llvm-6502/test/CodeGen/X86/extractelement-load.ll
Evan Cheng 77f0b7a50a Instead of a vector load, shuffle and then extract an element. Load the element from address with an offset.
pshufd $1, (%rdi), %xmm0
        movd %xmm0, %eax
=>
        movl 4(%rdi), %eax


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51026 91177308-0d34-0410-b5e6-96231b3b80d8
2008-05-13 08:35:03 +00:00

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428 B
LLVM

; RUN: llvm-as %s -o - | llc -march=x86 -mattr=+sse2 -mcpu=yonah | not grep movd
; RUN: llvm-as %s -o - | llc -march=x86-64 -mattr=+sse2 -mcpu=yonah | not grep movd
define i32 @t(<2 x i64>* %val) nounwind {
%tmp2 = load <2 x i64>* %val, align 16 ; <<2 x i64>> [#uses=1]
%tmp3 = bitcast <2 x i64> %tmp2 to <4 x i32> ; <<4 x i32>> [#uses=1]
%tmp4 = extractelement <4 x i32> %tmp3, i32 2 ; <i32> [#uses=1]
ret i32 %tmp4
}