1 ; RUN: llc -O3 < %s | FileCheck %s
2 ; RUN: llc -O3 -addr-sink-using-gep=1 < %s | FileCheck %s
3 ; Test case for a DAG combiner bug where we combined an indexed load
4 ; with an extension (sext, zext, or any) into a regular extended load,
5 ; i.e., dropping the indexed value.
6 ; <rdar://problem/16389332>
8 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
9 target triple = "arm64-apple-ios"
11 %class.A = type { i64, i64 }
12 %class.C = type { i64 }
16 define i32 @XX(%class.A* %K, i1 %tst, i32* %addr, %class.C** %ppC, %class.C* %pC) {
18 br i1 %tst, label %if.then, label %lor.rhs.i
20 lor.rhs.i: ; preds = %entry
21 %tmp = load i32* %addr, align 4
22 %y.i.i.i = getelementptr inbounds %class.A* %K, i64 0, i32 1
23 %tmp1 = load i64* %y.i.i.i, align 8
24 %U.sroa.3.8.extract.trunc.i = trunc i64 %tmp1 to i32
25 %div11.i = sdiv i32 %U.sroa.3.8.extract.trunc.i, 17
26 %add12.i = add nsw i32 0, %div11.i
27 %U.sroa.3.12.extract.shift.i = lshr i64 %tmp1, 32
28 %U.sroa.3.12.extract.trunc.i = trunc i64 %U.sroa.3.12.extract.shift.i to i32
29 %div15.i = sdiv i32 %U.sroa.3.12.extract.trunc.i, 13
30 %add16.i = add nsw i32 %add12.i, %div15.i
31 %rem.i.i = srem i32 %add16.i, %tmp
32 %idxprom = sext i32 %rem.i.i to i64
33 %arrayidx = getelementptr inbounds %class.C** %ppC, i64 %idxprom
34 %tobool533 = icmp eq %class.C* %pC, null
35 br i1 %tobool533, label %while.end, label %while.body
37 if.then: ; preds = %entry
40 while.body: ; preds = %lor.rhs.i
43 while.end: ; preds = %lor.rhs.i
44 %tmp3 = load %class.C** %arrayidx, align 8