mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-22 18:54:02 +01:00
88ae466cc3
Summary: Make InductiveRangeCheckElimination a FunctionPass. Reviewers: reames, mkazantsev Subscribers: hiraditya, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D73592
101 lines
2.9 KiB
LLVM
101 lines
2.9 KiB
LLVM
; RUN: opt -irce-print-changed-loops -verify-loop-info -irce -S < %s 2>&1 | FileCheck %s
|
|
; RUN: opt -irce-print-changed-loops -verify-loop-info -passes='require<branch-prob>,irce' -S < %s 2>&1 | FileCheck %s
|
|
|
|
; CHECK-NOT: constrained Loop at depth
|
|
|
|
; Demonstrates that we don't currently handle the general expression
|
|
; `A * I + B'.
|
|
|
|
define void @general_affine_expressions(i32 *%arr, i32 *%a_len_ptr, i32 %n,
|
|
i32 %scale, i32 %offset) {
|
|
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:
|
|
%idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
|
|
%idx.next = add i32 %idx, 1
|
|
%idx.mul = mul i32 %idx, %scale
|
|
%array.idx = add i32 %idx.mul, %offset
|
|
%abc.high = icmp slt i32 %array.idx, %len
|
|
%abc.low = icmp sge i32 %array.idx, 0
|
|
%abc = and i1 %abc.low, %abc.high
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
|
|
|
|
in.bounds:
|
|
%addr = getelementptr i32, i32* %arr, i32 %array.idx
|
|
store i32 0, i32* %addr
|
|
%next = icmp slt i32 %idx.next, %n
|
|
br i1 %next, label %loop, label %exit
|
|
|
|
out.of.bounds:
|
|
ret void
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
; Check that we do the right thing for a loop that could not be
|
|
; simplified due to an indirectbr.
|
|
|
|
define void @multiple_latches(i32 *%arr, i32 *%a_len_ptr, i32 %n) {
|
|
entry:
|
|
%len = load i32, i32* %a_len_ptr, !range !0
|
|
%n.add.1 = add i32 %n, 1
|
|
%first.itr.check = icmp sgt i32 %n, 0
|
|
br i1 %first.itr.check, label %loop, label %exit
|
|
|
|
loop:
|
|
%idx = phi i32 [ 0, %entry ], [ %idx.next, %in.bounds ], [ %idx.next, %continue ]
|
|
%idx.next = add i32 %idx, 1
|
|
%idx.next2 = add i32 %idx, 2
|
|
%abc = icmp slt i32 %idx, %len
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
|
|
|
|
in.bounds:
|
|
%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 %continue
|
|
|
|
continue:
|
|
%next2 = icmp slt i32 %idx.next, %n.add.1
|
|
%dest = select i1 %next2, i8* blockaddress(@multiple_latches, %loop), i8* blockaddress(@multiple_latches, %exit)
|
|
indirectbr i8* %dest, [ label %loop, label %exit]
|
|
|
|
out.of.bounds:
|
|
ret void
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define void @already_cloned(i32 *%arr, i32 *%a_len_ptr, i32 %n) {
|
|
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:
|
|
%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:
|
|
%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, !irce.loop.clone !{}
|
|
|
|
out.of.bounds:
|
|
ret void
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
!0 = !{i32 0, i32 2147483647}
|
|
!1 = !{!"branch_weights", i32 64, i32 4}
|