227 lines
7.5 KiB
LLVM
227 lines
7.5 KiB
LLVM
; RUN: opt < %s -basicaa -memcpyopt -dse -S | FileCheck %s
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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"
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target triple = "i686-apple-darwin9"
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%0 = type { x86_fp80, x86_fp80 }
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%1 = type { i32, i32 }
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define void @test1(%0* sret %agg.result, x86_fp80 %z.0, x86_fp80 %z.1) nounwind {
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entry:
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%tmp2 = alloca %0
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%memtmp = alloca %0, align 16
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%tmp5 = fsub x86_fp80 0xK80000000000000000000, %z.1
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call void @ccoshl(%0* sret %memtmp, x86_fp80 %tmp5, x86_fp80 %z.0) nounwind
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%tmp219 = bitcast %0* %tmp2 to i8*
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%memtmp20 = bitcast %0* %memtmp to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp219, i8* %memtmp20, i32 32, i32 16, i1 false)
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%agg.result21 = bitcast %0* %agg.result to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %agg.result21, i8* %tmp219, i32 32, i32 16, i1 false)
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ret void
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; Check that one of the memcpy's are removed.
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;; FIXME: PR 8643 We should be able to eliminate the last memcpy here.
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; CHECK-LABEL: @test1(
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; CHECK: call void @ccoshl
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; CHECK: call void @llvm.memcpy
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; CHECK-NOT: llvm.memcpy
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; CHECK: ret void
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}
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declare void @ccoshl(%0* nocapture sret, x86_fp80, x86_fp80) nounwind
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; The intermediate alloca and one of the memcpy's should be eliminated, the
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; other should be related with a memmove.
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define void @test2(i8* %P, i8* %Q) nounwind {
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%memtmp = alloca %0, align 16
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%R = bitcast %0* %memtmp to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %R, i8* %P, i32 32, i32 16, i1 false)
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %Q, i8* %R, i32 32, i32 16, i1 false)
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ret void
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: call void @llvm.memmove{{.*}}(i8* %Q, i8* %P
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; CHECK-NEXT: ret void
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}
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@x = external global %0
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define void @test3(%0* noalias sret %agg.result) nounwind {
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%x.0 = alloca %0
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%x.01 = bitcast %0* %x.0 to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %x.01, i8* bitcast (%0* @x to i8*), i32 32, i32 16, i1 false)
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%agg.result2 = bitcast %0* %agg.result to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %agg.result2, i8* %x.01, i32 32, i32 16, i1 false)
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ret void
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: %agg.result1 = bitcast
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; CHECK-NEXT: call void @llvm.memcpy
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; CHECK-NEXT: ret void
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}
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; PR8644
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define void @test4(i8 *%P) {
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%A = alloca %1
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%a = bitcast %1* %A to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %P, i64 8, i32 4, i1 false)
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call void @test4a(i8* align 1 byval %a)
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ret void
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: call void @test4a(
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}
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declare void @test4a(i8* align 1 byval)
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
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declare void @llvm.memcpy.p1i8.p1i8.i64(i8 addrspace(1)* nocapture, i8 addrspace(1)* nocapture, i64, i32, i1) nounwind
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%struct.S = type { i128, [4 x i8]}
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@sS = external global %struct.S, align 16
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declare void @test5a(%struct.S* align 16 byval) nounwind ssp
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; rdar://8713376 - This memcpy can't be eliminated.
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define i32 @test5(i32 %x) nounwind ssp {
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entry:
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%y = alloca %struct.S, align 16
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%tmp = bitcast %struct.S* %y to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* bitcast (%struct.S* @sS to i8*), i64 32, i32 16, i1 false)
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%a = getelementptr %struct.S, %struct.S* %y, i64 0, i32 1, i64 0
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store i8 4, i8* %a
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call void @test5a(%struct.S* align 16 byval %y)
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ret i32 0
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; CHECK-LABEL: @test5(
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; CHECK: store i8 4
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; CHECK: call void @test5a(%struct.S* byval align 16 %y)
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}
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;; Noop memcpy should be zapped.
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define void @test6(i8 *%P) {
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %P, i8* %P, i64 8, i32 4, i1 false)
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ret void
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: ret void
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}
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; PR9794 - Should forward memcpy into byval argument even though the memcpy
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; isn't itself 8 byte aligned.
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%struct.p = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
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define i32 @test7(%struct.p* nocapture align 8 byval %q) nounwind ssp {
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entry:
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%agg.tmp = alloca %struct.p, align 4
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%tmp = bitcast %struct.p* %agg.tmp to i8*
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%tmp1 = bitcast %struct.p* %q to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %tmp, i8* %tmp1, i64 48, i32 4, i1 false)
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%call = call i32 @g(%struct.p* align 8 byval %agg.tmp) nounwind
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ret i32 %call
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; CHECK-LABEL: @test7(
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; CHECK: call i32 @g(%struct.p* byval align 8 %q) [[NUW:#[0-9]+]]
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}
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declare i32 @g(%struct.p* align 8 byval)
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
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; PR11142 - When looking for a memcpy-memcpy dependency, don't get stuck on
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; instructions between the memcpy's that only affect the destination pointer.
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@test8.str = internal constant [7 x i8] c"ABCDEF\00"
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define void @test8() {
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; CHECK: test8
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; CHECK-NOT: memcpy
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%A = tail call i8* @malloc(i32 10)
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%B = getelementptr inbounds i8, i8* %A, i64 2
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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)
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%C = tail call i8* @malloc(i32 10)
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%D = getelementptr inbounds i8, i8* %C, i64 2
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tail call void @llvm.memcpy.p0i8.p0i8.i32(i8* %D, i8* %B, i32 7, i32 1, i1 false)
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ret void
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; CHECK: ret void
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}
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declare noalias i8* @malloc(i32)
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; rdar://11341081
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%struct.big = type { [50 x i32] }
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define void @test9_addrspacecast() nounwind ssp uwtable {
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entry:
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; CHECK-LABEL: @test9_addrspacecast(
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; CHECK: f1
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; CHECK-NOT: memcpy
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; CHECK: f2
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%b = alloca %struct.big, align 4
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%tmp = alloca %struct.big, align 4
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call void @f1(%struct.big* sret %tmp)
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%0 = addrspacecast %struct.big* %b to i8 addrspace(1)*
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%1 = addrspacecast %struct.big* %tmp to i8 addrspace(1)*
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call void @llvm.memcpy.p1i8.p1i8.i64(i8 addrspace(1)* %0, i8 addrspace(1)* %1, i64 200, i32 4, i1 false)
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call void @f2(%struct.big* %b)
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ret void
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}
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define void @test9() nounwind ssp uwtable {
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entry:
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; CHECK: test9
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; CHECK: f1
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; CHECK-NOT: memcpy
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; CHECK: f2
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%b = alloca %struct.big, align 4
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%tmp = alloca %struct.big, align 4
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call void @f1(%struct.big* sret %tmp)
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%0 = bitcast %struct.big* %b to i8*
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%1 = bitcast %struct.big* %tmp to i8*
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 200, i32 4, i1 false)
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call void @f2(%struct.big* %b)
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ret void
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}
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; rdar://14073661.
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; Test10 triggered assertion when the compiler try to get the size of the
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; opaque type of *x, where the x is the formal argument with attribute 'sret'.
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%opaque = type opaque
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declare void @foo(i32* noalias nocapture)
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define void @test10(%opaque* noalias nocapture sret %x, i32 %y) {
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%a = alloca i32, align 4
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store i32 %y, i32* %a
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call void @foo(i32* noalias nocapture %a)
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%c = load i32, i32* %a
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%d = bitcast %opaque* %x to i32*
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store i32 %c, i32* %d
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ret void
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}
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; don't create new addressspacecasts when we don't know they're safe for the target
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define void @test11([20 x i32] addrspace(1)* nocapture dereferenceable(80) %P) {
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%A = alloca [20 x i32], align 4
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%a = bitcast [20 x i32]* %A to i8*
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%b = bitcast [20 x i32] addrspace(1)* %P to i8 addrspace(1)*
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call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 80, i32 4, i1 false)
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call void @llvm.memcpy.p1i8.p0i8.i64(i8 addrspace(1)* %b, i8* %a, i64 80, i32 4, i1 false)
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ret void
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; CHECK-LABEL: @test11(
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; CHECK-NOT: addrspacecast
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}
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declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
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declare void @llvm.memcpy.p1i8.p0i8.i64(i8 addrspace(1)* nocapture, i8* nocapture, i64, i32, i1) nounwind
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declare void @f1(%struct.big* nocapture sret)
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declare void @f2(%struct.big*)
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; CHECK: attributes [[NUW]] = { nounwind }
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; CHECK: attributes #1 = { argmemonly nounwind }
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; CHECK: attributes #2 = { nounwind ssp }
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; CHECK: attributes #3 = { nounwind ssp uwtable }
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