Files
Alina Sbirlea b68c01e0d7 [MemorySSA] Fix phi insertion when inserting a def.
Summary:
When inserting a Def, the current algorithm is walking edges backward
and inserting new Phis where needed. There may be additional Phis needed
in the IDF of the newly inserted Def and Phis.
Adding Phis in the IDF of the Def was added ina  previous patch, but we
may also need other Phis in the IDF of the newly added Phis.

Reviewers: george.burgess.iv

Subscribers: Prazek, sanjoy.google, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67637

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@372138 91177308-0d34-0410-b5e6-96231b3b80d8
2019-09-17 16:33:35 +00:00

34 lines
1.0 KiB
LLVM

; RUN: opt -licm -enable-mssa-loop-dependency -verify-memoryssa -S < %s | FileCheck %s
; REQUIRES: asserts
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-none-eabi"
; CHECK-LABEL: @e()
define void @e() {
entry:
br label %g
g: ; preds = %cleanup, %entry
%0 = load i32, i32* null, align 4
%and = and i32 %0, undef
store i32 %and, i32* null, align 4
br i1 undef, label %if.end8, label %if.then
if.then: ; preds = %g
br i1 undef, label %k, label %cleanup
k: ; preds = %if.end8, %if.then
br i1 undef, label %if.end8, label %cleanup
if.end8: ; preds = %k, %g
br i1 undef, label %for.cond.preheader, label %k
for.cond.preheader: ; preds = %if.end8
unreachable
cleanup: ; preds = %k, %if.then
br label %g
}