1 ; RUN: opt -inline < %s -S -o - -inline-threshold=8 | FileCheck %s 2 3 target datalayout = "p:32:32" 4 5 declare void @llvm.lifetime.start(i64 %size, i8* nocapture %ptr) 6 7 @glbl = external global i32 8 9 define void @outer1() { 10 ; CHECK-LABEL: @outer1( 11 ; CHECK-NOT: call void @inner1 12 %ptr = alloca i32 13 call void @inner1(i32* %ptr) 14 ret void 15 } 16 17 define void @inner1(i32 *%ptr) { 18 %A = load i32, i32* %ptr 19 store i32 0, i32* %ptr 20 %C = getelementptr inbounds i32, i32* %ptr, i32 0 21 %D = getelementptr inbounds i32, i32* %ptr, i32 1 22 %E = bitcast i32* %ptr to i8* 23 %F = select i1 false, i32* %ptr, i32* @glbl 24 call void @llvm.lifetime.start(i64 0, i8* %E) 25 ret void 26 } 27 28 define void @outer2() { 29 ; CHECK-LABEL: @outer2( 30 ; CHECK: call void @inner2 31 %ptr = alloca i32 32 call void @inner2(i32* %ptr) 33 ret void 34 } 35 36 ; %D poisons this call, scalar-repl can't handle that instruction. 37 define void @inner2(i32 *%ptr) { 38 %A = load i32, i32* %ptr 39 store i32 0, i32* %ptr 40 %C = getelementptr inbounds i32, i32* %ptr, i32 0 41 %D = getelementptr inbounds i32, i32* %ptr, i32 %A 42 %E = bitcast i32* %ptr to i8* 43 %F = select i1 false, i32* %ptr, i32* @glbl 44 call void @llvm.lifetime.start(i64 0, i8* %E) 45 ret void 46 } 47 48 define void @outer3() { 49 ; CHECK-LABEL: @outer3( 50 ; CHECK-NOT: call void @inner3 51 %ptr = alloca i32 52 call void @inner3(i32* %ptr, i1 undef) 53 ret void 54 } 55 56 define void @inner3(i32 *%ptr, i1 %x) { 57 %A = icmp eq i32* %ptr, null 58 %B = and i1 %x, %A 59 br i1 %A, label %bb.true, label %bb.false 60 bb.true: 61 ; This block musn't be counted in the inline cost. 62 %t1 = load i32, i32* %ptr 63 %t2 = add i32 %t1, 1 64 %t3 = add i32 %t2, 1 65 %t4 = add i32 %t3, 1 66 %t5 = add i32 %t4, 1 67 %t6 = add i32 %t5, 1 68 %t7 = add i32 %t6, 1 69 %t8 = add i32 %t7, 1 70 %t9 = add i32 %t8, 1 71 %t10 = add i32 %t9, 1 72 %t11 = add i32 %t10, 1 73 %t12 = add i32 %t11, 1 74 %t13 = add i32 %t12, 1 75 %t14 = add i32 %t13, 1 76 %t15 = add i32 %t14, 1 77 %t16 = add i32 %t15, 1 78 %t17 = add i32 %t16, 1 79 %t18 = add i32 %t17, 1 80 %t19 = add i32 %t18, 1 81 %t20 = add i32 %t19, 1 82 ret void 83 bb.false: 84 ret void 85 } 86 87 define void @outer4(i32 %A) { 88 ; CHECK-LABEL: @outer4( 89 ; CHECK-NOT: call void @inner4 90 %ptr = alloca i32 91 call void @inner4(i32* %ptr, i32 %A) 92 ret void 93 } 94 95 ; %B poisons this call, scalar-repl can't handle that instruction. However, we 96 ; still want to detect that the icmp and branch *can* be handled. 97 define void @inner4(i32 *%ptr, i32 %A) { 98 %B = getelementptr inbounds i32, i32* %ptr, i32 %A 99 %C = icmp eq i32* %ptr, null 100 br i1 %C, label %bb.true, label %bb.false 101 bb.true: 102 ; This block musn't be counted in the inline cost. 103 %t1 = load i32, i32* %ptr 104 %t2 = add i32 %t1, 1 105 %t3 = add i32 %t2, 1 106 %t4 = add i32 %t3, 1 107 %t5 = add i32 %t4, 1 108 %t6 = add i32 %t5, 1 109 %t7 = add i32 %t6, 1 110 %t8 = add i32 %t7, 1 111 %t9 = add i32 %t8, 1 112 %t10 = add i32 %t9, 1 113 %t11 = add i32 %t10, 1 114 %t12 = add i32 %t11, 1 115 %t13 = add i32 %t12, 1 116 %t14 = add i32 %t13, 1 117 %t15 = add i32 %t14, 1 118 %t16 = add i32 %t15, 1 119 %t17 = add i32 %t16, 1 120 %t18 = add i32 %t17, 1 121 %t19 = add i32 %t18, 1 122 %t20 = add i32 %t19, 1 123 ret void 124 bb.false: 125 ret void 126 } 127 128 define void @outer5() { 129 ; CHECK-LABEL: @outer5( 130 ; CHECK-NOT: call void @inner5 131 %ptr = alloca i32 132 call void @inner5(i1 false, i32* %ptr) 133 ret void 134 } 135 136 ; %D poisons this call, scalar-repl can't handle that instruction. However, if 137 ; the flag is set appropriately, the poisoning instruction is inside of dead 138 ; code, and so shouldn't be counted. 139 define void @inner5(i1 %flag, i32 *%ptr) { 140 %A = load i32, i32* %ptr 141 store i32 0, i32* %ptr 142 %C = getelementptr inbounds i32, i32* %ptr, i32 0 143 br i1 %flag, label %if.then, label %exit 144 145 if.then: 146 %D = getelementptr inbounds i32, i32* %ptr, i32 %A 147 %E = bitcast i32* %ptr to i8* 148 %F = select i1 false, i32* %ptr, i32* @glbl 149 call void @llvm.lifetime.start(i64 0, i8* %E) 150 ret void 151 152 exit: 153 ret void 154 } 155 156
