1 ; RUN: opt < %s -basicaa -memcpyopt -dse -S | FileCheck %s 2 3 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" 4 target triple = "i686-apple-darwin9" 5 6 %0 = type { x86_fp80, x86_fp80 } 7 %1 = type { i32, i32 } 8 9 define void @test1(%0* sret %agg.result, x86_fp80 %z.0, x86_fp80 %z.1) nounwind { 10 entry: 11 %tmp2 = alloca %0 12 %memtmp = alloca %0, align 16 13 %tmp5 = fsub x86_fp80 0xK80000000000000000000, %z.1 14 call void @ccoshl(%0* sret %memtmp, x86_fp80 %tmp5, x86_fp80 %z.0) nounwind 15 %tmp219 = bitcast %0* %tmp2 to i8* 16 %memtmp20 = bitcast %0* %memtmp to i8* 17 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp219, i8* %memtmp20, i32 32, i32 16, i1 false) 18 %agg.result21 = bitcast %0* %agg.result to i8* 19 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %agg.result21, i8* %tmp219, i32 32, i32 16, i1 false) 20 ret void 21 22 ; Check that one of the memcpy's are removed. 23 ;; FIXME: PR 8643 We should be able to eliminate the last memcpy here. 24 25 ; CHECK-LABEL: @test1( 26 ; CHECK: call void @ccoshl 27 ; CHECK: call void @llvm.memcpy 28 ; CHECK-NOT: llvm.memcpy 29 ; CHECK: ret void 30 } 31 32 declare void @ccoshl(%0* nocapture sret, x86_fp80, x86_fp80) nounwind 33 34 35 ; The intermediate alloca and one of the memcpy's should be eliminated, the 36 ; other should be related with a memmove. 37 define void @test2(i8* %P, i8* %Q) nounwind { 38 %memtmp = alloca %0, align 16 39 %R = bitcast %0* %memtmp to i8* 40 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %R, i8* %P, i32 32, i32 16, i1 false) 41 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %Q, i8* %R, i32 32, i32 16, i1 false) 42 ret void 43 44 ; CHECK-LABEL: @test2( 45 ; CHECK-NEXT: call void @llvm.memmove{{.*}}(i8* %Q, i8* %P 46 ; CHECK-NEXT: ret void 47 } 48 49 50 51 52 @x = external global %0 53 54 define void @test3(%0* noalias sret %agg.result) nounwind { 55 %x.0 = alloca %0 56 %x.01 = bitcast %0* %x.0 to i8* 57 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %x.01, i8* bitcast (%0* @x to i8*), i32 32, i32 16, i1 false) 58 %agg.result2 = bitcast %0* %agg.result to i8* 59 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %agg.result2, i8* %x.01, i32 32, i32 16, i1 false) 60 ret void 61 ; CHECK-LABEL: @test3( 62 ; CHECK-NEXT: %agg.result1 = bitcast 63 ; CHECK-NEXT: call void @llvm.memcpy 64 ; CHECK-NEXT: ret void 65 } 66 67 68 ; PR8644 69 define void @test4(i8 *%P) { 70 %A = alloca %1 71 %a = bitcast %1* %A to i8* 72 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %P, i64 8, i32 4, i1 false) 73 call void @test4a(i8* align 1 byval %a) 74 ret void 75 ; CHECK-LABEL: @test4( 76 ; CHECK-NEXT: call void @test4a( 77 } 78 79 declare void @test4a(i8* align 1 byval) 80 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind 81 declare void @llvm.memcpy.p1i8.p1i8.i64(i8 addrspace(1)* nocapture, i8 addrspace(1)* nocapture, i64, i32, i1) nounwind 82 83 %struct.S = type { i128, [4 x i8]} 84 85 @sS = external global %struct.S, align 16 86 87 declare void @test5a(%struct.S* align 16 byval) nounwind ssp 88 89 90 ; rdar://8713376 - This memcpy can't be eliminated. 91 define i32 @test5(i32 %x) nounwind ssp { 92 entry: 93 %y = alloca %struct.S, align 16 94 %tmp = bitcast %struct.S* %y to i8* 95 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* bitcast (%struct.S* @sS to i8*), i64 32, i32 16, i1 false) 96 %a = getelementptr %struct.S, %struct.S* %y, i64 0, i32 1, i64 0 97 store i8 4, i8* %a 98 call void @test5a(%struct.S* align 16 byval %y) 99 ret i32 0 100 ; CHECK-LABEL: @test5( 101 ; CHECK: store i8 4 102 ; CHECK: call void @test5a(%struct.S* byval align 16 %y) 103 } 104 105 ;; Noop memcpy should be zapped. 106 define void @test6(i8 *%P) { 107 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %P, i64 8, i32 4, i1 false) 108 ret void 109 ; CHECK-LABEL: @test6( 110 ; CHECK-NEXT: ret void 111 } 112 113 114 ; PR9794 - Should forward memcpy into byval argument even though the memcpy 115 ; isn't itself 8 byte aligned. 116 %struct.p = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } 117 118 define i32 @test7(%struct.p* nocapture align 8 byval %q) nounwind ssp { 119 entry: 120 %agg.tmp = alloca %struct.p, align 4 121 %tmp = bitcast %struct.p* %agg.tmp to i8* 122 %tmp1 = bitcast %struct.p* %q to i8* 123 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* %tmp1, i64 48, i32 4, i1 false) 124 %call = call i32 @g(%struct.p* align 8 byval %agg.tmp) nounwind 125 ret i32 %call 126 ; CHECK-LABEL: @test7( 127 ; CHECK: call i32 @g(%struct.p* byval align 8 %q) [[NUW:#[0-9]+]] 128 } 129 130 declare i32 @g(%struct.p* align 8 byval) 131 132 declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind 133 134 ; PR11142 - When looking for a memcpy-memcpy dependency, don't get stuck on 135 ; instructions between the memcpy's that only affect the destination pointer. 136 @test8.str = internal constant [7 x i8] c"ABCDEF\00" 137 138 define void @test8() { 139 ; CHECK: test8 140 ; CHECK-NOT: memcpy 141 %A = tail call i8* @malloc(i32 10) 142 %B = getelementptr inbounds i8, i8* %A, i64 2 143 tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %B, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @test8.str, i64 0, i64 0), i32 7, i32 1, i1 false) 144 %C = tail call i8* @malloc(i32 10) 145 %D = getelementptr inbounds i8, i8* %C, i64 2 146 tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %D, i8* %B, i32 7, i32 1, i1 false) 147 ret void 148 ; CHECK: ret void 149 } 150 151 declare noalias i8* @malloc(i32) 152 153 ; rdar://11341081 154 %struct.big = type { [50 x i32] } 155 156 define void @test9_addrspacecast() nounwind ssp uwtable { 157 entry: 158 ; CHECK-LABEL: @test9_addrspacecast( 159 ; CHECK: f1 160 ; CHECK-NOT: memcpy 161 ; CHECK: f2 162 %b = alloca %struct.big, align 4 163 %tmp = alloca %struct.big, align 4 164 call void @f1(%struct.big* sret %tmp) 165 %0 = addrspacecast %struct.big* %b to i8 addrspace(1)* 166 %1 = addrspacecast %struct.big* %tmp to i8 addrspace(1)* 167 call void @llvm.memcpy.p1i8.p1i8.i64(i8 addrspace(1)* %0, i8 addrspace(1)* %1, i64 200, i32 4, i1 false) 168 call void @f2(%struct.big* %b) 169 ret void 170 } 171 172 define void @test9() nounwind ssp uwtable { 173 entry: 174 ; CHECK: test9 175 ; CHECK: f1 176 ; CHECK-NOT: memcpy 177 ; CHECK: f2 178 %b = alloca %struct.big, align 4 179 %tmp = alloca %struct.big, align 4 180 call void @f1(%struct.big* sret %tmp) 181 %0 = bitcast %struct.big* %b to i8* 182 %1 = bitcast %struct.big* %tmp to i8* 183 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 200, i32 4, i1 false) 184 call void @f2(%struct.big* %b) 185 ret void 186 } 187 188 ; rdar://14073661. 189 ; Test10 triggered assertion when the compiler try to get the size of the 190 ; opaque type of *x, where the x is the formal argument with attribute 'sret'. 191 192 %opaque = type opaque 193 declare void @foo(i32* noalias nocapture) 194 195 define void @test10(%opaque* noalias nocapture sret %x, i32 %y) { 196 %a = alloca i32, align 4 197 store i32 %y, i32* %a 198 call void @foo(i32* noalias nocapture %a) 199 %c = load i32, i32* %a 200 %d = bitcast %opaque* %x to i32* 201 store i32 %c, i32* %d 202 ret void 203 } 204 205 declare void @f1(%struct.big* nocapture sret) 206 declare void @f2(%struct.big*) 207 208 ; CHECK: attributes [[NUW]] = { nounwind } 209 ; CHECK: attributes #1 = { nounwind ssp } 210 ; CHECK: attributes #2 = { nounwind ssp uwtable } 211
