forked from OSchip/llvm-project
30 lines
1.4 KiB
LLVM
30 lines
1.4 KiB
LLVM
|
; RUN: opt -memcpyopt -S < %s | FileCheck %s
|
||
|
|
; RUN: opt -passes=memcpyopt -S < %s | FileCheck %s
|
||
|
|
; rdar://8875553
|
||
|
|
|
||
|
|
; Memcpyopt shouldn't optimize the second memcpy using the first
|
||
|
|
; because the first has a smaller size.
|
||
|
|
|
||
|
|
; 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)
|
||
|
|
|
||
|
|
target datalayout = "e-p:32:32:32"
|
||
|
|
|
||
|
|
%struct.s = type { [11 x i8], i32 }
|
||
|
|
|
||
|
|
@.str = private constant [11 x i8] c"0123456789\00"
|
||
|
|
@cell = external global %struct.s
|
||
|
|
|
||
|
|
declare void @check(%struct.s* byval %p) nounwind
|
||
|
|
declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind
|
||
|
|
|
||
|
|
define void @foo() nounwind {
|
||
|
|
entry:
|
||
|
|
%agg.tmp = alloca %struct.s, align 4
|
||
|
|
store i32 99, i32* getelementptr inbounds (%struct.s, %struct.s* @cell, i32 0, i32 1), align 4
|
||
|
|
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)
|
||
|
|
%tmp = getelementptr inbounds %struct.s, %struct.s* %agg.tmp, i32 0, i32 0, i32 0
|
||
|
|
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)
|
||
|
|
call void @check(%struct.s* byval %agg.tmp)
|
||
|
|
ret void
|
||
|
|
}
|