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1; RUN: llc -mtriple=x86_64-apple-darwin < %s| FileCheck %s2 3; A bug in DAGCombiner prevented it forming a zextload in this simple case4; because it counted both the chain user and the real user against the5; profitability total.6 7define void @load_zext(ptr nocapture %p){8entry:9 %0 = load i32, ptr %p, align 410 %and = and i32 %0, 25511 tail call void @use(i32 %and)12 ret void13; CHECK: movzbl ({{%r[a-z]+}}), {{%e[a-z]+}}14}15 16declare void @use(i32)17