; RUN: opt -passes=loop-unroll-and-jam -allow-unroll-and-jam -verify-loop-info < %s -S | FileCheck %s
; RUN: opt -passes='loop(loop-unroll-and-jam),verify<loops>' -allow-unroll-and-jam < %s -S | FileCheck %s
; Check that the newly created loops to not fail to be added to LI
; This test deliberately disables UnJ on the middle loop, performing it instead on the
; outer of 3 nested loops. The (new) inner loops need to be added to LI.
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
define i32 @test() {
; CHECK-LABEL: test
; CHECK: for.cond17.preheader:
; CHECK: br label %for.cond20.preheader
; CHECK: for.cond20.preheader:
; CHECK: br label %for.cond23.preheader
; CHECK: for.cond23.preheader:
; CHECK: br label %for.body25
; CHECK: for.body25:
; CHECK: br i1 [[CMP24:%.*]], label %for.body25, label %for.inc45
; CHECK: for.inc45:
; CHECK: br label %for.body25.1
; CHECK: for.inc48:
; CHECK: br i1 [[CMP18_3:%.*]], label %for.cond20.preheader, label %for.end50
; CHECK: for.end50:
; CHECK: ret i32 0
; CHECK: for.body25.1:
; CHECK: br i1 [[CMP24_1:%.*]], label %for.body25.1, label %for.inc45.1
; CHECK: for.inc45.1:
; CHECK: br label %for.body25.2
; CHECK: for.body25.2:
; CHECK: br i1 [[CMP24_2:%.*]], label %for.body25.2, label %for.inc45.2
; CHECK: for.inc45.2:
; CHECK: br label %for.body25.3
; CHECK: for.body25.3:
; CHECK: br i1 [[CMP24_3:%.*]], label %for.body25.3, label %for.inc45.3
; CHECK: for.inc45.3:
; CHECK: br i1 [[CMP21_3:%.*]], label %for.cond23.preheader, label %for.inc48
;
entry:
%A = alloca [8 x [8 x i32]], align 16
%B = alloca [8 x [8 x i32]], align 16
%C = alloca [8 x [8 x i32]], align 16
br label %for.cond17.preheader
for.cond17.preheader: ; preds = %for.inc14
br label %for.cond20.preheader
for.cond20.preheader: ; preds = %for.cond17.preheader, %for.inc48
%i.13 = phi i32 [ 0, %for.cond17.preheader ], [ %inc49, %for.inc48 ]
br label %for.cond23.preheader
for.cond23.preheader: ; preds = %for.cond20.preheader, %for.inc45
%j.12 = phi i32 [ 0, %for.cond20.preheader ], [ %inc46, %for.inc45 ]
br label %for.body25
for.body25: ; preds = %for.cond23.preheader, %for.body25
%k.01 = phi i32 [ 0, %for.cond23.preheader ], [ %inc43, %for.body25 ]
%idxprom26 = zext i32 %i.13 to i64
%idxprom28 = zext i32 %j.12 to i64
%arrayidx29 = getelementptr inbounds [8 x [8 x i32]], ptr %C, i64 0, i64 %idxprom26, i64 %idxprom28
%0 = load i32, ptr %arrayidx29, align 4
%idxprom30 = zext i32 %i.13 to i64
%idxprom32 = zext i32 %k.01 to i64
%arrayidx33 = getelementptr inbounds [8 x [8 x i32]], ptr %A, i64 0, i64 %idxprom30, i64 %idxprom32
%1 = load i32, ptr %arrayidx33, align 4
%idxprom34 = zext i32 %k.01 to i64
%idxprom36 = zext i32 %j.12 to i64
%arrayidx37 = getelementptr inbounds [8 x [8 x i32]], ptr %B, i64 0, i64 %idxprom34, i64 %idxprom36
%2 = load i32, ptr %arrayidx37, align 4
%mul = mul nsw i32 %1, %2
%add = add nsw i32 %0, %mul
%idxprom38 = zext i32 %i.13 to i64
%idxprom40 = zext i32 %j.12 to i64
%arrayidx41 = getelementptr inbounds [8 x [8 x i32]], ptr %C, i64 0, i64 %idxprom38, i64 %idxprom40
store i32 %add, ptr %arrayidx41, align 4
%inc43 = add nuw nsw i32 %k.01, 1
%cmp24 = icmp ult i32 %k.01, 7
br i1 %cmp24, label %for.body25, label %for.inc45
for.inc45: ; preds = %for.body25
%inc46 = add nuw nsw i32 %j.12, 1
%cmp21 = icmp ult i32 %j.12, 7
br i1 %cmp21, label %for.cond23.preheader, label %for.inc48, !llvm.loop !7
for.inc48: ; preds = %for.inc45
%inc49 = add nuw nsw i32 %i.13, 1
%cmp18 = icmp ult i32 %i.13, 7
br i1 %cmp18, label %for.cond20.preheader, label %for.end50, !llvm.loop !5
for.end50: ; preds = %for.inc48
ret i32 0
}
!5 = distinct !{!5, !6}
!6 = !{!"llvm.loop.unroll_and_jam.count", i32 4}
!7 = distinct !{!7, !8}
!8 = !{!"llvm.loop.unroll_and_jam.disable"}
Codebase Browser
llvm