| ; RUN: llc -march=hexagon < %s | FileCheck %s |
| ; |
| ; 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 { |
| 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 |
| } |
| |
| !0 = !{!"any pointer", !1} |
| !1 = !{!"omnipotent char", !2} |
| !2 = !{!"Simple C/C++ TBAA"} |
