; RUN: llc -march=hexagon -disable-copyprop < %s | FileCheck %s ; Disable MachineCopyPropagation to expose this opportunity to RDF copy. ; ; Check that ; { ; r1 = r0 ; } ; { ; r0 = memw(r1 + #0) ; } ; was copy-propagated to ; { ; r1 = r0 ; r0 = memw(r0 + #0) ; } ; ; CHECK-LABEL: LBB0_1 ; CHECK: [[DST:r[0-9]+]] = [[SRC:r[0-9]+]] ; CHECK-DAG: memw([[SRC]] ; CHECK-NOT: memw([[DST]] ; CHECK: %if.end 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" target triple = "hexagon" %union.t = type { %struct.t, [64 x i8] } %struct.t = type { [12 x i8], ptr, double } %struct.r = type opaque define ptr @foo(ptr %chain) nounwind readonly #0 { entry: %tobool = icmp eq ptr %chain, null br i1 %tobool, label %if.end, label %while.cond.preheader while.cond.preheader: ; preds = %entry br label %while.cond while.cond: ; preds = %while.cond.preheader, %while.cond %chain.addr.0 = phi ptr [ %0, %while.cond ], [ %chain, %while.cond.preheader ] %0 = load ptr, ptr %chain.addr.0, align 4, !tbaa !0 %tobool2 = icmp eq ptr %0, null br i1 %tobool2, label %if.end.loopexit, label %while.cond if.end.loopexit: ; preds = %while.cond br label %if.end if.end: ; preds = %if.end.loopexit, %entry %chain.addr.1 = phi ptr [ null, %entry ], [ %chain.addr.0, %if.end.loopexit ] ret ptr %chain.addr.1 } attributes #0 = { nounwind "target-features"="-packets" } !0 = !{!"any pointer", !1} !1 = !{!"omnipotent char", !2} !2 = !{!"Simple C/C++ TBAA"}