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Improve pattern match from v1i8 to v1i32 for AArch64 Neon.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200119 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jiangning Liu
2014-01-26 04:55:53 +00:00
parent e1631e8729
commit da77e83632
2 changed files with 23 additions and 14 deletions
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test/CodeGen/AArch64/neon-scalar-ext.ll
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@@ -29,8 +29,7 @@ define <1 x i16> @test_zext_v1i8_v1i16(<8 x i8> %v) nounwind readnone {
define <1 x i32> @test_zext_v1i8_v1i32(<8 x i8> %v) nounwind readnone {
; CHECK-LABEL: test_zext_v1i8_v1i32:
; CHECK: ushll v0.8h, v0.8b, #0
; CHECK: ushll v0.4s, v0.4h, #0
; CHECK: dup b0, v0.b[0]
%1 = extractelement <8 x i8> %v, i32 0
%2 = insertelement <1 x i8> undef, i8 %1, i32 0
%3 = zext <1 x i8> %2 to <1 x i32>