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Testcase for PR2585.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55151 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2008-08-21 23:04:49 +00:00
parent d611cf6dcd
commit 403483c200
1 changed files with 21 additions and 0 deletions
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test/CodeGen/X86/vec_shuffle-21.ll Normal file
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; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 -o %t -f
; RUN: grep pshuflw %t | count 1
; RUN: grep pextrw %t | count 2
; RUN: grep pinsrw %t | count 2
; PR2585
; FIXME: This testcase produces icky code. It can be made much better!
external constant <4 x i32> ; <<4 x i32>*>:0 [#uses=1]
external constant <4 x i16> ; <<4 x i16>*>:1 [#uses=1]
define internal void @""() {
load <4 x i32>* @0, align 16 ; <<4 x i32>>:1 [#uses=1]
bitcast <4 x i32> %1 to <8 x i16> ; <<8 x i16>>:2[#uses=1]
shufflevector <8 x i16> %2, <8 x i16> undef, <8 x i32> < i32 0, i32 2, i32 4, i32 6, i32 undef, i32 undef, i32 undef, i32 undef > ; <<8x i16>>:3 [#uses=1]
bitcast <8 x i16> %3 to <2 x i64> ; <<2 x i64>>:4 [#uses=1]
extractelement <2 x i64> %4, i32 0 ; <i64>:5 [#uses=1]
bitcast i64 %5 to <4 x i16> ; <<4 x i16>>:6 [#uses=1]
store <4 x i16> %6, <4 x i16>* @1, align 8
ret void
}