Imported Upstream version 5.18.0.246

Former-commit-id: 0c7ce5b1a7851e13f22acfd379b7f9fb304e4833
This commit is contained in:
Xamarin Public Jenkins (auto-signing)
2019-01-23 08:21:40 +00:00
parent a7724cd563
commit 279aa8f685
28482 changed files with 3866972 additions and 44 deletions

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; RUN: opt < %s -loop-rotate -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
; Ensure that "llvm.loop.vectorize.enable" metadata was not lost after loop-rotate.
; In past LoopRotate was clearing that metadata.
;
; See http://reviews.llvm.org/D3348 for details.
; CHECK-LABEL: @foo
; CHECK: loop_cond:
; CHECK-NOT: loop-inc
; CHECK: br i1 %cmp, label %return, label %loop_cond, !llvm.loop !0
; CHECK: !0 = distinct !{!0, !1}
; CHECK: !1 = !{!"llvm.loop.vectorize.enable", i1 true}
define i32 @foo(i32 %a) {
entry:
br label %loop_cond
loop_cond:
%indx = phi i32 [ 1, %entry ], [ %inc, %loop_inc ]
%cmp = icmp ne i32 %indx, %a
br i1 %cmp, label %return, label %loop_inc
loop_inc:
%inc = add i32 %indx, 1
br label %loop_cond, !llvm.loop !0
return:
ret i32 0
}
!0 = !{!0, !1}
!1 = !{!"llvm.loop.vectorize.enable", i1 true}