-; RUN: opt < %s -memcpyopt -dse -S | grep {call.*memcpy} | count 1
+; RUN: opt < %s -basicaa -memcpyopt -dse -S | FileCheck %s
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"
target triple = "i686-apple-darwin9"
-define void @ccosl({ x86_fp80, x86_fp80 }* sret %agg.result, x86_fp80 %z.0, x86_fp80 %z.1) nounwind {
+%0 = type { x86_fp80, x86_fp80 }
+%1 = type { i32, i32 }
+
+define void @test1(%0* sret %agg.result, x86_fp80 %z.0, x86_fp80 %z.1) nounwind {
+entry:
+ %tmp2 = alloca %0
+ %memtmp = alloca %0, align 16
+ %tmp5 = fsub x86_fp80 0xK80000000000000000000, %z.1
+ call void @ccoshl(%0* sret %memtmp, x86_fp80 %tmp5, x86_fp80 %z.0) nounwind
+ %tmp219 = bitcast %0* %tmp2 to i8*
+ %memtmp20 = bitcast %0* %memtmp to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp219, i8* %memtmp20, i32 32, i32 16, i1 false)
+ %agg.result21 = bitcast %0* %agg.result to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %agg.result21, i8* %tmp219, i32 32, i32 16, i1 false)
+ ret void
+
+; Check that one of the memcpy's are removed.
+;; FIXME: PR 8643 We should be able to eliminate the last memcpy here.
+
+; CHECK: @test1
+; CHECK: call void @ccoshl
+; CHECK: call void @llvm.memcpy
+; CHECK-NOT: llvm.memcpy
+; CHECK: ret void
+}
+
+declare void @ccoshl(%0* sret , x86_fp80, x86_fp80) nounwind
+
+
+; The intermediate alloca and one of the memcpy's should be eliminated, the
+; other should be related with a memmove.
+define void @test2(i8* %P, i8* %Q) nounwind {
+ %memtmp = alloca %0, align 16
+ %R = bitcast %0* %memtmp to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %R, i8* %P, i32 32, i32 16, i1 false)
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %Q, i8* %R, i32 32, i32 16, i1 false)
+ ret void
+
+; CHECK: @test2
+; CHECK-NEXT: call void @llvm.memmove{{.*}}(i8* %Q, i8* %P
+; CHECK-NEXT: ret void
+}
+
+
+
+
+@x = external global %0
+
+define void @test3(%0* noalias sret %agg.result) nounwind {
+ %x.0 = alloca %0
+ %x.01 = bitcast %0* %x.0 to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %x.01, i8* bitcast (%0* @x to i8*), i32 32, i32 16, i1 false)
+ %agg.result2 = bitcast %0* %agg.result to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %agg.result2, i8* %x.01, i32 32, i32 16, i1 false)
+ ret void
+; CHECK: @test3
+; CHECK-NEXT: %agg.result1 = bitcast
+; CHECK-NEXT: call void @llvm.memcpy
+; CHECK-NEXT: ret void
+}
+
+
+; PR8644
+define void @test4(i8 *%P) {
+ %A = alloca %1
+ %a = bitcast %1* %A to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %P, i64 8, i32 4, i1 false)
+ call void @test4a(i8* align 1 byval %a)
+ ret void
+; CHECK: @test4
+; CHECK-NEXT: call void @test4a(
+}
+
+declare void @test4a(i8* align 1 byval)
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
+
+%struct.S = type { i128, [4 x i8]}
+
+@sS = external global %struct.S, align 16
+
+declare void @test5a(%struct.S* align 16 byval) nounwind ssp
+
+
+; rdar://8713376 - This memcpy can't be eliminated.
+define i32 @test5(i32 %x) nounwind ssp {
+entry:
+ %y = alloca %struct.S, align 16
+ %tmp = bitcast %struct.S* %y to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* bitcast (%struct.S* @sS to i8*), i64 32, i32 16, i1 false)
+ %a = getelementptr %struct.S* %y, i64 0, i32 1, i64 0
+ store i8 4, i8* %a
+ call void @test5a(%struct.S* align 16 byval %y)
+ ret i32 0
+ ; CHECK: @test5(
+ ; CHECK: store i8 4
+ ; CHECK: call void @test5a(%struct.S* align 16 byval %y)
+}
+
+;; Noop memcpy should be zapped.
+define void @test6(i8 *%P) {
+ call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %P, i64 8, i32 4, i1 false)
+ ret void
+; CHECK: @test6
+; CHECK-NEXT: ret void
+}
+
+
+; PR9794 - Should forward memcpy into byval argument even though the memcpy
+; isn't itself 8 byte aligned.
+%struct.p = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
+
+define i32 @test7(%struct.p* nocapture align 8 byval %q) nounwind ssp {
entry:
- %tmp2 = alloca { x86_fp80, x86_fp80 } ; <{ x86_fp80, x86_fp80 }*> [#uses=1]
- %memtmp = alloca { x86_fp80, x86_fp80 }, align 16 ; <{ x86_fp80, x86_fp80 }*> [#uses=2]
- %tmp5 = fsub x86_fp80 0xK80000000000000000000, %z.1 ; <x86_fp80> [#uses=1]
- call void @ccoshl( { x86_fp80, x86_fp80 }* sret %memtmp, x86_fp80 %tmp5, x86_fp80 %z.0 ) nounwind
- %tmp219 = bitcast { x86_fp80, x86_fp80 }* %tmp2 to i8* ; <i8*> [#uses=2]
- %memtmp20 = bitcast { x86_fp80, x86_fp80 }* %memtmp to i8* ; <i8*> [#uses=1]
- call void @llvm.memcpy.i32( i8* %tmp219, i8* %memtmp20, i32 32, i32 16 )
- %agg.result21 = bitcast { x86_fp80, x86_fp80 }* %agg.result to i8* ; <i8*> [#uses=1]
- call void @llvm.memcpy.i32( i8* %agg.result21, i8* %tmp219, i32 32, i32 16 )
- ret void
+ %agg.tmp = alloca %struct.p, align 4
+ %tmp = bitcast %struct.p* %agg.tmp to i8*
+ %tmp1 = bitcast %struct.p* %q to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* %tmp1, i64 48, i32 4, i1 false)
+ %call = call i32 @g(%struct.p* align 8 byval %agg.tmp) nounwind
+ ret i32 %call
+; CHECK: @test7
+; CHECK: call i32 @g(%struct.p* align 8 byval %q) nounwind
+}
+
+declare i32 @g(%struct.p* align 8 byval)
+
+declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
+
+; PR11142 - When looking for a memcpy-memcpy dependency, don't get stuck on
+; instructions between the memcpy's that only affect the destination pointer.
+@test8.str = internal constant [7 x i8] c"ABCDEF\00"
+
+define void @test8() {
+; CHECK: test8
+; CHECK-NOT: memcpy
+ %A = tail call i8* @malloc(i32 10)
+ %B = getelementptr inbounds i8* %A, i64 2
+ 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)
+ %C = tail call i8* @malloc(i32 10)
+ %D = getelementptr inbounds i8* %C, i64 2
+ tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %D, i8* %B, i32 7, i32 1, i1 false)
+ ret void
+; CHECK: ret void
}
-declare void @ccoshl({ x86_fp80, x86_fp80 }* sret , x86_fp80, x86_fp80) nounwind
+declare noalias i8* @malloc(i32)
+
+; rdar://11341081
+%struct.big = type { [50 x i32] }
+
+define void @test9() nounwind ssp uwtable {
+entry:
+; CHECK: test9
+; CHECK: f1
+; CHECK-NOT: memcpy
+; CHECK: f2
+ %b = alloca %struct.big, align 4
+ %tmp = alloca %struct.big, align 4
+ call void @f1(%struct.big* sret %tmp)
+ %0 = bitcast %struct.big* %b to i8*
+ %1 = bitcast %struct.big* %tmp to i8*
+ call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 200, i32 4, i1 false)
+ call void @f2(%struct.big* %b)
+ ret void
+}
-declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) nounwind
+declare void @f1(%struct.big* sret)
+declare void @f2(%struct.big*)
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