1 %tmp14, label %bb17, label %bb.outer 96 97 bb17: ; preds = %cond_false, %cond_true, %entry 98 %a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ] ; <i32> [#uses=1] 99 ret i32 %a_addr.026.1 100 } 101 102 @x = external global i32* ; <i32**> [#uses=1] 103 104 define void @foo(i32 %a) nounwind { 105 entry: 106 %tmp = load i32*, i32** @x ; <i32*> [#uses=1] 107 store i32 %a, i32* %tmp 108 ret void 109 } 110 111 define void @t3(i32 %a, i32 %b) nounwind { 112 entry: 113 ; CHECK-LABEL: t3: 114 ; CHECK: it lt 115 ; CHECK-NEXT: bxlt lr 116 ; CHECK: mov r0, r1 117 ; CHECK: bl {{_?}}foo 118 %tmp1 = icmp sgt i32 %a, 10 ; <i1> [#uses=1] 119 br i1 %tmp1, label %cond_true, label %UnifiedReturnBlock 120 121 cond_true: ; preds = %entry 122 call void @foo( i32 %b ) 123 ret void 124 125 UnifiedReturnBlock: ; preds = %entry 126 ret void 127 } 128
