1db2551cc1
It is confusing to have two ways of specifying the same pass
('simple-loop-unswitch' and 'unswitch'). This patch replaces
'unswitch' by 'simple-loop-unswitch' to get a unique identifier.
Using 'simple-loop-unswitch' instead of 'unswitch' also has the
advantage of matching how the pass is named in DEBUG_TYPE etc. So
this makes it a bit more consistent how we refer to the pass in
options such as -passes, -print-after and -debug-only.
Reviewed By: aeubanks
Differential Revision: https://reviews.llvm.org/D105628
47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; RUN: opt -loop-unswitch -loop-reduce -loop-simplifycfg -verify-memoryssa -S %s | FileCheck %s
|
|
|
|
; TODO: also run with NPM, but currently LSR does not preserve LCSSA, causing a verification failure on the test.
|
|
; opt -passes='loop-mssa(simple-loop-unswitch<nontrivial>,loop-reduce,simplifycfg)' -verify-memoryssa -S %s | FileCheck %s
|
|
|
|
; Test case for PR47557.
|
|
|
|
; REQUIRES: x86-registered-target
|
|
|
|
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@a = external global i32, align 4
|
|
@c = external global [1 x i32], align 4
|
|
|
|
define i32* @test() {
|
|
; CHECK-LABEL: @test
|
|
;
|
|
entry: ; preds = %entry
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %cleanup, %entry
|
|
%storemerge = phi i64 [ 0, %entry ], [ %inc7, %cleanup ]
|
|
br label %for.cond2.1
|
|
|
|
for.body3: ; preds = %for.cond2.2, %for.cond2.1
|
|
%arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* @c, i64 0, i64 %storemerge
|
|
ret i32* %arrayidx
|
|
|
|
cleanup: ; preds = %for.end5, %if.then
|
|
%inc7 = add nsw i64 %storemerge, 1
|
|
br label %for.cond
|
|
|
|
for.cond2.1: ; preds = %for.cond
|
|
br i1 true, label %for.inc.1, label %for.body3
|
|
|
|
for.inc.1: ; preds = %for.end.1
|
|
br i1 false, label %for.body.2, label %cleanup
|
|
|
|
for.body.2: ; preds = %for.inc.1
|
|
store i32 0, i32* @a, align 4
|
|
br label %for.cond2.2
|
|
|
|
for.cond2.2: ; preds = %for.body.2
|
|
br i1 true, label %cleanup, label %for.body3
|
|
}
|