| ; RUN: llc -march=x86-64 -mcpu=core2 -enable-misched -misched=shuffle -misched-bottomup < %s |
| ; REQUIRES: asserts |
| ; |
| ; Interesting MachineScheduler cases. |
| ; |
| ; FIXME: There should be an assert in the coalescer that we're not rematting |
| ; "not-quite-dead" copies, but that breaks a lot of tests <rdar://problem/11148682>. |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind |
| |
| ; From oggenc. |
| ; After coalescing, we have a dead superreg (RAX) definition. |
| ; |
| ; CHECK: xorl %esi, %esi |
| ; CHECK: movl $32, %ecx |
| ; CHECK: rep;movsl |
| define fastcc void @_preextrapolate_helper() nounwind uwtable ssp { |
| entry: |
| br i1 undef, label %for.cond.preheader, label %if.end |
| |
| for.cond.preheader: ; preds = %entry |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* undef, i8* null, i64 128, i32 4, i1 false) nounwind |
| unreachable |
| |
| if.end: ; preds = %entry |
| ret void |
| } |
