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llvm-6502/test/Transforms/LoopInterchange/interchange.ll
David Blaikie 32b845d223 [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 
See r230786 and r230794 for similar changes to gep and load
respectively.

Call is a bit different because it often doesn't have a single explicit
type - usually the type is deduced from the arguments, and just the
return type is explicit. In those cases there's no need to change the
IR.

When that's not the case, the IR usually contains the pointer type of
the first operand - but since typed pointers are going away, that
representation is insufficient so I'm just stripping the "pointerness"
of the explicit type away.

This does make the IR a bit weird - it /sort of/ reads like the type of
the first operand: "call void () %x(" but %x is actually of type "void
()*" and will eventually be just of type "ptr". But this seems not too
bad and I don't think it would benefit from repeating the type
("void (), void () * %x(" and then eventually "void (), ptr %x(") as has
been done with gep and load.

This also has a side benefit: since the explicit type is no longer a
pointer, there's no ambiguity between an explicit type and a function
that returns a function pointer. Previously this case needed an explicit
type (eg: a function returning a void() function was written as
"call void () () * @x(" rather than "call void () * @x(" because of the
ambiguity between a function returning a pointer to a void() function
and a function returning void).

No ambiguity means even function pointer return types can just be
written alone, without writing the whole function's type.

This leaves /only/ the varargs case where the explicit type is required.

Given the special type syntax in call instructions, the regex-fu used
for migration was a bit more involved in its own unique way (as every
one of these is) so here it is. Use it in conjunction with the apply.sh
script and associated find/xargs commands I've provided in rr230786 to
migrate your out of tree tests. Do let me know if any of this doesn't
cover your cases & we can iterate on a more general script/regexes to
help others with out of tree tests.

About 9 test cases couldn't be automatically migrated - half of those
were functions returning function pointers, where I just had to manually
delete the function argument types now that we didn't need an explicit
function type there. The other half were typedefs of function types used
in calls - just had to manually drop the * from those.

import fileinput
import sys
import re

pat = re.compile(r'((?:=|:|^|\s)call\s(?:[^@]*?))(\s*$|\s*(?:(?:\[\[[a-zA-Z0-9_]+\]\]|[@%](?:(")?[\\\?@a-zA-Z0-9_.]*?(?(3)"|)|{{.*}}))(?:\(|$)|undef|inttoptr|bitcast|null|asm).*$)')
addrspace_end = re.compile(r"addrspace\(\d+\)\s*\*$")
func_end = re.compile("(?:void.*|\)\s*)\*$")

def conv(match, line):
  if not match or re.search(addrspace_end, match.group(1)) or not re.search(func_end, match.group(1)):
    return line
  return line[:match.start()] + match.group(1)[:match.group(1).rfind('*')].rstrip() + match.group(2) + line[match.end():]

for line in sys.stdin:
  sys.stdout.write(conv(re.search(pat, line), line))

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@235145 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-16 23:24:18 +00:00

558 lines
23 KiB
LLVM
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; RUN: opt < %s -basicaa -loop-interchange -S | FileCheck %s
;; We test the complete .ll for adjustment in outer loop header/latch and inner loop header/latch.
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
declare void @foo(...)
;;--------------------------------------Test case 01------------------------------------
;; for(int i=0;i<N;i++)
;; for(int j=1;j<N;j++)
;; A[j][i] = A[j][i]+k;
define void @interchange_01(i32 %k, i32 %N) {
entry:
%cmp21 = icmp sgt i32 %N, 0
br i1 %cmp21, label %for.cond1.preheader.lr.ph, label %for.end12
for.cond1.preheader.lr.ph:
%cmp219 = icmp sgt i32 %N, 1
%0 = add i32 %N, -1
br label %for.cond1.preheader
for.cond1.preheader:
%indvars.iv23 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next24, %for.inc10 ]
br i1 %cmp219, label %for.body3, label %for.inc10
for.body3:
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.cond1.preheader ]
%arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv23
%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.next24 = add nuw nsw i64 %indvars.iv23, 1
%lftr.wideiv25 = trunc i64 %indvars.iv23 to i32
%exitcond26 = icmp eq i32 %lftr.wideiv25, %0
br i1 %exitcond26, label %for.end12, label %for.cond1.preheader
for.end12:
ret void
}
; CHECK-LABEL: @interchange_01
; CHECK: entry:
; CHECK: %cmp21 = icmp sgt i32 %N, 0
; CHECK: br i1 %cmp21, label %for.body3.preheader, label %for.end12
; CHECK: for.cond1.preheader.lr.ph:
; CHECK: br label %for.cond1.preheader
; CHECK: for.cond1.preheader:
; CHECK: %indvars.iv23 = phi i64 [ 0, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next24, %for.inc10 ]
; CHECK: br i1 %cmp219, label %for.body3.split1, label %for.end12.loopexit
; CHECK: for.body3.preheader:
; CHECK: %cmp219 = icmp sgt i32 %N, 1
; CHECK: %0 = add i32 %N, -1
; CHECK: br label %for.body3
; CHECK: for.body3:
; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3.split ], [ 1, %for.body3.preheader ]
; CHECK: br label %for.cond1.preheader.lr.ph
; CHECK: for.body3.split1:
; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv23
; CHECK: %1 = load i32, i32* %arrayidx5
; CHECK: %add = add nsw i32 %1, %k
; CHECK: store i32 %add, i32* %arrayidx5
; CHECK: br label %for.inc10.loopexit
; CHECK: for.body3.split:
; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
; CHECK: %lftr.wideiv = trunc i64 %indvars.iv to i32
; CHECK: %exitcond = icmp eq i32 %lftr.wideiv, %0
; CHECK: br i1 %exitcond, label %for.end12.loopexit, label %for.body3
; CHECK: for.inc10.loopexit:
; CHECK: br label %for.inc10
; CHECK: for.inc10:
; CHECK: %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
; CHECK: %lftr.wideiv25 = trunc i64 %indvars.iv23 to i32
; CHECK: %exitcond26 = icmp eq i32 %lftr.wideiv25, %0
; CHECK: br i1 %exitcond26, label %for.body3.split, label %for.cond1.preheader
; CHECK: for.end12.loopexit:
; CHECK: br label %for.end12
; CHECK: for.end12:
; CHECK: ret void
;;--------------------------------------Test case 02-------------------------------------
;; for(int i=0;i<100;i++)
;; for(int j=100;j>=0;j--)
;; A[j][i] = A[j][i]+k;
define void @interchange_02(i32 %k) {
entry:
br label %for.cond1.preheader
for.cond1.preheader:
%indvars.iv19 = phi i64 [ 0, %entry ], [ %indvars.iv.next20, %for.inc10 ]
br label %for.body3
for.body3:
%indvars.iv = phi i64 [ 100, %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.iv, i64 %indvars.iv19
%0 = load i32, i32* %arrayidx5
%add = add nsw i32 %0, %k
store i32 %add, i32* %arrayidx5
%indvars.iv.next = add nsw i64 %indvars.iv, -1
%cmp2 = icmp sgt i64 %indvars.iv, 0
br i1 %cmp2, label %for.body3, label %for.inc10
for.inc10:
%indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
%exitcond = icmp eq i64 %indvars.iv.next20, 100
br i1 %exitcond, label %for.end11, label %for.cond1.preheader
for.end11:
ret void
}
; CHECK-LABEL: @interchange_02
; CHECK: entry:
; CHECK: br label %for.body3.preheader
; CHECK: for.cond1.preheader.preheader:
; CHECK: br label %for.cond1.preheader
; CHECK: for.cond1.preheader:
; CHECK: %indvars.iv19 = phi i64 [ %indvars.iv.next20, %for.inc10 ], [ 0, %for.cond1.preheader.preheader ]
; CHECK: br label %for.body3.split1
; CHECK: for.body3.preheader:
; CHECK: br label %for.body3
; CHECK: for.body3:
; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3.split ], [ 100, %for.body3.preheader ]
; CHECK: br label %for.cond1.preheader.preheader
; CHECK: for.body3.split1: ; preds = %for.cond1.preheader
; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv19
; CHECK: %0 = load i32, i32* %arrayidx5
; CHECK: %add = add nsw i32 %0, %k
; CHECK: store i32 %add, i32* %arrayidx5
; CHECK: br label %for.inc10
; CHECK: for.body3.split:
; CHECK: %indvars.iv.next = add nsw i64 %indvars.iv, -1
; CHECK: %cmp2 = icmp sgt i64 %indvars.iv, 0
; CHECK: br i1 %cmp2, label %for.body3, label %for.end11
; CHECK: for.inc10:
; CHECK: %indvars.iv.next20 = add nuw nsw i64 %indvars.iv19, 1
; CHECK: %exitcond = icmp eq i64 %indvars.iv.next20, 100
; CHECK: br i1 %exitcond, label %for.body3.split, label %for.cond1.preheader
; CHECK: for.end11:
; CHECK: ret void
;;--------------------------------------Test case 03-------------------------------------
;; 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;
define void @interchange_03(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
}
; CHECK-LABEL: @interchange_03
; CHECK: entry:
; CHECK: br label %for.cond1.preheader.preheader
; CHECK: for.cond1.preheader.preheader: ; preds = %entry
; CHECK: br label %for.cond1.preheader
; CHECK: for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc10
; CHECK: %indvars.iv21 = phi i64 [ %indvars.iv.next22, %for.inc10 ], [ 0, %for.cond1.preheader.preheader ]
; CHECK: br label %for.body3.preheader
; CHECK: for.body3.preheader: ; preds = %for.cond1.preheader
; CHECK: br label %for.body3
; CHECK: for.body3: ; preds = %for.body3.preheader, %for.body3
; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 0, %for.body3.preheader ]
; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv21, i64 %indvars.iv
; CHECK: %0 = load i32, i32* %arrayidx5
; CHECK: %add = add nsw i32 %0, %k
; CHECK: store i32 %add, i32* %arrayidx5
; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
; CHECK: %exitcond = icmp eq i64 %indvars.iv.next, 100
; CHECK: br i1 %exitcond, label %for.inc10, label %for.body3
; CHECK: for.inc10: ; preds = %for.body3
; CHECK: %indvars.iv.next22 = add nuw nsw i64 %indvars.iv21, 1
; CHECK: %exitcond23 = icmp eq i64 %indvars.iv.next22, 100
; CHECK: br i1 %exitcond23, label %for.end12, label %for.cond1.preheader
; CHECK: for.end12: ; preds = %for.inc10
; CHECK: ret void
;;--------------------------------------Test case 04-------------------------------------
;; Loops should not be interchanged in this case as it is not legal due to dependency.
;; for(int j=0;j<99;j++)
;; for(int i=0;i<99;i++)
;; A[j][i+1] = A[j+1][i]+k;
define void @interchange_04(i32 %k){
entry:
br label %for.cond1.preheader
for.cond1.preheader:
%indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.inc12 ]
%indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
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.iv.next24, i64 %indvars.iv
%0 = load i32, i32* %arrayidx5
%add6 = add nsw i32 %0, %k
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%arrayidx11 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv23, i64 %indvars.iv.next
store i32 %add6, i32* %arrayidx11
%exitcond = icmp eq i64 %indvars.iv.next, 99
br i1 %exitcond, label %for.inc12, label %for.body3
for.inc12:
%exitcond25 = icmp eq i64 %indvars.iv.next24, 99
br i1 %exitcond25, label %for.end14, label %for.cond1.preheader
for.end14:
ret void
}
; CHECK-LABEL: @interchange_04
; CHECK: entry:
; CHECK: br label %for.cond1.preheader
; CHECK: for.cond1.preheader: ; preds = %for.inc12, %entry
; CHECK: %indvars.iv23 = phi i64 [ 0, %entry ], [ %indvars.iv.next24, %for.inc12 ]
; CHECK: %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
; CHECK: br label %for.body3
; CHECK: for.body3: ; preds = %for.body3, %for.cond1.preheader
; CHECK: %indvars.iv = phi i64 [ 0, %for.cond1.preheader ], [ %indvars.iv.next, %for.body3 ]
; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv.next24, i64 %indvars.iv
; CHECK: %0 = load i32, i32* %arrayidx5
; CHECK: %add6 = add nsw i32 %0, %k
; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
; CHECK: %arrayidx11 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv23, i64 %indvars.iv.next
; CHECK: store i32 %add6, i32* %arrayidx11
; CHECK: %exitcond = icmp eq i64 %indvars.iv.next, 99
; CHECK: br i1 %exitcond, label %for.inc12, label %for.body3
; CHECK: for.inc12: ; preds = %for.body3
; CHECK: %exitcond25 = icmp eq i64 %indvars.iv.next24, 99
; CHECK: br i1 %exitcond25, label %for.end14, label %for.cond1.preheader
; CHECK: for.end14: ; preds = %for.inc12
; CHECK: ret void
;;--------------------------------------Test case 05-------------------------------------
;; 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];
;; }
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
}
; CHECK-LABEL: @interchange_05
; CHECK: entry:
; CHECK: %cmp30 = icmp sgt i32 %N, 0
; CHECK: br i1 %cmp30, label %for.body.lr.ph, label %for.end17
; CHECK: for.body.lr.ph:
; CHECK: %0 = add i32 %N, -1
; CHECK: %1 = zext i32 %k to i64
; CHECK: br label %for.body
; CHECK: for.body:
; CHECK: %indvars.iv32 = phi i64 [ 0, %for.body.lr.ph ], [ %indvars.iv.next33, %for.inc15 ]
; CHECK: %2 = add nsw i64 %indvars.iv32, %1
; CHECK: %arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* @B, i64 0, i64 %indvars.iv32
; CHECK: %3 = trunc i64 %2 to i32
; CHECK: store i32 %3, i32* %arrayidx
; CHECK: br label %for.body3.preheader
; CHECK: for.body3.preheader:
; CHECK: br label %for.body3
; CHECK: for.body3:
; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 0, %for.body3.preheader ]
; CHECK: %arrayidx7 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv32, i64 %indvars.iv
; CHECK: %4 = load i32, i32* %arrayidx7
; CHECK: %add10 = add nsw i32 %3, %4
; CHECK: store i32 %add10, i32* %arrayidx7
; CHECK: %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
; CHECK: %lftr.wideiv = trunc i64 %indvars.iv to i32
; CHECK: %exitcond = icmp eq i32 %lftr.wideiv, %0
; CHECK: br i1 %exitcond, label %for.inc15, label %for.body3
; CHECK: for.inc15:
; CHECK: %indvars.iv.next33 = add nuw nsw i64 %indvars.iv32, 1
; CHECK: %lftr.wideiv35 = trunc i64 %indvars.iv32 to i32
; CHECK: %exitcond36 = icmp eq i32 %lftr.wideiv35, %0
; CHECK: br i1 %exitcond36, label %for.end17.loopexit, label %for.body
; CHECK: for.end17.loopexit:
; CHECK: br label %for.end17
; CHECK: for.end17:
; CHECK: ret void
;;--------------------------------------Test case 06-------------------------------------
;; 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;
;; }
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
}
;; Here we are checking if the inner phi is not split then we have not interchanged.
; CHECK-LABEL: @interchange_06
; CHECK: phi i64 [ %indvars.iv.next, %for.body3 ], [ 2, %for.body3.preheader ]
; CHECK-NEXT: getelementptr
; CHECK-NEXT: %1 = load
;;--------------------------------------Test case 07-------------------------------------
;; FIXME:
;; Test for interchange when we have an lcssa phi. This should ideally be interchanged but it is currently not supported.
;; for(gi=1;gi<N;gi++)
;; for(gj=1;gj<M;gj++)
;; A[gj][gi] = A[gj - 1][gi] + C[gj][gi];
@gi = common global i32 0
@gj = common global i32 0
define void @interchange_07(i32 %N, i32 %M){
entry:
store i32 1, i32* @gi
%cmp21 = icmp sgt i32 %N, 1
br i1 %cmp21, label %for.cond1.preheader.lr.ph, label %for.end16
for.cond1.preheader.lr.ph:
%cmp218 = icmp sgt i32 %M, 1
%gi.promoted = load i32, i32* @gi
%0 = add i32 %M, -1
%1 = sext i32 %gi.promoted to i64
%2 = sext i32 %N to i64
%3 = add i32 %gi.promoted, 1
%4 = icmp slt i32 %3, %N
%smax = select i1 %4, i32 %N, i32 %3
br label %for.cond1.preheader
for.cond1.preheader:
%indvars.iv25 = phi i64 [ %1, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next26, %for.inc14 ]
br i1 %cmp218, label %for.body3, label %for.inc14
for.body3:
%indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.cond1.preheader ]
%5 = add nsw i64 %indvars.iv, -1
%arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %5, i64 %indvars.iv25
%6 = load i32, i32* %arrayidx5
%arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @C, i64 0, i64 %indvars.iv, i64 %indvars.iv25
%7 = load i32, i32* %arrayidx9
%add = add nsw i32 %7, %6
%arrayidx13 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %indvars.iv, i64 %indvars.iv25
store i32 %add, i32* %arrayidx13
%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.inc14, label %for.body3
for.inc14:
%inc.lcssa23 = phi i32 [ 1, %for.cond1.preheader ], [ %M, %for.body3 ]
%indvars.iv.next26 = add nsw i64 %indvars.iv25, 1
%cmp = icmp slt i64 %indvars.iv.next26, %2
br i1 %cmp, label %for.cond1.preheader, label %for.cond.for.end16_crit_edge
for.cond.for.end16_crit_edge:
store i32 %inc.lcssa23, i32* @gj
store i32 %smax, i32* @gi
br label %for.end16
for.end16:
ret void
}
; CHECK-LABEL: @interchange_07
; CHECK: for.body3: ; preds = %for.body3.preheader, %for.body3
; CHECK: %indvars.iv = phi i64 [ %indvars.iv.next, %for.body3 ], [ 1, %for.body3.preheader ]
; CHECK: %5 = add nsw i64 %indvars.iv, -1
; CHECK: %arrayidx5 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @A, i64 0, i64 %5, i64 %indvars.iv25
; CHECK: %6 = load i32, i32* %arrayidx5
; CHECK: %arrayidx9 = getelementptr inbounds [100 x [100 x i32]], [100 x [100 x i32]]* @C, i64 0, i64 %indvars.iv, i64 %indvars.iv25
;;------------------------------------------------Test case 08-------------------------------
;; Test for interchange in loop nest greater than 2.
;; for(int i=0;i<100;i++)
;; for(int j=0;j<100;j++)
;; for(int k=0;k<100;k++)
;; D[i][k][j] = D[i][k][j]+t;
define void @interchange_08(i32 %t){
entry:
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.inc15, %entry
%i.028 = phi i32 [ 0, %entry ], [ %inc16, %for.inc15 ]
br label %for.cond4.preheader
for.cond4.preheader: ; preds = %for.inc12, %for.cond1.preheader
%j.027 = phi i32 [ 0, %for.cond1.preheader ], [ %inc13, %for.inc12 ]
br label %for.body6
for.body6: ; preds = %for.body6, %for.cond4.preheader
%k.026 = phi i32 [ 0, %for.cond4.preheader ], [ %inc, %for.body6 ]
%arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], [100 x [100 x [100 x i32]]]* @D, i32 0, i32 %i.028, i32 %k.026, i32 %j.027
%0 = load i32, i32* %arrayidx8
%add = add nsw i32 %0, %t
store i32 %add, i32* %arrayidx8
%inc = add nuw nsw i32 %k.026, 1
%exitcond = icmp eq i32 %inc, 100
br i1 %exitcond, label %for.inc12, label %for.body6
for.inc12: ; preds = %for.body6
%inc13 = add nuw nsw i32 %j.027, 1
%exitcond29 = icmp eq i32 %inc13, 100
br i1 %exitcond29, label %for.inc15, label %for.cond4.preheader
for.inc15: ; preds = %for.inc12
%inc16 = add nuw nsw i32 %i.028, 1
%exitcond30 = icmp eq i32 %inc16, 100
br i1 %exitcond30, label %for.end17, label %for.cond1.preheader
for.end17: ; preds = %for.inc15
ret void
}
; CHECK-LABEL: @interchange_08
; CHECK: entry:
; CHECK: br label %for.cond1.preheader.preheader
; CHECK: for.cond1.preheader.preheader: ; preds = %entry
; CHECK: br label %for.cond1.preheader
; CHECK: for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc15
; CHECK: %i.028 = phi i32 [ %inc16, %for.inc15 ], [ 0, %for.cond1.preheader.preheader ]
; CHECK: br label %for.body6.preheader
; CHECK: for.cond4.preheader.preheader: ; preds = %for.body6
; CHECK: br label %for.cond4.preheader
; CHECK: for.cond4.preheader: ; preds = %for.cond4.preheader.preheader, %for.inc12
; CHECK: %j.027 = phi i32 [ %inc13, %for.inc12 ], [ 0, %for.cond4.preheader.preheader ]
; CHECK: br label %for.body6.split1
; CHECK: for.body6.preheader: ; preds = %for.cond1.preheader
; CHECK: br label %for.body6
; CHECK: for.body6: ; preds = %for.body6.preheader, %for.body6.split
; CHECK: %k.026 = phi i32 [ %inc, %for.body6.split ], [ 0, %for.body6.preheader ]
; CHECK: br label %for.cond4.preheader.preheader
; CHECK: for.body6.split1: ; preds = %for.cond4.preheader
; CHECK: %arrayidx8 = getelementptr inbounds [100 x [100 x [100 x i32]]], [100 x [100 x [100 x i32]]]* @D, i32 0, i32 %i.028, i32 %k.026, i32 %j.027
; CHECK: %0 = load i32, i32* %arrayidx8
; CHECK: %add = add nsw i32 %0, %t
; CHECK: store i32 %add, i32* %arrayidx8
; CHECK: br label %for.inc12
; CHECK: for.body6.split: ; preds = %for.inc12
; CHECK: %inc = add nuw nsw i32 %k.026, 1
; CHECK: %exitcond = icmp eq i32 %inc, 100
; CHECK: br i1 %exitcond, label %for.inc15, label %for.body6
; CHECK: for.inc12: ; preds = %for.body6.split1
; CHECK: %inc13 = add nuw nsw i32 %j.027, 1
; CHECK: %exitcond29 = icmp eq i32 %inc13, 100
; CHECK: br i1 %exitcond29, label %for.body6.split, label %for.cond4.preheader
; CHECK: for.inc15: ; preds = %for.body6.split
; CHECK: %inc16 = add nuw nsw i32 %i.028, 1
; CHECK: %exitcond30 = icmp eq i32 %inc16, 100
; CHECK: br i1 %exitcond30, label %for.end17, label %for.cond1.preheader
; CHECK: for.end17: ; preds = %for.inc15
; CHECK: ret void
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