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afc36a9520
of returning a list of pointers to Values that are deleted. This was unsafe, because the pointers in the list are, by nature of what RecursivelyDeleteDeadInstructions does, always dangling. Replace this with a simple callback mechanism. This may eventually be removed if all clients can reasonably be expected to use CallbackVH. Use this to factor out the dead-phi-cycle-elimination code from LSR utility function, and generalize it to use the RecursivelyDeleteTriviallyDeadInstructions utility function. This makes LSR more aggressive about eliminating dead PHI cycles; adjust tests to either be less trivial or to simply expect fewer instructions. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70636 91177308-0d34-0410-b5e6-96231b3b80d8
26 lines
1.2 KiB
LLVM
26 lines
1.2 KiB
LLVM
; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx | grep pxor
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; RUN: llvm-as < %s | llc -march=x86-64 -mattr=+mmx | grep punpckldq
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%struct.vS1024 = type { [8 x <4 x i32>] }
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%struct.vS512 = type { [4 x <4 x i32>] }
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declare <1 x i64> @llvm.x86.mmx.psrli.q(<1 x i64>, i32) nounwind readnone
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define void @t() nounwind {
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entry:
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br label %bb554
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bb554: ; preds = %bb554, %entry
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%sum.0.reg2mem.0 = phi <1 x i64> [ %tmp562, %bb554 ], [ zeroinitializer, %entry ] ; <<1 x i64>> [#uses=1]
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%0 = load <1 x i64>* null, align 8 ; <<1 x i64>> [#uses=2]
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%1 = bitcast <1 x i64> %0 to <2 x i32> ; <<2 x i32>> [#uses=1]
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%tmp555 = and <2 x i32> %1, < i32 -1, i32 0 > ; <<2 x i32>> [#uses=1]
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%2 = bitcast <2 x i32> %tmp555 to <1 x i64> ; <<1 x i64>> [#uses=1]
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%3 = call <1 x i64> @llvm.x86.mmx.psrli.q(<1 x i64> %0, i32 32) nounwind readnone ; <<1 x i64>> [#uses=1]
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store <1 x i64> %sum.0.reg2mem.0, <1 x i64>* null
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%tmp558 = add <1 x i64> %sum.0.reg2mem.0, %2 ; <<1 x i64>> [#uses=1]
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%4 = call <1 x i64> @llvm.x86.mmx.psrli.q(<1 x i64> %tmp558, i32 32) nounwind readnone ; <<1 x i64>> [#uses=1]
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%tmp562 = add <1 x i64> %4, %3 ; <<1 x i64>> [#uses=1]
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br label %bb554
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}
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