1; RUN: opt < %s -basicaa -memcpyopt -dse -S | FileCheck %s 2 3target 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" 4target triple = "i686-apple-darwin9" 5 6%0 = type { x86_fp80, x86_fp80 } 7%1 = type { i32, i32 } 8 9define void @test1(%0* sret %agg.result, x86_fp80 %z.0, x86_fp80 %z.1) nounwind { 10entry: 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: @test1 26; CHECK: call void @ccoshl 27; CHECK: call void @llvm.memcpy 28; CHECK-NOT: llvm.memcpy 29; CHECK: ret void 30} 31 32declare void @ccoshl(%0* 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. 37define 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: @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 54define 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: @test3 62; CHECK-NEXT: %agg.result2 = bitcast 63; CHECK-NEXT: call void @llvm.memcpy 64; CHECK-NEXT: ret void 65} 66 67 68; PR8644 69define 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* byval align 1 %a) 74 ret void 75; CHECK: @test4 76; CHECK-NEXT: call void @test4a( 77} 78 79declare void @test4a(i8* byval align 1) 80declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind 81 82%struct.S = type { i128, [4 x i8]} 83 84@sS = external global %struct.S, align 16 85 86declare void @test5a(%struct.S* byval align 16) nounwind ssp 87 88 89; rdar://8713376 - This memcpy can't be eliminated. 90define i32 @test5(i32 %x) nounwind ssp { 91entry: 92 %y = alloca %struct.S, align 16 93 %tmp = bitcast %struct.S* %y to i8* 94 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* bitcast (%struct.S* @sS to i8*), i64 32, i32 16, i1 false) 95 %a = getelementptr %struct.S* %y, i64 0, i32 1, i64 0 96 store i8 4, i8* %a 97 call void @test5a(%struct.S* byval align 16 %y) 98 ret i32 0 99 ; CHECK: @test5( 100 ; CHECK: store i8 4 101 ; CHECK: call void @test5a(%struct.S* byval align 16 %y) 102} 103 104;; Noop memcpy should be zapped. 105define void @test6(i8 *%P) { 106 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %P, i64 8, i32 4, i1 false) 107 ret void 108; CHECK: @test6 109; CHECK-NEXT: ret void 110} 111 112 113; PR9794 - Should forward memcpy into byval argument even though the memcpy 114; isn't itself 8 byte aligned. 115%struct.p = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 } 116 117define i32 @test7(%struct.p* nocapture byval align 8 %q) nounwind ssp { 118entry: 119 %agg.tmp = alloca %struct.p, align 4 120 %tmp = bitcast %struct.p* %agg.tmp to i8* 121 %tmp1 = bitcast %struct.p* %q to i8* 122 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* %tmp1, i64 48, i32 4, i1 false) 123 %call = call i32 @g(%struct.p* byval align 8 %agg.tmp) nounwind 124 ret i32 %call 125; CHECK: @test7 126; CHECK: call i32 @g(%struct.p* byval align 8 %q) nounwind 127} 128 129declare i32 @g(%struct.p* byval align 8) 130 131declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind 132 133