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llvm-mirror/test/Transforms/IRCE/with-parent-loops.ll
Fedor Sergeev 3a27395ee7 [New PM][IRCE] port of Inductive Range Check Elimination pass to the new pass manager
There are two nontrivial details here:
* Loop structure update interface is quite different with new pass manager,
  so the code to add new loops was factored out

* BranchProbabilityInfo is not a loop analysis, so it can not be just getResult'ed from
  within the loop pass. It cant even be queried through getCachedResult as LoopCanonicalization
  sequence (e.g. LoopSimplify) might invalidate BPI results.

  Complete solution for BPI will likely take some time to discuss and figure out,
  so for now this was partially solved by making BPI optional in IRCE
  (skipping a couple of profitability checks if it is absent).

Most of the IRCE tests got their corresponding new-pass-manager variant enabled.
Only two of them depend on BPI, both marked with TODO, to be turned on when BPI
starts being available for loop passes.

Reviewers: chandlerc, mkazantsev, sanjoy, asbirlea
Reviewed By: mkazantsev
Differential Revision: https://reviews.llvm.org/D43795

llvm-svn: 327619
2018-03-15 11:01:19 +00:00

347 lines
15 KiB
LLVM

; RUN: opt -verify-loop-info -irce-print-changed-loops -irce < %s 2>&1 | FileCheck %s
; RUN: opt -verify-loop-info -irce-print-changed-loops -passes='require<branch-prob>,loop(irce)' < %s 2>&1 | FileCheck %s
; This test checks if we update the LoopInfo correctly in the presence
; of parents, uncles and cousins.
; Function Attrs: alwaysinline
define void @inner_loop(i32* %arr, i32* %a_len_ptr, i32 %n) #0 {
; CHECK: irce: in function inner_loop: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
entry:
%len = load i32, i32* %a_len_ptr, !range !0
%first.itr.check = icmp sgt i32 %n, 0
br i1 %first.itr.check, label %loop, label %exit
loop: ; preds = %in.bounds, %entry
%idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ]
%idx.next = add i32 %idx, 1
%abc = icmp slt i32 %idx, %len
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
in.bounds: ; preds = %loop
%addr = getelementptr i32, i32* %arr, i32 %idx
store i32 0, i32* %addr
%next = icmp slt i32 %idx.next, %n
br i1 %next, label %loop, label %exit
out.of.bounds: ; preds = %loop
ret void
exit: ; preds = %in.bounds, %entry
ret void
}
; Function Attrs: alwaysinline
define void @with_parent(i32* %arr, i32* %a_len_ptr, i32 %n, i32 %parent.count) #0 {
; CHECK: irce: in function with_parent: constrained Loop at depth 2 containing: %loop.i<header><exiting>,%in.bounds.i<latch><exiting>
entry:
br label %loop
loop: ; preds = %inner_loop.exit, %entry
%idx = phi i32 [ 0, %entry ], [ %idx.next, %inner_loop.exit ]
%idx.next = add i32 %idx, 1
%next = icmp ult i32 %idx.next, %parent.count
%len.i = load i32, i32* %a_len_ptr, !range !0
%first.itr.check.i = icmp sgt i32 %n, 0
br i1 %first.itr.check.i, label %loop.i, label %exit.i
loop.i: ; preds = %in.bounds.i, %loop
%idx.i = phi i32 [ 0, %loop ], [ %idx.next.i, %in.bounds.i ]
%idx.next.i = add i32 %idx.i, 1
%abc.i = icmp slt i32 %idx.i, %len.i
br i1 %abc.i, label %in.bounds.i, label %out.of.bounds.i, !prof !1
in.bounds.i: ; preds = %loop.i
%addr.i = getelementptr i32, i32* %arr, i32 %idx.i
store i32 0, i32* %addr.i
%next.i = icmp slt i32 %idx.next.i, %n
br i1 %next.i, label %loop.i, label %exit.i
out.of.bounds.i: ; preds = %loop.i
br label %inner_loop.exit
exit.i: ; preds = %in.bounds.i, %loop
br label %inner_loop.exit
inner_loop.exit: ; preds = %exit.i, %out.of.bounds.i
br i1 %next, label %loop, label %exit
exit: ; preds = %inner_loop.exit
ret void
}
; Function Attrs: alwaysinline
define void @with_grandparent(i32* %arr, i32* %a_len_ptr, i32 %n, i32 %parent.count, i32 %grandparent.count) #0 {
; CHECK: irce: in function with_grandparent: constrained Loop at depth 3 containing: %loop.i.i<header><exiting>,%in.bounds.i.i<latch><exiting>
entry:
br label %loop
loop: ; preds = %with_parent.exit, %entry
%idx = phi i32 [ 0, %entry ], [ %idx.next, %with_parent.exit ]
%idx.next = add i32 %idx, 1
%next = icmp ult i32 %idx.next, %grandparent.count
br label %loop.i
loop.i: ; preds = %inner_loop.exit.i, %loop
%idx.i = phi i32 [ 0, %loop ], [ %idx.next.i, %inner_loop.exit.i ]
%idx.next.i = add i32 %idx.i, 1
%next.i = icmp ult i32 %idx.next.i, %parent.count
%len.i.i = load i32, i32* %a_len_ptr, !range !0
%first.itr.check.i.i = icmp sgt i32 %n, 0
br i1 %first.itr.check.i.i, label %loop.i.i, label %exit.i.i
loop.i.i: ; preds = %in.bounds.i.i, %loop.i
%idx.i.i = phi i32 [ 0, %loop.i ], [ %idx.next.i.i, %in.bounds.i.i ]
%idx.next.i.i = add i32 %idx.i.i, 1
%abc.i.i = icmp slt i32 %idx.i.i, %len.i.i
br i1 %abc.i.i, label %in.bounds.i.i, label %out.of.bounds.i.i, !prof !1
in.bounds.i.i: ; preds = %loop.i.i
%addr.i.i = getelementptr i32, i32* %arr, i32 %idx.i.i
store i32 0, i32* %addr.i.i
%next.i.i = icmp slt i32 %idx.next.i.i, %n
br i1 %next.i.i, label %loop.i.i, label %exit.i.i
out.of.bounds.i.i: ; preds = %loop.i.i
br label %inner_loop.exit.i
exit.i.i: ; preds = %in.bounds.i.i, %loop.i
br label %inner_loop.exit.i
inner_loop.exit.i: ; preds = %exit.i.i, %out.of.bounds.i.i
br i1 %next.i, label %loop.i, label %with_parent.exit
with_parent.exit: ; preds = %inner_loop.exit.i
br i1 %next, label %loop, label %exit
exit: ; preds = %with_parent.exit
ret void
}
; Function Attrs: alwaysinline
define void @with_sibling(i32* %arr, i32* %a_len_ptr, i32 %n, i32 %parent.count) #0 {
; CHECK: irce: in function with_sibling: constrained Loop at depth 2 containing: %loop.i<header><exiting>,%in.bounds.i<latch><exiting>
; CHECK: irce: in function with_sibling: constrained Loop at depth 2 containing: %loop.i6<header><exiting>,%in.bounds.i9<latch><exiting>
entry:
br label %loop
loop: ; preds = %inner_loop.exit12, %entry
%idx = phi i32 [ 0, %entry ], [ %idx.next, %inner_loop.exit12 ]
%idx.next = add i32 %idx, 1
%next = icmp ult i32 %idx.next, %parent.count
%len.i = load i32, i32* %a_len_ptr, !range !0
%first.itr.check.i = icmp sgt i32 %n, 0
br i1 %first.itr.check.i, label %loop.i, label %exit.i
loop.i: ; preds = %in.bounds.i, %loop
%idx.i = phi i32 [ 0, %loop ], [ %idx.next.i, %in.bounds.i ]
%idx.next.i = add i32 %idx.i, 1
%abc.i = icmp slt i32 %idx.i, %len.i
br i1 %abc.i, label %in.bounds.i, label %out.of.bounds.i, !prof !1
in.bounds.i: ; preds = %loop.i
%addr.i = getelementptr i32, i32* %arr, i32 %idx.i
store i32 0, i32* %addr.i
%next.i = icmp slt i32 %idx.next.i, %n
br i1 %next.i, label %loop.i, label %exit.i
out.of.bounds.i: ; preds = %loop.i
br label %inner_loop.exit
exit.i: ; preds = %in.bounds.i, %loop
br label %inner_loop.exit
inner_loop.exit: ; preds = %exit.i, %out.of.bounds.i
%len.i1 = load i32, i32* %a_len_ptr, !range !0
%first.itr.check.i2 = icmp sgt i32 %n, 0
br i1 %first.itr.check.i2, label %loop.i6, label %exit.i11
loop.i6: ; preds = %in.bounds.i9, %inner_loop.exit
%idx.i3 = phi i32 [ 0, %inner_loop.exit ], [ %idx.next.i4, %in.bounds.i9 ]
%idx.next.i4 = add i32 %idx.i3, 1
%abc.i5 = icmp slt i32 %idx.i3, %len.i1
br i1 %abc.i5, label %in.bounds.i9, label %out.of.bounds.i10, !prof !1
in.bounds.i9: ; preds = %loop.i6
%addr.i7 = getelementptr i32, i32* %arr, i32 %idx.i3
store i32 0, i32* %addr.i7
%next.i8 = icmp slt i32 %idx.next.i4, %n
br i1 %next.i8, label %loop.i6, label %exit.i11
out.of.bounds.i10: ; preds = %loop.i6
br label %inner_loop.exit12
exit.i11: ; preds = %in.bounds.i9, %inner_loop.exit
br label %inner_loop.exit12
inner_loop.exit12: ; preds = %exit.i11, %out.of.bounds.i10
br i1 %next, label %loop, label %exit
exit: ; preds = %inner_loop.exit12
ret void
}
; Function Attrs: alwaysinline
define void @with_cousin(i32* %arr, i32* %a_len_ptr, i32 %n, i32 %parent.count, i32 %grandparent.count) #0 {
; CHECK: irce: in function with_cousin: constrained Loop at depth 3 containing: %loop.i.i<header><exiting>,%in.bounds.i.i<latch><exiting>
; CHECK: irce: in function with_cousin: constrained Loop at depth 3 containing: %loop.i.i10<header><exiting>,%in.bounds.i.i13<latch><exiting>
entry:
br label %loop
loop: ; preds = %with_parent.exit17, %entry
%idx = phi i32 [ 0, %entry ], [ %idx.next, %with_parent.exit17 ]
%idx.next = add i32 %idx, 1
%next = icmp ult i32 %idx.next, %grandparent.count
br label %loop.i
loop.i: ; preds = %inner_loop.exit.i, %loop
%idx.i = phi i32 [ 0, %loop ], [ %idx.next.i, %inner_loop.exit.i ]
%idx.next.i = add i32 %idx.i, 1
%next.i = icmp ult i32 %idx.next.i, %parent.count
%len.i.i = load i32, i32* %a_len_ptr, !range !0
%first.itr.check.i.i = icmp sgt i32 %n, 0
br i1 %first.itr.check.i.i, label %loop.i.i, label %exit.i.i
loop.i.i: ; preds = %in.bounds.i.i, %loop.i
%idx.i.i = phi i32 [ 0, %loop.i ], [ %idx.next.i.i, %in.bounds.i.i ]
%idx.next.i.i = add i32 %idx.i.i, 1
%abc.i.i = icmp slt i32 %idx.i.i, %len.i.i
br i1 %abc.i.i, label %in.bounds.i.i, label %out.of.bounds.i.i, !prof !1
in.bounds.i.i: ; preds = %loop.i.i
%addr.i.i = getelementptr i32, i32* %arr, i32 %idx.i.i
store i32 0, i32* %addr.i.i
%next.i.i = icmp slt i32 %idx.next.i.i, %n
br i1 %next.i.i, label %loop.i.i, label %exit.i.i
out.of.bounds.i.i: ; preds = %loop.i.i
br label %inner_loop.exit.i
exit.i.i: ; preds = %in.bounds.i.i, %loop.i
br label %inner_loop.exit.i
inner_loop.exit.i: ; preds = %exit.i.i, %out.of.bounds.i.i
br i1 %next.i, label %loop.i, label %with_parent.exit
with_parent.exit: ; preds = %inner_loop.exit.i
br label %loop.i6
loop.i6: ; preds = %inner_loop.exit.i16, %with_parent.exit
%idx.i1 = phi i32 [ 0, %with_parent.exit ], [ %idx.next.i2, %inner_loop.exit.i16 ]
%idx.next.i2 = add i32 %idx.i1, 1
%next.i3 = icmp ult i32 %idx.next.i2, %parent.count
%len.i.i4 = load i32, i32* %a_len_ptr, !range !0
%first.itr.check.i.i5 = icmp sgt i32 %n, 0
br i1 %first.itr.check.i.i5, label %loop.i.i10, label %exit.i.i15
loop.i.i10: ; preds = %in.bounds.i.i13, %loop.i6
%idx.i.i7 = phi i32 [ 0, %loop.i6 ], [ %idx.next.i.i8, %in.bounds.i.i13 ]
%idx.next.i.i8 = add i32 %idx.i.i7, 1
%abc.i.i9 = icmp slt i32 %idx.i.i7, %len.i.i4
br i1 %abc.i.i9, label %in.bounds.i.i13, label %out.of.bounds.i.i14, !prof !1
in.bounds.i.i13: ; preds = %loop.i.i10
%addr.i.i11 = getelementptr i32, i32* %arr, i32 %idx.i.i7
store i32 0, i32* %addr.i.i11
%next.i.i12 = icmp slt i32 %idx.next.i.i8, %n
br i1 %next.i.i12, label %loop.i.i10, label %exit.i.i15
out.of.bounds.i.i14: ; preds = %loop.i.i10
br label %inner_loop.exit.i16
exit.i.i15: ; preds = %in.bounds.i.i13, %loop.i6
br label %inner_loop.exit.i16
inner_loop.exit.i16: ; preds = %exit.i.i15, %out.of.bounds.i.i14
br i1 %next.i3, label %loop.i6, label %with_parent.exit17
with_parent.exit17: ; preds = %inner_loop.exit.i16
br i1 %next, label %loop, label %exit
exit: ; preds = %with_parent.exit17
ret void
}
; Function Attrs: alwaysinline
define void @with_uncle(i32* %arr, i32* %a_len_ptr, i32 %n, i32 %parent.count, i32 %grandparent.count) #0 {
; CHECK: irce: in function with_uncle: constrained Loop at depth 2 containing: %loop.i<header><exiting>,%in.bounds.i<latch><exiting>
; CHECK: irce: in function with_uncle: constrained Loop at depth 3 containing: %loop.i.i<header><exiting>,%in.bounds.i.i<latch><exiting>
entry:
br label %loop
loop: ; preds = %with_parent.exit, %entry
%idx = phi i32 [ 0, %entry ], [ %idx.next, %with_parent.exit ]
%idx.next = add i32 %idx, 1
%next = icmp ult i32 %idx.next, %grandparent.count
%len.i = load i32, i32* %a_len_ptr, !range !0
%first.itr.check.i = icmp sgt i32 %n, 0
br i1 %first.itr.check.i, label %loop.i, label %exit.i
loop.i: ; preds = %in.bounds.i, %loop
%idx.i = phi i32 [ 0, %loop ], [ %idx.next.i, %in.bounds.i ]
%idx.next.i = add i32 %idx.i, 1
%abc.i = icmp slt i32 %idx.i, %len.i
br i1 %abc.i, label %in.bounds.i, label %out.of.bounds.i, !prof !1
in.bounds.i: ; preds = %loop.i
%addr.i = getelementptr i32, i32* %arr, i32 %idx.i
store i32 0, i32* %addr.i
%next.i = icmp slt i32 %idx.next.i, %n
br i1 %next.i, label %loop.i, label %exit.i
out.of.bounds.i: ; preds = %loop.i
br label %inner_loop.exit
exit.i: ; preds = %in.bounds.i, %loop
br label %inner_loop.exit
inner_loop.exit: ; preds = %exit.i, %out.of.bounds.i
br label %loop.i4
loop.i4: ; preds = %inner_loop.exit.i, %inner_loop.exit
%idx.i1 = phi i32 [ 0, %inner_loop.exit ], [ %idx.next.i2, %inner_loop.exit.i ]
%idx.next.i2 = add i32 %idx.i1, 1
%next.i3 = icmp ult i32 %idx.next.i2, %parent.count
%len.i.i = load i32, i32* %a_len_ptr, !range !0
%first.itr.check.i.i = icmp sgt i32 %n, 0
br i1 %first.itr.check.i.i, label %loop.i.i, label %exit.i.i
loop.i.i: ; preds = %in.bounds.i.i, %loop.i4
%idx.i.i = phi i32 [ 0, %loop.i4 ], [ %idx.next.i.i, %in.bounds.i.i ]
%idx.next.i.i = add i32 %idx.i.i, 1
%abc.i.i = icmp slt i32 %idx.i.i, %len.i.i
br i1 %abc.i.i, label %in.bounds.i.i, label %out.of.bounds.i.i, !prof !1
in.bounds.i.i: ; preds = %loop.i.i
%addr.i.i = getelementptr i32, i32* %arr, i32 %idx.i.i
store i32 0, i32* %addr.i.i
%next.i.i = icmp slt i32 %idx.next.i.i, %n
br i1 %next.i.i, label %loop.i.i, label %exit.i.i
out.of.bounds.i.i: ; preds = %loop.i.i
br label %inner_loop.exit.i
exit.i.i: ; preds = %in.bounds.i.i, %loop.i4
br label %inner_loop.exit.i
inner_loop.exit.i: ; preds = %exit.i.i, %out.of.bounds.i.i
br i1 %next.i3, label %loop.i4, label %with_parent.exit
with_parent.exit: ; preds = %inner_loop.exit.i
br i1 %next, label %loop, label %exit
exit: ; preds = %with_parent.exit
ret void
}
attributes #0 = { alwaysinline }
!0 = !{i32 0, i32 2147483647}
!1 = !{!"branch_weights", i32 64, i32 4}