1 ; RUN: opt < %s -basicaa -memcpyopt -dse -S | FileCheck %s
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"
6 %0 = type { x86_fp80, x86_fp80 }
9 define void @test1(%0* sret %agg.result, x86_fp80 %z.0, x86_fp80 %z.1) nounwind {
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)
22 ; Check that one of the memcpy's are removed.
23 ;; FIXME: PR 8643 We should be able to eliminate the last memcpy here.
26 ; CHECK: call void @ccoshl
27 ; CHECK: call void @llvm.memcpy
28 ; CHECK-NOT: llvm.memcpy
32 declare void @ccoshl(%0* sret , x86_fp80, x86_fp80) nounwind
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)
45 ; CHECK-NEXT: call void @llvm.memmove{{.*}}(i8* %Q, i8* %P
46 ; CHECK-NEXT: ret void
52 @x = external global %0
54 define void @test3(%0* noalias sret %agg.result) nounwind {
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)
62 ; CHECK-NEXT: %agg.result1 = bitcast
63 ; CHECK-NEXT: call void @llvm.memcpy
64 ; CHECK-NEXT: ret void
69 define void @test4(i8 *%P) {
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)
76 ; CHECK-NEXT: call void @test4a(
79 declare void @test4a(i8* align 1 byval)
80 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
82 %struct.S = type { i128, [4 x i8]}
84 @sS = external global %struct.S, align 16
86 declare void @test5a(%struct.S* align 16 byval) nounwind ssp
89 ; rdar://8713376 - This memcpy can't be eliminated.
90 define i32 @test5(i32 %x) nounwind ssp {
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
97 call void @test5a(%struct.S* align 16 byval %y)
101 ; CHECK: call void @test5a(%struct.S* byval align 16 %y)
104 ;; Noop memcpy should be zapped.
105 define void @test6(i8 *%P) {
106 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %P, i64 8, i32 4, i1 false)
109 ; CHECK-NEXT: ret void
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 }
117 define i32 @test7(%struct.p* nocapture align 8 byval %q) nounwind ssp {
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* align 8 byval %agg.tmp) nounwind
126 ; CHECK: call i32 @g(%struct.p* byval align 8 %q) [[NUW:#[0-9]+]]
129 declare i32 @g(%struct.p* align 8 byval)
131 declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
133 ; PR11142 - When looking for a memcpy-memcpy dependency, don't get stuck on
134 ; instructions between the memcpy's that only affect the destination pointer.
135 @test8.str = internal constant [7 x i8] c"ABCDEF\00"
137 define void @test8() {
140 %A = tail call i8* @malloc(i32 10)
141 %B = getelementptr inbounds i8* %A, i64 2
142 tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %B, i8* getelementptr inbounds ([7 x i8]* @test8.str, i64 0, i64 0), i32 7, i32 1, i1 false)
143 %C = tail call i8* @malloc(i32 10)
144 %D = getelementptr inbounds i8* %C, i64 2
145 tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %D, i8* %B, i32 7, i32 1, i1 false)
150 declare noalias i8* @malloc(i32)
153 %struct.big = type { [50 x i32] }
155 define void @test9() nounwind ssp uwtable {
161 %b = alloca %struct.big, align 4
162 %tmp = alloca %struct.big, align 4
163 call void @f1(%struct.big* sret %tmp)
164 %0 = bitcast %struct.big* %b to i8*
165 %1 = bitcast %struct.big* %tmp to i8*
166 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 200, i32 4, i1 false)
167 call void @f2(%struct.big* %b)
172 ; Test10 triggered assertion when the compiler try to get the size of the
173 ; opaque type of *x, where the x is the formal argument with attribute 'sret'.
175 %opaque = type opaque
176 declare void @foo(i32* noalias nocapture)
178 define void @test10(%opaque* noalias nocapture sret %x, i32 %y) {
179 %a = alloca i32, align 4
180 store i32 %y, i32* %a
181 call void @foo(i32* noalias nocapture %a)
183 %d = bitcast %opaque* %x to i32*
184 store i32 %c, i32* %d
188 declare void @f1(%struct.big* sret)
189 declare void @f2(%struct.big*)
191 ; CHECK: attributes [[NUW]] = { nounwind }
192 ; CHECK: attributes #1 = { nounwind ssp }
193 ; CHECK: attributes #2 = { nounwind ssp uwtable }