mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
beb1a39bc6
This change makes it possible for tail-duplication and tail-merging to be disjoint. By being less aggressive when merging during layout, there are no overlapping cases between tail-duplication and tail-merging, provided the thresholds are disjoint. There is a remaining TODO to benchmark the succ_size() test for non-layout tail merging. llvm-svn: 278265
55 lines
1.6 KiB
LLVM
55 lines
1.6 KiB
LLVM
; 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], %struct.r*, double }
|
|
%struct.r = type opaque
|
|
|
|
define %union.t* @foo(%union.t* %chain) nounwind readonly {
|
|
entry:
|
|
%tobool = icmp eq %union.t* %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 %union.t* [ %0, %while.cond ], [ %chain, %while.cond.preheader ]
|
|
%chain1 = bitcast %union.t* %chain.addr.0 to %union.t**
|
|
%0 = load %union.t*, %union.t** %chain1, align 4, !tbaa !0
|
|
%tobool2 = icmp eq %union.t* %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 %union.t* [ null, %entry ], [ %chain.addr.0, %if.end.loopexit ]
|
|
ret %union.t* %chain.addr.1
|
|
}
|
|
|
|
!0 = !{!"any pointer", !1}
|
|
!1 = !{!"omnipotent char", !2}
|
|
!2 = !{!"Simple C/C++ TBAA"}
|