1 ; RUN: opt -alignment-from-assumptions -S < %s | FileCheck %s 2 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 3 target triple = "x86_64-unknown-linux-gnu" 4 5 %type1 = type { %type2 } 6 %type2 = type { [4 x i8] } 7 8 ; Function Attrs: nounwind 9 declare void @llvm.assume(i1) #0 10 11 ; Function Attrs: nounwind readnone 12 declare i32 @llvm.bswap.i32(i32) #1 13 14 ; Function Attrs: nounwind uwtable 15 define void @test1() unnamed_addr #2 align 2 { 16 17 ; CHECK-LABEL: @test1 18 19 entry: 20 br i1 undef, label %if.then, label %if.end 21 22 if.then: ; preds = %entry 23 unreachable 24 25 if.end: ; preds = %entry 26 br i1 undef, label %return, label %if.end8 27 28 if.end8: ; preds = %if.end 29 br i1 undef, label %if.then13, label %if.end14 30 31 if.then13: ; preds = %if.end8 32 unreachable 33 34 if.end14: ; preds = %if.end8 35 br i1 undef, label %cond.false.i129, label %cond.end.i136 36 37 cond.false.i129: ; preds = %if.end14 38 unreachable 39 40 cond.end.i136: ; preds = %if.end14 41 br i1 undef, label %land.lhs.true.i, label %if.end.i145 42 43 land.lhs.true.i: ; preds = %cond.end.i136 44 br i1 undef, label %if.end.i145, label %if.then.i137 45 46 if.then.i137: ; preds = %land.lhs.true.i 47 br i1 undef, label %cond.false8.i, label %cond.end9.i 48 49 cond.false8.i: ; preds = %if.then.i137 50 unreachable 51 52 cond.end9.i: ; preds = %if.then.i137 53 br i1 undef, label %if.then23, label %if.end24 54 55 if.end.i145: ; preds = %land.lhs.true.i, %cond.end.i136 56 unreachable 57 58 if.then23: ; preds = %cond.end9.i 59 unreachable 60 61 if.end24: ; preds = %cond.end9.i 62 br i1 undef, label %for.end, label %for.body.lr.ph 63 64 for.body.lr.ph: ; preds = %if.end24 65 unreachable 66 67 for.end: ; preds = %if.end24 68 br i1 undef, label %if.end123, label %if.then121 69 70 if.then121: ; preds = %for.end 71 unreachable 72 73 if.end123: ; preds = %for.end 74 br i1 undef, label %if.end150, label %if.then126 75 76 if.then126: ; preds = %if.end123 77 %ptrint.i.i185 = ptrtoint %type1* undef to i64 78 %maskedptr.i.i186 = and i64 %ptrint.i.i185, 1 79 %maskcond.i.i187 = icmp eq i64 %maskedptr.i.i186, 0 80 tail call void @llvm.assume(i1 %maskcond.i.i187) #0 81 %ret.0..sroa_cast.i.i188 = bitcast %type1* undef to i32* 82 %ret.0.copyload.i.i189 = load i32, i32* %ret.0..sroa_cast.i.i188, align 2 83 84 ; CHECK: load {{.*}} align 2 85 86 %0 = tail call i32 @llvm.bswap.i32(i32 %ret.0.copyload.i.i189) #0 87 %conv131 = zext i32 %0 to i64 88 %add.ptr132 = getelementptr inbounds i8, i8* undef, i64 %conv131 89 %1 = bitcast i8* %add.ptr132 to %type1* 90 br i1 undef, label %if.end150, label %if.end.i173 91 92 if.end.i173: ; preds = %if.then126 93 br i1 undef, label %test1.exit, label %cond.false.i.i.i.i174 94 95 cond.false.i.i.i.i174: ; preds = %if.end.i173 96 unreachable 97 98 test1.exit: ; preds = %if.end.i173 99 br i1 undef, label %test1a.exit, label %if.end.i124 100 101 if.end.i124: ; preds = %test1.exit 102 unreachable 103 104 test1a.exit: ; preds = %test1.exit 105 br i1 undef, label %if.end150, label %for.body137.lr.ph 106 107 for.body137.lr.ph: ; preds = %test1a.exit 108 br label %for.body137 109 110 for.body137: ; preds = %test1b.exit, %for.body137.lr.ph 111 %ShndxTable.0309 = phi %type1* [ %1, %for.body137.lr.ph ], [ %incdec.ptr, %test1b.exit ] 112 %ret.0..sroa_cast.i.i106 = bitcast %type1* %ShndxTable.0309 to i32* 113 br i1 undef, label %for.body137.if.end146_crit_edge, label %if.then140 114 115 for.body137.if.end146_crit_edge: ; preds = %for.body137 116 %incdec.ptr = getelementptr inbounds %type1, %type1* %ShndxTable.0309, i64 1 117 br i1 undef, label %cond.false.i70, label %cond.end.i 118 119 if.then140: ; preds = %for.body137 120 %ret.0.copyload.i.i102 = load i32, i32* %ret.0..sroa_cast.i.i106, align 2 121 122 ; CHECK: load {{.*}} align 2 123 124 unreachable 125 126 cond.false.i70: ; preds = %for.body137.if.end146_crit_edge 127 unreachable 128 129 cond.end.i: ; preds = %for.body137.if.end146_crit_edge 130 br i1 undef, label %test1b.exit, label %cond.false.i.i 131 132 cond.false.i.i: ; preds = %cond.end.i 133 unreachable 134 135 test1b.exit: ; preds = %cond.end.i 136 br i1 undef, label %if.end150, label %for.body137 137 138 if.end150: ; preds = %test1b.exit, %test1a.exit, %if.then126, %if.end123 139 br i1 undef, label %for.end176, label %for.body155.lr.ph 140 141 for.body155.lr.ph: ; preds = %if.end150 142 unreachable 143 144 for.end176: ; preds = %if.end150 145 unreachable 146 147 return: ; preds = %if.end 148 ret void 149 } 150 151 attributes #0 = { nounwind } 152 attributes #1 = { nounwind readnone } 153 attributes #2 = { nounwind uwtable } 154 155
