1; RUN: llc --mtriple=powerpc64le-linux-gnu < %s | FileCheck %s 2 3; It tests in function DAGCombiner::visitSIGN_EXTEND_INREG 4; signext will not be combined with extload, and causes extra zext. 5 6declare void @g(i32 signext) 7 8define void @foo(i8* %p) { 9entry: 10 br label %while.body 11 12while.body: 13 %0 = load i8, i8* %p, align 1 14 %conv = zext i8 %0 to i32 15 %cmp = icmp sgt i8 %0, 0 16 br i1 %cmp, label %if.then, label %while.body 17; CHECK: lbz 18; CHECK: extsb. 19; CHECK-NOT: rlwinm 20; CHECK: ble 21 22if.then: 23 tail call void @g(i32 signext %conv) 24 br label %while.body 25} 26 27