forked from OSchip/llvm-project
106 lines
3.2 KiB
LLVM
106 lines
3.2 KiB
LLVM
; REQUIRES: asserts
|
|
; RUN: opt < %s -basicaa -loop-interchange -verify-dom-info -verify-loop-info \
|
|
; RUN: -S -debug 2>&1 | FileCheck %s
|
|
|
|
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 i32] zeroinitializer
|
|
@C = common global [100 x [100 x i32]] zeroinitializer
|
|
@D = common global [100 x [100 x [100 x i32]]] zeroinitializer
|
|
|
|
;; Loops not tightly nested are not interchanged
|
|
;; for(int j=0;j<N;j++) {
|
|
;; B[j] = j+k;
|
|
;; for(int i=0;i<N;i++)
|
|
;; A[j][i] = A[j][i]+B[j];
|
|
;; }
|
|
|
|
; CHECK: Not interchanging loops. Cannot prove legality.
|
|
|
|
define void @interchange_05(i32 %k, i32 %N){
|
|
entry:
|
|
%cmp30 = icmp sgt i32 %N, 0
|
|
br i1 %cmp30, label %for.body.lr.ph, label %for.end17
|
|
|
|
for.body.lr.ph:
|
|
%0 = add i32 %N, -1
|
|
%1 = zext i32 %k to i64
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv32 = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next33, %for.inc15 ]
|
|
%2 = add nsw i64 %indvars.iv32, %1
|
|
%arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* @B, i64 0, i64 %indvars.iv32
|
|
%3 = trunc i64 %2 to i32
|
|
store i32 %3, i32* %arrayidx
|
|
br label %for.body3
|
|
|
|
for.body3:
|
|
%indvars.iv = phi i64 [ 0, %for.body ], [ %indvars.iv.next, %for.body3 ]
|
|
%arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv32, i64 %indvars.iv
|
|
%4 = load i32, i32* %arrayidx7
|
|
%add10 = add nsw i32 %3, %4
|
|
store i32 %add10, i32* %arrayidx7
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv to i32
|
|
%exitcond = icmp eq i32 %lftr.wideiv, %0
|
|
br i1 %exitcond, label %for.inc15, label %for.body3
|
|
|
|
for.inc15:
|
|
%indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1
|
|
%lftr.wideiv35 = trunc i64 %indvars.iv32 to i32
|
|
%exitcond36 = icmp eq i32 %lftr.wideiv35, %0
|
|
br i1 %exitcond36, label %for.end17, label %for.body
|
|
|
|
for.end17:
|
|
ret void
|
|
}
|
|
|
|
declare void @foo(...) readnone
|
|
|
|
;; Loops not tightly nested are not interchanged
|
|
;; for(int j=0;j<N;j++) {
|
|
;; foo();
|
|
;; for(int i=2;i<N;i++)
|
|
;; A[j][i] = A[j][i]+k;
|
|
;; }
|
|
|
|
; CHECK: Not interchanging loops. Cannot prove legality.
|
|
|
|
define void @interchange_06(i32 %k, i32 %N) {
|
|
entry:
|
|
%cmp22 = icmp sgt i32 %N, 0
|
|
br i1 %cmp22, label %for.body.lr.ph, label %for.end12
|
|
|
|
for.body.lr.ph:
|
|
%0 = add i32 %N, -1
|
|
br label %for.body
|
|
|
|
for.body:
|
|
%indvars.iv24 = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next25, %for.inc10 ]
|
|
tail call void (...) @foo()
|
|
br label %for.body3
|
|
|
|
for.body3:
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 2, %for.body ]
|
|
%arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv24, i64 %indvars.iv
|
|
%1 = load i32, i32* %arrayidx5
|
|
%add = add nsw i32 %1, %k
|
|
store i32 %add, i32* %arrayidx5
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
|
%lftr.wideiv = trunc i64 %indvars.iv to i32
|
|
%exitcond = icmp eq i32 %lftr.wideiv, %0
|
|
br i1 %exitcond, label %for.inc10, label %for.body3
|
|
|
|
for.inc10:
|
|
%indvars.iv.next25 = add nuw nsw i64 %indvars.iv24, 1
|
|
%lftr.wideiv26 = trunc i64 %indvars.iv24 to i32
|
|
%exitcond27 = icmp eq i32 %lftr.wideiv26, %0
|
|
br i1 %exitcond27, label %for.end12, label %for.body
|
|
|
|
for.end12:
|
|
ret void
|
|
}
|