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47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; RUN: llc -O3 < %s | FileCheck %s
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; RUN: llc -O3 -addr-sink-using-gep=1 < %s | FileCheck %s
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; Test case for a DAG combiner bug where we combined an indexed load
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; with an extension (sext, zext, or any) into a regular extended load,
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; i.e., dropping the indexed value.
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; <rdar://problem/16389332>
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target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
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target triple = "arm64-apple-ios"
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%class.A = type { i64, i64 }
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%class.C = type { i64 }
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; CHECK-LABEL: XX:
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; CHECK: ldr
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define i32 @XX(%class.A* %K, i1 %tst, i32* %addr, %class.C** %ppC, %class.C* %pC) {
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entry:
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br i1 %tst, label %if.then, label %lor.rhs.i
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lor.rhs.i: ; preds = %entry
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%tmp = load i32* %addr, align 4
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%y.i.i.i = getelementptr inbounds %class.A* %K, i64 0, i32 1
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%tmp1 = load i64* %y.i.i.i, align 8
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%U.sroa.3.8.extract.trunc.i = trunc i64 %tmp1 to i32
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%div11.i = sdiv i32 %U.sroa.3.8.extract.trunc.i, 17
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%add12.i = add nsw i32 0, %div11.i
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%U.sroa.3.12.extract.shift.i = lshr i64 %tmp1, 32
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%U.sroa.3.12.extract.trunc.i = trunc i64 %U.sroa.3.12.extract.shift.i to i32
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%div15.i = sdiv i32 %U.sroa.3.12.extract.trunc.i, 13
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%add16.i = add nsw i32 %add12.i, %div15.i
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%rem.i.i = srem i32 %add16.i, %tmp
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%idxprom = sext i32 %rem.i.i to i64
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%arrayidx = getelementptr inbounds %class.C** %ppC, i64 %idxprom
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%tobool533 = icmp eq %class.C* %pC, null
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br i1 %tobool533, label %while.end, label %while.body
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if.then: ; preds = %entry
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ret i32 42
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while.body: ; preds = %lor.rhs.i
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ret i32 5
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while.end: ; preds = %lor.rhs.i
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%tmp3 = load %class.C** %arrayidx, align 8
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ret i32 50
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}
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