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In the case of an extractelement on an insertelement value,

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the element indices may be equal if either one is not a
constant.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@63311 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-01-29 16:10:46 +00:00
parent b691b704ad
commit 197e88f796
2 changed files with 30 additions and 1 deletions
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25
test/CodeGen/X86/vec_ins_extract-1.ll Normal file
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@@ -0,0 +1,25 @@
; RUN: llvm-as < %s | llc -march=x86 | grep {(%esp,%eax,4)} | count 4
; Inserts and extracts with variable indices must be lowered
; to memory accesses.
define i32 @t0(i32 inreg %t7, <4 x i32> inreg %t8) nounwind {
%t13 = insertelement <4 x i32> %t8, i32 76, i32 %t7
%t9 = extractelement <4 x i32> %t13, i32 0
ret i32 %t9
}
define i32 @t1(i32 inreg %t7, <4 x i32> inreg %t8) nounwind {
%t13 = insertelement <4 x i32> %t8, i32 76, i32 0
%t9 = extractelement <4 x i32> %t13, i32 %t7
ret i32 %t9
}
define <4 x i32> @t2(i32 inreg %t7, <4 x i32> inreg %t8) nounwind {
%t9 = extractelement <4 x i32> %t8, i32 %t7
%t13 = insertelement <4 x i32> %t8, i32 %t9, i32 0
ret <4 x i32> %t13
}
define <4 x i32> @t3(i32 inreg %t7, <4 x i32> inreg %t8) nounwind {
%t9 = extractelement <4 x i32> %t8, i32 0
%t13 = insertelement <4 x i32> %t8, i32 %t9, i32 %t7
ret <4 x i32> %t13
}