1; RUN: opt -memcpyopt -S < %s | FileCheck %s 2; RUN: opt -passes=memcpyopt -S < %s | FileCheck %s 3; rdar://8875553 4 5; Memcpyopt shouldn't optimize the second memcpy using the first 6; because the first has a smaller size. 7 8; CHECK: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %tmp, i8* align 4 getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i32 16, i1 false) 9 10target datalayout = "e-p:32:32:32" 11 12%struct.s = type { [11 x i8], i32 } 13 14@.str = private constant [11 x i8] c"0123456789\00" 15@cell = external global %struct.s 16 17declare void @check(%struct.s* byval %p) nounwind 18declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind 19 20define void @foo() nounwind { 21entry: 22 %agg.tmp = alloca %struct.s, align 4 23 store i32 99, i32* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 1), align 4 24 call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i8* align 1 getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i32 11, i1 false) 25 %tmp = getelementptr inbounds %struct.s, %struct.s* %agg.tmp, i32 0, i32 0, i32 0 26 call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 4 %tmp, i8* align 4 getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i32 16, i1 false) 27 call void @check(%struct.s* byval %agg.tmp) 28 ret void 29} 30