forked from OSchip/llvm-project
59 lines
2.5 KiB
LLVM
59 lines
2.5 KiB
LLVM
|
; RUN: opt < %s -basicaa -loop-interchange -S | FileCheck %s
|
||
|
|
;; These are test that fail to interchange due to current limitation. This will go off once we extend the loop interchange pass.
|
||
|
|
|
||
|
|
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 [100 x i32]]] zeroinitializer
|
||
|
|
|
||
|
|
;;--------------------------------------Test case 01------------------------------------
|
||
|
|
;; [FIXME] This loop though valid is currently not interchanged due to the limitation that we cannot split the inner loop latch due to multiple use of inner induction
|
||
|
|
;; variable.(used to increment the loop counter and to access A[j+1][i+1]
|
||
|
|
;; for(int i=0;i<N-1;i++)
|
||
|
|
;; for(int j=1;j<N-1;j++)
|
||
|
|
;; A[j+1][i+1] = A[j+1][i+1] + k;
|
||
|
|
|
||
|
|
define void @interchange_01(i32 %k, i32 %N) {
|
||
|
|
entry:
|
||
|
|
%sub = add nsw i32 %N, -1
|
||
|
|
%cmp26 = icmp sgt i32 %N, 1
|
||
|
|
br i1 %cmp26, label %for.cond1.preheader.lr.ph, label %for.end17
|
||
|
|
|
||
|
|
for.cond1.preheader.lr.ph:
|
||
|
|
%cmp324 = icmp sgt i32 %sub, 1
|
||
|
|
%0 = add i32 %N, -2
|
||
|
|
%1 = sext i32 %sub to i64
|
||
|
|
br label %for.cond1.preheader
|
||
|
|
|
||
|
|
for.cond.loopexit:
|
||
|
|
%cmp = icmp slt i64 %indvars.iv.next29, %1
|
||
|
|
br i1 %cmp, label %for.cond1.preheader, label %for.end17
|
||
|
|
|
||
|
|
for.cond1.preheader:
|
||
|
|
%indvars.iv28 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next29, %for.cond.loopexit ]
|
||
|
|
%indvars.iv.next29 = add nuw nsw i64 %indvars.iv28, 1
|
||
|
|
br i1 %cmp324, label %for.body4, label %for.cond.loopexit
|
||
|
|
|
||
|
|
for.body4:
|
||
|
|
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body4 ], [ 1, %for.cond1.preheader ]
|
||
|
|
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
||
|
|
%arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next, i64 %indvars.iv.next29
|
||
|
|
%2 = load i32, i32* %arrayidx7
|
||
|
|
%add8 = add nsw i32 %2, %k
|
||
|
|
store i32 %add8, i32* %arrayidx7
|
||
|
|
%lftr.wideiv = trunc i64 %indvars.iv to i32
|
||
|
|
%exitcond = icmp eq i32 %lftr.wideiv, %0
|
||
|
|
br i1 %exitcond, label %for.cond.loopexit, label %for.body4
|
||
|
|
|
||
|
|
for.end17:
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
;; Inner loop not split so it is not interchanged.
|
||
|
|
; CHECK-LABEL: @interchange_01
|
||
|
|
; CHECK: for.body4:
|
||
|
|
; CHECK-NEXT: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body4 ], [ 1, %for.body4.preheader ]
|
||
|
|
; CHECK-NEXT: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
|
||
|
|
; CHECK-NEXT: %arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next, i64 %indvars.iv.next29
|
||
|
|
|