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; RUN: llc < %s -march=x86-64 -mcpu=core2 -x86-early-ifcvt -enable-misched \
; RUN: -misched=shuffle -misched-bottomup -verify-machineinstrs \
; RUN: | FileCheck %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
}
; The machine verifier checks that EFLAGS kill flags are updated when
; the scheduler reorders cmovel instructions.
;
; CHECK: test
; CHECK: cmovel
; CHECK: cmovel
; CHECK: call
define void @foo(i32 %b) nounwind uwtable ssp {
entry:
%tobool = icmp ne i32 %b, 0
br i1 %tobool, label %if.then, label %if.end
if.then: ; preds = %entry
br label %if.end
if.end: ; preds = %if.then, %entry
%v1 = phi i32 [1, %entry], [2, %if.then]
%v2 = phi i32 [3, %entry], [4, %if.then]
call void @bar(i32 %v1, i32 %v2)
ret void
}
declare void @bar(i32,i32)
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