bf9fe79397
Summary: LoopSimplifyCFG should update ScEv for all loops after a block is deleted. If the deleted block "Succ" is part of L, then it is part of all parent loops, so forget topmost loop. Reviewers: greened, mkazantsev, sanjoy Subscribers: jlebar, javed.absar, uabelho, llvm-commits Differential Revision: https://reviews.llvm.org/D50422 llvm-svn: 339363
26 lines
716 B
LLVM
26 lines
716 B
LLVM
; RUN: opt -S -indvars -loop-idiom -verify -loop-simplifycfg -loop-idiom < %s | FileCheck %s
|
|
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
; CHECK-LABEL: @f1()
|
|
; CHECK-NEXT: entry:
|
|
define void @f1() {
|
|
entry:
|
|
br label %lbl1
|
|
|
|
lbl1: ; preds = %if.end, %entry
|
|
br label %for
|
|
|
|
for: ; preds = %if.end, %lbl1
|
|
br label %lor.end
|
|
|
|
lor.end: ; preds = %for
|
|
br i1 undef, label %for.end, label %if.end
|
|
|
|
if.end: ; preds = %lor.end
|
|
br i1 undef, label %lbl1, label %for
|
|
|
|
for.end: ; preds = %lor.end
|
|
ret void
|
|
}
|