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llvm-mirror/test/Analysis/MemorySSA/loop-unswitch.ll
Alina Sbirlea 6d1edda49a [MemorySSA] Pass (for update) MSSAU when hoisting instructions.
Summary: Pass MSSAU to makeLoopInvariant in order to properly update MSSA.

Reviewers: george.burgess.iv

Subscribers: Prazek, sanjoy.google, uabelho, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D67470

llvm-svn: 371748
2019-09-12 17:12:51 +00:00

27 lines
769 B
LLVM

; RUN: opt -S -loop-unswitch -disable-basicaa -enable-mssa-loop-dependency -verify-memoryssa < %s | FileCheck %s
; REQUIRES: asserts
target triple = "x86_64-unknown-linux-gnu"
; CHECK-LABEL: @foo()
; Function Attrs: readnone speculatable
declare i32 @foo() #0
define void @main() {
entry:
br label %for.cond2682
for.cond2682: ; preds = %if.then2712, %entry
%mul2708 = call i32 @foo()
%tobool2709 = icmp ne i32 %mul2708, 0
br i1 %tobool2709, label %if.then2712, label %lor.lhs.false2710
lor.lhs.false2710: ; preds = %for.cond2682
unreachable
if.then2712: ; preds = %for.cond2682
br label %for.cond2682
}
attributes #0 = { readnone speculatable }