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17 lines
605 B
LLVM
17 lines
605 B
LLVM
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; RUN: llc < %s -mtriple=thumbv7-apple-ios | FileCheck %s
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; rdar://11035895
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; DAG combine incorrectly optimize (i32 vextract (v4i16 load $addr), c) to
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; (i16 load $addr+c*sizeof(i16)). It should have issued an extload instead. i.e.
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; (i32 extload $addr+c*sizeof(i16)
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define void @test_hi_short3(<3 x i16> * nocapture %srcA, <2 x i16> * nocapture %dst) nounwind {
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entry:
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; CHECK: ldrh [[REG:r[0-9]+]]
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; CHECK: strh [[REG]]
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%0 = load <3 x i16> * %srcA, align 8
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%1 = shufflevector <3 x i16> %0, <3 x i16> undef, <2 x i32> <i32 2, i32 undef>
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store <2 x i16> %1, <2 x i16> * %dst, align 4
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ret void
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}
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