[llvm] [DAG] visitEXTRACT_VECTOR_ELT - constant fold legal fp imm values (PR #74304)

[Phoebe Wang via llvm-commits]

================
@@ -29,8 +29,8 @@ define void @store_64(ptr %ptr) {
 ; X86-LABEL: store_64:
 ; X86:       # %bb.0: # %BB
 ; X86-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X86-NEXT:    xorps %xmm0, %xmm0
-; X86-NEXT:    movlps %xmm0, (%eax)
+; X86-NEXT:    movl $0, 4(%eax)
+; X86-NEXT:    movl $0, (%eax)
----------------
phoebewang wrote:

I wonder whether 2 `movl` is better than one `movlps`

https://github.com/llvm/llvm-project/pull/74304