| ; RUN: opt -basicaa -dse -S < %s | FileCheck %s |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind |
| |
| define void @fn(i8* nocapture %buf) #0 { |
| entry: |
| |
| ; We would not eliminate the first memcpy with data layout, and we should not |
| ; eliminate it without data layout. |
| ; CHECK-LABEL: @fn |
| ; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64 |
| ; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64 |
| ; CHECK: ret void |
| |
| %arrayidx = getelementptr i8, i8* %buf, i64 18 |
| tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %arrayidx, i8* %buf, i64 18, i32 1, i1 false) |
| store i8 1, i8* %arrayidx, align 1 |
| tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %buf, i8* %arrayidx, i64 18, i32 1, i1 false) |
| ret void |
| } |
| |
