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

test/CodeGen/X86/extractelement-from-arg.ll

@@ -1,6 +1,6 @@
-; RUN: llvm-as %s -o - | llc -march=x86-64
+; RUN: llvm-as %s -o - | llc -march=x86-64 -mattr=+sse2
 
-define void @test(float* %R, <4 x float> %X) {
+define void @test(float* %R, <4 x float> %X) nounwind {
 	%tmp = extractelement <4 x float> %X, i32 3
 	store float %tmp, float* %R
 	ret void