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; RUN: llc < %s -O3 -march=x86-64 -mcpu=core2 | FileCheck %s
declare i1 @check() nounwind
declare i1 @foo(i8*, i8*, i8*) nounwind
; Check that redundant phi elimination ran
; CHECK: @test
; CHECK: %while.body.i
; CHECK: movs
; CHECK-NOT: movs
; CHECK: %for.end.i
define i32 @test(i8* %base) nounwind uwtable ssp {
entry:
br label %while.body.lr.ph.i
while.body.lr.ph.i: ; preds = %cond.true.i
br label %while.body.i
while.body.i: ; preds = %cond.true29.i, %while.body.lr.ph.i
%indvars.iv7.i = phi i64 [ 16, %while.body.lr.ph.i ], [ %indvars.iv.next8.i, %cond.true29.i ]
%i.05.i = phi i64 [ 0, %while.body.lr.ph.i ], [ %indvars.iv7.i, %cond.true29.i ]
%sext.i = shl i64 %i.05.i, 32
%idx.ext.i = ashr exact i64 %sext.i, 32
%add.ptr.sum.i = add i64 %idx.ext.i, 16
br label %for.body.i
for.body.i: ; preds = %for.body.i, %while.body.i
%indvars.iv.i = phi i64 [ 0, %while.body.i ], [ %indvars.iv.next.i, %for.body.i ]
%add.ptr.sum = add i64 %add.ptr.sum.i, %indvars.iv.i
%arrayidx22.i = getelementptr inbounds i8* %base, i64 %add.ptr.sum
%0 = load i8* %arrayidx22.i, align 1
%indvars.iv.next.i = add i64 %indvars.iv.i, 1
%cmp = call i1 @check() nounwind
br i1 %cmp, label %for.end.i, label %for.body.i
for.end.i: ; preds = %for.body.i
%add.ptr.i144 = getelementptr inbounds i8* %base, i64 %add.ptr.sum.i
%cmp2 = tail call i1 @foo(i8* %add.ptr.i144, i8* %add.ptr.i144, i8* undef) nounwind
br i1 %cmp2, label %cond.true29.i, label %cond.false35.i
cond.true29.i: ; preds = %for.end.i
%indvars.iv.next8.i = add i64 %indvars.iv7.i, 16
br i1 false, label %exit, label %while.body.i
cond.false35.i: ; preds = %for.end.i
unreachable
exit: ; preds = %cond.true29.i, %cond.true.i
ret i32 0
}
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