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[DAGCombiner] Use getVectorElementCount inside visitINSERT_SUBVECTOR
This avoids TypeSize-/ElementCount-related warnings. Differential Revision: https://reviews.llvm.org/D92747
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Joe Ellis
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Jan 11, 2021
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; RUN: llc < %s -o /dev/null 2>&1 | FileCheck --allow-empty %s | ||
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; This regression test is defending against a ElementCount warning 'Possible incorrect use of | ||
; EVT::getVectorNumElements() for scalable vector'. This warning appeared in | ||
; DAGCombiner::visitINSERT_SUBVECTOR because of the use of getVectorNumElements() on scalable | ||
; types. | ||
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; If this check fails please read test/CodeGen/AArch64/README for instructions on how to resolve it. | ||
; CHECK-NOT: warning: | ||
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target triple = "aarch64-unknown-linux-gnu" | ||
attributes #0 = {"target-features"="+sve"} | ||
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declare <16 x float> @llvm.experimental.vector.extract.v16f32.nxv4f32(<vscale x 4 x float>, i64) | ||
declare <vscale x 2 x double> @llvm.experimental.vector.insert.nxv2f64.v8f64(<vscale x 2 x double>, <8 x double>, i64) | ||
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define <vscale x 2 x double> @reproducer_one(<vscale x 4 x float> %vec_a) #0 { | ||
%a = call <16 x float> @llvm.experimental.vector.extract.v16f32.nxv4f32(<vscale x 4 x float> %vec_a, i64 0) | ||
%b = bitcast <16 x float> %a to <8 x double> | ||
%retval = call <vscale x 2 x double> @llvm.experimental.vector.insert.nxv2f64.v8f64(<vscale x 2 x double> undef, <8 x double> %b, i64 0) | ||
ret <vscale x 2 x double> %retval | ||
} | ||
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define <vscale x 2 x double> @reproducer_two(<4 x double> %a, <4 x double> %b) #0 { | ||
%concat = shufflevector <4 x double> %a, <4 x double> %b, <8 x i32> <i32 4, i32 5, i32 6, i32 7, i32 0, i32 1, i32 2, i32 3> | ||
%retval = call <vscale x 2 x double> @llvm.experimental.vector.insert.nxv2f64.v8f64(<vscale x 2 x double> undef, <8 x double> %concat, i64 0) | ||
ret <vscale x 2 x double> %retval | ||
} |