; REQUIRES: asserts
; RUN: llc -mtriple=arm64-unknown-linux-gnu -debug-only=tailduplication %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=LINUX
; RUN: llc -mtriple=arm64-apple-darwin -debug-only=tailduplication %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=DARWIN
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
@g = common local_unnamed_addr global i32 0, align 4
@f = common local_unnamed_addr global i32 0, align 4
@a = common local_unnamed_addr global i32 0, align 4
@m = common local_unnamed_addr global i32 0, align 4
@l = common local_unnamed_addr global i32 0, align 4
@j = common local_unnamed_addr global i32 0, align 4
@k = common local_unnamed_addr global i32 0, align 4
@i = common local_unnamed_addr global i32 0, align 4
@d = common local_unnamed_addr global i32 0, align 4
@c = common local_unnamed_addr global i32 0, align 4
@e = common local_unnamed_addr global i32 0, align 4
@h = common local_unnamed_addr global i32 0, align 4
; Function Attrs: norecurse nounwind uwtable
define void @n(i32 %o, ptr nocapture readonly %b) local_unnamed_addr #0 {
entry:
%0 = load i32, ptr @g, align 4, !tbaa !2
%tobool = icmp eq i32 %0, 0
br i1 %tobool, label %entry.if.end_crit_edge, label %if.then
entry.if.end_crit_edge: ; preds = %entry
%.pre = load i32, ptr @f, align 4, !tbaa !2
br label %if.end
if.then: ; preds = %entry
store i32 0, ptr @f, align 4, !tbaa !2
br label %if.end
; DARWIN: Merging into block
; LINUX: Merging into block
if.end: ; preds = %entry.if.end_crit_edge, %if.then
%1 = phi i32 [ %.pre, %entry.if.end_crit_edge ], [ 0, %if.then ]
%cmp6 = icmp slt i32 %1, %o
br i1 %cmp6, label %for.body.lr.ph, label %for.end
for.body.lr.ph: ; preds = %if.end
%.pre7 = load i32, ptr @a, align 4, !tbaa !2
%.pre8 = load i32, ptr @l, align 4, !tbaa !2
%.pre9 = load i32, ptr @j, align 4, !tbaa !2
%.pre10 = load i32, ptr @k, align 4, !tbaa !2
%.pre11 = load i32, ptr @i, align 4, !tbaa !2
br label %for.body
for.body: ; preds = %if.end5, %for.body.lr.ph
%2 = phi i32 [ %.pre11, %for.body.lr.ph ], [ %7, %if.end5 ]
%3 = phi i32 [ %.pre10, %for.body.lr.ph ], [ %8, %if.end5 ]
%4 = phi i32 [ %.pre9, %for.body.lr.ph ], [ %9, %if.end5 ]
%5 = phi i32 [ %1, %for.body.lr.ph ], [ %inc, %if.end5 ]
store i32 %.pre7, ptr @m, align 4, !tbaa !2
%mul = mul nsw i32 %3, %4
%cmp1 = icmp sgt i32 %.pre8, %mul
%conv = zext i1 %cmp1 to i32
%cmp2 = icmp slt i32 %2, %conv
br i1 %cmp2, label %if.then4, label %if.end5
if.then4: ; preds = %for.body
%6 = load i32, ptr @d, align 4, !tbaa !2
store i32 %6, ptr @k, align 4, !tbaa !2
store i32 %6, ptr @i, align 4, !tbaa !2
store i32 %6, ptr @j, align 4, !tbaa !2
br label %if.end5
if.end5: ; preds = %if.then4, %for.body
%7 = phi i32 [ %6, %if.then4 ], [ %2, %for.body ]
%8 = phi i32 [ %6, %if.then4 ], [ %3, %for.body ]
%9 = phi i32 [ %6, %if.then4 ], [ %4, %for.body ]
%10 = load i32, ptr @c, align 4, !tbaa !2
%idxprom = sext i32 %10 to i64
%arrayidx = getelementptr inbounds i32, ptr %b, i64 %idxprom
%11 = load i32, ptr %arrayidx, align 4, !tbaa !2
%12 = load i32, ptr @e, align 4, !tbaa !2
%sub = sub nsw i32 %11, %12
store i32 %sub, ptr @h, align 4, !tbaa !2
%inc = add nsw i32 %5, 1
store i32 %inc, ptr @f, align 4, !tbaa !2
%exitcond = icmp eq i32 %inc, %o
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %if.end5, %if.end
ret void
}
attributes #0 = { norecurse nounwind uwtable }
!2 = !{!3, !3, i64 0}
!3 = !{!"int", !4, i64 0}
!4 = !{}
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