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* %tmp, i8* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i32 16, i32 4, i1 false) 9 10 target 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 17 declare void @check(%struct.s* byval %p) nounwind 18 declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind 19 20 define void @foo() nounwind { 21 entry: 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* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i8* getelementptr inbounds ([11 x i8], [11 x i8]* @.str, i32 0, i32 0), i32 11, i32 1, 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* %tmp, i8* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 0, i32 0), i32 16, i32 4, i1 false) 27 call void @check(%struct.s* byval %agg.tmp) 28 ret void 29 } 30
