1 ; RUN: llc -march=hexagon < %s | FileCheck %s 2 ; 3 ; Check that 4 ; { 5 ; r1 = r0 6 ; } 7 ; { 8 ; r0 = memw(r1 + #0) 9 ; } 10 ; was copy-propagated to 11 ; { 12 ; r1 = r0 13 ; r0 = memw(r0 + #0) 14 ; } 15 ; 16 ; CHECK-LABEL: LBB0_1 17 ; CHECK: [[DST:r[0-9]+]] = [[SRC:r[0-9]+]] 18 ; CHECK-DAG: memw([[SRC]] 19 ; CHECK-NOT: memw([[DST]] 20 ; CHECK-LABEL: LBB0_2 21 22 target datalayout = "e-p:32:32:32-i64:64:64-i32:32:32-i16:16:16-i1:32:32-f64:64:64-f32:32:32-v64:64:64-v32:32:32-a0:0-n16:32" 23 target triple = "hexagon" 24 25 %union.t = type { %struct.t, [64 x i8] } 26 %struct.t = type { [12 x i8], %struct.r*, double } 27 %struct.r = type opaque 28 29 define %union.t* @foo(%union.t* %chain) nounwind readonly { 30 entry: 31 %tobool = icmp eq %union.t* %chain, null 32 br i1 %tobool, label %if.end, label %while.cond.preheader 33 34 while.cond.preheader: ; preds = %entry 35 br label %while.cond 36 37 while.cond: ; preds = %while.cond.preheader, %while.cond 38 %chain.addr.0 = phi %union.t* [ %0, %while.cond ], [ %chain, %while.cond.preheader ] 39 %chain1 = bitcast %union.t* %chain.addr.0 to %union.t** 40 %0 = load %union.t*, %union.t** %chain1, align 4, !tbaa !0 41 %tobool2 = icmp eq %union.t* %0, null 42 br i1 %tobool2, label %if.end.loopexit, label %while.cond 43 44 if.end.loopexit: ; preds = %while.cond 45 br label %if.end 46 47 if.end: ; preds = %if.end.loopexit, %entry 48 %chain.addr.1 = phi %union.t* [ null, %entry ], [ %chain.addr.0, %if.end.loopexit ] 49 ret %union.t* %chain.addr.1 50 } 51 52 !0 = !{!"any pointer", !1} 53 !1 = !{!"omnipotent char", !2} 54 !2 = !{!"Simple C/C++ TBAA"} 55
