mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
cb2262b8e2
LoopInterchange relies on LoopInfo being up-to-date, so we should preserve it after interchanging. This patch updates restructureLoops to move the BBs of the interchanged loops to the right place. Reviewers: davide, efriedma, karthikthecool, mcrosier Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D45278 llvm-svn: 329264
166 lines
5.6 KiB
LLVM
166 lines
5.6 KiB
LLVM
; RUN: opt < %s -loop-interchange -pass-remarks-output=%t -verify-dom-info -verify-loop-info \
|
|
; RUN: -pass-remarks=loop-interchange -pass-remarks-missed=loop-interchange
|
|
; RUN: FileCheck -input-file %t %s
|
|
|
|
;; We test profitability model in these test cases.
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
@A = common global [100 x [100 x i32]] zeroinitializer
|
|
@B = common global [100 x [100 x i32]] zeroinitializer
|
|
|
|
;;---------------------------------------Test case 01---------------------------------
|
|
;; Loops interchange will result in code vectorization and hence profitable. Check for interchange.
|
|
;; for(int i=1;i<100;i++)
|
|
;; for(int j=1;j<100;j++)
|
|
;; A[j][i] = A[j - 1][i] + B[j][i];
|
|
;; FIXME: DA misses this case after D35430
|
|
|
|
; CHECK: Name: Dependence
|
|
; CHECK-NEXT: Function: interchange_01
|
|
define void @interchange_01() {
|
|
entry:
|
|
br label %for2.preheader
|
|
|
|
for2.preheader:
|
|
%i30 = phi i64 [ 1, %entry ], [ %i.next31, %for1.inc14 ]
|
|
br label %for2
|
|
|
|
for2:
|
|
%j = phi i64 [ %i.next, %for2 ], [ 1, %for2.preheader ]
|
|
%j.prev = add nsw i64 %j, -1
|
|
%arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %j.prev, i64 %i30
|
|
%lv1 = load i32, i32* %arrayidx5
|
|
%arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @B, i64 0, i64 %j, i64 %i30
|
|
%lv2 = load i32, i32* %arrayidx9
|
|
%add = add nsw i32 %lv1, %lv2
|
|
%arrayidx13 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %j, i64 %i30
|
|
store i32 %add, i32* %arrayidx13
|
|
%i.next = add nuw nsw i64 %j, 1
|
|
%exitcond = icmp eq i64 %j, 99
|
|
br i1 %exitcond, label %for1.inc14, label %for2
|
|
|
|
for1.inc14:
|
|
%i.next31 = add nuw nsw i64 %i30, 1
|
|
%exitcond33 = icmp eq i64 %i30, 99
|
|
br i1 %exitcond33, label %for.end16, label %for2.preheader
|
|
|
|
for.end16:
|
|
ret void
|
|
}
|
|
|
|
;; ---------------------------------------Test case 02---------------------------------
|
|
;; Check loop interchange profitability model.
|
|
;; This tests profitability model when operands of getelementpointer and not exactly the induction variable but some
|
|
;; arithmetic operation on them.
|
|
;; for(int i=1;i<N;i++)
|
|
;; for(int j=1;j<N;j++)
|
|
;; A[j-1][i-1] = A[j - 1][i-1] + B[j-1][i-1];
|
|
|
|
; CHECK: Name: Interchanged
|
|
; CHECK-NEXT: Function: interchange_02
|
|
define void @interchange_02() {
|
|
entry:
|
|
br label %for1.header
|
|
|
|
for1.header:
|
|
%i35 = phi i64 [ 1, %entry ], [ %i.next36, %for1.inc19 ]
|
|
%i.prev = add nsw i64 %i35, -1
|
|
br label %for2
|
|
|
|
for2:
|
|
%j = phi i64 [ 1, %for1.header ], [ %i.next, %for2 ]
|
|
%j.prev = add nsw i64 %j, -1
|
|
%arrayidx6 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %j.prev, i64 %i.prev
|
|
%lv1 = load i32, i32* %arrayidx6
|
|
%arrayidx12 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @B, i64 0, i64 %j.prev, i64 %i.prev
|
|
%lv2 = load i32, i32* %arrayidx12
|
|
%add = add nsw i32 %lv1, %lv2
|
|
store i32 %add, i32* %arrayidx6
|
|
%i.next = add nuw nsw i64 %j, 1
|
|
%exitcond = icmp eq i64 %j, 99
|
|
br i1 %exitcond, label %for1.inc19, label %for2
|
|
|
|
for1.inc19:
|
|
%i.next36 = add nuw nsw i64 %i35, 1
|
|
%exitcond39 = icmp eq i64 %i35, 99
|
|
br i1 %exitcond39, label %for.end21, label %for1.header
|
|
|
|
for.end21:
|
|
ret void
|
|
}
|
|
|
|
;;---------------------------------------Test case 03---------------------------------
|
|
;; Loops interchange is not profitable.
|
|
;; for(int i=1;i<100;i++)
|
|
;; for(int j=1;j<100;j++)
|
|
;; A[i-1][j-1] = A[i - 1][j-1] + B[i][j];
|
|
|
|
; CHECK: Name: InterchangeNotProfitable
|
|
; CHECK-ENXT: Function: interchange_03
|
|
define void @interchange_03(){
|
|
entry:
|
|
br label %for1.header
|
|
|
|
for1.header:
|
|
%i34 = phi i64 [ 1, %entry ], [ %i.next35, %for1.inc17 ]
|
|
%i.prev = add nsw i64 %i34, -1
|
|
br label %for2
|
|
|
|
for2:
|
|
%j = phi i64 [ 1, %for1.header ], [ %i.next, %for2 ]
|
|
%j.prev = add nsw i64 %j, -1
|
|
%arrayidx6 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %i.prev, i64 %j.prev
|
|
%lv1 = load i32, i32* %arrayidx6
|
|
%arrayidx10 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @B, i64 0, i64 %i34, i64 %j
|
|
%lv2 = load i32, i32* %arrayidx10
|
|
%add = add nsw i32 %lv1, %lv2
|
|
store i32 %add, i32* %arrayidx6
|
|
%i.next = add nuw nsw i64 %j, 1
|
|
%exitcond = icmp eq i64 %j, 99
|
|
br i1 %exitcond, label %for1.inc17, label %for2
|
|
|
|
for1.inc17:
|
|
%i.next35 = add nuw nsw i64 %i34, 1
|
|
%exitcond38 = icmp eq i64 %i34, 99
|
|
br i1 %exitcond38, label %for.end19, label %for1.header
|
|
|
|
for.end19:
|
|
ret void
|
|
}
|
|
|
|
;; Loops should not be interchanged in this case as it is not profitable.
|
|
;; for(int i=0;i<100;i++)
|
|
;; for(int j=0;j<100;j++)
|
|
;; A[i][j] = A[i][j]+k;
|
|
|
|
; CHECK: Name: InterchangeNotProfitable
|
|
; CHECK-ENXT: Function: interchange_04
|
|
define void @interchange_04(i32 %k) {
|
|
entry:
|
|
br label %for.cond1.preheader
|
|
|
|
for.cond1.preheader:
|
|
%indvars.iv21 = phi i64 [ 0, %entry ], [ %indvars.iv.next22, %for.inc10 ]
|
|
br label %for.body3
|
|
|
|
for.body3:
|
|
%indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ]
|
|
%arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv21, i64 %indvars.iv
|
|
%0 = load i32, i32* %arrayidx5
|
|
%add = add nsw i32 %0, %k
|
|
store i32 %add, i32* %arrayidx5
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
|
%exitcond = icmp eq i64 %indvars.iv.next, 100
|
|
br i1 %exitcond, label %for.inc10, label %for.body3
|
|
|
|
for.inc10:
|
|
%indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1
|
|
%exitcond23 = icmp eq i64 %indvars.iv.next22, 100
|
|
br i1 %exitcond23, label %for.end12, label %for.cond1.preheader
|
|
|
|
for.end12:
|
|
ret void
|
|
}
|